We are a team of platform engineers dedicated to handling the intersection of legacy data and modern streaming. Collectively, we have designed, built, and operationalised a large-scale ecosystem of Oracle XStream-based CDC pipelines in production at MarketAxess, a leading fintech platform for fixed-income trading. We specialise in solving the engineering gaps left by standard tools: handling unbounded numerics, automating SCN recovery, and implementing continuous reconciliation. Driven by a "Data Migration as Code" philosophy, we utilise SpecMesh and full-stack local testing to deliver pipelines that are verifiable, resilient, and operationally mature.