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Sanskar Pandey
Junior Full-Stack Java Developer specializing in FinTech microservices
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About
Full-stack engineer with production experience building a real-time order tracking system using React + Firebase/Firestore, emphasizing audit-friendly data modeling, state-machine-based status transitions, and strong post-launch ownership (performance, security rules, reliability). Demonstrated measurable frontend performance gains by isolating real-time updates to dynamic components and applying memoization, plus backend reliability patterns (idempotency, retries) and SQL query/index optimization validated with EXPLAIN ANALYZE.
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Key Strengths
- Shipped and owned a real-time order tracking feature end-to-end using Firebase/Firestore
- Designed Firestore schema with status history for auditability and debugging
- Improved reliability by enforcing atomic updates and validating state transitions (state machine approach)
- Frontend performance optimization: reduced re-renders by splitting static vs dynamic components; achieved <600ms page load and smoother live updates
- Security-focused implementation: tightened Firebase security rules (customer read isolation, staff-only updates)
- Database performance tuning with composite indexes; validated improvements via EXPLAIN ANALYZE on larger datasets
- Built resilient backend workflow patterns with retries (transient vs permanent) and idempotency keys to prevent duplicate side effects
- Production-quality practices: testing pyramid + observability with structured logs, correlation IDs, and key metrics
- Throughput scaling via parallelizing independent tasks with concurrency control; reported ~40% throughput increase
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