Lead Software Engineer - React, Typescript and JavaScript. in City of Westminster

Are you a Senior React developer seeking an exciting opportunity to contribute to the development of JP Morgan's Salt Design system? Are you looking to be part of a collaborative team that values Open Source, leads the way in CIB UI strategy, and is actively building a design system while fostering a collaborative community around its products?

The Front-end Development team at Digital Platform has an opening for a Lead Software Engineer role. As a Front‑end developer, you will play a crucial role in the development and delivery of the Salt Design System. We leverage the latest UI technologies to deliver the maximum value to our stakeholders. The Salt Design System is the next generation UI Toolkit for CIB (Commercial & Investment Bank). It provides a comprehensive set of core UI components that can be used by different lines of business to create reusable patterns for their business applications. These components and guidelines are designed to accelerate application design and development, while ensuring consistency and accessibility (WCAG 2.1) through stable design foundations.

Job responsibilities

• Lead the development and maintain high‑quality React components/patterns for the Salt Design System.
• Collaborate with designers to implement UI designs and ensure consistency across our digital products.
• Work closely with product managers, stakeholders and other developers to understand requirements and deliver solutions that meet business needs.
• Write clean, efficient, and maintainable code, following best practices and coding standards.
• Conduct code reviews and provide constructive feedback to ensure code quality and adherence to standards.
• Stay up‑to‑date with the latest trends and technologies in front‑end development, and actively contribute to the improvement of our development processes and tools.
• Adds to team culture of diversity, equity, inclusion, and respect.

Required qualifications, capabilities, and skills

• Led the creation or maintains a multi‑tenant enterprise design system at scale.
• Existing proficiency in React, Typescript and JavaScript.
• Solid understanding of HTML, CSS, and responsive web design.
• Familiarity with modern front‑end development tools and libraries (e.g. esbuild, rollup, vite).
• Knowledge of version control systems (e.g. Git) and collaborative development workflows.
• Excellent problem‑solving and debugging skills.
• Strong communication and collaboration skills, with the ability to work effectively in a team environment.
• Emerging knowledge, opinion and of software applications and technical processes within a technical discipline (e.g. cloud, artificial intelligence, machine learning, mobile, etc.).
• A strong understanding of UI accessibility concerns.
• Knowledge of open source design systems.

Preferred qualifications, capabilities, and skills

• Familiarity with modern front‑end technologies (e.g. NextJS, Remix).
• Existing open source contributor or library maintainer.
• Asynchronous operations in Javascript (maybe using libraries such as Axios, RxJS).
• Familiarity with solving UI state management for components.
• Clean Code advocate.
• Figma plugin development.
• Familiarity with one of JPM's existing design languages (UITK, MDS).

J.P. Morgan is a global leader in financial services, providing strategic advice and products to the world's most prominent corporations, governments, wealthy individuals and institutional investors. Our first‑class business in a first‑class way approach to serving clients drives everything we do. We strive to build trusted, long‑term partnerships to help our clients achieve their business objectives. We recognize that our people are our strength and the diverse talents they bring to our global workforce are directly linked to our success. We are an equal opportunity employer and place a high value on diversity and inclusion at our company. We do not discriminate on the basis of any protected attribute, including race, religion, color, national origin, gender, sexual orientation, gender identity, gender expression, age, marital or veteran status, pregnancy or disability, or any other basis protected under applicable law. We also make reasonable accommodations for applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

J.P. Morgan's Commercial & Investment Bank is a global leader across banking, markets, securities services and payments. Corporations, governments and institutions throughout the world entrust us with their business in more than 100 countries. The Commercial & Investment Bank provides strategic advice, raises capital, manages risk and extends liquidity in markets around the world.