Senior Frontend Engineer - React (Web/Mobile) Open Finance

Kraken; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

Kraken is seeking a world-class Senior Frontend Engineer to join our Consumer team, building web (React) and mobile (React Native) experiences used by millions of traders. You will own features end-to-end from concept to production, collaborating with Product, Design, Data, and Platform teams, and shaping the frontend architecture.

You will work with TypeScript, Next.js App Router, React Server Components, and modern tooling to ships fast, measure outcomes, and iterate based on user behaviour.

Qualifications

• 6+ years of professional software development experience with consumer-facing web/mobile products.
• Deep expertise in TypeScript and the React ecosystem with opinions on architecture and data fetching.
• Production experience with React Native and app release pipelines.
• Experience with Next.js App Router and React Server Components.
• Hands-on experience with A/B testing and experimentation frameworks.
• Experience with WebSockets or Server-Sent Events for real-time UI.
• Strong testing culture with Jest, RTL, Playwright, or Cypress.
• Familiarity with modern build tooling and performance profiling.
• Experience in fintech, crypto, or high-trust consumer products.

Responsibilities

• Design, develop, and maintain high-quality consumer-facing features across web and mobile.
• Own the full lifecycle of product work from discovery to production monitoring.
• Drive A/B testing and experimentation strategies based on data.
• Collaborate with Product, Design, Data, and Mobile engineers for cohesive experiences.
• Make opinionated technical decisions on framework and architecture.
• Set high standards for code quality, accessibility, performance, and testability.
• Mentor engineers and foster a culture of craft and continuous improvement.
• Lead cross-platform initiatives across web and mobile surfaces.
• Stay ahead of React ecosystem tooling and server features; share insights with the team.
• Adopt AI-assisted development workflow with rigorous review processes.

Skills

TypeScript & React ecosystem

React Native

Next.js

A/B testing

WebSockets / SSE

Jest / RTL / Playwright / Cypress

Build tooling (Vite / Webpack)

Fintech / crypto experience

English communication

AI-assisted development workflow

Tools

App Router

React Server Components

LaunchDarkly / Optimizely

CI/CD pipelines

Job description

Kraken is seeking a world-class Senior Frontend Engineer to join our Consumer team, building web (React) and mobile (React Native) experiences used by millions of traders. You will own features end-to-end from concept to production, collaborating with Product, Design, Data, and Platform teams, and shaping the frontend architecture.

You will work with TypeScript, Next.js App Router, React Server Components, and modern tooling to ships fast, measure outcomes, and iterate based on user behaviour.