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omid MIRZAEI

@omidmirzaei

Senior Full-Stack Engineer — Flutter, TypeScript, Go. Crypto wallets, fintech, AI-assisted delivery. Athens, EU · remote only.

Greece

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What I'm looking for

I want to build mobile-first crypto and fintech products — Flutter/Dart in production, TypeScript/NestJS on APIs, webhooks, and third-party integrations (Fireblocks, WalletConnect, payments). I work AI-assisted (Claude, Cursor) with real testing and security review, not vibe-coding. Remote only from Athens, Greece. EU work rights, no sponsorship.

I'm a Senior Full-Stack Engineer with 7+ years shipping production software across mobile, backend, fintech, Web3, and AI-assisted engineering.

Flutter is my deepest production stack — wallets, auth, payments, platform channels, release automation. At Block Labs I shipped Best Wallet, a multi-chain non-custodial crypto wallet (100K+ active users), across authentication, send/receive, swaps, staking, presales, Wirex card flows, and 10+ third-party integrations including Fireblocks MPC, WalletConnect/Reown, Firebase, and Sentry. I also worked on the NestJS/TypeScript backend: payment APIs, Fireblocks webhook ingress, and Wirex REST+SSE — not Go in that codebase.

Before that, four years at CoDeTech on CorePass (KYC/digital identity), XCB HODLER (Core Coin wallet), Heyo (E2E P2P messaging), and Ping Exchange (React/Next.js/TypeScript web).

Backend and OSS: Go on EngagePulse (Kafka, PostgreSQL, outbox) and Guardrail Agent (policy engine, HITL, EVM+Solana). TypeScript/React/Next.js on web surfaces and open-source demos. I'm comfortable with REST, SSE, webhooks, async partner callbacks, PostgreSQL, MongoDB, Redis, AWS, Docker, and CI/CD.

I use LLMs daily (Claude, Gemini, Cursor) for architecture, tests, debugging, and docs — with human review on security-sensitive paths.

Open to Senior Full-Stack, Senior Flutter/Mobile, Backend (Go/TypeScript), and applied-AI roles — remote only from Athens, Greece. Greek citizen, EU work rights, no sponsorship.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

BlockLabs

Dec 2024 - Present (1 year 8 months)

Worked as a Senior Software Engineer at BlockLabs, contributing to a non-custodial multi-chain crypto wallet and related payment and wallet infrastructure. Built and maintained Flutter wallet features and production integrations (e.g., Wirex, WalletConnect, Firebase/Sentry/Segment) and contributed backend services and Fireblocks webhook/payment flows.

Flutter Dart APIs Webhooks Staking Firebase Sentry Segment Customer.io Intercom Fireblocks Go Unit Testing Widget Testing Debugging Architecture and Planning

Senior Flutter Developer

CoDeTech

Mar 2021 - Dec 2024 (3 years 9 months)

Built blockchain-based mobile applications at CoDeTech, including a decentralized digital identity platform with KYC verification and a Core blockchain wallet app. Also worked on a decentralized messaging application using WebRTC/Wi-Fi Direct concepts, and contributed unit-test suites to improve release quality.

Flutter Dart Unit Testing Widget Testing Web3 Digital Identity KYC PayTo Protocol Core WebRTC Regression Testing

Senior Flutter Developer

SRIco

Aug 2020 - Mar 2021 (7 months)

Led Flutter delivery for Rochi (mobile e-commerce), implementing real-time order tracking, notifications, and in-app payments. Improved transaction completion by 15%.

Flutter Dart Real Time Tracking Notifications

Senior Front-end Developer

Ratanet - Kian Tejarat Sharif

Feb 2018 - Nov 2020 (2 years 9 months)

Worked as a Senior Front-end Developer for online enterprise banking and financial web applications.

Flutter Developer

Pardakht Novin Arian

Dec 2019 - May 2020 (5 months)

Implemented mobile banking and payment workflows for an online banking application using Flutter, BLoC, and APIs in collaboration with backend and QA teams.

Flutter Dart BLoC APIs Mobile Banking