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    2,000 lua groovy java jobs found

    I am developing a Java-based billing system and my immediate need is rock-solid payment processing. Your task is twofold: first, build the core payment module in clean, well-structured Java; second, document the work in a clear, professional report. Scope of the build The application is centred on secure, reliable payment handling—think card transactions, error recovery, and accurate balance updates. While payment processing is the top priority, a design that leaves room for future add-ons such as invoice generation or basic customer records would be ideal. I will supply detailed specs, UI sketches, and any gateway credentials once we get started. Report requirements Alongside the code, I need a concise technical report that explains the overall architecture, key clas...

    $194 Average bid
    $194 Avg Bid
    45 bids

    ...Product catalog with search and category filters • Secure user registration, login, and profile management • Shopping cart and checkout flow that supports major payment gateways • Order history and basic push notifications for status updates • Simple admin interface or API hooks so I can add, edit, or remove products without rebuilding the app Clean, maintainable code written in Kotlin or Java is preferred, and the final build must be ready for submission to Google Play. If you have experience integrating payment APIs, optimizing for varied screen sizes, and following Google’s material design guidelines, you’ll be a great fit. Please share a brief outline of your approach, any relevant store links to past Android e-commerce apps you&rsquo...

    $18 / hr Average bid
    $18 / hr Avg Bid
    69 bids

    ...core goal is to deliver a clean, modern user experience that lets people create profiles, connect with others, post updates, and exchange real-time messages. I am happy to refine the exact feature set together, but the fundamentals of a typical social platform—account creation, feeds, messaging, push notifications, and basic moderation tools—should guide the architecture. You may work in Kotlin or Java in Android Studio; I lean toward Firebase for authentication, cloud storage, and push but I am open to equivalent solutions if you justify the choice. Please structure the project so that it scales easily and can be handed over to another developer without friction. Deliverables • Full Android Studio project with well-commented source code • Signed, inst...

    $396 Average bid
    $396 Avg Bid
    35 bids

    I’m putting together a simple, learning-oriented e-commerce web application in Java and would like clean, well-commented code that I can study and extend later. The core flow is straightforward: a visitor lands on the site as a Guest, registers or logs in to become a Customer, browses a product catalogue, adds items to a cart, and submits an order—no payment gateway needed. Role management must cover Admin, Customer, and Guest. From the Admin dashboard I need the ability to Add, Edit, and Delete products, view every order that comes through, and manage the user list. For data storage we’ll use MySQL; please include a schema script plus any sample seed data so the app is ready to run after import. I’m comfortable running the project with Maven or Gradle, so ...

    $25 Average bid
    $25 Avg Bid
    25 bids

    ...Seamless checkout is essential. I want payment processing that covers all major credit cards and the most common digital wallets—PayPal, Google Pay, Apple Pay, and similar options—so customers can pay without friction whether they’re on the phone or on the desktop site. While I’m open to the tech stack you’re most comfortable with, I expect clean, well-documented code (Android Studio with Kotlin/Java, a modern web framework such as React, Vue, Angular, or a solid PHP/Node solution for the back end are all fine by me) and a straightforward admin area for product, inventory, and user management. Deliverables • Android app (APK + full source) published or ready to publish on Google Play • Responsive website mirroring the app’s cata...

    $39 / hr Average bid
    $39 / hr Avg Bid
    47 bids

    ...Seamless checkout is essential. I want payment processing that covers all major credit cards and the most common digital wallets—PayPal, Google Pay, Apple Pay, and similar options—so customers can pay without friction whether they’re on the phone or on the desktop site. While I’m open to the tech stack you’re most comfortable with, I expect clean, well-documented code (Android Studio with Kotlin/Java, a modern web framework such as React, Vue, Angular, or a solid PHP/Node solution for the back end are all fine by me) and a straightforward admin area for product, inventory, and user management. Deliverables • Android app (APK + full source) published or ready to publish on Google Play • Responsive website mirroring the app’s cata...

    $39 / hr Average bid
    $39 / hr Avg Bid
    43 bids

    I want to bring Counter-Strike’s addictive case-opening experience to Roblox. The core of the project is a fully functional case opening simulator where players can unbox custom cases that I cu...project complete: • a polished Roblox place published to a test universe, • the case opening mechanic with animated roll-out and rarity colour flashes, • fully working Jackpot, Case Battles and Roulette modes tied to the shared inventory, • optional Plinko and Mines if time allows, • clean, well-commented Lua scripts so I can maintain or expand the game later. If you already have experience scripting economy systems, item inventories or casino-style minigames in Roblox Lua, this should feel familiar. I’m ready to start as soon as you ca...

    $71 / hr Average bid
    $71 / hr Avg Bid
    21 bids

    I need a reliable developer to turn my idea into a functional Android application. At this stage I only require a simple, well-structured MVP that can later scale as new features are defined. Key needs: • Build a clean codebase for Android (latest SDK, Kotlin or Java—whichever you prefer). • Implement a straightforward UI with basic navigation and placeholder screens; final visuals can wait until the next phase. • Set up fundamental app architecture (MVVM or similar), user input forms, and local data storage so I can see real interaction on a device. • Provide clear instructions for running the project in Android Studio and generating an APK. I have not locked the app’s exact purpose yet, so I’m looking for someone who can advise on best...

    $19714 Average bid
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    55 bids

    ...infrastructure-as-code and automation for data deployment using Terraform, Ansible, or similar tools. Shape Qualifications & Required Skills · Bachelor’s or Master’s in Computer Science, Engineering, or related field. · 5+ years in data engineering roles, with at least 2 years handling real-time or streaming pipelines. · Strong programming skills in Python/Java and SQL. · Experience with Apache Kafka, Apache Spark, or Apache Flink for real-time and batch processing. · Hands-on with Airflow, dbt, or other orchestration tools. · Familiarity with data modeling (OLAP/OLTP), schema evolution, and format handling (Parquet, Avro, O...

    $60414 Average bid
    $60414 Avg Bid
    1 bids

    ...Let the user pick “Likes”, “Views”, or “Followers”, enter the Instagram link, set a quantity, and confirm. • Fire the corresponding SMM-panel API request and write the order number to the user’s order history. • Refresh status periodically so the user sees whether an order is pending, in-progress, or completed. Deliverables • Full Android Studio project with clean, well-commented Kotlin or Java code. • Integrated AdMob + Facebook Audience Network ad units ready to swap with my live IDs. • SMM-panel API module with clear instructions where to paste my key and endpoint. • Signed release APK for quick testing plus a debug build. • Short README explaining build steps, coin-per-ad logic, and wh...

    $84 Average bid
    $84 Avg Bid
    20 bids

    ...files Categories (e.g., AI, Data Science, Web Development) Display all submitted projects / Feedback (Optional but useful) Trainer/Admin can: Review projects Give ratings or feedback Comments section Section Highlight top projects Display: Project Title Author Name Description Technologies (Choose any) Frontend: HTML, CSS, JavaScript (or React) Backend: Python / Node.js / Java Database: MySQL / MongoDB Optional: Firebase for quick setup Workflow User registers Selects a training course Completes learning materials Builds a small project Uploads the project Trainer reviews it Project gets displayed in showcase Sample Project Ideas for Users Quiz system using Python Simple chatbot Budget tracker To-do list app Data visualization dashboard Deliverables Working application

    $4 / hr Average bid
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    18 bids

    ...hands-on technical projects that will stretch my programming abilities and would like a seasoned developer to guide the process. The core of this engagement is simple: you design a stream of bite-sized yet progressively challenging coding tasks, I complete them, and you review my work with clear, actionable feedback. My immediate focus is programming, so languages such as Python, JavaScript, or Java are ideal starting points, though I’m open to others if you can show why they add value. Each task should highlight a distinct concept—data structures, algorithms, version control practices, test-driven development, or clean code techniques—so I can build a well-rounded skill set while producing tangible portfolio pieces. When you respond, please point me to past...

    $324 Average bid
    $324 Avg Bid
    15 bids

    ...new Android privacy changes. • An in-app call history log showing date, contact/number and recording length, with the ability to tap and play the file. Everything else—UI theme, storage location options, codec choice, etc.—is up to you as long as recordings remain accessible in standard .wav or .mp3 format. Deliverables & acceptance • Signed release APK plus full Android Studio / Kotlin or Java source. • Brief read-me explaining permissions requested and any special settings users must enable. • Successful test clips from each target brand proving both parties are audible. I’m happy to review alternative technical approaches—Accessibility API, VoIP capturing, native C++ libraries—whatever you believe will produce t...

    $843 Average bid
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    63 bids

    ...BUTTON FOR REPORT SHARING DIRECT TO CUSTOMER AND EMAIL SHARING TO CUSTOMER Data flow & security A shared customer database should power every module, yet access must remain permission based so users only see what they need. Login can be email/password for now, but the code should be ready for future single-sign-on. Deliverables 1. Production-ready Android APK + web base and full Kotlin/Java source 2. Simple back-end (Firebase or a light PHP/MySQL API—open to your suggestion) 3. Database schema and API documentation 4. Short hand-off session plus 30-day bug-fix window If you have built modular CRMs or field-service apps before, please point me to them when you reply so I can gauge fit quickly....

    $1803 Average bid
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    86 bids

    ...completely from scratch. I have no existing codebase, designs, or technical documents, so I will rely on your guidance to shape the project from concept to a working APK. Here is what I need: • An initial discovery call to refine the core idea, target users, and feature list. • Wireframes or rough screen sketches so we can agree on the user flow before coding begins. • Android app development (Java or Kotlin) focusing on clean architecture, responsive layouts, and smooth performance on current OS versions. • Basic productivity features such as task creation, editing, and simple reminders—enough to demonstrate real utility without overcomplicating the first release. • Simple local data storage; cloud sync can be discussed as a future phase...

    $25 / hr Average bid
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    76 bids

    I want a ready-to-play Java Minecraft modpack that recreates the money-making loop of the game “Mine Moguls.” The core gameplay should revolve around three pillars: players mine a variety of ores, sell those ores for currency, then spend that currency on progressively better gear and automated machinery. Gameplay & balance • Use the Create mod for all mechanical processing, drills, conveyers, crushers, and automated packing. • Handle the economy with Create : Numismatic so every ore automatically converts to coins that can be spent in in-game shops or vending machines for upgraded tools, belts, drills, and decorative add-ons. • Difficulty set to moderate: mobs and resource scarcity should challenge the player without feeling punishing. World fe...

    $41 Average bid
    $41 Avg Bid
    14 bids

    ...(BLOB) so it is viewable from the standard Attachments form. The file format remains PDF from start to finish. Deliverables • Fully deployable OAF page (PG & RN files) with embedded PDF viewer • Controller & AM code that interfaces with the Wacom device, captures the signature, merges it into the PDF, and commits the BLOB to the database • Any required personalization, XML import scripts, or Java libraries, clearly documented • Setup guide covering steps to compile and load, plus a quick test script to prove the attachment is stored and retrievable Acceptance criteria: the page must load in <3 s, capture the signature without error on the Wacom device, and store the final PDF such that it opens from the standard EBS attachments window. If...

    $102 Average bid
    $102 Avg Bid
    30 bids

    I’m creating an Android-only application and need a developer who is equally comfortable in native Android (Java/Kotlin) and Python. The main objective is to connect a set of existing Python scripts to a clean, responsive Android front-end so the logic runs directly on the device. Here’s the current state: • All Python functionality is already written and tested on desktop. • No Android code exists yet; you will design the UI and wire it to the Python layer. • The bridge can be Chaquopy, Kivy, BeeWare, or any approach you prefer, provided performance on recent Android versions stays smooth. Scope of work 1. Set up the project structure and integrate the Python modules so they compile into the APK. 2. Build a minimal Android interface...

    $25 / hr Average bid
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    67 bids

    Basic understanding of how data flows Ability to debug if something breaks Testing APIs via Node/React Java Backend Skills API development Validation Error handling Logging Code quality Frontend → Backend (Node.js) → Backend (Java) Frontend Built with React Displays users and tasks Middle Layer (API Gateway) Built with Node.js + Forwards requests to Java backend Core Backend Built with Spring Boot Handles business logic, validation, data The task will be to work on the existing code base.

    $119 Average bid
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    38 bids

    ...refreshing only the in-game HUD of our Java + React title and want every health and status bar redrawn as a horizontal, arcade-era pixel strip that feels as if it were lifted straight from a 1980s cabinet. The rest of the code base and gameplay loop stay exactly as they are; your work lives purely in the React UI layer and the sprite sheet you supply. Here is what I need you to do: • Design a cohesive pixel-art skin for the health and status bars, sized for 1080p but readable down to 720p. • Deliver the pixel sprites (PNG and source Aseprite/PSD) plus the accompanying React component that swaps the current SVG/CSS bar with the new artwork while preserving all existing props and data bindings. • Hand off any small helper functions or CSS tweaks necessary so th...

    $14 / hr Average bid
    $14 / hr Avg Bid
    17 bids

    ...sounds could be refreshed for the new engine, feel free to flag them; keeping those is optional but welcomed if it speeds up approval on consoles. Please deliver: 1. The finished FS25-ready ZIP. 2. A short change-log outlining files touched. 3. Screenshot or short clip proving the mod passes in-game testing. You’ll likely use GIANTS Editor 9+, Blender or Maya for model tweaks, and the usual LUA/XML toolkit, but your workflow is up to you as long as the end product is plug-and-play for FS25. Reach out with any quick questions before you dive in so we can keep the port smooth and fast....

    $59 Average bid
    $59 Avg Bid
    6 bids
    Need a Pro java dev
    4 days left
    Verified

    Pro java & springboot developer Comfortable with AI and LLMs etc

    $377 Average bid
    $377 Avg Bid
    49 bids

    ...an incoming-call screen. Once connected, both parties can mute audio, switch cameras, or end the session. The call must automatically adapt to changing network conditions and recover gracefully from brief drops. WebRTC is my preferred technology stack, but if you can justify another approach with equal or better quality and device support, I’m open to it. Please leverage native Android (Kotlin/Java) rather than a cross-platform wrapper; I want full access to platform APIs, proper permission handling, and Material-compliant UI components. For signaling, feel free to propose Firebase, , or your own lightweight server—clarity and reliability matter more than the name on the box. Deliverables • Full Android Studio project with clean, well-commented code &bu...

    $14 / hr Average bid
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    54 bids

    ...execution 1- I need help in fetching Put and Call open interest for Nifty for weekly expiry automatically in a time period of say 30 sec or 1 minute. 2- These open interest values will be stored in some table. Along with the value of Nifty spot for that time. 3- This Open interest should then be used to calculate Put Call Ratio, PCR. 4- We need to plan a strategy in some coding language like Python / java or anything which can be used to generate buy and sell signal as per my logic. 5- This strategy should be mapped to my tradetron account so that the signals can be sent to my broker account for actual trade. 6- On generation of Buy / Sell signal the code will identify strike price (based on delta) and send signal to sell / buy that instrument along with lot size. This can be d...

    $362 Average bid
    $362 Avg Bid
    30 bids

    Role Purpose Build, enhance, and scale production-grade web applications and platform modules that support enterprise AI wor...minimal rework • Applications are intuitive, responsive, and stable • Codebases remain understandable and extensible as the platform evolves • Engineering velocity increases without sacrificing quality Ideal Background & Skills • 3+ years of experience as a full-stack engineer • Strong proficiency in modern front-end frameworks (React, Angular, or similar) • Solid back-end experience (Node.js, Java, Python, or equivalent) • Experience building RESTful or event-driven APIs • Comfortable working with cloud-based architectures • Experience integrating complex systems or platforms • Ability to work independ...

    $24 / hr Average bid
    $24 / hr Avg Bid
    62 bids

    ...lag. -The bot must be capable of trading on any time frame, such as 1 Day, 1 Hour, or 1 Minute. -The bot must be capable of also applying to forex and futures. Ideal Skills and Experience: - Proven experience in developing trading bots, especially for stock markets. - In-depth knowledge of stock trading strategies and market dynamics. - Strong programming skills, preferably in Python, Pinescript, Java, or C++. - Familiarity with APIs of major stock exchanges and custodians such as Schwab for automated entries. - Experience in backtesting and optimizing trading strategies. - Experience with ICT and SMC concepts like Liquidity Sweeps, Market Structure Shifts, Fair Value Gaps, Order Blocks, etc. - Experience in breakout trading, as well as Volatility Contraction Pattern concepts. ...

    $3035 Average bid
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    171 bids

    ...server-side runtime checks (serverCheck), and client-side runtime checks (clientChecks). Provide instance guidance — Identify which script and non-script instances in the DataModel are relevant to evaluating the prompt. Document your approach — Write a markdown explanation covering your reference code, unit tests, blockers, and methodology. Required Skills & Experience Strong proficiency in LuaU / Lua and experience scripting within the Roblox ecosystem Solid understanding of Roblox's DataModel, including services such as Workspace, Players, ReplicatedStorage, ServerScriptService, StarterPlayer, StarterPack, and StarterGui Familiarity with Roblox's client-server architecture — understanding the distinction between Scripts, LocalScripts, and Modu...

    $1709 Average bid
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    20 bids

    ASTERA DRIVE is kicking off with a focused V1 milestone that will set the technical foundation for a larger, evolving Roblox experience. In this first slice I need everything that makes a racing prototype feel polished and fun right away, built in Roblox Studio with clean, documented Lua so we can expand later without re-writing core systems. Deliverables for this milestone • One fully-tuned “Voiture de course” (single racing car model) with smooth, responsive handling and believable physics • One simple “Circuit de course” map sized for short laps, including start/finish triggers, basic scenery and checkpoints • Lightweight in-game UI: car dashboard (speed, gear, health/fuel if relevant), track mini-map, and a live leaderboard that up...

    $194 Average bid
    $194 Avg Bid
    40 bids

    ...element. Stealth & safety Anti-ban protection is essential. Obfuscate critical hooks, randomise signatures, and include bypasses for the game’s integrity checks so the account can survive online play. If additional encryption layers or signature-spoofing techniques are needed, build them in. Development notes • Target the current live build of Pixel Worlds on Google Play • Coding stack can be Java, Kotlin, C++ with Android Studio or any proven hooking framework (e.g., Frida, AndHook, Substrate) • The final APK must install on both arm64 and armeabi-v7a devices without root Deliverables 1. Signed, install-ready mod-menu APK 2. Well-commented source code with build instructions 3. Short video or screenshots demonstrating the menu working on...

    $27 Average bid
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    24 bids

    Looking for an experienced Android Java developer to build a complete app for an AR glasses device. The device connects to an Android phone via USB-C. The app must: — Open a live USB UVC camera feed fullscreen on the glasses display — Apply real-time zoom from 1x to 10x with sharpness maintained — Apply real-time contrast enhancement — Apply real-time brightness adjustment — Apply edge detection outline mode — Apply colour filter modes — Read visible text aloud using OCR and text to speech — Simple on-screen menu to switch between features — Maintain minimum 30 FPS at all times SDKs provided: — — USB camera, zoom, image effects (Java API over C/C++ native libraries) — — glasses communication an...

    $1979 Average bid
    $1979 Avg Bid
    9 bids

    ...── I'm building a Roblox game that features a fully interactive instrument system. This includes: • A complete playable instrument mechanic (keys/notes triggering sounds) • Smooth, high-quality playing animations per instrument type • Marketing/display machines — interactive objects that showcase instruments in-world (e.g. rotating displays, info pop-ups, buy/interact prompts) • Clean, modular Lua scripting so the system can be expanded later • UI elements tied to the instrument interaction (e.g. note indicators, play prompts) This is a moderately complex system requiring solid knowledge of Roblox Studio, LocalScripts/RemoteEvents architecture, AnimationController, and Sound design integration. ────────────────────────────── IMPORTANT &ndash...

    $200 Average bid
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    18 bids

    ...MongoDB + internal pipeline Frontend: map-based live vehicle tracking Important: This is NOT a beginner task Core TCP, packet flow, and ACK issues are already handled Issue is related to: Real-time stream handling Packet timing / smoothing Frontend movement logic Reconnect behavior handling What I Need: An experienced developer who has worked on: GPS tracking systems TCP socket servers (Node.js or Java/Traccar-like systems) Real-time vehicle tracking Map movement smoothing (no jumps) Expected Fix: Continuous smooth vehicle movement (no jump / no freeze) Proper handling of delayed packets Stable live tracking even with reconnects Production-grade solution (scalable) Bonus if you have: Experience with Traccar or similar GPS platforms Handling 1000+ live GPS devices Note: Plea...

    $120 Average bid
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    26 bids

    ...integrations* * Collaborate with HR, payroll, and finance stakeholders * Lead integration design discussions and mentor junior team members ### *Required Skills:* * Strong experience in *SAP CPI / SAP Integration Suite* * Hands-on experience in *US Payroll integrations* * Experience integrating *SuccessFactors ECP, ADP, Workday Payroll, SAP HCM Payroll* * Strong knowledge of *message mapping, XSLT, Groovy scripting* * Understanding of *US payroll processes (taxation, benefits, compliance)* * Experience in *API integrations and middleware architecture* * Knowledge of *SAP PI/PO* (for migration is a plus) * Familiarity with *security protocols (OAuth, SSL, certificates)* ### *Qualifications:* * Bachelor’s degree in Engineering, IT, or related field * SAP CPI / Integration...

    $2130 Average bid
    $2130 Avg Bid
    9 bids

    ...performance, a minimal learning curve for the user, and an interface that feels modern on all current Android devices are all essential. Because the budget is tight, I want to keep the feature set focused: basic registration/login, one-to-one chat, push-style updates so new messages appear without manual refresh, and a small settings screen. I’m open to the stack you prefer—Kotlin with Firebase, Java with WebSockets, or another lightweight solution—so long as the result is stable and easy to maintain. Deliverables • Signed APK (ready for testing) • Full source code with clear comments • Simple but polished UI/UX assets • Brief setup documentation for future builds I value clear communication and quick turnarounds. When you reply,...

    $102 Average bid
    $102 Avg Bid
    9 bids

    I’m giving the in-game interface of my browser-based idle game a full visual makeover and want it to scream retro pixel-art. The underlying logic is finished; all I need now is an eye-catching reskin. You’ll work directly in the existing Java back end and React/HTML front end, refactoring only the visual layer—layouts, components, sprites, colours, fonts, animations—while keeping every hook, state and API call intact. The Sprites and the UI-Elements are already existing and was created by me. Here’s what I’m after: • A cohesive pixel-art look inspired by classic arcade screens—bold palettes, chunky fonts, sharp contrast. • Clean React components and CSS that make future tweaks painless (feel free to vibe-code small utility com...

    $79 Average bid
    $79 Avg Bid
    70 bids
    disen mobil
    3 days left

    ...interface that looks clean, modern, and unmistakably premium—smooth animations, thoughtful spacing, and consistent typography are essential. • Integrate fundamental e-commerce features: searchable catalog, product variations, shopping cart, wish-list, multiple payment gateways, and push notifications for promotions and shipping updates. Technical expectations • Develop in Kotlin (preferred) or Java, following current Android best practices. • Use a scalable architecture (MVVM or similar), with clear separation of concerns and easy-to-maintain code. • Connect to my existing RESTful API; handle authentication, pagination, and error states gracefully. • Ensure compatibility with Android 8.0 (Oreo) and above. Design direction I already...

    $794 Average bid
    $794 Avg Bid
    84 bids

    ...experienced Android developer to turn my concept into a polished, production-ready app built natively for the latest Android SDK. I’ll provide the overall functionality goals during kickoff, but the visual direction must come entirely from a custom design created from scratch—no templates or off-the-shelf themes. Your process should cover UX wireframes, high-fidelity UI mock-ups, and the full Kotlin/Java codebase, all aligned with current Material Design guidelines while still feeling unique. Smooth performance, clean architecture, and well-commented code are essential because I plan to scale and maintain the app long-term. Deliverables: • Interactive Figma (or similar) design files • Compilable Android Studio project with source code • Signed re...

    $9789 Average bid
    $9789 Avg Bid
    166 bids
    PDF Text Extractor & Compiler
    2 days left
    Verified

    ...single-page PDF ready for distribution. My design file shows exact font sizes, margins, headers, and footers, so the app must respect those specifications pixel-for-pixel. Dynamic text should auto-shrink only when a block overruns its allotted space; everything else should remain fixed. No images or tables need processing—pure text only. I’m open to your preferred stack (Python with PyPDF2/PDFPlumber, Java with PDFBox, or any robust alternative) as long as the final solution: • Runs on Windows 10+ without extra paid dependencies • Processes at least 200 pages in under two minutes on a standard laptop • Lets me update the template later without touching the core code (e.g., via an external JSON or simple GUI field map) • Outputs a perfectly...

    $621 Average bid
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    196 bids

    I’m looking for an experienced ethical hacker who can also roll up their sleeves a...user stories and specs that I provide, translating them into secure, efficient software. Day-to-day you’ll be analysing requirements, recommending upgrades, collaborating with the rest of the dev team, and documenting everything—from flowcharts and user guides to the exact remediation steps you take. Routine maintenance and performance tuning are part of the remit as well. A solid command of Java and Python is essential, and you should feel at home in relational databases like MySQL, Oracle or SQL Server. If you’re detail-oriented, think critically under tight deadlines, and enjoy owning both the break-in and the fix, let’s talk about the next penetration target and ...

    $635 Average bid
    $635 Avg Bid
    98 bids

    I’m ready to launch a clean, fast personal blog and need a developer who can take it from blank repo to live site. The stack can stay lightweight—HTML5, CSS3, and vanilla JavaScript on the front end, with PHP (or Java if you prefer) handling any server-side logic. We’ll work in VS Code so everything stays transparent and easy to review. Core requirement: a working comment section that lets readers leave, edit, and delete their own thoughts while protecting the site from spam. I’m open to adding extras such as social media hooks or a search bar later, but for this first milestone the focus is the blog itself and the comment workflow. Deliverables • Fully responsive blog template with home page, post page, and error page • Comment system (CRUD o...

    $14 / hr Average bid
    $14 / hr Avg Bid
    80 bids

    ...scalable apps). Backend Integration: Experience with Firebase (Auth, Firestore, Cloud Functions) and RESTful APIs. UI/UX Implementation: Ability to translate complex Figma/XD designs into pixel-perfect, responsive Flutter widgets. Local Storage: Experience with Hive or SQLite for offline data handling. Native Integration: Basic knowledge of Method Channels to communicate with native Android (Java/Kotlin) or iOS (Swift) code if needed. Preferred Qualifications Industry Experience: Prior work in Dating Apps (real-time chat, geolocation) or Healthcare/ERP systems (data visualization, secure records). Architecture: Clean Architecture or MVVM patterns. CI/CD: Experience with Codemagic, Bitrise, or GitHub Actions for automated deployments. Deliverables Clean, documented, and ma...

    $14 Average bid
    $14 Avg Bid
    14 bids

    I want to turn my cab-booking idea into a polished mobile product that runs smoothly on both iOS and Android. The core requirement is straightforward: riders must be able to book a cab from their phone, watch the driver approach in real time, and handle payment without ever leaving the app. Because the project targets both major platforms, I am open to native builds (Swift + Kotlin/Java) or a proven cross-platform stack such as Flutter or React Native—whichever delivers the best blend of performance and maintainability. Whichever route you recommend, I expect feature parity across devices. Key functions I need from day one include: • Secure user authentication • Real-time ride requests and status updates (push notifications) • Live location tracking on an ...

    $605 Average bid
    $605 Avg Bid
    75 bids
    New Project
    2 days left

    ...scalable apps). Backend Integration: Experience with Firebase (Auth, Firestore, Cloud Functions) and RESTful APIs. UI/UX Implementation: Ability to translate complex Figma/XD designs into pixel-perfect, responsive Flutter widgets. Local Storage: Experience with Hive or SQLite for offline data handling. Native Integration: Basic knowledge of Method Channels to communicate with native Android (Java/Kotlin) or iOS (Swift) code if needed. Preferred Qualifications Industry Experience: Prior work in Dating Apps (real-time chat, geolocation) or Healthcare/ERP systems (data visualization, secure records). Architecture: Clean Architecture or MVVM patterns. CI/CD: Experience with Codemagic, Bitrise, or GitHub Actions for automated deployments. Deliverables Clean, documented, and ma...

    $32 Average bid
    $32 Avg Bid
    17 bids

    I’m building a self-hosted, fully offline education portal that brings career development and personal well-being under one roof. The site will house technical courses—SQL, Excel, Python, Java, Power BI, AI, LLMs, and other trending skills—alongside sections dedicated to aptitude training, gym routines, yoga, and meditation. Visual direction • Overall look: relaxed and friendly so newcomers feel welcome, yet clean enough for seasoned professionals to navigate quickly. • Home page must spotlight Course categories first; everything else can flow beneath or be reached from secondary navigation. Brand identity Alongside the site, I need a logo that communicates professionalism and expertise while still echoing our vision of continuous learning and...

    $362 Average bid
    $362 Avg Bid
    78 bids

    I'm looking for an experienced coder to help develop my Roblox game. The focus will be on implementing and refining core game mechanics. Key Areas of Support Needed: - Character Abilities: Design and code unique abilities for players. - Level Design: Create engaging and balanced game levels. - Combat System: Develop a dynamic and fun combat system. Ideal Skills and Experience: - Proficient in Lua and Roblox Studio - Strong game design principles - Previous experience with Roblox game development - Patience and good communication skills Please share your past work and relevant experience.

    $105 Average bid
    $105 Avg Bid
    16 bids

    I'm looking for an experienced coder to help develop my Roblox game. The focus will be on implementing and refining core game mechanics. Key Areas of Support Needed: - Character Abilities: Design and code unique abilities for players. - Level Design: Create engaging and balanced game levels. - Combat System: Develop a dynamic and fun combat system. Ideal Skills and Experience: - Proficient in Lua and Roblox Studio - Strong game design principles - Previous experience with Roblox game development - Patience and good communication skills Please share your past work and relevant experience.

    $41 Average bid
    $41 Avg Bid
    18 bids

    ...app built from the ground up and, just as important, I want to understand every step that goes into creating it. Your role will be two-fold: first, deliver a fully functional APK (plus clean, well-commented source code); second, walk me through your architecture, toolchain, and deployment process so I can replicate or extend the project later. Core expectations • Native Android build (Kotlin or Java with Android Studio). • Standard social features—user registration/login, profile editing, posts with images/video, likes/comments, and real-time notifications. • Secure back-end (Firebase, Supabase, or a lightweight REST API with SQL) and cloud storage for media. • Clear documentation: project setup, key code sections, and build/submit steps for Goo...

    $569 Average bid
    $569 Avg Bid
    36 bids

    ...platform is Android only, so please focus on the latest Android SDK while keeping compatibility back to at least Android 8. I already have wireframes that outline a familiar social feed: users create profiles, follow one another, post photos or short videos, like, comment, and receive push notifications. Your role is to refine the UI to Material Design standards, build the front-end in Kotlin or Java, and connect everything to a scalable cloud back-end—Firebase is my first thought, but I’m open to an alternative you can justify. Robust authentication, real-time data sync, and basic content moderation hooks are essential. Performance, security, and clean, well-commented code will guide acceptance. Deliverables: • Android Studio project with full source and comme...

    $14 / hr Average bid
    $14 / hr Avg Bid
    30 bids

    I'm looking for an experienced mobile app developer to create a social networking app for Android. Key Requirements: - Design and develop an intuitive, user-friendly interface - Implement real-time messaging and notificat... Key Requirements: - Design and develop an intuitive, user-friendly interface - Implement real-time messaging and notification features - Build secure user authentication and profile management - Integrate multimedia sharing capabilities (photos, videos) - Ensure app performance and scalability Ideal Skills and Experience: - Proven experience in Android app development - Strong knowledge of Java/Kotlin and Android SDK - Experience with real-time data and backend integration - Familiarity with UX/UI design principles - Ability to conduct thorough testin...

    $462 Average bid
    $462 Avg Bid
    38 bids