Senior Frontend Engineer

As a Senior Frontend Engineer at Startale Group, you'll be a senior contributor to the frontend product experience across your product suite, including self-custodial wallet interfaces, account abstraction user flows, and a growing set of web and mobile decentralized applications. You'll help shape frontend architecture, deliver complex user-facing features, and embed performance, reliability, and usability best practices into every release.

What you'll do

• Contribute to the evolution of frontend system design, patterns, and best practices
• Design, build, and maintain complex, production-grade frontend applications using TypeScript and TanStack Start
• Implement and maintain scalable client-side state using Zustand and TanStack Query to ensure predictable and performant data flows
• Own and deliver end-to-end frontend workstreams including core wallet and account abstraction UX flows, high-throughput data-rich product interfaces, and new web and mobile dApp surfaces
• Contribute to and maintain Playwright-based end-to-end test suites to improve coverage and release confidence
• Partner with Product, Design, and Backend teams to refine requirements and deliver high-quality outcomes

What you bring

• 2 to 4 years of experience as a frontend engineer
• Strong proficiency in TypeScript and modern JavaScript
• Experience with TanStack Start or comparable meta-frameworks such as Next.js or Remix
• Solid expertise in modern React patterns, performance optimization, and frontend application design
• Ability to operate independently in ambiguous, fast-paced environments
• Excellent written and verbal communication skills

Nice to have

• Experience leveraging AI-assisted coding tools such as Cursor, Copilot, or Claude to accelerate development
• Background in web3, blockchain, or decentralized application development
• Experience in startup or scale-up environments

Location: East Asia preferred (Tokyo, Singapore, Hong Kong). The role is available as remote or on-site in Japan or Singapore.