Java web application example source code jobs

...idea into a clean, well-designed Android application that supports real-time messaging. The core flow is simple: users create an account, log in, and exchange messages instantly. Smooth 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 ...

...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 components if that speeds us up). • A revised HUD, pop-ups, progress ...

...both stylish and intuitive. Core objectives • Build a native Android application focused on product browsing, secure checkout, and order tracking. • Craft an 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...

I need to crack a code for a website It’s a f 4 digit user code

...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 release-ready APK/AAB • Brief setup & build documentation I’m ready to start as soon as we agree on milestones and timelines; please include e...

web edits for 0260 ventures website

Summary We are seeking a Senior Backend Engineer to act as an independent Technical Advisor. Our founder is non-technical and requires an objective audit of the newly developed headless backend to verify code quality, architectural soundness, and milestone completion before releasing development payments. Note: You do not need a background in data science, Bayesian statistics, or R. Your focus will be entirely on the Node.js application layer, database schema, and the systemic integration/wiring. Key Responsibilities:     Code Review: Audit the Node.js/Express backend for adherence to modern engineering best practices, scalability, and maintainability.     Database Review: Evaluate the Prisma ORM schema and Postgres database de...

I need an application that reads a multipage PDF, pulls out all the text, and then pours that content into a fresh one-page PDF that follows a custom layout I already designed. The flow is simple: open PDF → extract every text element in reading order → map each string to its assigned field or zone in my supplied template → generate a brand-new 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 ...

Redesign the website from shopify to wordpress with onpage SEO

My site is currently full of errors and the front-end visuals are all over the place. I need someone who can track down the faulty logic that’s breaking pages, and then smooth out the look so everything feels consistent and professional again. The website had a particular design and layout, and all of that should still be in there. You’ll need to go into the existing codebase, figure out what the issue and fix them so the site loads cleanly. Once the back-end is stable, I’d like the layout set to my original design so the interface looks polished across desktop, tablet and mobile and the visual layer renders consistently in the latest Chrome, Firefox and Safari. This should not be very time consuming or complicated, because the coding is already done and the design sh...

I need a clean, well-structured application form designed in Microsoft Word. The document must be easy for me to edit later, yet locked enough that end-users can only type in the intended fields without disturbing the layout. Please build it with the following dedicated sections: • Personal details • Education background • Work experience Use Word’s form-field tools (text fields, drop-downs, check boxes where appropriate) so the final file behaves like a true fillable form, not just a styled template. Consistent fonts, clear spacing, and logical tab order are essential. When you respond, include a brief but detailed proposal outlining how you will set up the fields, protect the document, and hand over the editable template. A couple of sample pages ...

I’m exciting personal effective online and want a talented web-content author who could really construct clear, concise, as well as persuasive replicate the said motivates tourists and get in connect. Its classification contains three center pages—homepage, about one another, as well as services—and so each phrase should flow even while to be improved regarding reading but instead important seo. On a webpage its copy’s primary function is really to inspire touch but rather queries, sure solid calls-to-action but also benefit-focused sms were also crucial. Shown when everyone article must also personalize this same builds brand put any faith, whereas the assistance chapter should summary products available in such a path and it needs to convert sense of wond...

Hey, we are a German B2B online printer and are delevoping a basic design tool for our B2B customers. We want to add templates for them to manipulate. This job is to create six different QR Code Stickers (round, rectangle, mixed). ATTENTION: Designs incl the QR Codes need to be made with our tool!!! ATTENTION: This is also to test the tool with which you need to make the designs. You need to save them on the site for them to count. Also the Tool is in German!! STYLE: They need to be basic! Only few elements. Customers will use these templates you made in order to manipulate them to serve THEIR purposes, hence only realtively simple things will be needed/possible. You can use logo-replacer-image of your choice, and Icons you find in the Tool, and also external Icons (in this...

Recover Lost C++ Source Code Must Be an Expert in Multiple Programming Languages

...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 operations, basic moderation, spam filter or CAPTCHA) • Simple admin area for creating and editing posts • Clear read-me with setup steps and deployment instruc...

Hey, we are a German B2B online printer and are delevoping a basic design tool for our B2B customers. We want to add templates for them to manipulate. This job is to create nine different QR Code Stickers (round, rectangle, mixed). ATTENTION: This is also to test the tool with which you need to make the designs. You need to save them on the site for them to count. Also the Tool is in German!! STYLE: They need to be basic! Only few elements. Customers will use these templates you made in order to manipulate them to serve THEIR purposes, hence only realtively simple things will be needed/possible. You can use logo-replacer-image of your choice, and Icons you find in the Tool, and also external Icons (in this case copyright/license cannot be an issue. Please state what you'...

Project Overview Ro...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 maintainable code. Integration of third-party SDKs (Payment gateways, Google Maps, Analytics). Successful submission and management of apps on Google Play St...

...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 in-app map with driver-passenger matching • Fare calculation and in-app payment processing • A lightweight admin or BaaS integration to store trips, users, and transaction data You are welcome to suggest extras—scheduled rides, promo code logic, driver ratings—so long as the cab-booking flow remains the star of the ...

Project Overview Ro...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 maintainable code. Integration of third-party SDKs (Payment gateways, Google Maps, Analytics). Successful submission and management of apps on Google Play St...

We are looking to design and develop a web and mobile application that allows users to: - Discover and connect with doctors. - Book appointments and attend consultations through integrated video calls (e.g., Zoom). - Manage medical interactions securely and efficiently. Key features include: 1. Onboarding/Welcome screen. 2. User Registration/Login. 3. Home Dashboard. 4. Doctor Search/Listing and Profile View. 5. Appointment Booking and Confirmation system. 6. Video Consultation integration (Zoom or similar). 7. User Profile management and Appointment History tracking. 8. Notifications system for reminders and updates. 9. Support/Help section for user assistance. Additionally, the app will feature a self-awareness section where users can access information in aud...

I have a mature desktop application—a multi-round business simulation currently distributed to business-school cohorts—written entirely in LiveCode. The next cohort needs to access the game straight from the browser, so I need the whole package recoded to HTML5/JavaScript (or a comparable stack) without losing a pixel or a feature. Scope and key points • All screens, decision panels, charts, and reports must look and behave exactly as they do now; I want to keep the original interface unchanged. • Core game logic, scoring, data persistence, and the timing of each simulation round must mirror the LiveCode build so that instructors can keep using their existing teaching material. • The finished build has to run smoothly in the latest version of Chrome...

Siemens data scrape and watermark

Hello, Project manager says: REQUIRED - experience of AI with trading charts, signals, orders to digital wallet and knowledge of crypto. Main requirment - trading module not hitting Moving Average crosses and needs fixed or replaced, so please only apply if knowledge on syncronising MA sign...wallet. -Bot been running for about a year and agents been knocked offline. -Bot uses chart info from online dex sources via data scraping to assist coin selection process -Bot also uses AI via OpenAI to anaylse trade opportunities. -telegram function to display trade info and AI output. -hosted on 5 linux servers for different functions and 1 windows server that scrapes browser (via crons) for source data. -trades execute to digital wallet. -googlesheets function to display all trading inf...

VAPT of Android Application & Web Architecture

...points seem to come from heavy-handed JavaScript and bulky style sheets, so your main task is to refactor, defer, compress, or otherwise tame the existing JS & CSS without breaking the site’s functionality or design consistency. I’m particularly concerned with the homepage, as that’s where most visitors land and where I see the sharpest drop-off. You’re free to use any proven optimisation techniques—code splitting, async loading, tree-shaking, critical-CSS extraction, or smarter bundling in Webpack/Vite—so long as the end result is measurable. I’ll consider the job complete once the homepage scores noticeably better on PageSpeed, with LCP under 2.5 s and Total Blocking Time below 150 ms on standard mobile tests. Please tell me how y...

About the project I'm building a stock analysis application that automates a rigorous 12-point investment scoring framework (moat quality, gross margin, ROE, FCF, management integrity, valuation ratios, etc.) across ASX and US equities. The app includes a stock screener, portfolio tracker, watchlist with alerts, and an AI-powered analysis layer using the Anthropic Claude API. Tech stack - Backend: Python (FastAPI), PostgreSQL, Redis - Frontend: React (web) + React Native / Expo (iOS & Android) - Data: Refinitiv or Morningstar API integration - AI: Anthropic Claude API - Hosting: Railway / Vercel What you'll build (v1 scope) - REST API backend with authentication, stock data ingestion, and ratio calculation engine - Stock screener with 12-point scoring logic an...

...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 holistic growth. Think clarity over complexity, with a mark that sits comfortably on web, print, and small mobile i...

We have a simple product. Enhancing a certain tool. This is a method to generate revenue for another project. Under NDA. Starting immediately. A % of profit. We do Sales and Marketing.

I need a straightforward MVP that lets students log in, type a question, and instantly see answers drawn from a Fireba...types a question, the app checks Firebase for a matching entry, and returns the stored answer. • If no match exists, the question is written to a “unanswered” node/collection and the user sees a polite “We’ll get back to you” message. • Lightweight admin panel (mobile or web) where an authorised user can: – List unanswered questions – Add or edit an answer, which immediately makes it available to the app Scope is intentionally minimal; I just want a clean, functional proof of concept with commented code so we can learn from it. Please share any similar chat, FAQ, or Firebase projects you&rsq...

We typically use Google Forms for our applications, but I’d like something even clearer and more user-friendly this time. I’m looking for a freelancer to create a polished application form using Jotform (or a similar platform). It needs to allow applicants to upload PDF documents—like letters—without requiring a login. The form should be straightforward, clean, and easy for applicants to complete. If you have experience building forms like this, I’d love to see examples.

I need an e-commerce site built—fast—that turns our custom textiles, outdoor wall panels and bespoke furniture into an immersive buying experience. The core of the brief is visual storytelling, so I’m only considering designers who already work comfortably with Midjourney, DALL-E, AI Photo Studios or similar tools and can weave those assets straight into the layout. Here’s what success looks like for me: • A clean, responsive storefront (Shopify, WooCommerce or another modern framework you recommend) where customers can browse, customise and purchase our pieces without friction. • Eye-catching hero shots, ambience scenes and detail close-ups generated or enhanced through AI so every page feels curated, not stock. • An interactive product visual...

I need an experienced professional to review our existing plans for an interior mezzanine build to ensure compliance with the IBC Code, focusing on structural integrity. Key Areas for Review: - Footings - Walls - Mezzanine structure Ideal skills and experience: - Strong knowledge of IBC Code - Experience with structural integrity assessments - Background in architectural or civil engineering

...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 Google Play. • A live demonstration on...

...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 comments • APK ready for internal testing • README covering build steps, stack, and any third-party services The project is ready to move as soon as I find...

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...

I have an Excel-based application whose formulas are already working as intended; the only thing holding it back is the way it looks and flows on-screen and on paper. The job is entirely about layout and design. Here is what I need: • Resize columns and rows so every input, calculation, and result is immediately clear without excessive scrolling or hidden text. • Reorganise the existing data sections into a more intuitive order (inputs first, live results next, references last), while keeping every formula exactly where it belongs. • Add polished headers and footers ready for printing—space for a logo, file name, date, and page numbers will be enough. Please return the updated workbook with no broken references or altered calculations. A short note expla...

I need a native-quality Android application that mirrors the core experience of my existing video-streaming website while adding mobile-first polish. The app must let viewers sign up, log in, and manage their own profiles, and it also has to give approved creators the ability to upload and share videos directly from the phone. Access to the catalog will be subscription-based, so the flow for choosing a plan, paying, and renewing has to feel seamless. We are onboarding a new Indian payment gateway (full REST API documentation is ready on my side) and I want that integration handled end-to-end—plan creation, recurring charges, webhook handling, and graceful failure states included. I am aiming for the standard streaming comforts: smooth adaptive playback, background audio,...

I'm looking for an experienced developer to work with the following technologies Python, TypeScript, Docker, GitHub and AWS. Key functionalities include: - User authentication - Data storage - API integration Ideal skills and experience: - Proficiency in TypeScript - Strong knowledge of Docker, GitHub, and AWS - Experience in implementing user authentication and data storage solutions - Familiarity with API integration Please provide examples of similar work done.

I want to create a brand-new programming language, purpose-built for full-stack web development. Think of the expressive ease of Python blended with the modern, modular feel of Kotlin—yet tailored from the ground up for today’s browser and server demands. Here is what I need from you: • A clear language specification that covers syntax, type system, standard library scope, and concurrency model. • A working reference implementation (compiler or interpreter) able to run real code on both client and server. If you choose to compile to JavaScript for the browser and target, say, a lightweight VM or Node.js on the back end, that works for me as long as the developer experience stays seamless. • Core tooling: lexer/parser, REPL, package manager bas...

Need java developer to give couple of unique and really good hackathon project ideas.. also provide documentation and walkthrough of implementation

Dating Application like tinder, truly madly

4D Developer – Mac to Windows Migration Job Summary We are seeking an experienced 4D Developer (Contractor) to migrate an existing 4D application from macOS to Windows. The engagement is project-based, focused on ensuring functional parity, performance stability, and cross-platform compatibility of the solution on Windows. Scope of Work / Responsibilities • Review and assess the current 4D application on macOS • Define and execute a migration approach from Mac to Windows • Identify and remediate OS-specific issues, including: o File system paths and permissions o Platform-dependent code and plugins o Fonts, printing, UI, and system integrations • Update and refactor 4D methods, forms, components, and ORDA objects for Windows compatibility &bu...

I need a Python-based automation bot that reads Workday job application URLs from a .txt file and completes job applications end-to-end automatically using Playwright. IMPORTANT — Read Before Applying Every Workday job URL is configured differently by each employer. There is no fixed page structure, no fixed number of sections, no fixed field order. The bot must dynamically detect and handle whatever appears on the page at runtime. Do not apply if your solution relies on hardcoded selectors, fixed section orders, or assumes any specific page structure. The bot must work on any Workday job URL without code changes. Authentication — Three Scenarios The bot must detect which auth scenario applies and handle it automatically: Auth required first, then form fill For...

...• You need to find a list of openings (mostly remote AI/ML Engineer roles) and you note the company name, job title, date in a Google Sheet. (At least 50-100 applications daily) • You log in with the email I provide, complete every required field exactly as shown, attach the correct documents, and hit submit. • We provide resume generation tool and you need to generate every resumes for each application. (Tailored bid) • Take screenshot before hitting submit and report to me at the end of the day. Speed matters, but accuracy matters more—misspelled names or skipped questions get applications rejected. Familiarity with common job boards (Indeed, LinkedIn, ZipRecruiter, company career portals) will make your day smoother, yet the task itself is straightfo...

...position so we can confirm everything instantly. Please follow current Android 13 location-permission rules and make sure tracking survives reboots, Doze, and other battery optimisations. I will share the API spec; you may use Retrofit, Volley, or any modern HTTP client you prefer, as long as JSON payloads stay lightweight. Deliverables • Complete Android Studio project (Kotlin or Java) with well-commented code • Signed release APK and Git repository push • Concise README covering build steps, permissions, and how to adjust update frequency Acceptance criteria • Coordinates reach my backend with <3 s delay during a live test • Background service stays active for 8 h without manual relaunch • Toggling tracking off stops all ...

...style Android application. The idea is “bagus dan mudah”—clean, intuitive, and quick to ship. Core requirements • Native Android build (Kotlin or Java). • Basic social features: user sign-up/login, profile page, post creation with text + image, like/comment. • Cloud-based back end (Firebase is fine) for authentication, real-time database, and image storage. • Lightweight, modern UI that keeps navigation down to two or three main screens. • Deliverables: working APK, full source code, brief setup/read-me so I can run it locally or hand it to another team later. Nice-to-have (let me know if you can include) • Push notifications for new likes or comments. • Simple privacy settings so users can ...

Project Title: Windows Desktop Application for Biometric Registration (Mantra/Morpho Device Integration) Project Description: We are looking for an experienced Windows Desktop Application Developer to develop a secure biometric registration system for candidate verification. The application will capture fingerprint biometrics using Mantra or Morpho fingerprint devices, collect basic candidate details, and capture a photograph from the webcam. The system must be secure, reliable, and built following industry standards. The software will be used for identity verification and biometric registration of candidates, ensuring accurate and secure data capture. Scope of Work: Develop a Windows Desktop Application Integrate Mantra or Morpho fingerprint scanner device...

...ability is a strong advantage so you can correctly place headlines, body text, captions, and labels without errors. If you do not read German, please mention this in your application and explain how you will handle it. What we provide: All content as ready Word/PDF documents (7 articles, 100-120 pages of finalized copy) Full CI Media Asset Package (logos, colors, fonts, imagery) Cover concept as reference (Dark Theme mockup already exists) Clear structure: chapters, author boxes, tables, info boxes, offer boxes – all defined What you deliver: Digital version (RGB, interactive hyperlinks, clickable table of contents) All source files (InDesign or Affinity Publisher strongly preferred) Cover + back cover + table of contents + all article pages Minimum 2 cover desig...

...strategy to final submission. As a UWC student, I have been exposed to an international curriculum and diverse academic environment, and I am now focusing on building a strong application for highly competitive design schools. My goal is to apply to top institutions such as Parsons School of Design, RISD, UAL, and other leading design universities in the USA and UK. Because I am applying as an international student, I need someone who is familiar with how overseas applicants are evaluated, including portfolio-based admissions and additional documentation requirements. What I’m looking for: - A clear, personalised application timeline from now until submission deadlines - Strategic help in building a balanced and realistic university list, including top-tier, mat...

I already have the full logic, table schemas, and every necessary AppSheet expression drafted; what I need now is someone comfortable inside AppSheet to stitch everything together into a working business-management solution for a housing society. Scope • Connect the provided Google Sheets data source and recreate the exact schema I will share. • Build the UX views, actions, and workflow rules so that members can: – Browse a member directory – Record and track payments, loans, transaction and funds logs – Generate monthly and annual statements as well as budget reports • Keep everything inside AppSheet’s free tier—no premium bots or paid add-ons. • Follow the formulas and naming conventions I give verbatim so what...