Senior Software Engineer at Reel

✨ The Stack take on this Reel job

• 🏢 Reel has 2 jobs here, 2 with visa sponsorship see all

Updated 2026-11-05, from our data and official sources.

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About the role

Responsibilities:
- Design, build and operate backend systems that power real-time dispatch, trading and forecasting tools.
- Develop and maintain data pipelines that ingest, process and serve large volumes of time-series energy data.
- Build and own critical systems such as billing engines, asset integrations (solar, wind, batteries) and analytics services.
- Ensure production reliability, monitoring, incident response and scalable infrastructure as volume grows.
- Drive technical direction: perform code reviews, mentor colleagues and contribute to architecture decisions.

Requirements:
- Significant experience shipping backend systems to production and owning end-to-end features.
- Experience with real-time data processing, scalable data pipelines and reliability engineering.
- Familiarity with Elixir/Phoenix is a plus; experience with TypeScript, Python and cloud platforms (GCP) is valuable.
- Knowledge of time-series and analytical storage (Postgres, TimeScaleDB, BigQuery) is beneficial.
- Strong ownership, pragmatic problem solving, focus on reliability and a willingness to learn the energy domain.

Responsibilities

As a Senior Software Engineer, you will help companies achieve lower electricity costs and drive climate impact by building software for the renewable energy transition. You will work on high-stakes systems, maintain backend systems, and contribute to user-facing features.

Requirements

Candidates should have solid experience in building and maintaining backend systems in production and a strong bias for shipping software. Curiosity about energy and a willingness to learn are also valued.

Key skills

• Software Development — in 71 other listings on The Stack
• Backend Systems — in 32 other listings on The Stack
• Data Processing — in 16 other listings on The Stack
• Real-Time Systems — in 11 other listings on The Stack
• Code Reviews — in 40 other listings on The Stack
• Elixir — in 8 other listings on The Stack
• Phoenix Framework — not in any other listing on The Stack
• TypeScript — in 467 other listings on The Stack
• Python
• Machine Learning
• Energy Trading
• Cloud Computing
• Postgres
• BigQuery
• Team Collaboration
• Problem Solving

On The Stack (as of 2026-11-05)

• Reel has 1 other listing on The Stack, 1 of them marked as offering visa sponsorship.
• 15 visa-sponsored jobs in Denmark on The Stack, posted in the last 60 days.
• 195 visa-sponsored software engineer jobs in Europe on The Stack, posted in the last 60 days.

Frequently asked questions about Reel

Is this Senior Software Engineer role still open?

It was posted on 2026-04-01. Listings more than 30 days old may no longer be active, so check Reel's site before applying.

Does Reel offer visa sponsorship?

This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Reel's site.

Where is this role located?

The listing gives the location as København, DK, Denmark. It is marked on-site.

What skills does this role ask for?

The listing names: Software Development, Backend Systems, Data Processing, Real-Time Systems, Code Reviews, Elixir, Phoenix Framework, TypeScript, Python, Machine Learning, Energy Trading, Cloud Computing, Postgres, BigQuery, Team Collaboration, Problem Solving.