Vijay Wankhede

I’m a staff-level backend engineer with 6+ years designing, scaling, and operating high-availability distributed systems for fintech, payments, and consumer-facing products. I bring deep Node.js/TypeScript expertise and a functional-programming mindset using fp-ts-style patterns (Either/Task, ADTs) to build reliability into every service.

I’m trusted as a technical partner across product, design, and engineering—leading architectural design reviews, raising the technical bar through mentorship and structured code review, and shipping secure, performant services that hold up under real production load. I’ve built end-to-end payments, ledger, and consumer-facing flows, and I integrate AI-powered tooling (Claude, Cursor) into the developer experience to accelerate delivery.

In my current role, I lead the design and implementation of high-scale backend systems from zero—service topology, API contracts, data models, and rollout strategy—for a platform launching with $150M+ in user assets. I architected event-driven Node.js/TypeScript microservices on Kubernetes (AWS EKS), engineered replay-safe Kafka consumers to guarantee exactly-once semantics, and shipped an EIP-2771 signature-based settlement flow that reduces user friction while preserving cryptographic auditability.

I’ve also stood up reliability and observability from scratch (Prometheus metrics, Grafana dashboards, structured JSON logs, Sentry alerting, and SLOs), authored on-call runbooks, and built custom Claude skills for adversarial test generation, architectural review, and codegen—cutting feature lead time by ~40%. Previously, I re-architected Kafka pipelines around exactly-once semantics (lifting retention by 30%), built a TypeScript/NestJS event indexer ingesting logs from 6+ chains with reorg handling, and hardened off-chain verification against timing exploits through deterministic replay tests and invariants wired into CI.