specializing in backend architecture, fintech infrastructure, and distributed systems — Go, Node.js/NestJS, and Python across payments, compliance, and AI automation.
I design and build the backend systems fintech and SaaS companies run on — from KYC/AML onboarding and payment ledgers to distributed microservices and AI automation platforms. Over the last few years I've led engineering teams, architected systems processing real transaction volume, and shipped production infrastructure for companies across Nigeria, Canada, and the US.
Get in touchDesigning scalable microservices, API gateways, and database architectures that hold up under production load — Go, Node.js, NestJS, PostgreSQL, Redis, RabbitMQ, Docker.
Building secure onboarding, KYC/AML, fraud detection, and payment infrastructure — ledger accounting, banking integrations, and compliance workflows that scale.
Architecting AI-driven automation and LLM-powered services, and leading cross-functional engineering teams from technical strategy to on-time delivery.
A multi-tenant Learning Management System with a secure, high-performance video streaming API — content-protected playback, AWS CloudFront delivery, and edge functions for low-latency streaming across regions.
Developed a robust and efficient cross-border payment backend application designed to facilitate seamless transactions between Nigerian Naira (NGN) and United States Dollar (USD). This application provides users with a reliable and secure platform to send money between the two currencies, ensuring a smooth and hassle-free experience for individuals and businesses alike.
Led development of a scalable property listing search platform using Go and Elasticsearch, cutting query response times by over 60% while supporting complex filters (price, location radius, amenities) across a global user base.
Architected secure customer onboarding for a US fintech platform — end-to-end KYC, AML screening, and fraud detection via NIBSS BVN/NIN integrations — alongside high-throughput payment infrastructure for transfers, bill pay, and double-entry ledger accounting.
Architected and modularized core infrastructure into independent components for a global client base, and built a self-contained Go deployment that bundled the entire application into a single portable executable.
Architected reusable AI service layers and modular Python backends powering intelligent chat agents, multimodal content generation, and e-commerce automation across WooCommerce, Etsy, Square, and AliExpress.
Reach me out at kelechi.webdev@gmail.com