Frontend Software Engineer , UI Foundations - Confluent

IBM; Hursley; On-site; GBP 60,000 - 90,000; Full time

Job summary

IBM is seeking a Frontend Software Engineer to join the UI Foundations team. You will build core UI infrastructure using TypeScript and React, contribute to the Design System, and optimize UI performance.

You will connect client-side apps to REST and GraphQL APIs, write unit tests with Jest, and develop E2E tests with Playwright. You will participate in CI/CD, feature flags, and automated testing environments, applying modern frontend tooling like Webpack/Rspack and Babel.

Qualifications

• Professional software development experience building web apps.
• Strong foundation in JavaScript/TypeScript, HTML5, CSS.
• Hands-on React experience (or similar) and Jest.
• Playwright for end-to-end testing.
• Familiarity with modern frontend build tools (Webpack, Rspack, Babel).
• Experience connecting to REST and GraphQL APIs.

Responsibilities

• Build and maintain core UI infrastructure with TypeScript and React.
• Contribute to Design System and tooling to boost frontend efficiency.
• Monitor and optimize UI performance; participate in frontend decisions.

Skills

TypeScript

React

Frontend architecture

Jest

Playwright

CI/CD

REST APIs

GraphQL

Webpack

Rspack

Babel

NPM/Yarn

Terraform IaC

Tools

Webpack

Rspack

Babel

NPM

Yarn

Job description

We are looking for a Frontend Software Engineer to join our UI Foundations team. The UI Foundations team empowers engineers across Confluent with the processes, tools, technologies, and guidance necessary to deliver a consistent and exceptional user experience. In this role, you will help build the core building blocks and infrastructure that directly power and improve Confluent Cloud.

What You Will Do

• Build & Maintain Core UI Infrastructure: Work with our modern stack based on TypeScript and React.
• Design Systems & Productivity: Contribute to our Design System and engineer tooling to boost overall frontend developer efficiency.
• Performance & Architecture: Monitor and optimize UI performance while participating in frontend architectural decisions.
• API Integration: Connect client-side applications to multiple REST and GraphQL APIs.
• Testing & Quality Assurance: Write unit tests using Jest. Maintain and write end-to-end (E2E) test suites using Playwright to ensure high-quality, resilient releases.
• Modern CI/CD: Participate in daily production deployments, using feature flags and commit-level testing environments to ship code safely. Utilize automation tools and bots to maintain dynamic dependencies.
• Experience: Professional software development experience building web applications.
• Core Web Tech: Strong foundation in modern JavaScript/TypeScript, HTML5, CSS, algorithms, and application design.
• Frameworks & Testing: Hands-on experience with React (or equivalent modern frameworks), unit testing (Jest), and E2E testing frameworks like Playwright.
• Tooling & Ecosystem: Familiarity with modern frontend build tools (Webpack, Rspack, Babel, NPM/Yarn).
• Data-Intensive Apps: Experience building responsive client-side web applications tailored for complex data environments.
• Deployment & Systems: Familiarity with continuous integration, deployment workflows, and managing web application builds.
• Preferred technical and professional experience Hands-on experience or familiarity with Terraform for Infrastructure as Code (IaC).

At IBM Software, we transform client challenges into solutions. Building the world's leading AI-powered, cloud-native products that shape the future of business and society. Our legacy of innovation creates endless opportunities for IBMers to learn, grow, and make an impact on a global scale. Working in Software means joining a team fueled by curiosity and collaboration. You'll work with diverse technologies, partners, and industries to design, develop, and deliver solutions that power digital transformation. With a culture that values innovation, growth, and continuous learning, IBM Software places you at the heart of IBM's product and technology landscape. Here, you'll have the tools and opportunities to advance your career while creating software that changes the world.