About Control Control is a private custody platform
for digital wealth — built for families and individuals who think
in generations, not market cycles. Multi-chain assets secured,
organized, and accessible for the long term. Websites:
controlsoftware.co | privatecustody.com About the Role Staff
Frontend Engineer to own the production web application end-to-end.
Primary frontend engineer on a small team (CTO Conrad + 1
full-stack + 1 mobile engineer). Urgent backfill — greenfield v2
rebuild from the ground up. Key Responsibilities - Own the React
frontend end-to-end: architecture, feature delivery, performance,
and polish - Translate Figma files into high-quality,
production-ready interfaces; challenge and improve designs - Own
and evolve the design system and shared component library -
Integrate with Dynamic.xyz for multi-chain wallet connectivity
(EVM, Solana, Bitcoin, Cosmos) - Build transaction signing flows,
real-time balances, portfolio dashboards, and asset-management
experiences - Write E2E tests (Playwright) and component tests




(Jest + React Testing Library) - Leverage AI tools as a daily force
multiplier — end-to-end, not just autocomplete Requirements - 10+
years of professional software engineering with frontend ownership
track record - 7+ years building production React applications with
TypeScript - Product-oriented mindset — must have opinions about
what the product should be - Comfortable owning the entire frontend
end-to-end in a small, remote team - AI fluency — actively uses AI
tools end-to-end Bonus Skills - Crypto, Web3, or fintech experience
(strongly preferred) - Deep knowledge of Redux Toolkit, React Query
/ TanStack Query - Experience with Vite, TailwindCSS, and modern
React patterns - Experience with Dynamic.xyz, WalletConnect, or
similar wallet connectivity - Understanding of EIP-712 signing,
transaction lifecycle, multi-chain wallet architecture - Experience
with Playwright for E2E testing

📌 Staff Frontend Engineer (Buenos Aires)
🏢 TechChain Talent
📍 Buenos Aires