Full-Stack Software Engineer III

J.P. MORGAN; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

J.P. Morgan in London seeks an experienced Software Engineer III within the Infrastructure Platforms, Data Center Services team.

You will design, develop, and deliver full-stack solutions using React on the frontend and Node.js/TypeScript, Python on the backend, driving secure, scalable software aligned with business goals. You will mentor juniors, contribute to architecture artifacts, and apply AI-assisted development tools within a secure SDLC, while collaborating across agile teams to ensure

Qualifications

• Formal training or certification on software engineering concepts and proficient applied experience.
• Hands-on practical experience in system design, application development, testing, and operational stability.
• Proficiency in modern programming languages, with strong experience in JavaScript/TypeScript (React, Node.js) required.
• Experience developing, debugging, and maintaining code in a large-scale environment using modern programming and database querying languages.
• Solid understanding of agile methodologies, including continuous integration/continuous delivery, application resiliency, and security practices.
• Demonstrated knowledge of software applications and technical processes within a technical discipline (e.g., cloud, AI/ML, or mobile).
• Working knowledge of the Software Development Life Cycle.
• Hands-on experience using enterprise-authorized AI-assisted software development tools with ability to evaluate AI outputs.

Responsibilities

• Apply advanced technical skills to design, develop, and deliver full-stack solutions across frontend (React) and backend (Node.js/TypeScript, Python) services.
• Create secure, high-quality production code and maintain algorithms that run reliably and synchronously with appropriate systems.
• Produce architecture and design artifacts for complex application components, ensuring design constraints are met in implementation.
• Gather, analyze, synthesize, and develop visualizations from large data sets in support of continuous improvement of software applications.
• Proactively identify hidden problems and patterns in data, and use insights to drive improvements to coding hygiene and system architecture.
• Develop subject matter expertise in a specific technical domain relevant to Data Center Services (e.g., UI/UX, backend architecture, SDLC tooling, testing strategy, or operational support).
• Contribute to software engineering communities of practice and employee resource groups through facilitation, guest speaking, or content contribution.
• Mentor junior software engineers and actively support their technical growth and development.
• Leverages enterprise-authorized AI coding assist tools within the work environment to improve code quality, delivery speed, and productivity, with peer review and secure coding standards.

Skills

JavaScript/TypeScript (React, Node.js)

React

Node.js

Python

Agile methodologies

CI/CD

AI-assisted development tools

Tools

AI coding assistants

Job description

Job Description

Join a team that is redefining how enterprise infrastructure technology is built, delivered, and scaled. At JPMorganChase, we invest in our engineers — giving you access to cutting-edge tools, meaningful mentorship, and the opportunity to grow your career across one of the world's most complex and innovative technology organizations. Here, your work doesn't just support a product — it powers the infrastructure that keeps global markets moving.

As a Software Engineer III at JPMorganChase within the Infrastructure Platforms, Data Center Services team, you serve as a seasoned member of an agile team that works to enhance, build, 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 this role, you will bring both technical depth and collaborative energy to a team that values quality, innovation, and continuous improvement.

Job Responsibilities

• Apply advanced technical skills to design, develop, and deliver full-stack solutions across frontend (React) and backend (Node.js/TypeScript, Python) services
• Create secure, high-quality production code and maintain algorithms that run reliably and synchronously with appropriate systems
• Produce architecture and design artifacts for complex application components, ensuring design constraints are met in implementation
• Gather, analyze, synthesize, and develop visualizations from large data sets in support of continuous improvement of software applications
• Proactively identify hidden problems and patterns in data, and use these insights to drive improvements to coding hygiene and system architecture
• Develop subject matter expertise in a specific technical domain relevant to Data Center Services (e.g., UI/UX, backend architecture, software development lifecycle tooling, testing strategy, or operational support)
• Contribute to software engineering communities of practice and employee resource groups through facilitation, guest speaking, or content contribution
• Mentor junior software engineers and actively support their technical growth and development
• Leverages enterprise-authorized AI coding assist tools within the work environment to improve code quality, delivery speed, and productivity (e.g., code generation/refactoring, unit test creation, documentation), while validating outputs through peer review, automated testing, and secure coding standards
• Applies knowledge of tools within the Software Development Life Cycle toolchain, including enterprise-authorized AI-assisted development and automation capabilities, to improve the value realized by automation

Required qualifications, capabilities, and skills

• Formal training or certification on software engineering concepts and proficient applied experience
• Hands-on practical experience in system design, application development, testing, and operational stability
• Proficiency in modern programming languages, with strong experience in JavaScript/TypeScript (React, Node.js) required
• Experience developing, debugging, and maintaining code in a large-scale environment using modern programming and database querying languages
• Solid understanding of agile methodologies, including continuous integration/continuous delivery, application resiliency, and security practices
• Demonstrated knowledge of software applications and technical processes within a technical discipline (e.g., cloud, artificial intelligence/machine learning, or mobile)
• Working knowledge of the Software Development Life Cycle
• Hands-on experience using enterprise-authorized AI-assisted software development tools within the work environment (e.g., for coding, testing, troubleshooting, or documentation) with demonstrated ability to critically evaluate and validate AI-generated outputs
• Understanding of responsible AI use in engineering workflows, including data sensitivity considerations, secure handling of inputs/outputs, and adherence to resiliency and security expectations

Preferred qualifications, capabilities, and skills

• Familiarity with Python for backend services or tooling
• Exposure to cloud technologies and infrastructure-as-code practices
• Experience with artificial intelligence or machine learning concepts and tooling relevant to infrastructure and operations use cases

About Us

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. Visit our FAQs for more information about requesting an accommodation.

About The Team

Our professionals in our Corporate Functions cover a diverse range of areas from finance and risk to human resources and marketing. Our corporate teams are an essential part of our company, ensuring that we're setting our businesses, clients, customers and employees up for success.