Software Engineer II - Frontend - Pro

Building the Future of Crypto Our Krakenites are a world-class team with crypto conviction, united by our desire to discover and unlock the potential of crypto and blockchain technology. What makes us different? Kraken is a mission-focused company rooted in crypto values. As a Krakenite, you’ll join us on our mission to accelerate the global adoption of crypto, so that everyone can achieve financial freedom and inclusion. For over a decade, Kraken’s focus on our mission and crypto ethos has attracted many of the most talented crypto experts in the world. Before you apply, please read the Kraken Culture page to learn more about our internal culture, values, and mission. We also expect candidates to familiarize themselves with the Kraken app. Learn how to create a Kraken account here . As a fully remote company, we have Krakenites in 70+ countries who speak over 50 languages. Krakenites are industry pioneers who develop premium crypto products for experienced traders, institutions, and newcomers to the space. Kraken is committed to industry-leading security , crypto education , and world-class client support through our products like Kraken Pro , Desktop , Wallet , and Kraken Futures . Become a Krakenite and build the future of crypto! Proof of work The team The Pro team owns Kraken's flagship trading web application - a high-performance, real-time React app that serves multiple product surfaces from a single web codebase: Spot trading, Margin, Futures, Equities, Earn, and many more. The application receives a heavy stream of live updates (order books, tickers, balances, positions, fills) and must remain responsive and stable under sustained load. The team is globally distributed, codes in TypeScript and React, and is responsible for shipping features, defending performance, stability, and keeping the production application observable through Sentry, Mixpanel and structured logging. The opportunity Leverage LLM's to accelerate development while still producing production-ready code. Leverage LLM's to build agentic flows to automate tasks and improve productivity. Design, develop and maintain features in a large, multi-product React web application used by professional traders globally. Own performance end to end: profile, measure and optimise real-time UI updates (tables, order books, charts, order forms) so the app stays responsive under heavy WebSocket throughput. Build and evolve the WebSocket and Web Worker layer that powers live market data, balances, positions and order updates across the app. Set the standard for high-quality code through reviews, mentorship and constructive feedback to engineers across the team. Contribute to technical strategy: architecture, data flow, state management, component design and shared libraries used across the trading surfaces. Safeguard performance improvements with regression-resistant patterns, instrumentation, dashboards and alerts, so wins do not silently erode over time. Own observability for the features you ship: meaningful Sentry instrumentation, Mixpanel events, structured logs and actionable alerts. Write integration and component tests. Drive process improvements (engineering practices, tooling, build pipeline, AI-assisted workflows) and lead by example. Skills you should HODL 4+ years of experience in software development, with a focus on production web applications. Deep understanding of JavaScript/TypeScript and strong proficiency with the modern React ecosystem. Experience building real-time UIs with WebSockets and Web Workers. Strong React and JavaScript performance skills. Experience working with LLM coding tools (Cursor, Claude, Copilot or similar) to accelerate development while still producing production-ready code. Hands-on experience with React Query or similar. Practical experience with production user monitoring and observability. Experience with frontend testing at multiple levels. Comfortable with feature flagging and progressive rollouts. Familiarity with modern frontend build pipelines and tooling (rsbuild/webpack/SWC, monorepos, TypeScript project references, ESLint, Prettier, Husky). Strong understanding of UI/UX best practices and design-system driven development. Experience within a large technology organization or fast-growing startup. Strong written and verbal communication skills in English. Unless a specific application deadline is stated in the job posting, applications are accepted on an ongoing basis. Please note, applicants are permitted to redact or remove information on their resume that identifies age, date of birth, or dates of attendance at or graduation from an educational institution. We consider qualified applicants with criminal histories for employment on our team, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance. Kraken is powered by people from around the world and we celebrate all Krakenites for their diverse talents, backgrounds, contributions and unique perspectives. We hire strictly based on merit, meaning we seek out the candidates with the right abilities, knowledge, and skills considered the most suitable for the job. We encourage you to apply for roles where you don't fully meet the listed requirements, especially if you're passionate or knowledgable about crypto! We may ask candidates to complete job-related skills or work-style assessments as part of our hiring process. These assessments are designed to evaluate competencies relevant to the role and are applied consistently across candidates for similar positions. Assessment results are considered alongside other relevant information, such as experience and interviews, and are not the sole basis for any employment decision. As an equal opportunity employer, we don’t tolerate discrimination or harassment of any kind. Whether that’s based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status or any other protected characteristic as outlined by federal, state or local laws. Stay in the know Follow us on Twitter Learn on the Kraken Blog Connect on LinkedIn Candidate Privacy Notice