Kartikey Namdev
Backend & Web3 engineer building high-performance financial infrastructure — matching engines, cross-chain payout rails and Solana programs.
What isHusher?
Husher builds non-custodial, cross-chain payment infrastructure — the settlement rails that move value across EVM chains and Solana without ever taking custody of user funds. The backend behaves like a real financial system: deterministic, idempotent, observable, and resilient to the failure of every external venue and bridge it depends on.
My role — Web3 Backend Software Engineer
I own the money-movement backend — the payout engine, the routing brain, and the bridge integrations that decide how funds actually get from A to B across chains and exchanges.
A day in the payout rails
The everyday engineering behind moving money across chains and exchanges — safely, and exactly once.
State-machine payout engine
Design and maintain a BullMQ + Prisma engine that drives every payout through an explicit lifecycle — requested → routed → bridged → settled — where each transition is idempotent, retryable, and crash-safe.
Multi-CEX routing with fallback
Build routing logic that picks the cheapest, fastest path across 4 centralized exchanges and automatically fails over when a venue is down, rate-limited, or short on liquidity.
Cross-chain bridge integration
Integrate and reconcile 3 bridge protocols — deBridge DLN, Across, and Relay — for non-custodial value transfer across EVM networks and Solana.
Reconciliation & watchers
Write jobs that track on-chain confirmations and CEX withdrawal statuses, detect stuck or partial transfers, and trigger retries or route them to manual review.
Exactly-once & double-spend safety
Guarantee a payout never fires twice using dedupe keys, DB-level locking, and idempotency guards around every side-effecting call.
Observability first
Instrument the whole pipeline with metrics, logs, and traces so on-call can see exactly where any payout sits in its lifecycle at any moment.
The road so far
Web3 Backend Software Engineer - Husher
Architected a state-machine payout engine (BullMQ, Prisma) routing through 4 CEXs with fallback. Integrated 3 bridge protocols (deBridge DLN, Across, Relay) for non-custodial EVM & Solana routing.
Full Stack Developer - Auctopus Technologies
Shipped TypeScript & React microservices in production, integrating Kafka event pipelines with complete observability (Prometheus/Grafana metrics, tracing, logging).
Web Platform Developer - Freelance (MP Tourism)
Architected a high-traffic government event platform using real-time APIs and Redis-backed caching to sustain statewide public traffic during multi-day festivals.
Matching Engine Architect (Exchange)
Built a high-performance matching engine with Redis buffer queues and WebSockets, benchmarked at 718+ ops/sec and sub-15ms average latency under stress tests.
Tech Stack
Featured Work
Exchange — Matching Engine & Trading System
A high-performance deterministic order matching engine built in TypeScript. Utilizes Redis queues for high-throughput buffering, custom sleep backoff loops for minimal CPU overhead, and live WebSocket depth updates. Benchmarked at 718+ ops/sec with sub-15ms average latency under stress testing.
Explore case studySolvault — Solana Developer Toolbox
Built a full-stack developer sandbox for Solana blockchain interactions with non-custodial wallet-based transactions. Refactored SPL Token-2022 transaction builders into a modular npm package (@solvault/core) with custom ATA derivations, fully integrated into the live Render backend API.
Explore case studyMerchant Paytm — Digital Wallet
Built a scalable Turborepo-based digital wallet monorepo. Audited and secured peer-to-peer transfers against double-spends using database-level pessimistic row locking (SELECT FOR UPDATE) inside Prisma interactive transaction blocks.
Explore case studyCMS — EV Charging Content Management System
Scalable platform with real-time data hooks, analytics, and geospatial map integration.
Explore case studyChess Town — Online Chess Platform
A real-time online chess platform built with React, Node.js, and WebSockets. Features include real-time board updates, move validation, and game state management.
Explore case studyVideo Chat — WebRTC based Video Calling Service
A high-performance peer-to-peer communication platform built with WebRTC and Socket.io. Features low-latency video/audio streaming, secure signaling architecture, and real-time connection handling.
Explore case studySmart Contracts
Voting Solana Program
A decentralized voting smart contract on Solana. Built with Anchor, featuring secure vote casting and state management.
Escrow Program
A secure escrow smart contract ensuring trustless P2P exchanges of SPL tokens. Features time-locks and multi-signature approvals.
Milestones & Awards
Deep dive: Solana & systems
Applied these concepts building escrow contracts, staking logic and real-time backend systems with WebSockets + Redis — depth that feeds straight back into the payout rails at Husher.
Core conceptsApplied & completed
AdvancedIn progress
Where I add value
I build production-grade systems across Web2 and Web3. Depending on your use-case, here's how I can contribute.
Solana / Web3 Developer
Designing secure on-chain systems for real-world financial use cases.
✦Shipping escrow and staking primitives on Solana with production-ready architecture.
Projects: Escrow · Staking · Token Systems
Full Stack Engineer (MERN)
Building scalable backend systems and real-time applications.
✦Engineered real-time systems using WebSockets + Redis for low-latency data flow.
Projects: Trading System · Real-time Dashboard