Emmanuel Noel Zappy Yeboah
Yep, a very long name.
I've been building software since 2018 — starting with a Udemy course, earning my BSc in Computer Science from University of the People in 2024, and eventually co-founding SusuPaa, a fintech platform now processing over $80,000 (₵900,000) in monthly transaction volume across Ghana's mobile money rails. Along the way I built Voltax, an open-source SDK that unifies African payment aggregator integrations, and contributed to GHQR — Ghana's national QR payment system — at Hubtel. What drives me isn't just engineering. It's the fact that good financial infrastructure changes what people can do with their money. When a savings group in Accra can track their contributions in real time, when a small business in Kumasi can accept mobile payments reliably, that's not a technical achievement. That's a real change in someone's life. That's what I'm here to build.
Currently open to senior backend and fintech engineering roles.
Remote-first. Specifically interested in roles at companies building payment infrastructure, or financial systems for emerging markets.
Get in touch →Where I've built.
SusuPaa (Pavex Technologies Ltd)
Apr 2025 – PresentCo-founder & Lead Engineer
Co-founded and built a fintech platform digitizing traditional susu savings groups across Ghana — from first commit to ₵900,000 ($81k USD) in monthly transaction volume with 99.9% transaction reliability. I designed and operate the custom double-entry ledger that is the system of record for every contribution, payout, and group balance, and built an atomic claim pattern over a PGBoss job queue to guarantee exactly-once processing of payment jobs under concurrent load. Mobile money collections and disbursements run through aggregator rails (Hubtel, Moolre), covering MTN MoMo, Telecel Cash, and AirtelTigo end users. Also responsible for the Python and TypeScript services, the React/TypeScript administrator dashboard, and the observability stack — Prometheus, Grafana, Loki, plus PostgreSQL WAL archiving to S3 for point-in-time recovery.
Brif Africa
2024 – PresentCo-founder & Lead Full-Stack Engineer
Co-founded the company and own its entire technical function — platform architecture, infrastructure, and delivery. Built the editorial platform on Next.js App Router, improving Core Web Vitals by 35% and user engagement by 18% through SSR/ISR strategy and image delivery work. Also built and deployed a standalone asynchronous text-to-speech microservice (FastAPI, kokoro-onnx) for CPU-only inference, adding audio narration across the publication.
Fetch Agent (Commonwealth Media)
Sep 2024 – Dec 2025Senior Backend Engineer
Led backend for a US real estate platform. Scaled APIs to 50,000+ daily requests at sub-200ms response times. Built the proprietary agent-ranking algorithm that improved user-to-agent conversion.
RBL Matchmaking LLC
Apr 2024 – Oct 2025Lead Full-Stack Engineer
Executed a zero-downtime migration of 170,000 users from a legacy PHP/MySQL stack to Node.js and PostgreSQL. Built the WebSocket real-time messaging system now serving 200,000 monthly active users. Rebuilt the entire mobile application in React Native and delivered all React landing pages and marketing web surfaces for the platform.
Hubtel
Feb 2024 – Oct 2024Software Engineer
Led frontend development of Hubtel for Hospitals — Ghana's first comprehensive healthcare billing platform, deployed at Korle Bu Teaching Hospital. Built three distinct role-based React portals serving Patients, Caregivers, and Administrators. Also contributed to GHQR, Ghana's national interoperable QR payment infrastructure.
Built Financial Technologies (formerly Built Accounting Services Ltd)
Sep 2021 – Oct 2024Lead Mobile & Web Engineer
Built and shipped the company's full digital product suite — the built.africa Next.js web platform serving SMEs across 14+ African countries, two production React Native apps (Built Accounting, scaled from 700 to 50,000+ installs, and Built Lite, an offline-first app for low-connectivity environments), and the Ejuma HR platform. Delivered wallet, POS, invoicing, payroll, and automated accounting tools for Ghana's informal SME market.
Wordnox
Jul 2019 – Aug 2021Frontend Engineer
My first professional role. Where I learned what it means to build software that serves real users — not just passes tests.
How I think about building.
"Ship, Then Polish"
Working software that ships beats perfect software that doesn't. I care deeply about code quality, but I care more about systems that are actually in production serving real users.
"Code is Communication"
The best codebase is the one your team can read, understand, and confidently change six months later. I write for the next engineer, not just the machine.
"Africa First, World Ready"
I build for African markets first — mobile money, low-bandwidth, high-trust constraints. That discipline makes everything I build more robust everywhere.
Other things worth knowing.
Open Source
I build and maintain open source tools including Voltax — an open-source SDK unifying African payment aggregator integrations. Available for use and contribution on GitHub.
View open source work →Writing
I write about software architecture, African fintech, and the hard decisions that come with building systems at scale. No fluff.
Read the notes →Based in Accra
I work from Accra, Ghana — and serve clients across Africa and internationally. Remote-first, async-friendly, and timezone-flexible.
Let's work together →