Richard Nnaji

Visionary Software Engineer with 7+ years of experience building scalable, compliant, and resilient financial systems across payments, remittance, and agency banking. Proven ability to design event-driven microservices architectures with transactional integrity, idempotency, and observability. Expert in Java, Python, AWS, and Kafka, with deep experience in PCI DSS-aligned architecture, rollback plans, and system auditability.

Skilled in producing detailed Solution Design Documents (SDDs), defining service boundaries, modeling data flows, and ensuring reliability across distributed systems. Adept at leading architecture governance processes, defining non-functional requirements (SLAs, rate limits, recovery strategies), and mentoring engineering teams in best practices. Known for reducing time-to-market, anticipating edge cases, and driving high-velocity, design-first development.

Richard Nnaji is a seasoned software architect with 7+ years of experience in designing, building, and securing high-performance fintech systems across payments, remittance, agency banking, and merchant collections. He has led architecture for distributed microservices platforms using Java, Spring Boot, Kafka, and AWS, delivering solutions that process millions of secure transactions monthly.

At companies like PayU, Paga, E-Settlement, and CreditVille, he has designed fault-tolerant, PCI DSS-compliant systems with auditability, idempotency, and rollback strategies. He’s also driven engineering governance, authored Solution Design Documents (SDDs), and mentored developers in building production-ready, cloud-native services.

His hands-on leadership in aligning technical solutions with compliance, scalability, and business goals makes him well-equipped for architecture-driven roles in fintech environments.

Bachelor of Science in Computer Science

Nnamdi Azikiwe University, Awka, Nigeria

2014 – 2018

Provided a strong foundation in software engineering, algorithms, distributed systems, and database management—core areas that underpin modern cloud-native architecture and fintech system design.