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Sampath Achalla
Mid-level Python Full-Stack Engineer specializing in AI microservices and cloud data platforms
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About
Backend-leaning full-stack engineer in fintech/payments who shipped an end-to-end Stripe payments + webhook system for a financial microservices platform, emphasizing ledger accuracy via idempotency, transactional writes, retries, and DLQs. Also delivered a real-time React/TypeScript payment status dashboard informed by user interviews, and improved production performance by 35% p95 latency through PostgreSQL tuning and Redis caching on AWS.
Experience
Education
Key Strengths
- Shipped end-to-end Stripe payments + webhook processing for financial microservices
- Designed idempotent, transactional webhook handlers to prevent duplicate/out-of-order ledger corruption
- Built secure FastAPI APIs with OAuth2/JWT, versioning, and structured error handling
- Strong PostgreSQL data modeling with integrity constraints and performance-focused indexing
- Performance troubleshooting and tuning (EXPLAIN, composite indexes, N+1 reduction, Redis caching) resulting in 35% p95 latency reduction
- Production AWS operations (Docker, CloudWatch monitoring, scaling during peak-traffic incidents)
- Customer-facing React/TypeScript feature delivery with UX polish and iteration from user feedback
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