Karekezi Caleb Buhungiro - Senior Software Developer

01 — Work History

Experience

Senior Software Developer

Finology Sdn Bhd · Malaysia

Mar 2023 — Present

Fintech Insurance

→ Mentored and led a cross-functional team of frontend and backend developers, ensuring high code quality and collaborative output.
→ Defined the architecture of a flagship product now live in production, serving over a million users across health and automotive insurance verticals.
→ Built and maintained performant, accessible React-powered UIs within a fintech ecosystem connecting banks and insurance providers.

Full Stack Developer

Luxoft · Malaysia

Apr 2022 — Mar 2023

Real Estate Hospitality

→ Delivered across two enterprise domains - a real estate platform and an international hotel management system.
→ Built a reusable React component library that accelerated frontend development across both project teams.
→ Contributed to technology strategy for migrating legacy systems to a modernized, maintainable stack.
→ Helped architect the transition from monolithic applications to a microservice-based architecture.

Full Stack Developer

Finology Sdn Bhd · Malaysia

Mar 2019 — Apr 2022

Fintech Insurance

→ Developed insurance purchase and management dashboards for a fintech platform bridging banks and insurance providers.
→ Built microservices using Java and Spring Boot, handling core business logic at scale.
→ Managed deployments on AWS-hosted applications and administered Linux servers in production.
→ Developed modern UIs with React.js and TypeScript; wrote automation bash scripts.

Full Stack Developer

Freelance · Rwanda

Jul 2017 — Mar 2019

→ Delivered web solutions for clients including Never Again Rwanda (NAR) and the Peacebuilding Institute (PBI).
→ Built and shipped projects using Laravel, Drupal, and WordPress PHP frameworks.
→ Gained deep expertise in Bootstrap, Material CSS, Express, and Node.js for full-stack development.
→ Implemented unit and integration tests using Jest, Mocha, and Jasmine to ensure code reliability.

Years Experience

Companies

Industries

1M+

Users Impacted

02 — Capabilities

Skills

Frontend

React.js Vue.js TypeScript JavaScript HTML5 CSS3 Tailwind Bootstrap

Backend

Node.js Java Spring Boot PHP Laravel Python Django Bash

Databases

PostgreSQL MySQL MongoDB

DevOps & Cloud

AWS Docker Kubernetes CI/CD Linux

Testing

Jest Mocha Jasmine JUnit Cypress

Architecture

Microservices REST APIs System Design Tech Leadership Code Review

03 — Background

Education

2013 — 2017

Bachelor of Science

University of Rwanda

2009 — 2012

MPC

Lycee de Kigali · Mathematics, Physics and Computer Science

Open to opportunities

Ready to build something remarkable together?

I'm always open to discussing new projects, creative ideas, or opportunities to be part of your vision.

karekkhaleb@gmail.com