Typescriptcông việc

...quản lý code. Đảm bảo đầu ra của AI luôn là JSON chuẩn xác để App có thể render giao diện tương tác. ​B. Backend Architecture & Data (30% - The Foundation) ​Supabase / PostgreSQL Master: Thiết kế schema CSDL tối ưu cho cả dữ liệu quan hệ (Relational) và dữ liệu vector (Vector Search). Lưu trữ lịch sử chat và hành vi học tập để cá nhân hóa trải nghiệm. ​High Performance API: Xây dựng API (Python/TypeScript) hỗ trợ Streaming Response (trả lời từng từ như ChatGPT) để tối ưu trải nghiệm người dùng (UX). ​Data Privacy: Thiết kế cơ chế "Redaction" để lọc bỏ thông tin nhạy cảm (PII) của người dùng trước khi gửi request sang các LLM provider. ​C. Evaluation &am...

viết bằng 1 trong các ngôn ngữ C, C#, C++, Go, Java 11, Java 8, JavaScript, PHP, Python, Ruby, TypeScript or Visual Basic để giải 3 bài tập thuật toán trong gần 2 tiếng để nạp bài

Run smoothly on localhost is enough, using typescript redux, no back end needed. All data get from fakeapi

+ Xây dựng các loại phiếu đánh giá theo mẫu theo từng loại đối tượng và cơ cấu tổ chức. + Tạo lập ràn buộc, công thức để đánh giá, xếp loại cán bộ, công chức theo Nghị định 90/2020 + Xậy dựng quy trình xét duyệt phiếu đánh giá và chuyển lên cấp trên. + Xuất Báo cáo tổng hợp dữ liệu tổng hợp theo mẫu. *** Ngôn ngữ: Typescript, Javascript FE: React JS BE: Node.js,

Cần tuyển freelancer hỗ trợ làm website cùng team. Website dùng React / TypeScript / Node.js. Codebase trên GitHub. Lương trả theo giờ. Có thể làm frontend hoặc backend.

Bên mình có dự án từ nước ngoài cần làm trading platform. Hiện đã có 1 bạn full time Front end nhưng cần các bạn freelancer hỗ trợ. Yêu cầu là lập trình viên Front End có 2-3 năm kinh nghiệm, biết Reactjs và Typescript. Thời gian có thể cam kết là 20giờ/tuần. Trao đổi qua online là chính, chỉ gặp 1 hoặc 2 lần để thảo luận thôi. Cảm ơn mọi người đã đọc tin nha. (Removed by Freelancer.com Admin)

...trends * Calories and adherence tracking * Progress charts and heatmaps --- 6. COMMUNITY FEATURES (MVP LEVEL) * Fitness challenges * Leaderboards * Achievement tracking * Community groups (basic implementation) --- 7. ADMIN PANEL * User analytics dashboard * Workout and diet content management * Challenge management --- TECH STACK (PREFERRED) Frontend: * (App Router) * React + TypeScript * Tailwind CSS * Recharts or similar chart library Backend: * Node.js (API routes or Express) * MongoDB (Mongoose) AI / ML: * MediaPipe Pose or equivalent browser-based pose estimation * Lightweight rule-based + optional ML scoring Deployment: * Vercel or similar serverless hosting --- NON-FUNCTIONAL REQUIREMENTS * Responsive design (mobile-first) * Fast loading (<3s initia...

I’m expanding our mobile team and want an experienced developer who is equally comfortable in Flutter (Dart) and React Native (JavaScript/TypeScript). Our live products run on both iOS and Android, so every feature you tackle must compile cleanly and perform smoothly on each platform from the first build. THIS JOB IS IN THE US TIME ZONE ONLY + NEED WEEKEND AVAILABILITY The initial assignment is urgent—bug squashes and a small new module need to ship ASAP—yet the larger goal is an ongoing collaboration. Once we clear this immediate milestone together, you’ll roll straight into our regular sprint cycle, building new screens, integrating REST/GraphQL APIs, writing unit tests, and taking part in code reviews on GitHub. To get a quick read on your fit, please l...

...work on-site, in the office, or in the field without friction. Autonomy is non-negotiable: the system should make decisions on its own—select suppliers, adjust schedules, reallocate crews—while still logging its rationale for audit and compliance. Human review will be optional, not required, so the underlying models need to be explainable and defensible. Typical toolkit ideas include Python or TypeScript micro-services, TensorFlow / PyTorch for the learning layer, and Flutter, React Native, or Electron for the clients, but I am open to alternative stacks so long as you justify them against scalability, maintainability, and speed to market. Deliverables I expect: 1. End-to-end architecture diagram and tech stack proposal 2. MVP with trained models, responsive cross-...

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...Maintain callback processing latency below 2 seconds end-to-end • Enable deployment rollback within 2 minutes with service continuity • Provide automated retry handling and dead-letter workflows for failed messaging jobs • Deliver queue, database, and API observability sufficient for rapid fault diagnosis Framework of the project Frontend • Framework: React.js • Language: TypeScript Backend • Runtime: Node.js • Language: TypeScript • Framework: • API Style: REST • ORM layer: Drizzle ORM • Job Queue: BullMQ + Redis • In-memory datastore: DragonflyDB (Redis-compatible) • Authentication: BetterAuth • Package Manager: pnpm Database: PostgreSQL (DigitalOcean managed database) Hosting Platform: Digital Oc...

The core of my learning platform is already live: a React front end talking to a Node-Express API with PostgreSQL, secured by JWT, and enriched wi...and fine-tune PostgreSQL queries to remove bottlenecks. Acceptance criteria • At least a 20 % decrease in average generation latency under load testing. • Observable accuracy lift demonstrated through an evaluation set I provide. • All new endpoints fully covered by unit and integration tests and merged via pull request to the existing GitHub repo with CI passing. You will be working in a TypeScript, React 18, Node 20, PostgreSQL 15 stack, and I can spin up a staging database plus OpenAI/Groq keys for isolated testing. If you have experience fine-tuning or function-calling these models, even better—let’s...

...site the system should decide which agent to invoke, craft the prompt, send it to OpenAI, and reply via email with a clear, well-formatted answer. No extra log-in, no chat widget—just a smooth email conversation that looks like it came from us. • Keep everything integrated with the current codebase: Next JS pages and API routes, Node services, and MySQL models. I’d like clean, well-documented TypeScript (where possible), reusable functions for prompt handling, and environment-based configuration for keys and model selection. • Provide a short hand-over document and screen-share walkthrough so my in-house dev can maintain and extend the agents later. If you’ve built agent workflows on Next JS before and are comfortable wiring up OpenAI, Nodemailer (o...

I am looking for an experienced automation tester who has expertise in TypeScript and Playwright. T Skills and Experience Required: The Project involves end to end writing of the playwright automation framework. If not continuing with the current framework. - Proficiency in TypeScript and Playwright - Strong knowledge of automation testing principles and practices - Experience in conducting end-to-end testing for web applications - Ability to create and execute test scripts - Familiarity with test automation frameworks - Attention to detail and ability to identify and report bugs and issues - Excellent problem-solving and troubleshooting skills If you have the required skills and experience, please submit your proposal along with relevant samples of your previous work.

...Data: Implement PostgreSQL with the TimescaleDB extension to manage millions of historical performance metrics via Hypertables. Job Queuing: Manage background scanning tasks using Redis and BullMQ to ensure horizontal scalability. API Design: Develop RESTful endpoints for on-demand scans, time-series data retrieval, and automated white-label PDF generation. Technical Requirements: Node.js / TypeScript Mastery (NestJS or Express preferred). Expertise in Puppeteer/Playwright and bypassing WAFs (Stealth plugins/Residential Proxies). Strong experience with PostgreSQL and time-series extensions (TimescaleDB/InfluxDB). Experience with for a performant frontend dashboard. Deliverable: A fully functioning MVP capable of handling 5,000+ daily scans across 20+ global nodes. Milestone Pa...

I want a full React.js website built from the ground up. The exact purpose—whether e-commerce, informational, or portfolio—is still open, so I need a developer who is comfortable shaping the architecture to fit whichever direction we finalise. Key points I already know: • The site must be built with modern React (functional components, hooks, and ideally TypeScript). • Code should be clean, well-documented, and easy for me to extend later. • Responsive design is essential; it has to look sharp on desktop, tablet, and mobile. • Page load speed and SEO-friendly practices should be baked in from day one. • I’ll rely on your guidance for UI/UX—either implementing a design system I provide or helping me craft one from scratch....

I’m expanding our mobile team and want an experienced developer who is equally comfortable in Flutter (Dart) and React Native (JavaScript/TypeScript). Our live products run on both iOS and Android, so every feature you tackle must compile cleanly and perform smoothly on each platform from the first build. THIS JOB IS IN THE US TIME ZONE ONLY + NEED WEEKEND AVAILABILITY The initial assignment is urgent—bug squashes and a small new module need to ship ASAP—yet the larger goal is an ongoing collaboration. Once we clear this immediate milestone together, you’ll roll straight into our regular sprint cycle, building new screens, integrating REST/GraphQL APIs, writing unit tests, and taking part in code reviews on GitHub. To get a quick read on your fit, please l...

...structured metadata for audits and future prevention. Support production operations: debugging failures, improving retry behavior, reducing skipped/error rates, and adding metrics/logging for job health. What you’ll work with TypeScript, (serverless route handlers) Supabase (Postgres + API clients) Async job delivery / queueing concepts (signature verification, replay safety) Third-party API integrations (authenticated fetch, response normalization) Operational patterns: batching, caching, rate-limit awareness, and resilience Qualifications (recommended) Strong TypeScript/Node.js backend experience, including async/concurrency patterns. Experience designing and operating production integrations with external APIs. Solid SQL/Postgres fundamentals; comfortable with...

Required Skills • 6+ years of professional software development experience • Strong expertise in Java as the backend language • Hands-on frontend development with ReactJS and modern TypeScript • Proficient in SQL with any relational database (e.g., PostgreSQL, MySQL, etc.) • Solid understanding of software engineering best practices and testing • Experience building and maintaining scalable full stack applications • Strong communication and team collaboration skills • Expertise with Python and various python packages Preferred Skills • Advanced SQL with PostgreSQL: joins, subqueries, CTEs, and query optimization • Understanding of ETL and Data ingestion • Experience with core AWS services: EC2/ECS, ELB, S3, CloudFron...

...and CSV export with fields for ID, pre-conditions, steps, expected results, and priority. 4. Traceability matrix: every generated test case links back to specific requirement lines or Jira acceptance criteria. 5. Accuracy benchmark: at least 90 % of the agent’s suggestions should be judged “useful” by two senior QA engineers in a blind review. Tech freedom I am comfortable with Python, TypeScript, or similar stacks, and we already host services on AWS. Feel free to propose the best combo of LLM, vector store, and orchestration (LangChain, LlamaIndex, or your own framework). Deliverables • Source code with clear README and setup scripts • Deployment guide for an AWS container or Lambda • A short demo video walking through Jira integ...

...catalogue through checkout, and add interactive data-visualisation dashboards so our users can see their purchase trends in real time. Clean, well-documented REST endpoints, responsive UI components, and solid unit/integration tests are all expected as part of the delivery. Tech expectations • Back end: C#, ASP.NET Core, Entity Framework, LINQ, SQL Server • Front end: Angular (latest LTS), TypeScript, RxJS, SCSS • Visuals: , Highcharts or a similar library for dashboards • DevOps: Git, CI/CD (GitHub Actions or Azure DevOps), container-ready code a plus Deliverables 1. Auth & authorisation module wired to SQL Server 2. E-commerce workflows (product CRUD, cart, payment gateway integration, order tracking) 3. Data-visualisation dashboard with at least...

Backend / Full Stack Developer (Node.js, React, MongoDB, PostgreSQL) – 5+ Years Experience Location Remote / Hybrid Experience Required 5+ Years Employment Type Full-Time About the Role We are looking for an experienced ...understanding of REST APIs and microservices architecture. • Experience with Git and CI/CD pipelines. • Good understanding of authentication (JWT, OAuth) and security best practices. • Experience with cloud platforms (AWS, GCP, or Azure) is a plus. • Familiarity with Docker and containerized deployments is an advantage. • Strong problem-solving and debugging skills. Nice to Have • Experience with TypeScript. • Knowledge of GraphQL. • Experience working in Agile/Scrum teams. • Exposure to DevOps practices. • E...

...advantage—whether that ends up being live job alerts, streamlined application auto-fill, advanced filtering or a thoughtful mix of all three. Here’s what I’m looking for you to do: • Help define the exact feature set and workflow after a quick discovery chat. • Design a clean, intuitive UI that feels native inside Chrome. • Build the extension with best-practice front-end tooling (Manifest V3, JavaScript/TypeScript, HTML/CSS). • Ensure the code can be published to the Chrome Web Store without policy issues. • Provide concise documentation so future updates are straightforward. Nice-to-have ideas—such as optional login or social-sign-in—can be scoped once the core is stable, so let’s keep early iterations lightweight ...

...banners Optional: Email/Discord/Telegram webhook alerts (Phase 2) Additional Pages Documentation / API usage (how others can use your aggregated data if you expose an API) FAQ / About section explaining methodology, sources, limitations Responsive mobile design Technology Stack Recommendations (Flexible – suggest your preferred) Frontend: React.js / 14+ (App Router), Tailwind CSS, TypeScript Backend: Node.js (Express/Fastify) or Python (FastAPI) Real-time Updates: WebSockets () or Server-Sent Events (SSE) Data Storage (optional for history): Redis (caching), PostgreSQL/MongoDB for logs API Integration: Axios/Fetch for polling, or WebSocket clients where available Deployment: Vercel (frontend), Railway/ for backend, or full Vercel if using API routes

I run a production Telegram Mini App (TMA) with a Fastify/Node.js backend that handles sales order consolidation for a small business. The system is live with real users and needs ongoing maintenance, bug fixes, and occasional feature work. Tech stack: Backend: Fastify + TypeScript, PostgreSQL (hosted on Railway), Google Sheets integration, Telegram Bot API Frontend: React 18 + TypeScript, Vite, Tailwind CSS, runs as a Telegram WebApp (Mini App) Infra: GitHub for code, GitHub Actions for CI, deployed on Railway (backend) and Vercel/static hosting (frontend). Self-signed HTTPS certs for local dev. Integrations: Telegram Bot (command handlers, webhooks), WhatsApp webhook listener, Google Sheets API for data sync What you'd be doing: Bug triage & fixes — I'...

I’m moving a full-stack Node.js / TypeScript application (Express API plus a React-Vite front end) from Replit into a secure, production-grade Google Cloud environment. Everything will be green-field, so you can design the layout cleanly without wrestling with legacy resources. Only the production tier is required. WHAT I NEED YOU TO BUILD • A GitHub-triggered Cloud Build pipeline that containerises the app, pushes to Artifact Registry, and rolls out to Cloud Run with zero-downtime updates. • Private Cloud SQL for PostgreSQL (Private IP via Private Service Access) reachable from Cloud Run through a Serverless VPC Access connector. • Secrets (DB creds, JWT keys, etc.) stored in Secret Manager and injected at runtime. • External HTTPS Load Balancer f...

...(image, PDF, text, markdown). Breadcrumb navigation. Upload button. Loads from mock JSON. 4. DASHBOARD — Status cards showing service name + green/red dot. Simple charts for usage stats (use Recharts). Recent activity feed. Loads from mock JSON. 5. DOCS — Folder tree sidebar. Markdown viewer with rendered output. Search bar. Loads from mock JSON. REQUIREMENTS: - 14+ with App Router - TypeScript - Tailwind CSS - PWA (installable on desktop and mobile) - Mock JSON data included for all 5 pages - Environment variable to switch mock data / live API - Dockerized (Dockerfile + ) - Mobile responsive - Clean component architecture MOCK DATA TO INCLUDE: - mock/ — 5 sample conversations with messages - mock/ — 10 sample emails - mock/ — Sample

I have an existing AI WhatsApp Chat that has a meeting creat...or two. 3. Any later change in Calendar (time, cancellation) triggers an equally fast WhatsApp notification. If you think you can solve or improve this. Please quote WhatsApp in your first line. I am looking to start today. If someone can solve this, I have more tasks. Tech expectations • Meta WhatsApp Business Cloud API, Google Calendar API, webhooks. • Any lightweight stack—Node.js/TypeScript, Python (FastAPI), or similar—as long as it’s easy for me to deploy on a small VPS. • Clean, well-commented code and an .env-style config so I can plug in my own tokens. I have source files on Github Timeline: ASAP. If you’ve tackled similar real-time integrations before and ...

...pooled community inventory and reconcile it continuously. • Track every offer, update the user’s balance in real time and flag failed or stale trades for manual review in an admin panel. Admin / Back-office A lightweight dashboard is needed for live game monitoring, user bans, bot status and manual item adjustments. Tech & Delivery I’m comfortable with common stacks such as Node.js, TypeScript, React, MongoDB or PostgreSQL, but I’m open to alternatives if they keep latency low and the interface snappy. Please outline your chosen stack, timeline and any hosting requirements when you reply. Acceptance criteria 1. Site replicates Bloxybet’s UX/UI closely (no original copywriting required). 2. Unlimited simultaneous coin-flip rooms ...

...konfigurierbarer Farbe, Strichstärke und Opazität • Textwerkzeuge für Überschriften, Fließtext und einfache Formatierungen • Datenanbindung an Grafana: ausgewählte Objekte sollen Werte aus Grafana-Panels anzeigen bzw. aktualisieren können (REST / WebSocket, je nachdem was sich anbietet) Technisches Ziel ist ein klar strukturiertes, kommentiertes Code-Repository ( + Vanilla JS oder gerne TypeScript), das ich lokal aufsetzen kann. Eine kurze README mit Installations­schritten, Build-Skript und einer Demo-HTML-Seite genügt als Dokumentation. Ich achte besonders auf: • Sauberes, modulares Konva-Layer-Management • Performante Zeichen­operationen bei vielen Objekten • Übersichtliche Menü...

NOTE - This position is for full-time freelancers, No Agencies please !! Apply with you Resume. Once the resume is shortlisted, you will have 2 rounds of interviews. Per hour rate - INR 750 Max. We’re looking for a strong full-stack developer for one of our Clients with deep experience in Node.js + TypeScript to own the end-to-end delivery of complex applications. You will move beyond standard CLI builds to architect self-hosted applications and robust backend services that integrate seamlessly with the Wix ecosystem and other platforms to follow We are a forward-thinking team that embraces modern efficiency: you will be expected to leverage AI tools like Claude Code and Cursor to accelerate development speed, streamline refactoring, and maintain high-velocity output without...

I’m midway through developing a React-based animation ...etc) onto the character then timeline auto builds: a. walk from point A to Point B for 3 sec b. Idle at Point B for 2s c. Run from Point B to Point C for 4s No hardcoding per character and reusable actions across characters and scalable to many characters+actions. These basic actions are given in JSON format. Current codebase • React 18 with functional components and hooks • Vite bundler, TypeScript, Zustand for global state • Fabric JS layer with complete functionalities like keyframe animations, track resize, drag, copy/paste etc. • DragonBones runtime libraries included via npm, still un-implemented If you have read the above, start the bid with "DragonBones". Further details ...

A real-time inventory management dashboard with role-based auth, data visualization, and PDF reporting. ​The AI Workflow: ​Architecture: Used Claude 3.5 Sonnet to design the ...Sonnet to design the Supabase schema and Row Level Security (RLS) policies to ensure data isolation. ​Frontend Velocity: Leveraged v0 (Vercel) to generate Shadcn/UI components for the dashboard layout, reducing UI coding time by ~70%. ​Logic & Integration: Used Cursor (Composer) to wire up React Query mutations and handle optimistic UI updates. ​Quality Check: AI-generated code was strictly typed (TypeScript) and reviewed. I used GitHub Copilot to generate comprehensive unit tests (Jest) for all critical business logic. ​Outcome: Shipped a production-ready MVP in 14 days with 95% test coverage on core fun...

I need a single-page performance management system built with the latest Angular release, TypeScript, and RxJS. All data will come from my live REST endpoints for employee evaluations, goals & KPIs/KRAs, and feedback & assessments, so every screen must perform full CRUD operations against those services rather than mock data. The UI must rely on Progress Kendo for Angular components—grids, forms, modals, and chart widgets—stitched together into clean, data-driven dashboards. Tables should support sorting, filtering, paging, and inline edits; charts need interactive hover states and drill-downs. Routing should be configured for clear URL paths, guarded by role-based access for Admin, Manager, and Employee functions. State management is required (NgRx or a compara...

I am looking for an experienced DevOps engineer or System Administrator to deploy a completed React Single Page Application (SPA) to my Hostinger VPS. The application is built with React, Vite, TypeScript, and Python. I have the full source code and the production build (dist folder) ready to go. Scope of Work: 1. Server Setup: Access my Hostinger VPS (Ubuntu/Linux) and configure the web server (Nginx is preferred, but Apache is acceptable). 2. Deployment: Upload the production build files to the server. 3. Configuration: Configure the web server to serve the static files and handle Client-Side Routing (ensure refreshing pages doesn't result in 404 errors). 4. Domain & SSL: Point my domain to the VPS and install a free SSL Certificate (Let's Encrypt/Certbot) for HTTPS...

...editing Exports layout as PNG Stores layout as JSON OpenAI will be used for suggestion logic (room sizing, adjacency planning, vastu suggestions), but geometry placement must be rule-based. Required Technical Skills Core (Must Have) Strong React / experience (2+ years) Experience with Canvas or SVG rendering: (Preferred) Or custom SVG rendering Strong JavaScript / TypeScript logic Experience building interactive UIs: Drag and drop Resize handles Coordinate positioning Good understanding of: Geometry calculations Coordinate systems (x, y, width, height) Scaling and proportions Collision detection (prevent overlap) Ability to structure clean modular code Backend / Integration (Basic Required) Ability to integrate REST APIs (NestJS backend) Handle structured JSON layout

I’m forking and need a seasoned TypeScript engineer who is totally at ease working Git-first and can dive straight into a Nostr codebase. The immediate goal is to introduce a suite of non-public features around improved listings and, above all, a powerful personalised content-suggestion layer. Scope • Extend the existing front-end and back-end (TypeScript, React, Node) with the new private listing modules I will outline in Figma and Notion. • Build a recommendation engine grounded in socio-psychology principles rather than the usual collaborative or content-based filters. I will supply the research notes and sample scoring model; you will translate them into production code, unit tests, and API endpoints. • Keep everything behind a feature flag so...

...JWT, authentication) ✓ MySQL database design and optimization ✓ Video streaming experience (HLS, DASH, adaptive bitrate) ✓ Payment gateway integration (Razorpay, Stripe) ✓ AWS or Google Cloud experience ✓ Git version control (professional workflow) TECHNICAL STACK (Must be proficient): ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Frontend: • React.js 18+ with TypeScript • State management (Context API or Redux) • Tailwind CSS or Material-UI • or similar player • Responsive design (mobile-first) • React Native (bonus for iOS/Android apps) Backend: • Node.js 18+ with • RESTful API design • JWT authentication & authorization • MySQL with Sequelize ORM • Redis for caching • BullMQ fo...

...interviews and technical discussions Build and maintain web applications and AI-powered systems Develop frontend and backend features Create and integrate APIs and cloud services Work with modern AI tools and machine learning solutions Write clean, scalable, and production-ready code Collaborate professionally with remote teams Required Skills Frontend Development React, , React Native TypeScript, JavaScript (ES6+) Redux Toolkit, React Query Tailwind CSS, HTML5, CSS3 Responsive UI design Progressive Web Apps (PWA) Backend and API Development Node.js, Java, Python, Go, C#, or .NET Core Flask, FastAPI, or Django REST APIs, GraphQL, or gRPC Microservices architecture Machine Learning and AI TensorFlow, PyTorch, Scikit-Learn, or similar frameworks Experience work...

I’ve built the backend of my project with and TypeScript, tying in Drizzle ORM for data access, for authentication, and express-session for state management. Before I push forward, I need an experienced full-stack developer to comb through the codebase and give me a frank, thorough assessment of its overall code quality. Your focus will be exclusively on the backend. I’m after insights on readability, maintainability, performance, security best practices, and any TypeScript typing issues you spot. Feel free to point out anti-patterns in middleware, routing, session handling, or ORM usage; I want practical recommendations I can act on straight away. Deliverables • A concise written report (Markdown or PDF) summarising strengths, weaknesses, and concrete ...

My ...specialist who can dive straight into the existing codebase, resolve those glitches, and then extend the app with the new functionality I have planned. Here’s what I need you to handle: • Identify and squash the reported bugs so there are no unexpected console errors or broken flows. • Build the new features I’ll outline during our kick-off call, following the project’s current coding standards (TypeScript, RxJS, Angular CLI, SCSS). • Leave the code cleaner than you found it—unit tests updated, comments clear, and lint warnings at zero. All work will be reviewed on a feature branch in Git; once the fixes and additions pass testing and CI checks, we’ll merge to main. If you’ve taken legacy Angular projects to the next lev...

Hi! I’m looking for a developer to help me turn my existing web app, Neonatal Study Buddy (NSB), into iOS and Android mobile apps using Capacitor. I am starting my second round of beta testing within the next 2 weeks. About NSB: NSB is a web-based neonatal education platform (React/TypeScript, Replit backend) that delivers AI-generated lessons, cases, MCQs, and clinical reasoning support for neonatal learners. It already functions fully in the browser and uses Replit Auth + Stripe for subscriptions. What I need: I do not want a native rewrite. I want to wrap the existing web app inside a Capacitor WebView and publish it to the App Store and Google Play. Developer Deliverables: 1) Create a Capacitor wrapper project 2) Configure it to load: 3) Ensure Stripe

...and database layers who can translate that depth into clear, structured technical training sessions. Your core mission is to design and deliver training that sharpens our developers’ practical skills. Expect to break down real project scenarios, walk through architectural decisions, explain code quality best practices, and answer ad-hoc questions as they come up. We work mostly with JavaScript/TypeScript, React, Node.js, and PostgreSQL, so fluency in these (or closely related stacks) will help you connect quickly with the team. Deliverables • A short training plan outlining topics, session length, and learning objectives • Live or recorded sessions (remote is fine) with interactive Q&A • Lightweight reference material or code snippets that reinforce...

...Backend Development (Node.js/TypeScript) API: Build the REST API (NestJS/Fastify) for merchant payment intents and webhooks. Workers: Build the fault-tolerant "Watcher" (indexing) and "Sweeper" (fund movement) services. Database: Design and migrate the PostgreSQL schema for high-integrity financial records (idempotency, audit logs). 3. Frontend Development (React/) Admin Console: Build a secure, internal dashboard to view payment flows, manual sweep overrides, and system health (e.g., "Low Gas" alerts). 4. QA & Handoff Testing: Write an E2E test suite using Hardhat/Anvil (forking Mainnet) to simulate reorgs and edge cases. Documentation: Deliver API docs (Swagger/OpenAPI) and a "Runbook" for operations. Tech Stack Requirements ...

...cases/features) based on Admin UI. Deliver continuous new use cases (frontend tile + backend workflow + HeyGen integration). Provide ongoing platform maintenance (bugfixing, hardening, small improvements). Pricing model: Fixed package for multi-tenancy/entitlements. Flat rate per new use case (continuous stream, varies by customer). Hourly rate for anything beyond these two fixed scopes. Tech stack: TypeScript, (API/backend), React 18 + Vite (frontend), PostgreSQL + Prisma, Docker Compose, Nginx, MinIO (S3), GitLab CI/CD, hosted on Hetzner (EU/Germany). Key responsibilities: backend auth/authorization patterns (RBAC/ABAC), tenant isolation in DB queries/services, schema + API extensions, frontend entitlement enforcement, HeyGen workflow integration, deployment/CI improvemen...

...React-based analytics dashboard that blends traditional e-commerce features with rich, interactive visualisation. The frontend should expose three core user flows—product catalog browsing, a lightweight shopping cart, and secure user accounts—while simultaneously presenting business metrics through charts, tables, and geographic maps. React 18 will be the framework of choice. Feel free to introduce TypeScript, Redux Toolkit (or Zustand) for state, and a component library such as MUI or Ant Design so long as the final bundle stays lean. For the visual layer, any proven library—Recharts, , Victory, or D3—works, provided the components are responsive and can be themed to match the existing style guide. Key expectations • Clean, component-driven code ...

... • Technologie: Nutzung der Business Central REST-API als zentrales Gateway; auf Shopify-Seite gern native REST-Endpunkte oder GraphQL, solange die Lösung konsistent bleibt. • Modularer Aufbau, sodass künftige Erweiterungen (z. B. Kundendaten) mit minimalem Aufwand eingebunden werden können. • Sauberes Fehler-Handling mit Logging und Retry-Logik. • Gut strukturierte Codebasis (z. B. in TypeScript, C# oder einer anderen modernen Sprache), versionskontrolliert in Git. Lieferumfang 1. Voll funktionsfähige Integrations­anwendung (Quellcode + Build-Skripte) 2. Installations- und Betriebsdokumentation für internes Team:  – alle einstellbaren Parameter  – API-Endpunkte und Datenflüsse  &nda...

My live SaaS runs on React, is deployed to Vercel, and stores data in Supabase. Production users are already in the system, so every change has to be safe, targeted, and fast. We are providing booking system for photography studio Issue 1 – Mismatched price between generated receipt and system Issue 2 - Time locking issue on booking form page (Time slot should locked when user paid , but there is other time slot that locked by unknown reason) Issue 3 - Booking & payment issue via FPX. These bugs exist where payment is sucess but booking not made. Payment is fail but booking is made. Issue 4 - Other bugs that will be added later Deliverables • Pull request(s) for each of the fixes and refinements • Brief deployment notes so I can push straight to Vercel I...

Security Engineer to implement advanced application-layer security improvements, session control, and structured framework upgrades. This is a higher complexity engagement involving architectural work and controlled d...implementation is optional based on feasibility assessment. 3. Framework and Dependency Upgrade Upgrade and related dependencies to address security vulnerabilities. Requirements Structured dependency audit Incremental upgrade plan Code refactoring as needed Comprehensive regression testing Zero downtime deployment strategy Rollback procedures Technical Environment Frontend: , React, TypeScript Backend: Node.js, API routes Database: AWS RDS Infrastructure: Elastic Beanstalk, ElastiCache, VPC CI/CD: CodePipeline No production patient data access provided.

Security Engineer to implement advanced application-layer security improvements, session control, and structured framework upgrades. This is a higher complexity engagement involving architectural work and controlled d...implementation is optional based on feasibility assessment. 3. Framework and Dependency Upgrade Upgrade and related dependencies to address security vulnerabilities. Requirements Structured dependency audit Incremental upgrade plan Code refactoring as needed Comprehensive regression testing Zero downtime deployment strategy Rollback procedures Technical Environment Frontend: , React, TypeScript Backend: Node.js, API routes Database: AWS RDS Infrastructure: Elastic Beanstalk, ElastiCache, VPC CI/CD: CodePipeline No production patient data access provided.