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Vishnu Kumar
Mid-level Full-Stack Developer specializing in FinTech and real-time payments
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About
Software engineer with deep experience in real-time payments and event-driven microservices. Built a React/TypeScript + Spring Boot system using RabbitMQ, and created an internal operations dashboard that improved visibility into message-processing workflows for engineering, support, and SRE. Strong in experimentation-driven product iteration (feature flags/A-B tests) and in scaling reliability via idempotent consumers and end-to-end observability.
Experience
Education
Key Strengths
- End-to-end ownership of customer-facing real-time P2P payments feature
- Rapid iteration using feature flags and A/B testing with production rollouts and kill-switch capability
- Balances speed and quality via automated tests, code reviews, and continuous QA feedback
- Architects complex React/TypeScript apps with modular components and clear separation of client vs server state (Redux Toolkit + React Query)
- Hands-on microservices and event-driven systems using RabbitMQ (REST + async messaging, per-service data stores)
- Solves at-least-once delivery issues with idempotency checks; addresses reliability/throughput/observability at scale
- Built and drove adoption of an internal ops dashboard for engineering/support/SRE by involving users early and piloting before broad rollout
- Prioritizes work using impact/urgency/risk informed by production data and on-call pain points
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