Senior Software Engineer - React Native - Growth in London

Building the Future of Crypto. Our Krakenites are a world‑class team with crypto conviction, united by the purpose to discover and unlock the potential of crypto and blockchain technology. As a fully remote company, we have Krakenites in 70+ countries who speak over 50 languages. Kraken is committed to industry‑leading security, crypto education, and world‑class client support through products like Kraken Pro, Desktop, Wallet, and Kraken Futures.

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. We attract many of the most talented crypto experts in the world by focusing on mission and ethos.

The Team: The Growth team is dedicated to expanding Kraken's global user base by optimizing every stage of the user journey, from initial impressions to long‑term retention. The Growth Funnel teams focus on creating experiences that captivate and guide new users, ensuring a seamless journey from the start and throughout their entire lifecycle as Kraken customers. Our team collaborates closely with Engineering, Product, Marketing, and Design to increase activation rates.

The Opportunity:

• Design, develop, and maintain high‑quality mobile applications using React Native.
• Design and execute onboarding experiences that captivate new users and streamline their journey.
• Optimize the activation process to ensure users quickly realize the value of our platform.
• Create and refine a first‑time user experience that sets the gold standard in our industry.
• Develop innovative features to incentivise engagement and loyalty.
• Continuously test, learn, and improve strategies based on user behaviour and feedback.
• Set the standard for high‑quality code and lead complex software systems development.
• Significantly influence technical decisions, contribute to technical strategy discussions, and shape product/domain decisions with expert engineering best practices.
• Mentor junior and senior engineers and provide constructive feedback.
• Master multiple technologies and stay ahead of the curve with new tools and trends.
• Design and implement scalable, maintainable, and fault‑tolerant systems, with a deep understanding of complex software development architecture and design patterns.
• Lead and collaborate on complex initiatives, and drive feedback and growth across teams.
• Drive process improvements and lead by example with advanced experience in multiple software development processes.

What You'll Bring:

• A strong understanding of user behaviour, onboarding best practices, and data‑driven decision‑making.
• A creative mindset to design user experiences that stand out and leave a lasting impression.

Skills You Should HODL:

• 6+ years of experience in software development, with a focus on web and mobile applications.
• Deep understanding of JavaScript/TypeScript and proficiency with React Native frameworks.
• Strong experience of API design, security, and performance optimisation.
• Experience with Next.js and WebSockets.
• Experience with frontend testing frameworks.
• Familiarity with modern front‑end build pipelines and tooling.
• Strong understanding of UI/UX best practices and principles.
• Experience within a large technology organisation or fast‑growing startup.
• Hands‑on experience in consumer payments, crypto or fintech mobile applications.
• Strong written and verbal communication skills in English.

Nice to Haves:

• Familiarity with native mobile app development (iOS/Android).
• Knowledge of the cryptocurrency industry and blockchain technology.

Unless a specific application deadline is stated in the job posting, applications are accepted on an ongoing basis. 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, seeking the most suitable candidates. We encourage applicants who do not fully meet all listed requirements to apply if passionate about crypto. As an equal‑opportunity employer, we do not tolerate discrimination or harassment of any kind.