Senior Software Engineer - React Native - Consumer

Kraken
London, UK
18 days ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Compensation
Ā£70,663.0
Working hours
Regular working hours
Languages
Chinese

Tech stack

Application Programming Interfaces (APIs) Artificial Intelligence Code Review Cursor Mobile Application Software Microsoft Copilot Data Streaming Kotlin Real Time Data React Native Claude

Job description

The Consumer Mobile team builds the Kraken app, the interface millions of people use to interact with their money. We work primarily in React Native to make complex financial experiences intuitive, fast, and trustworthy. Our product-minded engineers work closely with Product and Design to understand client problems, challenge assumptions, shape solutions, and measure whether what we ship improves the experience.

We are expanding into Asia and building a new app specifically for Asian users. This requires genuine experience with the region’s distinct user expectations, design language, and technical constraints compared with Western markets.

  • Build and own high-quality React Native features end to end, from ambiguous client problems and solution design through implementation, launch, measurement, and iteration
  • Partner closely with Product and Design to shape thoughtful, responsive, and trustworthy financial experiences, including product discovery, trading, and simplified client journeys
  • Work with APIs and dynamic or real-time data, making strong decisions on state management, rendering, performance, architecture, and reliability
  • Raise the product-engineering bar through technical discussions, code reviews, collaboration, strong product ownership, and a willingness to move between product and technical challenges
  • Help build Kraken’s new app for Asian markets. Act as the team’s subject-matter guide on regional UX and design expectations, practical approaches to firewall and connectivity restrictions, and appropriate vendors and tooling such as telemetry solutions

Requirements

  • Strong React Native experience, including shipping meaningful production applications and making sound architectural and implementation decisions in a modern mobile codebase
  • A product-building mindset and strong product judgment. You start with the client problem, challenge or simplify requirements when needed, and turn loosely defined problems into measurable product outcomes
  • End-to-end feature ownership, with the ability to use metrics, experimentation, client behavior, and feedback to assess and improve what you ship
  • Experience building responsive, data-rich applications using APIs and dynamic or real-time data, alongside close collaboration with Product and Design in written and verbal English
  • Versatility and thoughtful AI use. You are comfortable wearing multiple hats and use tools such as Cursor, Copilot, or Claude to work faster while retaining responsibility for engineering judgment and quality
  • Proven experience building and shipping consumer mobile apps for Asian markets. You understand the region’s UX and design conventions, its technical limitations, and how to navigate launch challenges including firewall and connectivity restrictions. You can clearly explain how you have solved these problems before

  • Experience in fintech, trading, crypto, payments, or another financial technology environment, with an understanding of trading, investing, or financial products
  • Experience with real-time or streaming data, and improving mobile application performance, responsiveness, and reliability across a range of devices
  • Experience across both mobile and web, or in a startup or small-to-medium-sized technology company where engineers work closely with Product and Design
  • Native mobile experience in Swift or Kotlin, including sound judgment about when to work below the React Native layer
  • Chinese language proficiency, such as Mandarin, or another Asian language

About the company

Payward - the parent company behind Kraken, NinjaTrader, Breakout, xStocks, Payward Services and CF Benchmarks - has spent the last 15 years building one of the most modern and globally accessible financial infrastructure platforms in the industry, built to advance an open, global financial system., Founded in 2011, Kraken is one of the world’s longest-standing crypto platforms, trusted by over 10 million individuals and institutions globally. We offer spot trading, margin, futures, staking, and OTC services for both individual investors and institutional clients.

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