Accomplished Lead Software Engineer and Blockchain Developer with a proven track record designing high‑performance, scalable microservice architectures across FinTech and DeFi. I work across the stack (Go, Node.js, React) and go deep on blockchain (Cosmos SDK, EVM/Solidity, Rust). I love building resilient systems, leading teams, and turning complex problems into elegant products.
- 99.9%+ uptime on production crypto payment and staking systems
- Sub‑100ms gRPC/Temporal microservices at scale
- 20× query performance via CQRS and event sourcing
- Operated validators on Aleo, Ethereum, and Cosmos with 99.8% uptime
- Backend: Golang, Node.js, Python • gRPC • Kafka • Temporal • PostgreSQL • MongoDB • Elasticsearch • Neo4j
- Blockchain: Cosmos SDK • Solidity/EVM • Bitcoin (UTXO) • Web3 • ZK (Zero‑Knowledge)
- Frontend: TypeScript • React • Next.js • Nx • Storybook • Playwright
- DevOps: AWS • GCP • K8s • Docker • Microservices • Monorepo • CI/CD
- Led microservice migrations that cut costs by 90% and boosted reliability
- Built cross‑chain DEX and staking tooling used by thousands of users
- Designed API gateways with auth, rate‑limits, and LB for 5k+ DAU
- Mentored and led teams of 8; grew juniors to mid‑level engineers
- Trustero — Serverless P2P encrypted chat (TypeScript, React)
- NightTrader — Multisig non‑custodial DEX (JavaScript, Cryptography)
- Layer — Mind mapping + task manager (Python, Kafka, Elastic, Neo4j, React)
- See my journey: TIMELINE.md
- Full details: RESUME.md
If you’re building in FinTech/DeFi, scaling microservices, or exploring ZK/Cosmos, I’d love to chat.
- Email: xojtaba@gmail.com
- LinkedIn: https://linkedin.com/in/tab-ahmadi
- GitHub: https://github.com/tab-sama