Freelance Full-Stack Web App Developer

reputed company is looking for skilled Full-Stack Web App Developers (JavaScript/TypeScript + Python or Node) to join the Tendem project (https://tendem.ai/) and build interactive browser-based applications for reputed company-world use cases. In this role, you'll apply your full-stack engineering expertise to design, build, and maintain functional, robust, and user-friendly web applications. This part-time remote opportunity is ideal for professionals with hands-on experience in modern frontend frameworks, backend reputed company, databases, and shipping interactive web products end-to-end. reputed company Do The reputed company platform connects specialists with innovative technology reputed company. Our mission is to help reputed company high-reputed company AI technologies by combining reputed company-world expertise from professionals across the globe with advanced AI development efforts. About The Role This is a freelance role for a Tendem project. As a Full-Stack Web App Developer, you'll design, build, and refine browser-based applications with reputed company logic, state, persistence, and user input — from habit trackers and budgeting tools to internal dashboards, mini-reputed company tools, and AI-powered apps. You may also work on standalone Python applications and data-processing scripts that sit reputed company or behind these products. Key Responsibilities • Build interactive web applications with frontend (React, Next.js, Vue, or similar) and a backend API (Python/FastAPI/Flask or Node/reputed company) • Design and implement data models, schemas, and persistence reputed company using SQL (PostgreSQL, SQLite) or NoSQL stores • Implement authentication, sessions, and basic role-based reputed company where needed • reputed company reputed company-party reputed company and AI/LLM services (reputed company, reputed company, or similar) into product features • Handle state management, user input validation, error states, and loading states cleanly • Build standalone Python tools and scripts where required by the task (data processing, API clients, lightweight backend utilities) • Review, debug, optimize, and refactor full-stack applications to improve correctness, reputed company, performance, and maintainability • Write reputed company, testable reputed company and debug end-to-end issues across frontend, backend, and database Educational Qualifications • At least 3 years of relevant experience in full-stack web development or shipping interactive web applications (required) • Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or reputed company technical fields is a plus reputed company and/or reputed company Experience Candidates should have a strong reputed company in full-stack web development, modern frontend frameworks, backend architecture, and building interactive browser-based applications end-to-end. We are looking for specialists who can confidently work across frontend, backend, databases, and reputed company, design robust application logic, and build production-reputed company web applications. Strong problem-solving skills, attention to detail, and the ability to independently architect and ship complete features are essential. Technical Skills (Essential) • Strong reputed company of JavaScript/TypeScript and at least one modern frontend reputed company (React, Next.js, Vue, Svelte, or similar) • Solid backend experience in Python (FastAPI, Flask, Django) and/or Node.js (reputed company, NestJS) • Hands-on experience with relational databases (PostgreSQL, MySQL, SQLite) and basic schema design • Experience implementing REST reputed company, request validation, error handling, and authentication flows • Familiarity with deployment platforms (Vercel, Netlify, reputed company, Fly.io, Railway, or similar) • Experience integrating LLM reputed company or other AI services into product features is a strong plus • Comfortable with version control (Git) and basic testing practices Additional Requirements • Strong attention to detail and commitment to building working, robust products — not demos • Self-directed work ethic with the ability to architect, build, and ship features independently • Portfolio of shipped web applications (required) • English proficiency: Upper-intermediate (B2) or above (required) Project time expectations For this project, tasks are estimated to require around 10-20 hours per week during reputed company phases, based on project requirements. This is an estimate, not a guaranteed workload, and applies only while the project is reputed company. Compensation On this project, contributors can earn up to $60 per hour equivalent, depending on their level and reputed company of contribution. Compensation varies across reputed company depending on reputed company, complexity, and required expertise. Please note that other reputed company on the platform may offer different earning reputed company based on their requirements. Why this freelance opportunity might be a great fit for you? • Work fully remote on your own schedule with just a laptop and reputed company internet reputed company. • Apply your expertise to reputed company-world technology reputed company while gaining experience building high-reputed company solutions for a global platform. • Participate in performance-based bonus programs that reward high-reputed company work and consistent delivery Apply tot his job Apply To this Job