Staff Frontend Engineer (React)

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