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Charles McCoy
Staff Software Engineer specializing in distributed systems and FinTech payments
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About
Built and architected ML-integrated payment processing systems for PlayStation at Sony Interactive Entertainment, covering fraud determination, provider routing optimization, and model-training feedback loops in production. Brings a strong reliability and observability mindset, with concrete experience designing fallbacks, retries, correlation-ID tracing, and statistically grounded evaluation for non-deterministic systems.
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Key Strengths
- deep payments and fraud domain expertise
- architected production payment ML integrations at PlayStation/Sony
- strong reliability engineering mindset
- practical fallback and failover design
- systems thinking around latency, rollback, and consistency tradeoffs
- observability and tracing expertise
- understands evaluation of non-deterministic systems
- thoughtful prompt design with explicit failure handling
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Experience
Education
Awards
Skills
Languages
Publications
100 publications
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