JW. Resume ↗

About

Software, AI, and the infrastructure underneath both.

I didn't start out as a software engineer. I started with telecommunications, learning how networks work, how signals move, and what happens when the systems underneath everything go down. That experience shaped the way I approach engineering. I like understanding what's happening underneath the surface, not just making something work.

From there, I moved into software and backend engineering, working with Spring Boot, APIs, microservices, banking and payment systems. I also got to work closer to the product itself, building frontend and mobile applications and seeing what it takes to turn an idea into something people can actually use.

More recently, I've been spending a lot of time on AI engineering. I've worked with RAG, document intelligence, LLM applications, and agents. What interests me isn't AI just because it's popular. I enjoy figuring out how these systems work and finding problems where they can actually be useful.

I think that's the thread running through most of what I've done. I'm curious about how things work, and I like building things once I understand them. I'm looking for opportunities where I can keep doing that, particularly across software, AI, and the systems that connect them.

Explore my GitHub ↗
01

AI Engineering

RAG systems, LLM applications, document intelligence, evaluation.

PythonLlamaIndexFAISSAnthropic API
02

Cloud & DevOps

Cloud foundations and reliable deployment workflows.

AWSDockerGCPCI/CD
03

Backend

APIs and services designed for real-world scale.

JavaSpring BootFastAPINode.js
04

Frontend

Responsive product experiences across web and mobile.

TypeScriptReactNext.jsReact Native
05

Databases

Structured data, semantic search, and observability.

PostgreSQLMySQLFAISSRedis

How I got here.

2022

Infrastructure

Engineering Intern · Kenyatta University

Learned how real networks and systems operate, from the ground up.

2024

Backend & Banking

Software Developer Intern · KCB Group

Started building production software — Spring Boot microservices for core banking systems.

2025

Fintech & Product

Junior Application Developer · PropelFin

Moved closer to actual users, leading frontend development for a fintech product.

2025

AI Engineering

AI Extern · Pfizer Document Intelligence

Started applying LLMs, RAG, and document intelligence to real clinical workflows.

Contact

Let's build something that matters.

Have a role, product challenge, or collaboration in mind? I'd love to hear about it.

wechulijac@gmail.com ↗