Senior Frontend Engineer

Startale Group; United States; Remote; USD 100,000 - 140,000; Full time

Job summary

Startale Group is seeking a senior frontend engineer to help shape our frontend architecture across wallet interfaces and dApps. You will design, build, and maintain complex, production-grade frontend applications using TypeScript, React, and TanStack Start, while collaborating with design, product, and backend teams.

You will implement scalable client-side state with Zustand and TanStack Query, Own end-to-end frontend workstreams, and contribute to Playwright-based tests to improve release

Qualifications

• 2–4 years of frontend engineering experience.
• Strong proficiency in TypeScript and modern JavaScript.
• Experience with TanStack Start or comparable meta-frameworks (e.g., Next.js, 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.

Responsibilities

• Contribute to frontend architecture and system design.
• Design, build, and maintain production-grade frontend applications using TypeScript and TanStack Start.
• Implement scalable client-side state using Zustand and TanStack Query.
• Own end-to-end frontend workstreams, including wallet/account-abstraction UX, data-rich interfaces, and new dApp surfaces.
• Contribute to Playwright-based end-to-end tests to improve coverage.
• Collaborate with Product, Design, and Backend teams to refine requirements and deliver high-quality outcomes.

Skills

TypeScript

JavaScript

React

Frontend architecture

Independent work

Tools

TanStack Start

Next.js

Remix

Zustand

TanStack Query

Playwright

Cursor/Copilot/Claude (AI coding assists)

Job description

About the role

You will be a senior contributor to our frontend product experience, working across our product suite, including our self-custodial wallet interfaces, account abstraction user flows, and a growing set of web and mobile decentralized applications (dApps). As a senior frontend engineer on the team, you will help shape frontend architecture, deliver complex user-facing features, and embed performance, reliability, and usability best practices into every release.

You will work closely with designers, product managers, and engineers to take features from concept to production, while contributing to improving code quality, system design, and team workflows.

Key responsibilities

Frontend architecture & technical contributions: Contribute to the evolution of frontend system design, patterns, and best practices.

Application development: Design, build, and maintain complex, production-grade frontend applications using TypeScript and TanStack Start.

State management & data orchestration: Implement and maintain scalable client-side state using Zustand and TanStack Query to ensure predictable and performant data flows.

Project ownership: Own and deliver end-to-end frontend workstreams, including:

• Core wallet and account abstraction UX flows
• High-throughput, data-rich product interfaces
• New web and mobile dApp surfaces

Testing & reliability: Contribute to and maintain Playwright-based end-to-end test suites to improve coverage and release confidence.

Cross-functional collaboration: Partner with Product, Design, and Backend teams to refine requirements and deliver high-quality outcomes.

Qualifications

Required experience

• 2 ~ 4 years of experience as a frontend engineer
• Strong proficiency in TypeScript and modern JavaScript.
• Experience with TanStack Start or comparable meta-frameworks (e.g., Next.js, 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 (Cursor, Copilot, Claude, or similar) to accelerate development.
• Background in web3, blockchain, or decentralized application development.
• Experience in startup or scale-up environments.

Location and logistics

• East Asia preferred (Tokyo, Singapore, HongKong)