Optimisation Engineer
Ingrid Capacity
Company Overview
Ingrid Capacity (privately held)
HeadquartersStockholm, Sweden
Founded2022
SizeApproximately 60 employees globally (source: business-sweden.com)
What They Do
Ingrid Capacity is an energy technology company specializing in the development and operation of grid flexibility infrastructure, with a core focus on battery energy storage systems and advanced optimization software (source: ingridcapacity.com). Founded in 2022, the company designs and structures innovative energy supply and capacity solutions, including tolling and floor agreements, to support constrained electricity grids (source: ingridcapacity.com). Their proprietary trading and optimization platform enhances grid utilization and stability by managing flexible assets across Europe, targeting system operators, energy users, and power producers in grid-constrained markets (source: notified.com). Ingrid Capacity positions itself as a Nordic leader in energy storage, actively supporting electrification through scalable battery assets and energy contracting structures (source: business-sweden.com).
Projects & Track Record
Ingrid Capacity operates more than 200 MW/MWh of battery energy storage and has approximately 270 MW/340 MWh under construction in Sweden and Finland, with a development pipeline exceeding 6 GW across Europe (source: business-sweden.com). A flagship project is the Nordics’ largest battery energy storage system currently in the design phase in Horsaryd, Sweden, with a planned capacity of 100 MW/200 MWh (source: ingridcapacity.com). Another key milestone was the 2026 opening of a battery storage facility in Rättvik, developed in partnership with SEB Nordic Energy Fund and Locus Energy, aimed at enhancing grid flexibility in western Sweden (source: ingridcapacity.com). The company has also expanded cross-border, including a strategic partnership with French developer Wattmen and a collaboration with Germany’s Energiequelle to develop 200 MW of grid-connected battery systems, where Ingrid manages financing, operation, and optimization (source: windbranche.de).
Recent Developments
In 2026, Ingrid Capacity announced it had doubled its battery storage portfolio, surpassing 1 GWh in capacity, reflecting rapid scaling of its operating and construction assets (source: ingridcapacity.com). The company also formalized its corporate leadership with appointments including Axel Holmberg as CEO and Erik Sellstedt as CFO, signaling maturation of its organizational structure (source: ingridcapacity.com). Strategic partnerships have been a focus, such as the February 2026 alliance with Wattmen to expand in continental Europe and the late 2025 collaboration with Energiequelle in Germany to develop large-scale battery storage projects (source: ingridcapacity.com). These moves support Ingrid’s ambition to broaden its footprint beyond the Nordics into France, Poland, and Germany (source: business-sweden.com).
Working There
Ingrid Capacity offers roles primarily in engineering, grid optimization, energy markets and trading, business development, finance, communications, and project development, reflecting its technical and commercial focus on intelligent grid infrastructure (source: ingridcapacity.com). The company’s culture emphasizes fast growth, European expansion, and specialization in cutting-edge energy storage technologies rather than traditional utility models (source: linkedin.com). Headquartered in central Stockholm, Ingrid Capacity maintains a dynamic environment suited for professionals interested in shaping the future of flexible energy systems across Europe.
Last updated on Sep 6, 2026 | Report an issue
Job Description
Ingrid was born out of a simple belief: the energy transition must move faster and work smarter. We're pioneers at the forefront of the global energy transition - pushing boundaries, turning bold ideas into reality, and solving the problems that matter most.
The INtelligent GRID of tomorrow needs to absorb and release more power. We develop, build and operate high-performance batteries - the lungs of modern energy infrastructure - enabling a more flexible and resilient energy supply across Europe. With 500 MW already deployed across the Nordics and rapid expansion into continental Europe, we manage, optimise and trade both our own assets and those of third parties through our sophisticated tech platform, making every battery - and the entire grid - stronger.
About the team
At Ingrid, our tech team builds and maintains an in-house optimisation engine to maximise battery efficiency within the grid. We also focus on creating a data-driven culture by building data pipelines and a Business Intelligence layer to provide stakeholders with actionable insights. Our team plays a key role in driving strategic decision-making and overall company success, and we work closely together to ensure a smooth transition of ideas from concept to reality. At Ingrid, we foster a collaborative and inclusive environment where everyone's voice is valued. We believe in empowering our team members to make a real impact.
About the role
As our Optimisation Engineer at Ingrid, you'll lead efforts in optimising battery storage to support the grid and transition to renewable energy. You'll be key in improving our battery optimisation algorithms, ensuring they operate at peak efficiency. This role requires strong mathematical skills and a mix of optimisation techniques. The impact of your work on our revenue is substantial, with an annual output that continues to grow. You'll collaborate across teams to incorporate diverse data into our models and translate insights into actions.
Location: Stockholm (on-site)
What you'll do
- Contribute to the evolution of our battery system optimisation algorithms. Craft and refine them to maximise efficiency and economic performance, leveraging multi-stage optimisation strategies.
- Apply your mathematical expertise to real-world energy challenges. Apply deep mathematical knowledge and cutting-edge problem formulation techniques to tackle intricate energy storage challenges using stochastic optimisation, linear programming, and reinforcement learning.
- Bridge the data gap. Collaborate closely with your team to seamlessly integrate forecasts and other crucial data into our optimisation models.
- Champion innovation. Cultivate a culture of continuous improvement by actively contributing to the advancement of our data science and optimisation approaches.
- Collaborate to optimise. Work closely with stakeholders to align business goals with tailored optimisation solutions.
Who we think you are
Ideally, you have experience from the energy sector, particularly battery storage or renewable energy systems, and experience in battery optimisation or hydro optimisation is, of course, very meritorious. You have a track record of innovation and a problem solving mindset, in complex, data-driven projects.
Here's what will set you up for success:
- Experienced Optimiser: You have proven experience in optimisation, data science, operations research, applied mathematics, or other related field, with a strong foundation in optimisation algorithms and/or machine learning.
- Math Mastermind: Solid foundation in mathematical concepts essential for optimisation modeling, including linear programming and scenario analysis.
- Technical Expertise: You're comfortable applying various optimisation methods, including linear programming. Proficiency in Python or another suitable programming language for optimisation tasks is required.
For this role, we think you have an educational background in mathematics, engineering physics, data science, energy systems, computer science or similar.
Why join us?
At Ingrid, we're pioneers at the forefront of the global energy transition - pushing boundaries, turning bold ideas into reality, and solving what matters most. Our culture is built on Bold Impact Curious Grit Inspiring Collaboration. We believe a thriving organisation runs on trust, growth, and learning from mistakes - and that wellbeing matters as much as work. From lunch & learns to social activities, we make space to connect, recharge, and thrive together.
Next step
We'll make selections on an ongoing basis and finalise the recruitment as soon as we've found the perfect match. This process will run over summer vacations and we will keep everyone involved updated on our expected timeline.
We look forward to hearing from you!
/Team Ingrid
Apply now
Job expired?Please let Ingrid Capacity know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
Apply now
Job expired?Please let Ingrid Capacity know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
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About the role
September 9, 2026
September 9, 2026
Full time
On-site
Company
- Stockholm, Sweden
Experienced
UTC+01:00