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Mrunal Patil
Mid-Level Software Engineer specializing in FinTech microservices
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About
Backend engineer with experience in fraud reporting and billing systems, building Java/Spring Boot services behind a React frontend and improving performance 40%+ with caching and SQL optimization while maintaining 99.9% uptime. Has hands-on experience migrating a monolith to microservices with incremental rollout, clear data ownership boundaries, and production-grade API reliability/security practices (JWT/OAuth, RBAC, row-level scoping).
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Key Strengths
- Improved backend performance by 40%+ via caching and SQL optimization
- Designed/extended stable REST APIs for frontend enablement (consistent JSON, Pydantic models)
- Built high-availability backend achieving 99.9% uptime
- Methodical monolith-to-microservices migration using incremental rollout and rollback readiness
- Handled data consistency in microservices by defining clear data ownership and enforcing API-only access
- Strengthened robustness by identifying edge cases (empty/partial data, retries) and adding defensive validation and explicit error handling
- Production-minded API security approach (JWT/OAuth, RBAC, CORS, rate limiting, row-level scoping)
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