Melvin Philips

Staff Engineer

Lead Bank

Roadblock Title:

What we learned (the hard way): Reconciliation at scale with serverless architecture

Time:

Tuesday - 1:00 PM (Tower C)

Abstract:

Scaling reconciliation in a financial system presents unique challenges, especially when processing massive volumes of transactional data. In this talk, we’ll share how we designed and built a scalable, serverless reconciliation system using tools like DynamoDB, AWS Lambda, ECS Tasks and Step Functions. We’ll walk through the architectural decisions, design patterns, and lessons we learned the hard way—covering topics such as data consistency, orchestration, error handling, and performance tuning. Attendees will leave with practical insights into building resilient, cost-effective financial workflows using a modern serverless stack.

Bio:

Melvin Philips is a Staff Engineer at Lead Bank, specializing in designing and scaling robust financial systems. With deep experience in web development, distributed databases, and large-scale data processing, he has built infrastructure powering mission-critical fintech services. Melvin leads the financial platform team that spans lending, cards, and deposits, and regularly shares his expertise through technical workshops and community contributions.