┌──────────────────────────────────────────────────────────────────┐
│  > CS Undergrad @ Thapar Institute of Engineering & Technology   │
│  > Ex SWE Intern @ PAASA (YC S24) — sole backend engineer        │
│  > Shipped production payment infrastructure at scale            │
│  > Open source contributor — merged into 20k★ repos              │
│  > Executive Board, OWASP TIET — ran HackOWASP with 1000+ devs   │
│  > Top 10 / 1200+ teams — HACK4DELHI 2026 (IEEE × Govt of Delhi) │
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I build systems where correctness isn't optional. Payment flows, distributed runtimes, concurrency-safe APIs — the kind of infra that needs to work right the first time, every time.

Mar 2026 – May 2026 · Remote

• Owned the full backend of a live fintech product managing $19M+ AUM — zero transaction integrity violations in production
• Architected payment infra: API Gateway → ELB → NGINX → Kafka → Docker/K8s, maintaining p50 <1s and p99 <2.5s under concurrent load
• Built blue-green K8s deployments with Prometheus + Grafana, reducing MTTR to minutes from anomaly to root cause
• Enforced Luhn algorithm, KYC/AML, GlomoPay webhooks with idempotency key enforcement and atomic rollback

TypeScript · Kubernetes · Optimistic Concurrency Control · Apr–May 2026

Engineered a K8s lease orchestration layer that prevents sandbox double-allocation under concurrent API load via resourceVersion semantics and optimistic concurrency control. Zero session state corruption across 8 coordinated sandbox runners on a multi-replica Kind cluster.

→ Lease contention · OCC conflicts · FIFO failure recovery · Promise-based locking · Process isolation

Node.js · PostgreSQL · Redis · Prisma · Docker · Feb–Mar 2026

Replaced O(N) SQL scans with Redis sorted-set Token Bucket rate-limiting (O(log N)). Eliminated 100% of P2002 race conditions across parallel write operations via indexed cursor pagination and atomic transactions. Push-to-deploy CI/CD with zero manual errors.

→ RFC-compliant headers · Prisma connection pooling · Atomic rollback · GitHub Actions

[✓] Top 10 / 1200+ teams  →  HACK4DELHI 2026 (IEEE × Government of Delhi)
[✓] 1500+ rating          →  LeetCode  |  200+ problems: graphs, DP, concurrency
[✓] 3 merged PRs          →  YC-backed OSS repos (MedusaJS, Theneo)
[✓] HackOWASP 8.0 OEC     →  80+ sponsors, 1000+ participants

_{Building production systems one commit at a time · prathamranka.in}