Hi, I'm Chiemeka“Rey”MaduforFull Stack Engineer.

I build software end to end: the systems behind the scenes and the screens people use. By day, that is a live platform of real-money online games. After hours, I build Tenriva, SikerCV, Subecho and LaunchPlaces.

Start the missions Call Rey

Day job: Java, Spring Boot, Vue 3, Next.js
Building: Tenriva, SikerCV, Subecho and LaunchPlaces
Based: Europe

Missions8 available

The products and tools I build after hours, and the real-money game platform I work on every day. Pick one for the briefing.

Every project, on one page ›

The storyso far

From websites for startups, to leading game development, to the servers behind a real-money games platform.

Jestone Education and Clinify EMR
Chapter 1 · 2020 – 2021
Frontend Developer
Rebuilt Jestone's website and improved how it shows up in search, lifting traffic 20% in six weeks. Built screens for Clinify's electronic medical records, used in its pilot clinics.
Digital Product School by UnternehmerTUM, Munich
Chapter 2 · Jan – Apr 2022
Software Developer
In a 12-week programme, built a prototype decision dashboard for the Bavarian Digital Ministry, which was recommended for use across the whole state.
Green Jade Games
Chapter 3 · May 2022 – Apr 2023
Frontend Game Developer
Built a library of ready-made game interface pieces that any brand could drop into its own site, used by three teams. Also built React apps, live analytics and an automatic build-and-release pipeline.
2D game studioName withheld
Chapter 4 · May 2023 – Nov 2025
Senior Frontend Game Developer
Led frontend game development. I built the shared toolkit every game runs on, which cut the time to make a new game from two or three months to two weeks. I got the games running smoothly at 120 frames per second on high-refresh screens, ran weekly code reviews and mentored two developers.
2D game studioName withheld
Chapter 5 · Nov 2025 – now
Full Stack Engineer
I build the Java services that start games, handle player balances and keep sessions running. I led the work to connect a games partner that added over 200 games, made database changes on a live real-money system, built internal tools for the operations team, and lead backend code reviews for a team of six.
Tenriva
Chapter 6 · 2026 – now
Software that handles staff accounts in Microsoft 365 when people join a company, change role or leave. I design and build the product, the servers and the hosting.
SikerCV
Chapter 7 · 2026 – now
Solo software engineer
A CV builder that makes PDFs hiring software can read correctly, with AI help to tailor a CV to a job and payments in four currencies.

Loadoutsix roles, one person

Most of the jobs a product needs, and the tools I bring to each one.

01 / 06Backend6 tools

Backend

The part of software you do not see: servers, databases and the connections to other services that make an app work.

Kit

Java
Spring Boot
Node.js
NestJS
PostgreSQL
Redis

Chiemeka Madufor in a cap and grey jacket under a bare tree in the evening sun — Chiemeka

Characterfrom engines to engineering

Name: Chiemeka Madufor
Alias: “Rey”
Class: Full Stack Engineer
Based: Europe
2022 – 2023: MSc IT with Business Data Analytics, International Business School, Budapest
2016 – 2020: BSc Mechanical Engineering, University of Debrecen

I studied Mechanical Engineering in Hungary, then switched to software because I wanted to build things people use every day. I started with the parts people see, earned an MSc in IT with Business Data Analytics along the way, and kept learning my way deeper into how software works.

Since then I have done most of the jobs a product needs: led a team building games, worked on the servers of a live games platform, led the engineering of one software business and built another on my own. I enjoy the less visible work too: data, testing, documentation and getting releases out safely.

I am always learning something new, and I love games: playing them, taking them apart to see how they work, and making them.