Elliptic curve cryptography algorithm source code in java jobs

...full-featured wellness application for Android that mirrors the experience of HealthifyMe, but focused on my own brand and feature set. The core of the build revolves around live tracking linked to three pillars: calorie tracking, detailed exercise logging, and personalised diet plans. In addition to these coaching tools, I want users to feel connected, so the app must ship with social functionality—specifically the ability for friends to add one another, exchange messages in-app, and follow each other’s progress in real time. Because we are launching on Android only, the interface should follow modern Material Design guidelines, remain lightweight, and perform smoothly on mid-range devices. A secure backend (Firebase, Supabase, or a custom REST se...

...weekdays. Short, punchy video reels—no static posts—should break down strategies, risk management and psychology in a way that genuinely educates viewers. Expect to handle scripting, editing, dynamic captions, on-trend audio, thumbnail frames and scheduling inside Meta Business Suite, all while keeping the tone approachable but expert. For YouTube, I’m aiming for story-driven pieces that take followers inside my personal trading experiences: real trades, lessons from wins and losses, and the thinking that happens between entry and exit. Each upload needs clean cuts, clear charts on screen, subtle motion graphics, keyword-rich titles, descriptions and tags to help the algorithm surface the videos. Deliverables • Weekly content calendar aligning In...

Project Title Design and Implementation of a Central Core for 6AM Mart Source Code using the Strangler Fig Approach (Migration to Microservices Architecture) 6AM Mart System Overview The 6AM Mart source code is a complete multi-vendor marketplace and delivery platform that provides multiple services simultaneously. The system includes the following main modules: * Food * Grocery * Pharmacy * Parcel * Shop In addition to these modules, the system includes operational components such as: * Order Management * Payment Processing * User Management * Vendor Management * Delivery Management The system is accessed through: * Admin Panel * Vendor Panel * Customer Application * Delivery Application Current Platform Status * Backend: Laravel * Web: React * Mobil...

...Frequency Drive is running on existing code that now throws unexpected errors during operation. I need an experienced developer to dive into the current project, isolate the bugs, and deliver a clean, reliable version of the program that restores full functionality. You will have remote access to the controller and the full source package as soon as we agree on an NDA. Once inside, I expect you to: • trace and document the root cause of the faults, • correct the offending sections of code, and • verify the fix on-site or through simulated load tests so the drive performs to spec across all speed ranges. The job is complete when the code compiles without warnings, the VFD responds accurately to every command sequence, and I receive the ...

I’m creating an online store for cosmetic products and want the codebase to feel as professional as anything you would ship to production. The backend must be written in Java with Spring Boot, exposed through well-structured REST endpoints, and persist data in MySQL. On the client side I only need a clean, responsive interface built with plain HTML, CSS and vanilla JavaScript—no heavy frameworks—so that the focus stays on clear architecture rather than flashy UI libraries. Core features I expect: • Role-based authentication for Admin and Customer accounts, supporting registration, login and logout with secure password storage. • Admin dashboards to add, edit and retire products, plus view basic order information. • Customer-facing ...

I’m expanding several engineering teams for top-tier MNCs and rapidly scaling tech start-ups and need skilled people who can jump in right away. The first seats I must fill are: • Software Developers who are fluent in React, Node, and/or Java. If you can architect front-end components in React, build robust APIs with Node, or craft enterprise-grade services in Java, you’re already on my shortlist. • Data Analysts & Data Engineers able to turn raw data into clean, actionable insights. Solid SQL skills are essential, and if you have experience with Python, Spark, or comparable tooling, that will be an added advantage. • UI/UX Designers who can translate complex product ideas into polished, user-centric interfaces, ...

...specifically for large-screen Android tablets that will run in a Linux-based build and deployment environment. The end product has to feel seamless beside our existing web application, so rock-solid integration is everything. Here’s the core of what you’ll be doing: the app is brand new (nothing to refactor) and must ship with secure user authentication, real-time data synchronisation to our backend, and reliable push notifications. The server side is already live; you’ll consume our REST/JSON endpoints and make the tablet experience fully in step with the web version. Because this is a contract role I need someone who already has at least five years of hands-on APK work under Linux—comfortable with Android Studio, the Android SDK, Kotlin/Java...

... and grades/performance, all pulled from our current REST endpoints. Data caching, photo upload, and simple edit forms already exist in Java and must be replicated in Dart without losing validation rules. 3. School Contacts & Calendar – For this first sprint I only need the staff directory portion live. Search, role filtering, click-to-call, and email links should work out of the box. The calendar view may stay read-only for now; it simply has to render the same event feed we already expose in JSON. You have to use same Android source, API codes (Extract), and the original UI assets. Keep the file and folder structure Flutter-standard, comment the code clearly, and ensure it builds for both Android and iOS (latest stable channel)...

Project: Hybrid Multi-Source Energy Prototype (Micro Build – Ongoing) I’m developing a hybrid energy system designed to combine multiple environmental inputs, including: - Solar - Wind - Hydro (if applicable) - Thermal energy - Potential energy/force absorption (future integration) The system is built around a 48V DC bus with LiFePO4 storage and DC/AC outputs. Phase 1 & 2 designs (schematics + BOM) are already completed. I’m looking for someone to help refine and build a working prototype. --- Budget / Structure - Tight budget — open to a micro prototype (V1) approach - Start with a $100 milestone (design review + initial planning) - Continue with $100 per milestone, paid based on completed deliverables - Please include: - Your total ...

...the idea as well as code it. Here’s what I need from you: • Discovery & wireframing sessions to refine the core feature set • Clean, maintainable Kotlin or Java code that follows Android best practices • A modern UI built with Material Design components • Integration of essential services such as authentication, push notifications, analytics, and in-app purchases when relevant • End-to-end testing, including unit tests and UI tests, with clear test reports • Assistance with Play Store listing, signing, and rollout Acceptance criteria: 1. The app installs and runs smoothly on current Android versions (API 24+). 2. All agreed-upon features are fully implemented and documented. 3. Source code...

...another category will be decided once we refine the concept together. Key functionality is equally flexible. Depending on the agreed use-case, the build may include fundamentals such as messaging, user profiles, a news feed, or any other feature set that fits the solution. Code should be written in Kotlin or modern Java within Android Studio, follow current Material Design guidelines, and be structured for easy maintenance and future feature expansion. Deliverables • Fully-tested APK and complete source code • Brief technical documentation outlining architecture, key libraries, and build steps • One walkthrough session to hand over the project and address questions Acceptance criteria will be finalised once the scope i...

...users can play, chat, share photos, connect with friends, and still reach for built-in tools that make daily life easier. Here is what I already know I need: in-app messaging, seamless photo sharing, and a robust friend-connection system. Because we’re targeting Android only, you’re free to lean into Kotlin or Java and make the most of Google-first services—Firebase for real-time chat and push, Play Games Services for leaderboards or achievements, and any modern Android Jetpack libraries that speed development while keeping the codebase clean. I’ll handle concept art and copy; you’ll take charge of architecture, clean UI/UX, feature implementation, and release-ready optimisation. Reusable, well-documented code is important, as ...

... intuitive touch controls and a gradual difficulty curve that keeps adults engaged without feeling patronised are key design goals. I’ll be looking closely at detailed project proposals that outline: • Technical approach and chosen engine • High-level game loop and feature set (levels, hint system, possible IAP pack, leaderboards, etc.) • Milestones with estimated timelines for prototype, alpha, beta and store-ready release • Asset production plan (art style, animation method, audio sourcing) • Testing strategy for multiple screen sizes and OS versions • Post-launch support or update roadmap, if offered Acceptance criteria for final hand-off: Android APK + iOS IPA ready for store upload, complete and well-commented source ...

...Kuwait Mobile ID (PACI) authentication and digital signature services into our web and mobile applications (Magento 2 + APIs). The integration must follow the official PACI SDK and support secure identity verification, authentication, and digital signing workflows. Scope of Work The developer will implement full integration using PACI Mobile ID SDK, including: 1. Authentication Integration QR Code Authentication (Web login) URL Scheme Authentication (Mobile apps) Push Notification Authentication ➡️ User approves via Mobile ID App (PIN-based authorization) 2. Digital Signature Integration Implement document/data signing flow Generate hash → send to PACI → receive signed response Validate signature securely 3. Identity Verification Scan/verify Mobile ID QR Retrieve ...

...experience with Amazon SEO, keyword research, and listing optimization. Your work should be optimised for Amazon’s algorithm as well as real shoppers. That means keyword research (Helium 10, Jungle Scout, or your preferred tool), competitor gap analysis, and clear SEO-friendly structure without sacrificing readability. I also want the A+ modules to tell a cohesive brand story, visually explain fit and fabric benefits, and reduce size-related returns. Deliverables • One fully optimised parent listing template with variation structure • Individual child listings for each style/size/colour, complete with backend keywords • A+ Content design assets and copy, ready to upload in Seller Central • Brief hand-off guide summarising keyword strateg...

I maintain a Java-based backend that exposes a small REST interface for sensor and other device data. A few legacy issues are breaking current GET and POST calls and I also need several new endpoints added. Each confirmed bug you resolve is paid at ₹1,200, and the same rate applies if you prefer to log time hourly instead. Scope • Diagnose and fix existing errors in the REST layer, services, or related model classes. • Add clean, well-documented GET and POST endpoints so devices can reliably push data and consumers can pull it back. • Ensure responses follow our current JSON schema and return the correct HTTP status codes. • Provide concise unit or integration tests that demonstrate each fix or new endpoint working end-to-end. Acceptance criteria...

I maintain a Java-based backend that exposes a small REST interface for sensor and other device data. A few legacy issues are breaking current GET and POST calls and I also need several new endpoints added. Each confirmed bug you resolve is paid at ₹1,200, and the same rate applies if you prefer to log time hourly instead. Scope • Diagnose and fix existing errors in the REST layer, services, or related model classes. • Add clean, well-documented GET and POST endpoints so devices can reliably push data and consumers can pull it back. • Ensure responses follow our current JSON schema and return the correct HTTP status codes. • Provide concise unit or integration tests that demonstrate each fix or new endpoint working end-to-end. Acceptance criteria...

I have a small but time-sensitive task: I need the attached artwork rebuilt as a clean, fully-scalable vector and supplied as an EPS. Key details to match • Keep the smooth gradient inside the sun and in the top blue wave exactly as shown. • Make the lower blue wave a touch darker than the upper one, mirroring the reference. • Round off the bottom point of the sun so it feels softer—just a subtle curve, not a sharp tip. The graphic will be used in various digital contexts, so please organise your layers logically and make sure colours remain consistent when exported to web formats. Feel free to sample colours directly from the original image; I don’t have exact codes to provide. Deliverable • Final, print-ready EPS file ...

i want to make it Shopify compatible or any other platform

...coverage first, documenting test cases and edge scenarios that cannot yet be automated. • Automated suites written in Selenium for the web layer, Appium for iOS / Android builds, and JUnit for our Java-based desktop client. • Clear, human-readable reports and logs integrated into our existing CI pipeline (GitHub Actions). • A short hand-off session so my dev team can run and maintain the scripts without you. Acceptance criteria: 1. All critical user flows on every platform are covered by automated checks. 2. Failed test results surface in CI with actionable error messages. 3. Manual test documentation is delivered in a shared repo and linked to the corresponding stories. Code must be cleanly structured, commented, and pushe...

...smoothly on Android 10+. Kotlin is preferred, but Java is acceptable. I will provide the initial batch of instrumental tracks and timed-lyric files; please structure the project so that additional songs can be added later by dropping them into the correct folders or updating a small JSON manifest. Deliverables: 1. Play-store-ready APK and signed AAB 2. Clean, well-commented source code in a private Git repo 3. Brief README explaining how to add new songs, change colours, and rebuild the app 4. A short test video showing the score screen after a sample recording I’ll test on a Pixel 5 and a Samsung A32, so the layout must adapt to different resolutions. If you have previously worked with audio latency issues, please highlight that in you...

...entries, slippage control, retry logic, and cloud-based 24/7 operation. It should also include IV vs RV based trade filtering, non-repainting logic using only closed candles, real-time alerts via WhatsApp/email, and performance tracking such as win rate, drawdown, and equity curve. The system should support multi-mode operation (SAFE/NORMAL/AGGRESSIVE) based on market conditions. I am specifically looking for someone who has strong experience in algo trading, options strategies, and API-based automation systems. Full source code ownership and complete rights over the delivered system will be required. ...

I'm looking for a skilled developer to create a desktop income tax calculator. Requirements: - Compatibility: Desktop only - Features: - Tax savings tips - Detailed breakdown by category - Export to PDF Ideal Skills: - Proficiency in desktop application development - Experience with financial software tools - Strong UI/UX design skills for user-friendly interfaces - Expertise in at least one of the preferred programming languages: Python, Java, or C#

...productivity-focused Android app is solid on features, yet its install curve and star rating have stalled. I’m looking for someone who can blend smart App Store Optimization with selective influencer outreach to lift both metrics in a measurable way. Here’s what I need: • A data-driven ASO refresh—keyword research, rewritten short & long descriptions, and A/B-tested graphics—implemented through Google Play Console. • A plan for securing fresh, genuine user reviews that can realistically move the average rating upward (no black-hat tactics). • Identification and approach outlines for micro-influencers or niche YouTube channels whose audiences actually look for productivity tools. Acceptance criteria 1. Visible bump i...

...for a ready-to-deploy ERP package, complete with 100 % editable source code, that I can roll out across multiple manufacturing facilities. The platform must be purpose-built for a manufacturing environment; streamlining day-to-day operations is my primary objective. Core scope The system has to cover the usual breadth of a full ERP, but the first three modules below are non-negotiable because they drive our shop-floor efficiency: • Inventory Management • Supply Chain Management • Production Planning If your codebase already includes additional standard modules—finance, HR, CRM, maintenance, or quality—let me know; the broader the coverage, the better. Technical expectations and deliverables 1. Complete source code with...

I have high-resolution reference images for five modern logos and need each one redrawn as perfect, scale-independent vectors in Adobe Illustrator. Every curve, color, and gradient in the source pictures must be matched precisely—no jagged edges, color shifts, or loose anchor points. Place all five finished vectors on a single artboard so I can export them together, and also save each logo to its own clean .AI file. Alongside the .AI versions, please include transparent-background PNGs at 300 dpi. Deliverables • One master Illustrator file containing the five logos • Five individual .AI files (one per logo) • Five corresponding 300 dpi PNGs with transparency I will provide the reference images immediately after award; just retur...

need to record audio, save the file after 2 minutes, create new file, save the file after 2 minutes and so on. must run only in background. need to use Android Studio and Java. Not Kotlin

...nudging the algorithm in our favor with quick, authentic interactions throughout the week. Because the content is almost exclusively event announcements, I’ll provide the key details—dates, images, and any special offers—well in advance. You turn that into a clean posting calendar, program it into Business Suite (or your preferred scheduler), and make sure everything fires at the right moment. To keep us aligned, I’ll expect three concrete deliverables: 1. Creating events on facebook and running ads to both facebook & Instagram 2. Daily engagement on both platforms, with comments and messages answered within 24 hours. 3. Communicating with vendors through social media and SMS If you love the rhythm of social media, know Facebook an...