[Remote] Freelance Full-Stack Web App Developer

Note: The job is a remote job and is open to candidates in USA. Mindrift connects specialists with innovative technology projects to help develop high-quality AI technologies. They are seeking a freelance Full-Stack Web App Developer to design, build, maintain, and refine interactive browser-based applications, APIs, databases, standalone Python tools, and AI-powered product features.

Responsibilities

• Build interactive web applications with frontend (React, Next.js, Vue, or similar) and a backend API (Python/FastAPI/Flask or Node/Express)
• Design and implement data models, schemas, and persistence layers using SQL (PostgreSQL, SQLite) or NoSQL stores
• Implement authentication, sessions, and basic role-based access where needed
• Integrate third-party APIs and AI/LLM services (OpenAI, Anthropic, 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, security, performance, and maintainability
• Write clear, testable code and debug end-to-end issues across frontend, backend, and database

Skills

• * At least 3 years of relevant experience in full-stack web development or shipping interactive web applications (required)
• Candidates should have a strong foundation 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 APIs, design robust application logic, and build production-ready web applications. Strong problem-solving skills, attention to detail, and the ability to independently architect and ship complete features are essential
• * Strong command of JavaScript/TypeScript and at least one modern frontend framework (React, Next.js, Vue, Svelte, or similar)
• * Solid backend experience in Python (FastAPI, Flask, Django) and/or Node.js (Express, NestJS)
• * Hands-on experience with relational databases (PostgreSQL, MySQL, SQLite) and basic schema design
• * Experience implementing REST APIs, request validation, error handling, and authentication flows
• * Familiarity with deployment platforms (Vercel, Netlify, Render, [Fly.io](http://fly.io/), Railway, or similar)
• * Comfortable with version control (Git) and basic testing practices
• * 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)
• * Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plus
• * Experience integrating LLM APIs or other AI services into product features is a strong plus

Benefits

• Work fully remote on your own schedule with just a laptop and stable internet connection.
• Apply your expertise to real-world technology projects while gaining experience building high-quality solutions for a global platform.
• Participate in performance-based bonus programs that reward high-quality work and consistent delivery.

Company Overview