Gboluwaga Alamu

Senior Java Software Engineer with 6+ years of experience architecting, building, and scaling secure backend microservices, enterprise fintech platforms, and core banking integrations. Expert in Java 17/21, Spring Boot, Distributed Systems, Kafka, Docker, Kubernetes, and Relational Databases (PostgreSQL, Oracle). Proven track record leading platform architecture, enforcing fault tolerance (circuit breakers, idempotency, retries), optimizing database performance, and designing high-throughput payment and risk engines processing 500,000+ daily transactions.

Senior Java Backend Engineer - Arythium Technologies - Lagos, Nigeria

(2024-05)

• Architected high-volume Java 17 & Spring Boot microservices serving over 500,000+ daily requests with sub-200ms latency on Kubernetes/EKS.
• Designed Apache Kafka event-driven pipelines for real-time transaction processing, increasing system throughput by 40%.
• Optimized PostgreSQL schema architecture, indexing strategies, and query execution plans, delivering a 35% performance boost.
• Implemented Redis distributed caching along with optimistic/pessimistic locking via Spring Data JPA to ensure absolute data consistency under heavy concurrent loads.
• Mentored engineering teams on clean code practices, SOLID design patterns, and rigorous peer code reviews.

Java Developer / Banking Systems Engineer - SunTrust Bank Nigeria Ltd - Lagos, Nigeria

(2022-11 - 2024-05)

• Engineered TrustPay, an enterprise payment and collections platform unifying payment gateways, NIP disbursements, card/account lookups, BVN verification, and bill payments for merchants.
• Implemented strict API Idempotency (via Redis & DB keys) and state machines (INITIATED to RECONCILED) to eliminate duplicate debits, credits, and disbursements during retries.
• Built automated provider failover, exponential backoff retries, circuit breakers, and bulkhead isolation to maintain 99.99% platform availability during third-party service outages.
• Architected iFraud, a real-time Java/Spring Boot risk engine evaluating complex fraud rules in under 50ms before authorization.
• Decoupled core monolith into containerized Spring Boot microservices deployed with Docker and Kubernetes, accelerating release speed by 60%.
• Secured core platforms using Spring Security, OAuth2, JWT, and RBAC while enforcing database schema migrations using Liquibase and Flyway.
• Automated end-of-day financial reconciliation pipelines matching bank internal ledgers, provider callbacks, and settlement files.

Java Backend Engineer - M15 innovations - Lagos, Nigeria

(2021-08 - 2022-11)

• Developed scalable Java/Spring Boot REST APIs enabling dynamic multi-party integrations with rigid validation rules.
• Resolved high-concurrency PostgreSQL bottlenecks and race conditions through SQL query tuning and custom isolation levels.

Java Full Stack Developer - Kaya Africa - Lagos, Nigeria

(2020-06 - 2021-07)

• Designed normalized relational database schemas and developed full-stack web applications using Java Spring Boot and React.

IT Infrastructure Support Specialist - Access Bank Plc - Lagos, Nigeria

(2014-08 - 2020-09)

Maintained core banking infrastructure: core IT infrastructure, network connectivity, and server reliability across bank branches, maintaining 99.9% uptime for core banking applications.

• Executed disaster recovery & compliance: database backup procedures and disaster recovery simulations in strict alignment with Central Bank regulatory compliance standards.

Bachelor of Science (B.Sc.) - Computer Science - Ladoke Akintola University of Technology (LAUTECH)

Higher National Diploma (HND) - Computer Engineering - Osun State Polytechnic