Node.js Developer

Energy Innovation Corp; Thornton (CO); On-site; USD 124,000 - 161,000; Full time

Job summary

Two Sigma in Thornton, CO is seeking a senior Node.js developer to join a fast-moving engineering team. You will work on Node.js backend services, collaborate with React frontend efforts, and participate in architectural decisions.

The role offers mentorship, growth opportunities, and a collaborative, CO-based office environment that values practical solutions and thoughtful tradeoffs.

Qualifications

• Senior Node.js development experience in production systems.
• Strong React API design and integration skills.
• Experience with C# and .NET in real-world projects.

Responsibilities

• Explain Jenkins tradeoffs to tech stakeholders.
• Trace technical metrics into actionable work.
• Design React APIs for internal teams.
• Support C# platform work for CO expansion.
• Turn stakeholder feedback into actionable alerts.
• Translate business requirements into specs.

Skills

Node.js

React

C#

Leadership

Tools

Jenkins

Job description

Between the demo that wows and the system that survives sits the Node.js Developer we're recruiting in Thornton, and Two Sigma pays $124,000 - $161,000 for the difference. At its core, this is a senior Node.js Developer job in CO that rewards 5 years with $124,000 - $161,000 and room to run.

Key Responsibilities

• Walk technology stakeholders through Jenkins tradeoffs in language Two Sigma execs grasp
• Trace a technology number back through Team Leadership services until it finally adds up
• Design React APIs other Thornton, CO teams will still thank you for next year
• Carry the C# platform work that makes Two Sigma's next CO expansion boring
• Turn Two Sigma's Stakeholder Management on-call noise into alerts that actually mean something
• Translate people-centered business requirements into technical specifications and tasks

What You'll Bring

• The integrity to flag your own mistakes first
• Demonstrated calm when a Thornton, CO client changes scope mid-stream
• A steady hand when three priorities all claim to be number one
• Working understanding of both C# and React in real-world settings

For all its autonomy-rich ambition, Two Sigma still operates like the scrappy Thornton startup that first cracked technology years ago. Our team in CO keeps a running list of what we'd do differently, and we actually act on it.

We pay $124,000 - $161,000 for this technology position and back it with mentorship, flexibility, and real growth opportunities.

Live right now in Thornton, CO, and reviewing newcomers daily.