Software Engineer III (UI) - Digital Markets Execution Technology (DMET), Execute in London

As a Software Engineer III at JPMorganChase, you serve as a seasoned member of an agile team to design and deliver trusted market-leading technology products in a secure, stable, and scalable way. You are responsible for carrying out critical technology solutions across multiple technical areas within various business functions in support of the firm’s business objectives. In DMET, you will help build and evolve Execute, a real-time, latency-sensitive front‑office trading UI used across global markets. You will deliver complex React and TypeScript web applications in close partnership with product, UX, QA, and back‑end teams across a global organization. Your success will be measured by resiliency, usability, and speed of delivery in a highly operational, business‑critical environment.

Job Responsibilities

• Executes software solutions, design, development, and technical troubleshooting with ability to think beyond routine or conventional approaches to build solutions or breakdown technical problems.
• Creates secure and high‑quality production code and maintains algorithms that run synchronously with appropriate systems.
• Leverages enterprise‑authorized AI coding assist tools within the work environment to improve code quality, delivery speed, and productivity across complex deliverables.
• Applies knowledge of tools within the Software Development Life Cycle toolchain to improve the value realized by automation.
• Produces architecture and design artifacts for complex applications while being accountable for ensuring design constraints are met by software code development.
• Gathers, analyzes, synthesizes, and develops visualizations and reporting from large, diverse data sets in service of continuous improvement of software applications and systems.
• Proactively identifies hidden problems and patterns in data and uses these insights to drive improvements to coding hygiene and system architecture.
• Builds and evolves real‑time React and TypeScript UI features for Execute, supporting complex, high‑throughput trading workflows.
• Contributes to UI architecture and design for latency‑ and availability‑sensitive experiences, balancing performance, security, resiliency, and usability.
• Integrates UI capabilities with APIs and real‑time data services, collaborating with back‑end, platform, and SRE partners to deliver end‑to‑end solutions.
• Applies strong engineering hygiene through peer code reviews, automated testing, and disciplined release practices.
• Diagnoses and resolves production issues using structured troubleshooting, logging, metrics, and alerting; contributes to incident learnings and preventative improvements.
• Improves front‑end performance and reliability through profiling, optimization, and proactive bottleneck identification.
• Collaborates effectively across globally distributed teams, contributing to shared standards and reusable components to increase consistency and delivery speed.

Qualifications

• Formal training or certification on software engineering concepts and 3+ years applied experience.
• Hands‑on practical experience in system design, application development, testing, and operational stability.
• Experience in developing, debugging, and maintaining code in a large corporate environment with one or more modern programming languages and database querying languages.
• Hands‑on experience using enterprise‑authorized AI‑assisted software development tools within the work environment.
• Understanding of responsible AI use in engineering workflows, including data sensitivity considerations, secure handling of inputs/outputs, and adherence to resiliency and security expectations.
• Overall knowledge of the Software Development Life Cycle.
• Solid understanding of agile methodologies such as CI/CD, Application Resiliency, and Security.
• Hands‑on experience building production web applications with React and TypeScript.
• Strong knowledge of modern front‑end engineering fundamentals and tooling, including HTML, CSS, browser performance, build tools, state management, and asynchronous data flows.
• Experience delivering real‑time or data‑intensive user experiences with a focus on responsiveness and stability.
• Experience with performance optimization, automated testing strategies, and comfort working in CI/CD pipelines.
• Ability to write secure, maintainable production code with awareness of web security risks and secure development practices.
• Working knowledge of observability and production support practices, including debugging, incident triage, and operational readiness.
• Strong communication and collaboration skills with experience working in global, cross‑functional teams across product, design, QA, and engineering.

Preferred Qualifications

• Experience in front‑office trading, execution, or markets technology.
• Familiarity with market data concepts, OMS and EMS, and the order and trade lifecycle.
• Familiarity with financial market concepts and protocols.
• Experience with UI component libraries, advanced data grid patterns, and visualization.
• Experience with microservices and event‑driven architectures, including asynchronous workflows and high‑frequency updates.
• Exposure to backend‑for‑frontend patterns and API design collaboration.
• Experience operating UIs in regulated environments with strong auditability and controls.

Why Join Us

At DMET, you will work on a mission‑critical front‑office platform with global reach and direct business impact. You will collaborate with passionate engineers and close‑to‑the‑business partners who value ownership, disciplined delivery, and operational excellence. You will have opportunities to deepen your expertise in modern front‑end engineering, broaden your impact across a high‑performance domain, and see your work drive tangible outcomes in global markets.