Junior Software Engineer jobs in United Kingdom

You’re ready to gain the skills and experience needed to grow within your role and advance your career — and we have the perfect software engineering opportunity for you.

As a Software Engineer II (React TypeScript Developer) at JPMorgan Chase within the Commercial and Investment Banking Emerging Markets Team, you are part of an agile team that works to enhance, design, and deliver the software components of the firm’s state-of-the-art technology products in a secure, stable, and scalable way. As an emerging member of a software engineering team, you execute software solutions through the design, development, and technical troubleshooting of multiple components within a technical product, application, or system, while gaining the skills and experience needed to grow within your role.

• Executes standard software solutions, design, development, and technical troubleshooting
• Writes secure and high-quality code using the syntax of at least one programming language with limited guidance
• Designs, develops, codes, and troubleshoots with consideration of upstream and downstream systems and technical implications
• Applies knowledge of tools within the Software Development Life Cycle toolchain to improve the value realized by automation
• Applies technical troubleshooting to break down solutions and solve technical problems of basic complexity
• Gathers, analyzes, and draws conclusions from large, diverse data sets to identify problems and contribute to decision‑making in service of secure, stable application development
• Learns and applies system processes, methodologies, and skills for the development of secure, stable code and systems
• Adds to team culture of diversity, opportunity, inclusion, and respect

• Formal training or certification on software engineering concepts and applied experience.
• Strong proficiency of React framework including component‑based architecture using a Design System, hooks, performance optimisations and rendering strategies.
• Strong proficiency and understanding of TypeScript including ES6+ syntax.
• Hands on practical experience leveraging CSS including use of preprocessors, libraries, media/container queries to deliver responsive designs.
• Familiarity with frontend build tools (Webpack, Vite, npm).
• Experience using version control with Github/Bitbucket.
• Familiar with using Figma to review Designs and translate specs from Design to Code.
• Experience writing units tests using Jest/Vitest and end to end tests using Cypress/Playwright.
• Exposure to micro‑frontend architectures using Modular Federation or Native Federation.
• Hands‑on practical experience delivering application development, testing, and operational stability
• Experience integrating with RESTful APIs, and handling asynchronous data.
• Proficient in all aspects of the Software Development Life Cycle.

• Familiarity with modern front‑end technologies and techniques like React, TypeScript Microfrontends.
• Proficiency with AI code assistants for rapid prototyping and end delivery of Frontend functionality.
• Experience with deploying Frontend features to cloud providers (e.g. AWS, Google Cloud, Azure)