Senior Electrical Engineer

Location: Onsite - Houston, TX

Team: Engineering Reports to VP of Engineering

Helix Earth is a mission-driven climate tech startup redesigning how we cool and dehumidify buildings. Born from innovations originally developed for NASA, our patented retrofit system delivers superior dehumidification, energy savings, and healthier ventilation - without replacing existing HVAC infrastructure. We're moving fast to bring our solution from lab to field and are looking for a sharp, hands-on electrical engineer to help us scale.

We're looking for a Senior Electrical Engineer who thrives in a fast-paced prototyping and productization environment. You'll own the electrical design and integration for our HVAC retrofit product - from early prototypes to production-ready systems. This role is highly cross-functional, fast-moving, and focused on real-world deployment - not just design simulation.

You'll work on:

• Custom PCBs
• Embedded microcontrollers
• Cable assemblies
• Design validation & test procedures
• Field-deployable electrical systems

This is a startup build role, not a consulting or facilities role. You'll solder, debug, document, and push designs into the field, sometimes all in the same day.

• Lead electrical system design from concept through production and field deployment
• Own PCB layout, cable assembly design, and system-level schematics
• Write and maintain SOPs, test plans, and internal electrical standards
• Support creation of BOMs, wire harness specs, and DVT procedures
• Select and integrate sensors, actuators, relays, and controllers for HVAC-relevant environments
• Develop embedded firmware (C/C ) or partner with firmware lead for control logic
• Work closely with mechanical and thermal teams on fit, routing, and system integration
• Lead and document design validation testing, production handoffs, and field commissioning support
• Participate in ECO/ECN processes as design evolves through pilot and production cycles
  

• B.S. or M.S. in Electrical Engineering, Mechatronics, or related field
• 5+ years of experience in product-focused EE roles (not infrastructure or facilities-only)
• Strong hands-on experience with:
• PCB design and bring-up
• System schematics + wire harness design
• Embedded C/C programming
• UL/CE compliance or safety certification processes
• Test fixture design, bench validation, and small-scale manufacturing support
• Demonstrated ability to own electrical design through production release
• Startup-ready mindset: resourceful, proactive, comfortable with ambiguity and tight loops
  

• Engineers focused on substation, MEP, or high-voltage-only design
• Candidates without PCB and embedded experience
• Engineers who've only worked in large orgs or R&D and haven't shipped physical products
• Candidates looking for a narrow or siloed role - we need generalists who can execute
  

• Liquid desiccant systems, HVAC retrofit exposure, or building automation
• Support for pilot production, field deployment, or install QA
• Familiarity with ECO/ECN workflows, production transfer, or supplier coordination
  

• Help scale a high-impact technology that tackles both climate and indoor air quality
• Get in early at a fast-moving, engineering-led startup
• Competitive compensation, equity, benefits, and real ownership
• Direct influence over product outcomes and company trajectory

Send your resume and a short note about your most relevant project (bonus for hardware portfolios) to: