Software Engineer III - React

Salary: £43,500 - 71,500 per year

Requirements:

• Formal training or certification on JavaScript concepts and proficient applied experience
• Ability to write testable, clean JavaScript code
• Proficiency in React framework
• Familiarity with writing unit tests
• Understanding of REST APIs and GraphQL
• Ability to work in a dynamic, agile environment within a geographically distributed team
• Ability to focus on promptly addressing customer needs
• Excellent written and verbal communication skills in English
• Hands-on experience using enterprise-authorized AI-assisted software development tools within the work environment, with demonstrated ability to critically evaluate, validate, and refine AI-generated outputs for correctness, performance, and security
• Understanding of responsible AI use in engineering workflows, including data sensitivity considerations, secure handling of inputs/outputs, and adherence to resiliency and security expectations
• Ability to guide peers on safe and effective usage within team practices
• Building applications using React Native in TypeScript or JavaScript
• Native application development across Android / iOS in Kotlin / Swift
• Comfortable working with projects partially or fully using TypeScript
• Using latest React features such as Suspense and Hooks
• End to end testing applications with Detox / Appium / WebdriverIO / Playwright
• Extensive experience in modern web development, including responsive design and performance optimization
• Hands-on experience with design systems, component libraries, and implementing consistent UI/UX across large-scale applications

Responsibilities:

• Collaborate with cross-functional teams to define, design, and ship new features
• Create and maintain clean, efficient, and reusable codebase
• Conduct thorough testing to ensure robustness and reliability of applications
• Troubleshoot and debug issues, ensuring smooth application functionality
• Communicate effectively with stakeholders to gather requirements and provide progress updates
• Mentor junior developers, providing guidance on best practices and code reviews
• Stay updated with the latest industry trends and best practices in mobile development
• Drive continuous improvement initiatives to enhance development processes and workflows
• Leverage enterprise-authorized AI coding assist tools within the work environment to improve code quality, delivery speed, and productivity across complex deliverables, while validating outputs through peer review, automated testing, and secure coding standards
• Contribute learnings and reusable patterns to improve broader team effectiveness
• Apply knowledge of tools within the Software Development Life Cycle toolchain, including enterprise-authorized AI-assisted development and automation capabilities, to improve the value realized by automation

Technologies:

• AI
• Appium
• Android
• GraphQL
• Support
• JavaScript
• Kotlin
• Mobile
• Network
• Playwright
• REST
• React
• React Native
• Security
• Swift
• TypeScript
• Web
• iOS
• UX UI Design
• Cloud
• microservices

More:

We launched our digital bank, Chase UK, to revolutionise mobile banking with seamless journeys that our customers love. We are building the bank of the future from scratch with a start-up mentality, giving you the opportunity to make a real impact. As a Front-End Engineer at JPMorgan Chase within the International Consumer Bank, you will be part of a flat-structure organization and our Front-End Engineering team at the heart of this venture. We work in tribes and squads focused on specific products and projects, and depending on your strengths and interests, you will have the opportunity to move between them. J.P. Morgan is a global leader in financial services, and our Corporate Technology team relies on smart, driven people to develop applications and provide tech support across our network. We value diversity and inclusion, offer reasonable accommodations where needed, and seek to build trusted, long-term partnerships with our clients.

last updated 34 week of 2026