Aaron Kelsey is a senior backend engineer based in London with 11 years of experience and 7+ years focused on building scalable microservices and event-driven payment systems. He has driven core payments delivery and API gateway design for high-traffic current account launches, and consistently improves reliability and performance through thoughtful system design, circuit breakers, and observability. Comfortable across Kotlin, Java, Python and C++, he pairs hands-on implementation (Kafka, Kubernetes, AWS, PostgreSQL) with strong TDD and CI/CD practices to ship resilient services. Colleagues value his calm, positive collaboration and mentorship that accelerates team effectiveness. An engineer who digs into performance at the protocol and service levels, he often surfaces non-obvious optimizations that reduce latency and operational risk.
11 years of coding experience
7 years of employment as a software developer
Bachelor of Science (BSc), Computer Games and Programming Skills, Bachelor of Science (BSc), Computer Games and Programming Skills at Bournemouth University
Level 3 BTEC Diploma, Web and Games Development, Level 3 BTEC Diploma, Web and Games Development at Bournemouth and Poole College
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