Open to opportunities

Osazuwa Omosigho

@osazuwaomosigho

Message

I build high-volume banking and telecom platforms with Java, event-driven systems, and cloud infrastructure.

Nigeria

Message

What I'm looking for

I'm looking to build secure, scalable backend and full-stack products in fintech, banking, telecom, or cloud-native environments, where I can lead delivery, improve system reliability, and solve high-volume operational problems with Java and event-driven architecture.

I've migrated core banking services for Hampshire Heights Global's FCMB ROVA work from Go to Java, using Pulsar event-driven architecture to improve response times by 20% and supporting 10K+ transactions per second through Fineract Core Banking integration.

I also built MTN's IN Operations Portal, automating subscriber-support workflows and reducing daily support tickets from more than 2,000 to under 200. I delivered a React 19 and TypeScript dashboard plus a high-volume SFTP batch-provisioning service with concurrent processing, scheduling, progress tracking, and failure reconciliation.

At Access Bank, I led five developers in delivering a USSD Channel Manager Platform that reduced downtime by 40% and improved transaction speed by 70%. I built an event-driven Digital Loan Platform with RabbitMQ, cutting loan approval time by 50% and increasing loan volume by 40%.

My work spans Java, Spring Boot, microservices, AWS, Azure, Docker, Kubernetes, SQL/NoSQL databases, observability, and data analytics. I bring a test-first, data-driven approach to secure fintech, banking, telecom, payroll, and operational automation products.

Experience

Work history, roles, and key accomplishments

Current

Senior Java Developer

Current

Hampshire Heights Global

Sep 2024 - Present (2 years 1 month)

Migrated core banking services from Go to Java, implementing Event-Driven Architecture with Pulsar, improving response times by 20%. Designed and built the IN Operations Portal for MTN, reducing support tickets by 90%.