Senior Backend Software Engineer

Denver, CO, USA
10 days ago
Full time role


At Zero, we are changing the paradigm of how homeowners plan and purchase energy upgrades for their homes. We are ...

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Job Description

At Zero, we are changing the paradigm of how homeowners plan and purchase energy upgrades for their homes. We are eliminating pesky, high-pressure sales calls from contractors and providing actionable intelligence to homeowners in a fraction of the time. 

It’s never been more important to help homeowners understand the health of their home, how it impacts the planet, and do something about it without all the hassle. With Zero, homeowners experience a quick, no pressure, and delightful experience purchasing upgrades for their home. By partnering with certified contractors Zero helps to facilitate installations for heat pumps, solar, electrical, and insulation, giving homeowners a single point of contact through their project. 

Who we are

Zero is a climate tech company on a mission to electrify every home to build a happier, healthier world. 

The brain child of a previous contracting business, Zero is building the toolkit to automate the design of all-electric home energy upgrades. We are building a simple experience for homeowners to enable them to plan, purchase, and schedule installations with local, certified contractors within minutes. 

Zero is venture-backed, based in Denver, CO and partnered with the National Renewable Energy Lab (NREL). Learn more at 

Who you are

You love to get your hands dirty and are comfortable being in the trenches building and problem-solving. You’re a curious, “doer” type with a bias for action, but also know when to zoom out and examine the big picture. You have broad and deep expertise in building complex and robust pipelines and more generally, backend software systems. You are a risk-taker, great communicator, and a phenomenal team player who has a proven track record of engineering excellence.

Beyond engineering, you have substantial experience operating in an early team, are easy-going, hardworking, and want to save-the-damn-planet!

What you’ll do

As one of the core software developers at Zero, you’ll have a unique opportunity to work on software that will change the paradigm of how homes are electrified. The software you build will enable millions of homeowners to simply electrify their homes and help tens of thousands of contractors improve their businesses. You’ll work directly with our Head of Engineering and CEO to develop our next generation product and design engine. You will be hands-on, creating exciting automated pipelines and applications that make it easier to evaluate homes, model heat pump systems, and help homeowners upgrade their homes. 


  • 5+ years of backend software development experience
  • Previous title of: Techn Lead, Principal Engineer, Staff, etc. 
  • A polyglot with substantial backend experience across many languages and frameworks.
  • Experience with one or more cloud technologies (eg. GCP, AWS, Azure) and deployment infrastructure (CI/CD, containerization, scalability, serverless).
  • Substantial experience in an early/small teams (e.g. ex-founder, founding engineer, one of the first 10 employees)
  • Strong leadership, problem-solving, analytical, and communication skills.

Nice to have

  • Substantial experience in building energy modeling in one or more of Openstudio-hpXML, EnergyPlus, or Ladybug tools.
  • Substantial experience in using CAD software (Revit, Rhino, Sketchup or equivalent)
  • Experience with BPI-2400 calibration & compliance, and/or Manual J and S. 
  • Strong math and/or data analysis background. 
  • Experience with residential building systems, energy efficiency, HVAC, solar, or energy.


The expected compensation range for this role is between $125,000-$160,000 and a meaningful equity stake. 


  • Meaningful Stock Options
  • 3-weeks PTO
  • Health Insurance
  • Workstation Stipend
  • 1 WFH (Possibly 2 in future)

Get In Touch!

We’re solving the world’s hardest problem, climate change! You’ll have an opportunity to dramatically impact and improve millions of people’s home life (literally).

We have a wholesome company culture – we’re passionate, vision-driven, low-ego, and respect each other. We’re honest, realistic, and always transparent – across all areas of the business.

How to Apply:

Please send us a 3-5 minute video with the answers to the following questions to

  • What excites you about this role and why are you the right person for it?
  • Tell us about one of your favorite technical problems you’ve faced (and solved) and explain in as much detail as you can how you solved it.

At Zero, we are changing the paradigm of how homeowners plan and purchase energy upgrades for their homes. We are ...

View Company Profile

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