Embedded Engineer to CheckWatt 🔋
Checkwatt AB
Company Overview
CheckWatt AB
Danderyd, Sweden
2011
Approximately 60 employees (source: linkedin.com). Revenue of 277 million Swedish kronor in FY 2024 (source: checkwatt.se).
What They Do
CheckWatt operates as an energy service company specializing in the measurement, monitoring, and control of energy storage, renewable electricity production, and flexible electricity consumption (source: checkwatt.se). The company has developed a unique "virtual power plant" technology that integrates various flexible energy resources, including residential and commercial batteries, electric vehicle chargers, solar installations, and wind turbines, to optimize grid stability and profitability (source: checkwatt.se). This innovative approach allows CheckWatt to aggregate numerous small and large batteries, enabling customers to participate in electricity markets and ancillary services that would otherwise be inaccessible due to scale limitations (source: checkwatt.se). Their flagship product, EnergyInBalance, provides a data visualization portal for customers to monitor their electricity consumption and production from various sources, enhancing user engagement and operational efficiency (source: checkwatt.se).
Projects & Track Record
CheckWatt has achieved several significant milestones in its operational history. In the winter of 2022/2023, the company successfully delivered local flexibility for the first time, utilizing a 300-kilowatt battery on the Stockholm Flex market (source: checkwatt.se). In November 2023, CheckWatt was awarded first prize in the E-Prize innovation competition for energy optimization, highlighting its commitment to advancing energy solutions (source: checkwatt.se). A major operational achievement occurred in summer 2024 when CheckWatt reached 100 megawatts of ancillary services delivery, fulfilling one-fifth of Sweden's total FCR-D ancillary service demand (source: checkwatt.se). The company also connected its 10,000th site to its virtual power plant, showcasing its rapid growth and integration capabilities (source: checkwatt.se).
Recent Developments
In April 2025, CheckWatt was acquired by Emaldo Power, creating the Nordic region's largest renewable energy aggregator (source: checkwatt.se). This strategic merger combines Emaldo's energy management solutions with CheckWatt's expertise in virtual power plants and grid balancing, ensuring continued investment in development and expansion into new European markets (source: checkwatt.se). Prior to this acquisition, CheckWatt reported a remarkable revenue growth of 146 percent in 2024 compared to 2023, driven by its aggregation services for approximately 15,000 customers (source: checkwatt.se). The launch of CheckWatt AI in February 2025 marked a significant technological advancement, integrating AI-driven forecasting with ancillary service delivery (source: checkwatt.se).
Working There
CheckWatt employs approximately 60 staff members, indicating a diverse organizational structure that includes technical and business functions (source: linkedin.com). The company maintains offices in both Stockholm and Gothenburg, suggesting potential hiring opportunities in these locations (source: checkwatt.se). The culture at CheckWatt is mission-driven, focusing on enabling households and businesses to contribute to a stable, renewable energy system (source: checkwatt.se). The emphasis on innovation and technical excellence is evident from their recent E-Prize award and the implementation of cutting-edge AI solutions, positioning CheckWatt as a leader in grid flexibility technology (source: checkwatt.se).
Last updated on Feb 23, 2026 | Report an issue
Job Description
At CheckWatt, we're a team of dedicated innovators on a mission to drive a sustainable future for Sweden and beyond. We are a green tech company that is rapidly growing in the environmental and energy sector. As part of our exciting growth journey, we are now looking for a new team member to help shape the future of sustainable energy solutions.
With our leading technology, we're revolutionizing virtual power plants by connecting solar panels, wind farms, and battery storage to create smarter, sustainable energy solutions 🍀.
About the role
As an Embedded Engineer at CheckWatt, you'll develop power control software for our Linux-based IoT-edge nodes and manage tens of thousands of installations across Sweden and, soon, internationally - all centrally controlled via our backend cloud.
You will be joining a growing company of 60 people that is slowly leaving its startup days behind. As we grow and evolve, people often choose to engage in various aspects of the business, offering valuable technical assistance in different areas. This collaborative approach allows team members to explore new challenges and expand their expertise across the organization.
Your Contribution
You will maintain and improve the control software integration toward 50 brands of power hardware.
- Develop control software for solar, power-inverters and batteries
- Integrate and implement new cost and revenue optimizing algorithms from our PhDs and test run their theory in real life.
- Design codebase, for testability and robustness.
- Administer and deploy to our fleet.
- Enhance fleet automation (diagnostics, monitoring and troubleshooting).
- Collaborate with Backend/Frontend to release new features.
Qualifications
We search for someone who is an independent and fast performer. You provide clean production ready Pull-Requests and participate in code reviews. Autonomously identify issues and act when the benefit outweighs the time- and risk cost. You will likely have a relevant Master of Science degree and more than five years of technical work experience in the areas mentioned below:
- Programming: Object-Oriented design (Python, a little .NET), multithreading, race condition handling, unit testing (e.g. PyTest) and Git.
- Embedded Systems: The analytical grit required troubleshooting embedded hardware anomalies. Bits and bytes, endianness, writing communication register-interfaces, and analyzing logs is you.
- Linux: Fluent proficiency with Linux shell, SSH, SCP, Rsync, GNU screen, network stack, Wireshark, etc
Greatly advantageous
- Embedded Linux: kernel, device-trees, system.d, drivers, cellular modems - for our platform.
- Background in power electronics
- Microcontroller software/hardware development
- High level technologies: C#, SQL, UML, Docker
Way of Working
Embedded team operates in "just-in-time" delivery. While the Backend team may have the luxury of working against goals 4 months out, we in Embedded teams adjust our priorities rapidly as this market is young and customer needs quickly change.
Most coding and debugging is done against a real live installation, and thus suitable for remote-hybrid work. (200 kWh of batteries would be unsuitable in the office 😉)
We work loosely agile in JIRA with Feature Epics, but Task breakdown is mainly created by each individual engineer.
You will have the opportunity to work hybrid remote, and on Wednesdays, we meet at the office for "gofika". Our headquarters is in Stockholm, but your nearest office will be on the "best coast" here in Gothenburg.
Why CheckWatt? 🔋
At CheckWatt, we are committed to creating a stable, renewable energy system with unlimited access to affordable, clean electricity. We value diversity, collaboration, and continuous learning, offering you the chance to grow in a dynamic industry driven by innovation and customer focus.
Our services:
- 🌻 Virtual Power Plants - Networks of flexible energy resources, such as solar panels, wind farms, and battery storage, for a stable and efficient grid.
- ⚡ Energy Monitoring & Management - Tools for visualizing and optimizing energy production and consumption, including individual measurement and billing (IMD) for households and businesses.
- 🔋 Smart Control of Renewable Energy Sources - Optimization of solar and wind power production and battery storage to maximize efficiency and profitability.
Read more here: CheckWatt's service
Interviews are happening on a rolling basis, so don't wait - apply today!
If you have any questions about the role or the process, feel free to reach out to [email protected]
Apply now
Job expired?Please let Checkwatt AB know you found this job on Rejobs. This will help us grow and get more people to work on renewable energy!
Apply now
Job expired?Please let Checkwatt AB know you found this job on Rejobs. This will help us grow and get more people to work on renewable energy!
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About the role
April 3, 2026
Full time
Company
- Gothenburg, Sweden
More than five years of technical work experience
UTC+01:00