Senior Software Engineer

Reel; København; Hybrid; DKK 900,000 - 1,100,000; Full time

Benefits offered by this job

Base salary + warrant programme

30 days vacation

Pension with health insurance

Parental leave

IT equipment budget 25,000 DKK

Office in central Copenhagen

Lunch at office

Monthly socials

Job summary

Reel is building software to accelerate the renewable energy transition, seeking a Senior Software Engineer to lead backend work and scale data infrastructure in Copenhagen.

You will ship end-to-end features, own production systems, and collaborate with the CTO and cross-functional teams. Our stack includes Elixir/Phoenix, TypeScript, Python, Postgres, and BigQuery, with hybrid in-office work in central Copenhagen.

Qualifications

• Solid experience building and maintaining production-grade backend systems.
• Willingness to ship end-to-end projects from idea to release.
• Interest in applying AI tools to improve software delivery.

Responsibilities

• Build and maintain key backend systems for billing and market entry.
• Build the data backbone and real-time energy data pipelines.
• Scale infrastructure to support growing volume and geography.
• Ship user-facing analytics and platform tools for customers.
• Contribute to technical decisions and code reviews.

Skills

Backend development

Elixir

Phoenix

TypeScript

Python

Production systems

Tools

PostgreSQL

TimeScaleDB

BigQuery

GCP

Job description

About Reel

We are rethinking electricity to accelerate the transition to a carbon-free energy system.

How You Can Contribute

As our new Senior 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 engineering and product team to build the software powering the renewable energy transition.

What Your Role Will Look Like

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

• Build and maintain key backend systems: From our electricity billing engine handling accurate and on-time billing, to leading the technical work for entering new markets.
• Build the data backbone of our platform: Design and maintain the pipelines and backend systems that ingest, process, and serve large amounts of real-time energy data reliably and at scale.
• Build for scale: We are growing fast - in volume under management and geographically - and you will be part of building the infrastructure to support that growth.
• Ship user-facing features with real impact: Contribute to the analytics and platform tools our customers rely on daily to understand their consumption, production, and emissions.
• Raise the bar and help set the direction: Perform code reviews, share feedback with colleagues, contribute to key technical decisions, and be a core member of the team shaping how our tech evolves.

We think you will thrive in this role if

• You have solid experience building and maintaining backend systems in production.
• You enjoy taking projects from idea to shipped, and like to ship often.
• You care deeply about reliability and want to stay close to production.
• You default to simple, pragmatic solutions.
• You work well independently, make decisions with confidence, and know when to bring others in.
• You enjoy sharing knowledge and helping others level up.
• Curious about how AI tools can help us ship better software as a team.

We work in Elixir, using the Phoenix framework and LiveView + TypeScript for the front-end. We use Python for ML and trading. We're hosted on GCP, data in Postgres w. TimeScale and BigQuery. Experience in this stack is by no means a requirement - several engineers on the team today had no prior experience in Elixir.

Please note that we are located in Copenhagen, Denmark and this is an in-office role with flexibility for hybrid work.

Working at Reel

At Reel, we care deeply about our people. We offer a workplace that values initiative, ownership and kindness, with ample room for personal and professional growth. We believe great teams are built by welcoming people with different backgrounds, perspectives, and lived experiences.

You will join a tight-knit team on an ambitious journey, where the impact of your role will be visible and recognisable on a daily basis. Every colleague - from founders to student assistants - are in this together. We cherish focus and autonomy just as much as team work and setting time aside for having fun together - at our monthly socials, bi-annual offsites and daily coffee chats in our bright and spacious office in central Copenhagen, 2 minutes from the metro.

Read more about working at Reel at our Careers page.

What We Offer You

• Compensation: A healthy base salary + warrant programme
• Vacation: 30 days (5 weeks + 1) of paid holidays to recharge
• Pension: Employer-supported pension scheme, including health insurance
• Parental leave: A generous parental leave policy
• Equipment: Choose your preferred IT setup (Mac, Windows, etc.) with a budget of 25,000 DKK
• Office: A vibrant office-first culture in central Copenhagen with a flexible remote work policy
• Lunch: A delicious lunch at the office every day - and your daily caffeine fix from our espresso machine
• Socials: Monthly social events and bi-annual offsites where we have fun, unwind, and nurture our team spirit
• Visa: We're only able to support relocation with an existing EU work visa for this role.

Interested?

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

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

We know that 'perfect' candidates do not exist. 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.