I design and ship resilient, high-throughput distributed systems — where correctness, low latency, and operational clarity are non-negotiable.
11+ years of professional software engineering — with the last 8+ years focused on production Go backends: fintech ledgers, blockchain infrastructures, wallet gateways, and high-load transaction pipelines on GCP. I've been programming since I was 13 (now 33) — long before it was my career, and that foundation still shapes how I think about systems. I care about software that stays correct under pressure: idempotent flows, exponential backoff, event-driven architectures, and observability baked in from day one.
Currently architecting a non-custodial digital-asset wallet gateway at Matrix.app — multi-chain ledger sync, HSM/MPC signing flows, and enterprise-grade Web3 primitives (Account Abstraction, Gas Sponsorship, EIP-7702).
Open to: Blockchain Expert · Senior Backend Engineer · Software Architect · Technical Lead roles — Remote / Hybrid (visa sponsorship required)
| Principle | In Practice |
|---|---|
| Reliability first | Idempotency keys, retry/recovery paths, graceful shutdown, health-checked deployments |
| Performance by design | Worker pools, hot-path caching, pprof-driven optimization, sub-second API targets |
| Observable systems | Prometheus, Grafana, OpenTelemetry tracing, structured logging |
| Clean boundaries | DDD module isolation, SOLID microservices, auditable event flows |
|
Core Programming Languages
Cloud Architecture, Edge & Infrastructure
Datastores, Distributed Caching & Graph
Messaging & Distributed Streaming
Observability, API Design & Serialization
|
Distributed Systems Design
Web3 & DLT Ecosystems
Leadership & Operations
|
| 🚀 50,000+ concurrent users | Scaled a nationwide SSO & examination platform on a single server (24 cores / 16 GB RAM) — resolved deadlocks and contention via custom connection pooling and Redis caching. |
| 🌐 10,000+ simultaneous sessions | Led backend architecture for recoverit.app US regulated-market launch — cross-platform (Android, iOS, Web) with sub-second API responses under peak load. |
| ⚡ +35% delivery velocity | Diagnosed memory and serialization bottlenecks with Go pprof at BeStudios; re-engineered multi-DB sync hot paths and migrated static infra to autoscaling GCP — cutting recurring cloud spend. |
vault-guard-7702 — Enterprise EIP-7702 Wallet Proxy & Gateway
Production-grade Solidity implementation that injects institutional multi-sig guards and compliance controls into standard EOAs via EIP-7702 persistent delegation — with a decoupled Gas Sponsorship Paymaster for frictionless non-custodial onboarding.
| Stack | Highlight |
|---|---|
Solidity · EIP-7702 · ERC-4337 Paymaster |
Institutional-grade wallet security without sacrificing UX — compliance controls baked into delegation, not bolted on. |
flashbot — Ethereum / MEV Client
Go library for the Flashbots relay — bundle simulation, private transaction submission, gas estimation, MEV-Share privacy hints, and EIP-191 request signing.
| Stack | Highlight |
|---|---|
Go · EIP-191 · OpenTelemetry · Mainnet & Sepolia |
Built for production MEV workflows with distributed tracing and relay-grade request signing out of the box. |
signal-flow — AMQP Messaging Library
Generic AMQP client with automatic reconnect, retry strategies, flow control, and pluggable codecs — designed for easy mocking in unit tests.
| Stack | Highlight |
|---|---|
Go · AMQP · JSON/Binary codecs |
Go Report A+ · 84%+ test coverage · Powers production trading settlement pipelines. |
goga — Genetic Algorithms Framework
Configurable genetic algorithm framework in pure Go — custom cost functions, parallel evaluation, and tunable selection/mutation/population strategies.
| Stack | Highlight |
|---|---|
Go · Parallel evaluation · Benchmarks |
Go Report A+ · 95% test coverage — concurrency-first design for population evaluation at scale. |
| Role | Company | Focus |
|---|---|---|
| Principal Software & Gateway Architect | Matrix.app | Non-custodial wallet gateway, multi-chain sync, HSM/MPC, EIP-4337/7702 |
| Infrastructure Restructuring Lead | BeStudios | Architecture turnaround, pprof optimization, GCP autoscaling migration |
| Principal Software & Smart Contract Architect | EchoTrade / AxonChain | Go microservices, DDD trade flows, audited Solidity (Diamond Pattern, ERC-4626) |
| Senior Golang Developer & Tech Lead | SixSigmaSports | Real-time ledger, chain-of-trust audit layer, shared Go libraries |
| Principal Cloud Engineer / Backend Lead | KRM-Venture | recoverit.app US launch, 10K+ concurrent sessions, Redis hot-path caching |
M.Sc. Mechanical Engineering — Ferdowsi University of Mashhad (Robotics & Algorithms)
B.Sc. Manufacturing Engineering — Shahid Rajaee Teacher Training University (Data Acquisition)
I'm actively exploring Blockchain Expert, Senior Backend Engineer, Software Architect, and Technical Lead opportunities with teams building serious distributed systems — fintech, Web3 infrastructure, or high-scale cloud backends.
If you're hiring, scaling a platform, or need an architect who still ships production Go — I'd love to hear from you.
💼 linkedin.com/in/hamid-reza-hassani-yaqoti
🐙 github.com/harpy-wings
"Ship systems that survive traffic spikes, audit scrutiny, and 3 AM pages — without trading away developer velocity."