About me
Engineer by craft, builder by obsession.
Biography
I'm Neville James Achieng — a full-stack developer and AI engineer based in Nairobi, Kenya. I build production systems end to end: enterprise governance platforms, AI-powered products, and the unglamorous infrastructure that makes them reliable, fast, and secure.
My work spans board-governance and asset-management platforms used by real organizations, AI products like an automated QA platform and an AI job-search engine, and voice/LLM systems built for the way people actually speak — including English–Swahili code-switching. I care as much about latency, cost, and security as I do about the interface.
Whether it's a Next.js front-end, a NestJS API, or an LLM pipeline, I obsess over craft and the details that make software feel effortless — and I'm currently deepening my focus on AI engineering and application security.
Years Building
Projects Shipped
Happy Clients
What I do
Full-Stack Engineering
End-to-end products — Next.js front-ends, NestJS/Prisma back-ends, PostgreSQL and GraphQL.
AI Engineering
LLM & voice systems — RAG, agents, and the latency and cost work that makes them ship.
Security & IAM
Secure auth, access control, and security-minded architecture for enterprise platforms.
Design & Motion
Interfaces that feel effortless — considered layout, motion, and the small details.
My Stack
Experience
2021 — PresentSoftware Developer — COSEKE Ltd
Full-stack, security and AI engineering on a multi-tenant governance platform (BoardMeets) — layered access control, eCitizen OAuth SSO, real-time collaboration, and a ~95% load-time cut. Plus a real-time voice/LLM platform and an autonomous LLM-agent QA tool.
Nairobi, KenyaSoftware Engineer — Freelancer
Web apps, data-mining solutions and mobile builds for clients worldwide — owning delivery end-to-end and managing the client relationship.
RemoteFrontend Developer — ElanyOka
Designed and built a dynamic e-commerce platform in React.js from Figma — responsive layout and modern UI/UX throughout.
RemoteTeam Member — Kuku Foods (KFC)
Sales operations, inventory control and quality standards in a high-volume, customer-facing environment.
Nairobi, KenyaEducation
2016 — PresentB.A. Industrial Chemistry & Management — Kenyatta University
Bachelor's degree blending chemistry, management, and computer studies — an interdisciplinary base that sharpened analytical thinking and problem-solving.
Software Development (Full-Stack) — Moringa School
Comprehensive full-stack training — JavaScript, Node.js, React, Python, Flask, SQL, MongoDB — with multiple practical projects from enterprise tools to e-commerce.
Cybersecurity Fundamentals — Moringa School
System security, network protection, and secure coding practices — complementing my full-stack development work.
Mobile Development — Power Learn Project
Specialised training in mobile application development — modern frameworks and best practices for responsive, user-friendly apps.
Full-Stack Development — Self-Taught
Continuous self-directed learning across modern web technologies — open-source contributions, communities, and shipping personal projects.