Vetted engineers with verified commercial track record in Full Stack Development
Full Stack Developer | Backend Developer | Software Developer | AI Developer
Full stack developer covering backend services and frontend delivery, with growing specialization in integrating AI features such as classification and retrieval into product workflows.
Staffing a web application with separate frontend, backend, and DevOps contractors creates coordination delays, interface misunderstandings, and finger-pointing when bugs occur. A senior full stack engineer takes a feature from relational schema design through backend API endpoints to the responsive frontend interface.
ProofDevs connects you directly with independent full stack engineers who operate as self-sufficient product builders, eliminating project management bloat and agency markups.
| Operational Metric | Agency Multi-Specialist Team | ProofDevs Solo Full Stack Senior |
|---|---|---|
| Blended Hourly Cost | $160 – $260 / hr (across 3 roles) | $50 – $100 / hr |
| Coordination Overhead | Daily standups, API contract syncs, PM management | Single engineer owns schema, API, and UI layers |
| Feature Velocity | 2 – 4 weeks per feature handoff | 3 – 5 days from schema migration to deployed UI |
| Direct Communication | Account managers and ticket dispatchers | Direct technical collaboration with the engineer |
| Deployment Responsibility | Split between frontend, backend, and DevOps | Single accountable engineer responsible for end-to-end delivery |
Modern full stack development requires deep discipline in client-server boundaries. With frameworks like Next.js App Router and Remix, developers must understand server-side data fetching, streaming hydration, and edge computing.
Senior full stack engineers design relational schemas with strict constraints, write type-safe API boundaries using tools like Zod or tRPC, and build accessible, responsive user interfaces. They avoid bloated client-side bundles by keeping heavy operations on the server.
Furthermore, full stack specialists handle secure authentication flows, OAuth providers, payment webhooks, and background queue workers without requiring additional infrastructure specialists.
Our full stack developers write type-safe TypeScript across both frontend and backend layers, ensuring schema changes immediately reflect in client UI types and compile-time checks.
Architecture Rule: End-to-End Type Safety
Relying on loosely typed API payloads leads to runtime crashes when backend models evolve. A senior full stack engineer enforces end-to-end type safety from database schemas (via Prisma, Drizzle, or Kysely) through validated API contracts directly to frontend React components.
Full stack engagements range from rapid MVP feature additions to comprehensive platform builds.
Independent full stack engineers charge between $50 and $100 per hour based on specific stack depth (e.g. Next.js, Node.js, Python, PostgreSQL). You retain 100% ownership of all Git commits, database migration files, API documentation, and deployment infrastructure keys upon milestone approval.
Matching takes 2 to 4 hours. You receive candidate profiles with verified track records in shipping complete web applications.
Rates range from $50 to $100 per hour, depending on technical depth in Next.js, TypeScript, PostgreSQL, and cloud deployments.
A full stack engineer is ideal for early-stage products, MVPs, and feature teams where one person can build entire features without cross-team handoff delays.
Yes. Verified engineers write unit, integration, and end-to-end tests using frameworks like Vitest, Jest, and Playwright.
Yes. Many engagements run on part-time agreements of 10 to 20 hours per week with clear sprint deliverables.
