Software Engineer III – React / TypeScript, Gen AI, Frontend

Company: JPMorgan Chase & Co.
Apply for the Software Engineer III – React / TypeScript, Gen AI, Frontend
Location: London
Job Description:

We have an exciting and rewarding opportunity for you to take your software engineering career to the next level.

As a Software Engineer III in the Securities Services team within the Commercial & Investment Bank, you will design and deliver secure, scalable technology products that drive business success. You will build and evolve a shared frontend platform and reusable UI patterns, focusing on performance, accessibility, and developer experience. You will help deliver AI-enabled user experiences and accelerate engineering velocity by responsibly using modern AI developer tools. Your work will directly impact our customers and the way we build technology.

This is a pure frontend position with a strong AI focus: you will help deliver AI-enabled user experiences and raise engineering velocity by using modern AI developer tools responsibly (e.g., AI-assisted coding, debugging, and test generation), while maintaining a high bar for correctness, security, and quality.

Job Responsibilities

  • Design, develop, and troubleshoot creative software solutions for technical challenges.
  • Write secure, high-quality production code and maintain UI logic that integrates with shared platforms.
  • Develop and maintain reusable React components and UI patterns for complex workflows.
  • Build high-performance, data-intensive user interfaces using profiling and optimization techniques.
  • Engineer accessible, inclusive experiences by partnering with UX and design teams.
  • Write and maintain automated tests (unit, integration, end-to-end) to ensure reliability and quality.
  • Collaborate with UX designers, product stakeholders, and developers to build custom UI components.
  • Develop tools and automated processes to streamline development and enhance developer experience.
  • Build Generative AI interface solutions using React and TypeScript, following CI/CD standards.
  • Work closely with Product, UX, and cross-functional partners to deliver capabilities in agile sprints.
  • Actively use AI development tools for code generation, refactoring, debugging, documentation, and testing.

Required Qualifications, Capabilities, and Skills

  • Formal training or certification in software engineering.
  • Expertise in HTML, CSS, JavaScript, React, TypeScript, and state management.
  • Experience optimizing and debugging performance and memory issues in web applications.
  • Strong communication and collaboration skills with cross-functional teams.
  • Familiarity with agile methodologies, production readiness, and security-aware development.
  • Experience maintaining production UI code in large development teams.
  • Understanding of user experience principles and customer-oriented development.
  • Testing experience with component/unit and end-to-end tools (e.g., React Testing Library, Cypress, Playwright).
  • Experience building or integrating Generative AI features in frontend products.
  • Proficiency with CLI, Git, and CI/CD practices.
  • Regular use of AI coding tools with strong validation and code quality practices.

Preferred Qualifications, Capabilities, and Skills

  • Exposure to cloud technologies and modern web delivery.
  • Experience with shared UI platforms or component libraries.
  • Strong accessibility engineering, including WCAG compliance and remediation.
  • Experience improving developer experience at scale.
  • Understanding of software best practices, development lifecycle, and Agile tools.

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Posted: May 8th, 2026