Senior Software Engineer

RELX

Senior Software Engineer developing scalable web applications using React and Node.js for global information analytics company Elsevier. Join a collaborative Agile team focusing on code quality and best practices.

Posted 5/28/2026full-timeColorado, Pennsylvania • 🇺🇸 United StatesSenior💰 $86,600 - $144,400 per yearWebsite

Tech Stack

Tools & technologies

JavaScriptJenkinsJestMochaNode.jsReactTypeScript

About the role

Key responsibilities & impact

Design, develop, test, and maintain scalable web applications using React on the frontend and Node.js/Express.js on the backend.
Translate product requirements into well-architected, maintainable code and robust APIs.
Implement linting, automated tests (unit/integration), and ensure code quality through reviews and best practices.
Collaborate in an Agile/Scrum environment: participate in standups, sprints planning, backlog grooming, and demos.
Contribute to CI/CD pipelines and release processes; work with Jenkins to build, test, and deploy features.
Write and maintain comprehensive documentation, including code comments, README updates, and API specs.
Troubleshoot production issues, perform root-cause analysis, and implement long-term fixes.
Mentor junior engineers and share knowledge to uplift the team’s skills and coding standards.
Collaborate with QA to define and implement test strategies and acceptance criteria.

Requirements

What you’ll need

3+ years of professional software development experience in full-stack JavaScript.
Proficiency with React (hooks, state management, component design) and modern JavaScript/TypeScript.
Solid experience with Node.js and Express.js for API development.
Demonstrated experience building and consuming RESTful APIs.
Proficiency with GitHub workflows, pull requests, issue tracking, and collaboration in a distributed or co-located team.
Experience with linting (ESLint) and automated testing (unit tests; familiarity with Jest, Mocha, or similar).
Working knowledge of Agile/Scrum methodologies and collaboration in cross-functional teams.

Benefits

Comp & perks

This job is eligible for an annual incentive bonus.
We are delighted to offer country specific benefits.

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

ReactNode.jsExpress.jsJavaScriptTypeScriptRESTful APIslintingautomated testingunit testsCI/CD

Soft Skills

collaborationmentoringtroubleshootingcommunicationproblem-solvingteamworkcode reviewsknowledge sharingAgile methodologiesScrum