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Software Engineer

Reel Energy

Reel Energy

Software Engineering
Copenhagen, Denmark
Posted on May 7, 2025
Engineering & Product · Copenhagen

Software Engineer

Join Reel to build out the digital infrastructure for the renewable energy transition.

In A Nutshell

  • We are building the leading B2B electricity supplier in Europe. We are building an exceptional team and are on a trajectory to drive impact at scale.
  • Reel is rethinking electricity procurement to accelerate the renewable energy transition and reduce emissions.
  • As a workplace, we highly value trust, autonomy, and time for focused deep work.
  • You have a high passion for renewable energy and want to put your skills to use in a highly purpose-driven, supportive and collaborative organization.
  • For more info on Reel, see our careers page.

How You Can Contribute

The Impact You Will Make

As our new Software Engineer, you will be directly helping companies achieve lower electricity costs and drive real climate impact. You will work closely with Christian, our CTO, and the rest of the tech team to build the digital infrastructure of the renewable energy transition.

What You Will Work On

These are some (not all) of the things you will be working on

  • Build software for controlling grid-scale batteries to help stabilize the grid in real-time.
  • Develop features for our user-facing analytics tools to provide insights into consumption, production, emission and financial data.
  • Build secure integrations with physical (solar, wind and battery) assets.
  • Build out best-in-class data pipelines handling vast amounts of data.
  • Expand our electricity billing engine, ensuring accurate and on-time billing for our customers.
  • Take part in making key technical decisions.
  • Perform code reviews, sharing constructive feedback with your colleagues.

How You Can Thrive In This Role

You are enthusiastic about having a real impact on climate change. With a keen interest in renewable energy and sustainability, you are motivated to use your skills to contribute to a cleaner, greener future. You do not need to have prior knowledge about renewables, PPAs, or electricity.

In addition, you will have some (not necessarily all) of the following traits:

  • Enjoy working on projects all the way from 0 to 1, shipping multiple times a week.
  • Like to work across the entire tech stack, but with a focus on back-end and data.
  • Have 2+ years of professional experience working with software engineering.
  • Value learning and growing your skillset with support from your team.
  • You thrive working in an environment with a high degree of autonomy and responsibility, but are also not afraid to reach out and ask for help.
  • We work in Elixir, using the Phoenix framework and LiveView for the front-end + Python for ML and trading. We’re hosted on Fly.io and GCP, data in Postgres and BigQuery. Experience in this stack is by no means a requirement - several engineers on the team today had no prior experience in Elixir.

What We Offer You

We aim to provide you with a workplace environment where you can grow both professionally and personally. We offer an attractive base salary as well as a generous warrant program for all full-time employees.

Benefits

  • Vacation: Enjoy 30 days (5 weeks + 1) of paid holidays to recharge.
  • Pension: Benefit from an attractive employer-supported pension scheme, including health insurance.
  • Parental leave: Take advantage of our generous parental leave policy.
  • Equipment: Choose your preferred IT setup (Mac, Windows, etc.) with a budget of 25,000 DKK.
  • Learning: Grow your skills with an annual 4,000 DKK learning and development budget.
  • Office: Experience our vibrant office-first culture in our beautiful waterside location in Christianshavn, with a flexible work-from-home or remote work policy.
  • Lunch: Enjoy employer-supported catered lunch at the office every day.
  • Socials: Join us for monthly social events and bi-annual offsites, fostering a strong team spirit.
  • Visa: We support non-EU residents by sponsoring VISAs.

Interested?

We are very excited to hear from you. You can find more information about the interview process here.

You don't feel like you fulfil all the criteria?

We know that 'perfect' candidates do not exist. Don't hesitate to apply even if you don't fulfil all of the listed criteria on paper.

We encourage all candidates, regardless of age, gender, sexual orientation, ethnicity, religious beliefs, etc. to apply.

Department
Engineering & Product
Locations
Copenhagen

About Reel

Reel is creating a new way of buying electricity to accelerate the renewable energy transition. We are on a mission to empower companies to make a positive difference for climate through the electricity they buy. Reel enables all companies to enter a new type of electricity contract (Power Purchase Agreement) that reduces CO₂ emissions by adding new renewable electricity to the grid.

Founded in 2020
Engineering & Product · Copenhagen

Software Engineer

Join Reel to build out the digital infrastructure for the renewable energy transition.