Senior Software Engineer

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Senior Software Engineer

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

Full-time · Copenhagen, DK

In A Nutshell

  • Electricity accounts for 2/3 of global greenhouse gas emissions. Reel is rethinking electricity procurement to accelerate the renewable energy transition and reduce emissions.

  • We are building the leading B2B electricity supplier in Europe. We are live in the market and are on a trajectory to drive impact at scale.

  • As a workplace, we value trust, autonomy, and time for focused deep work.

  • You are a kind, driven and enthusiastic person, with a genuine sense about sustainability issues.

  • You have experience as a software engineer 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 Senior Software Engineer, you will be directly helping companies achieve lower electricity costs and drive real climate impact. You will work directly with Christian, our CTO, and the rest of the tech team to build the digital infrastructure for the renewable energy transition.

This is a high impact role where you will work for a climate tech company. Your work will be integral to helping companies reduce their CO₂ emissions, and decarbonize our electricity grid.

What You Will Work On

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

  • Develop features for our user-facing analytics tools to provide insights into consumption, production, emission and financial data.

  • Build out best-in-class data pipelines handling vast amounts of data.

  • Integrating with new data providers to support expanding our product offering.

  • Build a strong ML Ops setup with tooling for training, deployment, and continued evaluation of performance of forecasting models in collaboration with ML Engineers.

  • Take part in making key technical decisions.

  • Perform code reviews, sharing constructive feedback with your colleagues.

  • Take ownership of the operations of our technical platform alongside your team members.

  • Keep a high level of technical quality, introducing new best practices, and keeping our systems up to date.

How You Can Thrive In This Role

You are enthusiastic about having a real impact on climate change. You do not need to have prior knowledge about renewables, PPAs, or electricity - just a passion for technology and making a difference, and a willingness to grow.

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

  • Enjoy working on projects all the way from 0 to 1 and shipping multiple times a week.

  • Would like to work across the entire tech stack, but with a focus on back-end and data.

  • Have 3+ years of professional experience working with software engineering.

  • Experience in working with data and data pipelines to collect, transform and store data efficiently and robustly.

  • 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. We’re hosted on, 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.

Compensation & Benefits


  • Attractive base salary.

  • Generous warrant program.

  • 5 + 1 weeks of paid holidays.


  • Parental leave.

  • 25,000 DKK budget to choose your own IT equipment.

  • Beautiful office close to the water in Christianshavn.

  • Employer-supported lunch when working from the office.

  • Flexible to work from home or elsewhere.

  • Monthly social events & bi-yearly off-sites.

  • We sponsor VISAs for non-EU residents.


We are excited to hear from you! You can find more information about the interview process on our careers page.

We know that 'perfect' candidates don't exist, so don't hesitate to apply if you don't fulfill all of the criteria. The only thing you need to ensure is that the problem we are solving at Reel is one you cannot wait to get out of bed for on Monday morning.

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