Yaroslav T.

I turn a business problem into working, production software – fast. I work like a forward-deployed engineer: I sit with your team, understand the process, write the spec, then design, build, test and deploy the solution myself, using Claude, Claude Code, and spec-driven development. Who I am 13+ years in software engineering, 9+ in blockchain and fintech, and currently CTO of a 50+ person engineering company (4IRE). That means you get senior architecture and product judgment, plus someone who actually ships the code. Recent work • 4IRE tracker (tracker.4ire.dev) – our company's internal time tracking, approvals, resource allocation, HR and finance system. I ran discovery with finance and HR, wrote the specs, and built and deployed it end to end with Claude. It replaced spreadsheets and chat messages and is live in production. • My Neobank – crypto and multi-currency neobank (IBANs, cards, SEPA/SWIFT/stablecoin settlement, MiCA-aligned KYC/AML). • BRIX / Centra Sul – gold tokenisation platform on Arbitrum One. • together.fun – provably fair game on Solana. • 50+ smart-contract security audits securing $5M+ in client assets. What I can build for you • AI-powered internal tools: dashboards, approval workflows, HR/finance/ops systems, back-office apps • Full-stack web apps and APIs (TypeScript, Node.js/Nest.js, Python/Django, SQL) • Integrations with Google Workspace, ClickUp and other third-party APIs • MVPs and prototypes you can put in front of users within days • Fintech and Web3 products: smart contracts, tokenisation, audits How I work 1. Discovery call – I learn your process and what success looks like. 2. Written spec – scope, user roles and acceptance criteria you approve before I build. 3. Build in short iterations, with a working demo you can click every few days. 4. Tests, deployment and a user guide, so your team can actually use it. You get one accountable person covering business analysis, design, development, QA and deployment – no hand-offs and nothing lost in translation. Send me a short description of your problem and I'll reply with how I'd approach it and a rough estimate.