Senior Full Stack React.js / Node.js Developer

Our client seeks a Senior Full Stack React.js / Node.js Developer for a long-term contract on the internal build and tools team. You will contribute core features across multiple web applications that serve internal and external customers, collaborating across business units and ensuring quality through testing and best practices., * Build, test, and deliver full stack features across multiple web applications.

• Develop high-quality React.js front-end components with TypeScript and semantic HTML/CSS/SCSS.
• Implement and maintain Node.js back-end services and APIs.
• Consume and build REST and GraphQL APIs with attention to performance and security.
• Apply accessibility standards and web development best practices.
• Create and maintain unit and automation tests using Jest, React Testing Library or Enzyme, and tools such as Cypress or Selenium.
• Containerize and deploy services using Docker and Kubernetes on AWS.
• Collaborate with onshore and offshore teams and participate in code reviews.

Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance., * 7+ years of professional experience with JavaScript, TypeScript, and React.js.

• Strong AI context and harness engineering experience with AI coding tools such as Claude Code, Codex, and Kiro.
• 3+ years of professional Node.js back-end development.
• Professional experience with TypeScript.
• Experience coordinating with offshore teams, including teams in India.
• 2+ years of experience consuming REST APIs.
• 1+ year of experience with SQL/NoSQL databases such as PostgreSQL, MySQL, or MongoDB.
• Experience with semantic HTML, CSS, and SCSS.
• Experience with accessibility practices.
• React unit testing using Jest and Enzyme or React Testing Library.
• State management using Redux or Apollo.
• Consuming and building REST and/or GraphQL APIs.
• Knowledge of performance, security, and browser APIs.
• Experience with Docker, Kubernetes, and AWS.
• Experience with automation testing using Cypress or Selenium.
• Ability to work on-site in Greenwood Village, CO. Willingness to attend in-person interviews. Ability to observe mandatory time off periods as scheduled by the client.

Education Requirements:

Bachelor’s degree or equivalent education in Computer Science, Information Technology, or related field.

Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.

W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.

If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:

· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.

Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients’ capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.