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Sunday Power

Sunday Power

Software Engineer

Full-time

On-site

Who we are looking for

Join Sunday Power as a versatile Software Engineer, driving innovation across our stack to accelerate the energy transition in commercial real estate with impactful, scalable solutions.

or

Highlights

Software Engineering
Full-stack Potential
Startup Environment
Scalability
Reliability
AWS Cloud
F#
Typescript
Docker
Oslo Based
Sustainable Tech
Problem Solving
Relevant experiences

3+ years of professional experience in full-stack, backend, or infrastructure software development.

A quick learner and self-starter who's comfortable taking on responsibility and independently identifying, analyzing, and solving complex technical problems.

A solid understanding of software engineering basics, modern development practices, and clean code principles.

Experience with cloud-native architectures, including concepts like serverless and distributed systems design.

Authorized to work in Norway (EU/EFTA citizen) and willing to work from our Oslo office.

Nice to Have

Ability to contribute across multiple technical domains: backend, infrastructure, frontend, and potentially data science.

Proficiency in languages like F#, Typescript (React, Node), Python, or experience with AWS services and Docker.

Experience in designing fault-tolerant systems, optimizing database performance, implementing data streaming, or managing infrastructure costs.

A clear focus on delivering customer value and business impact with technical decisions.

A collaborative spirit, evidenced by a willingness to mentor peers, learn from others, and contribute positively to team dynamics.

Adaptability to a dynamic, fast-paced startup setting, comfortable with ambiguity.

Drive Innovation in Sustainable Energy

About the Role

At Sunday Power, we're building the future of sustainable energy in commercial real estate. We are looking for a versatile Software Engineer to join our growing, agile tech team. This role offers the unique opportunity to work across various parts of our technical stack, from backend systems and cloud infrastructure to frontend applications and potentially data science initiatives. You'll be instrumental in developing new features for our core product SundayOS, the leading solar and battery monitoring and optimization software for commercial real estate, with a strong focus on scalability and reliability.

You'll join a small, dedicated tech team with a CPO, CTO, and four developers, operating in a flat hierarchy where your contributions and ideas are highly valued. We embrace good engineering practices (version control, peer-review, reproducible builds) while staying flexible on technology, plans, and process to balance speed and quality effectively. This is a chance to make a tangible impact on the energy transition with your engineering skills.

Your Impact and Responsibilities

As a versatile Software Engineer at Sunday Power, your core responsibilities will span:
🛠️
Feature Development
Build and implement new features for SundayOS, ensuring high quality, scalability, and maintainability.
☁️
Cloud & Infrastructure
Contribute to the design, implementation, and management of our AWS-based cloud infrastructure, focusing on efficiency, cost-effectiveness, and reliability.
⚙️
System Scalability & Reliability
Design and optimize systems to handle growing data volumes and user loads, ensuring high availability and fault tolerance across our services.
🔄
Cross-functional Contribution
Collaborate and contribute across backend, frontend, and potentially data science domains, adapting to evolving project needs and learning new technologies.
💡
Problem Solving & Ownership
Independently identify, analyze, and resolve complex technical challenges, taking proactive ownership from conception to resolution.
🤝
Collaborative Engineering
Work closely with team members, participate in peer reviews, and contribute positively to a supportive and dynamic team environment.

Our Engineering Landscape

We believe in using the right tools for the job, and our current environment includes:
☁️
AWS Cloud Platform
🚀
F# for Backend Development
🌐
Typescript (React, Node, TanStack, shadcn)
🐍
Python, Databricks, marimo
🐳
Containerization with Docker
📜
Bash Scripting

Make a Real Impact

Why Join Sunday Power?
Joining Sunday Power means becoming part of a mission-driven team that's making a tangible impact on the world's energy transition. We offer a unique opportunity to contribute to cutting-edge technology in a rapidly evolving market.

Our Nordic work culture emphasizes a flat hierarchy, where every team member is encouraged to contribute to discussions about the company's direction and strategy. We value collaboration, innovation, and a hands-on approach to solving real-world problems. This is a chance to be part of a company with proven success, high ambitions, and a genuine commitment to sustainability.

Perks & Benefits

We value our team and offer a supportive environment:
🌱
Startup Journey
Be part of a once-in-a-lifetime startup journey with high ambitions.
🤝
Caring Team
Join a passionately driven and caring team that works together.
💰
Competitive Compensation
Attractive base salary combined with stock options.
🏢
Central Oslo Office
Work in brand-new offices in central Oslo, featuring a rooftop terrace.
🍽️
Daily Delights
Enjoy free lunch and great coffee.
💻
Tech Freedom
Free choice of laptop and cell phone to suit your preferences.
🧘
Work-Life Balance
Focus on a healthy work-life balance.
🚌
Easy Commute
Conveniently located near public transit.
🎉
Social Gatherings
Regular social events and beers on the terrace.

Our Culture

At Sunday Power, we embody values that drive our success and impact:
💡
Impact-Driven Innovation
Committed to driving the energy transition through cutting-edge solutions.
🤝
Diverse Expertise
A rich blend of experience from technology, renewable energy, and real estate.
💚
Customer-Centric Sustainability
Delivering exceptional customer experiences and long-term value.
🗣️
Flat Hierarchy
Everyone is encouraged to participate in discussions about company strategy.
Sunday Power

https://sundaypower.no/

Our offering

Sunday Power is at the forefront of the energy transition in commercial real estate, offering comprehensive Solar as a Service and Battery as a Service solutions. We design, install, and operate solar cell and battery systems for commercial properties, enabling building owners to get greener, more valuable assets and tenants to access cheaper, sustainable electricity—all without upfront investment or risk. We manage the entire process, ensuring seamless implementation from initial assessment to operational efficiency. Our proprietary platform, SundayOS, is a core offering, providing integrated operation, optimization, billing, and monitoring for solar and battery systems. Powered by smart AI algorithms, SundayOS maximizes energy production, minimizes downtime, and offers secure data access and efficient control through the Sunday Box. Our innovative partner model, supported by competitive capital from the Norwegian power group NTE, allows us to realize projects without financial burden on property owners. We pride ourselves on scalable rollouts, capable of implementing solar solutions across entire property portfolios with minimal client-side resource usage.

Key stats

2021
Established
120+
Installations
9.7/10
Customer Satisfaction
4,500+
Tons of CO2 saved

Our culture

💡
Impact-Driven Innovation
We are committed to driving the energy transition, creating tangible environmental and economic benefits through cutting-edge solar and battery solutions.
🤝
Diverse Expertise, Shared Vision
Our team brings together a rich blend of experience from technology, renewable energy, and real estate, united by a clear goal to make sustainable energy accessible.
💚
Customer-Centric Sustainability
We believe that achieving our mission to green commercial real estate goes hand-in-hand with delivering exceptional customer experiences and long-term value.
Stay Connected
LinkedIn

LinkedIn

/sunday-power

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