Karim S.

I build production-ready web applications that combine polished React frontends, reliable Node.js and TypeScript backends, and clean third-party integrations.

With 100% Job Success, $200K+ earned, and 5,000+ hours on Upwork, I help startups and product teams ship SaaS products, internal tools, dashboards, client portals, and AI-enabled features with strong attention to UX, performance, and maintainability.

What I can help you build:

• React and Next.js frontends with clean, responsive UI
• Node.js and TypeScript backends, REST APIs, and business logic
• SaaS features such as authentication, dashboards, billing, and admin tools
• API integrations including payments, OpenAI-powered workflows, and third-party services
• End-to-end product features with a focus on code quality, scalability, and delivery speed

I work well in fast-moving teams, communicate clearly, and care about shipping software that is both technically solid and easy for users to trust.

If you need a developer who can own features across the stack and deliver high-quality product work without heavy hand-holding, send me a message.