Open to opportunities

Kibet arap Sum

@kibetarapsum

Full-stack software engineer building reliable products with Rust, TypeScript, React, PostgreSQL, and secure back-end systems.

Kenya

Message

What I'm looking for

I'm open to remote full-stack product development roles where I can own features end to end, build secure and reliable applications, and translate operational needs into maintainable workflows.

I’m a full-stack software engineer who enjoys taking products from an idea to a working system. I build back-end services and APIs with Rust and TypeScript, design PostgreSQL and graph-based data models, and create polished React interfaces.

My projects have included e-commerce platforms, authentication and authorisation systems, multi-tenant applications, developer tools, desktop software, and supply-chain intelligence and disruption modelling. I’m comfortable working across architecture, database design, APIs, frontend development, testing, CI/CD, and deployment.

I’m particularly interested in back-end engineering, distributed systems, developer tooling, and products that involve challenging data or systems problems. I value clear architecture, maintainable code, and understanding the problem behind what I’m building rather than simply implementing isolated features.

Experience

Work history, roles, and key accomplishments

Current

Full-Stack Developer

Current

Bit-Tech

Jan 2025 - Present (1 year 8 months)

Own full-stack delivery of commerce and administrative features using React, TypeScript, Rust/Axum, Hono, PostgreSQL, Redis, and modern component libraries. Implement secure authentication and authorisation, including session and token flows, role-based access control, input validation, structured errors, and audit-friendly logging.

React TypeScript Rust Axum Hono PostgreSQL Redis REST APIs RBAC Authentication Authorization Sqlx Docker Railway Cloudflare Workers Testing CI CD

Back-end developer

Bit-Tech

May 2024 - Jan 2025 (8 months)

I was a back-end developer for Bit-Tech mainly using Rust and its two most popular frameworks, Axum and Actix-Web to build blazingly fast, performant back-ends