About
I am a Senior Software Engineer specializing in Backend Systems, Blockchain, and Web3 with over 8 years of experience in architecting secure, scalable, and high-performance environments. My expertise bridges traditional backend development (Node.js, Java, Rust) with deep decentralized technical knowledge, including consensus mechanisms, cryptographic primitives, and smart contract security.
Technical Focus:
- EVM Ecosystem: Proficient in Solidity, Hardhat, Foundry, and OpenZeppelin standards.
- Cardano Ecosystem: Expertise in Plutus (Haskell), Aiken, Lucid-Evolution, and MeshJS.
What I Deliver:
- End-to-end design and implementation of smart contracts and robust REST APIs.
- Seamless backend integrations for decentralized applications.
- High-assurance, secure wallet solutions and financial primitives.
I am driven by the transformative potential of DeFi and decentralized systems. I excel at transforming complex requirements into production-ready systems, optimizing for performance at scale, and ensuring the absolute security and reliability of Web3 applications.
"Be a student as long as you still have something to learn, and this will mean all your life." — Henry L. Doherty
Experience
TX Meta
Senior Backend Developer
- Architected a secure, multichain wallet infrastructure supporting 10+ digital assets with dynamic token management.
- Built a high-performance payment gateway integrating stablecoins (USDT/USDC) and mobile money for cross-border remittances.
- Developed a high-throughput transaction module for both on-chain and off-chain operations, ensuring low-latency processing.
- Mentored a team of developers and implemented rigorous CI/CD practices, significantly improving deployment reliability.
C2C Advisory Services
Lead Platform Engineer (Contract)
- Designed Java-based microservices for a large-scale financial platform serving 2M+ users, managing complex payment logic.
- Optimized transaction processing speed (TPS) by 40% through Kafka-based queueing and M-Pesa integration.
- Improved system performance by 35% using strategic database indexing and Redis-based caching layers.
- Managed containerized infrastructure on Kubernetes across GCP and Bitbucket pipelines.
Africa Blockchain Centre
Senior Backend & Blockchain Engineer
- Developed HIPAA-compliant smart contracts on Cardano for secure medical data sharing on the AfyaRekod platform.
- Led the technical delivery of TraceLedger, a blockchain-based supply chain solution for coffee bean transparency.
- Built robust REST APIs bridging Cardano (Plutus) smart contracts with traditional off-chain business applications.
- Guided an agile team of five developers, reducing delivery timelines by 30% through improved code review processes.
BandaHealth
Software Developer
- Scaled the BandaGo mobile health application middleware, reaching a 50% reduction in response times after migrating from Java to Go.
- Optimized API performance by 30% through advanced data caching strategies for low-resource environments.
- Designed and maintained secure REST APIs for sensitive patient data management, ensuring strict healthcare privacy standards.
JKUAT University
IT Support Specialist
- Spearheaded the transition from manual to digital workflows by developing a web-based research management system.
- Significantly increased research submission rates by providing a user-friendly digital proposal submission platform.
Ken Kelly
Software Engineer – Blockchain, Web3 & Backend Systems