Software Engineer III - Node.js and TypeScript

JPMorgan Chase & Co. • Columbus, OH

4d

About The Position

As a Software Engineer III at JPMorganChase in Chase Digital, you will join the Web Channel Frameworks group. The team builds the developer platform used by Chase web engineers, including command-line tools, project generators, shared build, lint, and test configurations, codemods for framework migrations, and AI agent tooling that supports safe adoption of new technology. The work helps engineering teams deliver desktop and mobile experiences for Chase customers more efficiently.

You will design and maintain Node.js and TypeScript tools, libraries, configurations, and npm packages; build and validate codemods; support internal engineering customers; and help improve team tools and processes. You will ensure quality through testing and adhere to architecture, risk management, and security standards, while collaborating with a lead and product partners in an Agile team.

Requirements

• Formal training or certification in software engineering concepts and at least 3 years of applied experience.
• Strong experience with TypeScript, JavaScript, and Node.js.
• Experience with React and single-page application development.
• Experience configuring build, lint, and test tools, such as webpack or Vite, ESLint, Vitest, and Playwright.
• Hands-on experience using enterprise-authorized AI-assisted development tools, with the ability to critically evaluate, validate, and refine their output for correctness, performance, and security.
• Understanding of responsible AI use in engineering workflows, including data sensitivity, secure handling of inputs and outputs, and security expectations.
• Strong problem-solving skills and clear written and verbal communication.
• Experience with continuous integration and continuous delivery.

Nice To Haves

• Experience building command-line tools or developer tooling.
• Experience with abstract syntax trees (ASTs) or codemod tools, such as jscodeshift or Babel.
• Experience publishing and maintaining npm packages, or with pnpm monorepos.
• Experience writing technical documentation or supporting internal developers.
• Familiarity with web performance optimization.
• Familiarity with containers and cloud platforms, such as Docker, Kubernetes, or AWS.

Responsibilities

• Design, build, and test Node.js and TypeScript tools, libraries, and configurations used by engineering teams.
• Write codemods to automate framework and dependency upgrades and validate them on real applications.
• Publish and maintain npm packages in a monorepo, including semantic versioning, changelogs, and migration guides.
• Use enterprise-authorized AI coding assistance tools to improve code quality, delivery speed, and productivity; validate their output through peer review, automated testing, and secure coding standards, and share reusable patterns with the team.
• Support engineers who use the tools through a Teams channel, office hours, and clear documentation.
• Identify improvements to tools and processes and drive them from concept to implementation with the team lead.
• Ensure quality through unit, integration, and end-to-end testing, following architecture standards, risk management, and security policies.
• Work in an Agile team with the lead and product partners to scope and size work.

Benefits

• Competitive total rewards package, including base salary determined by role, experience, skill set, and location.
• Eligible roles may receive commission-based pay and/or discretionary incentive compensation, paid as cash and/or forfeitable equity.
• Comprehensive health care coverage.
• On-site health and wellness centers.
• Retirement savings plan.
• Backup childcare.
• Tuition reimbursement.
• Mental health support.
• Financial coaching.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed