Freelance Full-Stack Web App Developer

Join the Tendem project as a Full-Stack Web App Developer 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 APIs, databases, and shipping interactive web products end-to-end.

What You Will Do

Build interactive web applications with frontend and backend API, design and implement data models, schemas, and persistence layers, implement authentication, sessions, and basic role-based access, integrate third-party APIs and AI/LLM services, and review, debug, optimize, and refactor full-stack applications.

Why It Might Be a Fit

Work fully remote on your own schedule, apply your expertise to real-world technology projects, and participate in performance-based bonus programs that reward high-quality work and consistent delivery.

Requirements

• At least 3 years of relevant experience in full-stack web development or shipping interactive web applications
• Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plus
• Strong command of JavaScript/TypeScript and at least one modern frontend framework
• Solid backend experience in Python and/or Node.js
• Hands-on experience with relational databases and basic schema design
• Experience implementing REST APIs, request validation, error handling, and authentication flows
• Familiarity with deployment platforms
• Experience integrating LLM APIs or other AI services into product features is a strong plus
• Comfortable with version control (Git) and basic testing practices
• Portfolio of shipped web applications
• English proficiency: Upper-intermediate (B2) or above

Benefits

• Work fully remote on your own schedule
• Apply your expertise to real-world technology projects
• Participate in performance-based bonus programs that reward high-quality work and consistent delivery
• Earn up to $60 per hour equivalent
• Flexible project time expectations (10–20 hours per week)