Senior Data Scientist
Flower
Company Overview
Flower Infrastructure Technologies AB, privately held
HeadquartersStockholm, Sweden
Founded2020
SizeApproximately 200 employees and over 150 million in financial backing (source: nasdaq.com)
What They Do
Flower is an energy technology company specializing in software and trading systems designed to optimize flexible power assets rather than developing traditional renewable energy projects. Their AI- and machine-learning-driven platform manages and trades batteries, wind and solar parks, EV chargers, and other distributed energy resources to maximize asset value and grid stability (source: flower.se). The platform models behavior, weather, and market data to automate decisions on charging, discharging, or trading flexible resources, unlocking predictability for asset and grid owners (source: flower.se). Their product scope includes grid-scale battery energy storage systems, green baseload, wind and solar power, demand response, and distributed energy resources, positioning Flower as an emerging grid-scale BESS developer (source: flower.se). The company targets owners and operators of flexible energy assets such as battery projects, wind and solar farms, EV charging infrastructure, and grid operators requiring balancing and ancillary services (source: business-sweden.com).
Projects & Track Record
Flower has built a strong track record in Sweden with multiple battery acquisitions and deployments. In September 2024, the company acquired Arise's ready-to-build 40 MW / 80 MWh battery energy storage system project, one of Sweden's largest battery projects (source: tech.eu). Additionally, Flower acquired Sweden's largest battery park, the 42.5 MW Bredh lla project, and activated three battery projects in July 2024—Bredh lla, Kung lv, and Hanhals—creating the country's largest battery portfolio (source: tech.eu). The company is recognized as a leading project developer for grid-scale batteries, trusted by European grid owners on both transmission and distribution networks (source: flower.se). Flower also manages a wind power PPA portfolio, including control over 11 wind farms totaling 180 GWh in Sweden, highlighting its role in flexible asset management for grid balancing (source: business-sweden.com).
Recent Developments
Flower has experienced rapid scaling in recent years. As of June 2026, the company had more than 140 employees and over 150 million in financial backing, managing the Nordics' largest portfolio of flexible assets (source: nasdaq.com). In August 2026, Flower's investor page showed monthly trading performance for its full portfolio of 1-hour battery systems and indicated ongoing expansion through senior secured bond issuances to finance energy infrastructure development across Europe (source: flower.se). A July 2026 press release announced new debt financing from Norion Bank to support continued growth in Sweden, with revenues rising from approximately SEK 10 million in 2022 to about SEK 100 million in 2023 (source: tt.se). Earlier, in September 2024, Flower raised 45 million in Series A financing, including an additional 20 million close led by Northzone, with investors such as Giant Ventures, 82an Invest, Sony Innovation Fund, Thomas von Koch, and Sebastian Knutsson (source: eu-startups.com).
Working There
Flower offers roles across commercial, technical, and asset-development functions, reflecting its diverse leadership structure that includes engineering, product, operations, asset development, distributed assets, commercial, finance, and people/culture departments (source: flower.se). The company is a growth-stage organization with approximately 200 employees, fostering an international environment at its Stockholm headquarters that encourages cross-functional collaboration (source: linkedin.com). Job seekers can expect opportunities in software development, energy trading, project development, operations, and corporate functions within a fast-growing energy technology firm (source: linkedin.com).
Last updated on Sep 6, 2026 | Report an issue
Job Description
Flower is Flexible Power. We are a next-gen energy company leveraging AI and machine learning to make renewable energy stable and always available - even when the sun isn't shining and the wind isn't blowing.
Through smart optimization and trading of energy assets like wind and solar farms, battery systems, and EV chargers, we make renewable energy reliable and predictable, leading the charge towards the energy system of tomorrow.
Who We Are
Tech company at heart. Purpose-driven at core. Flower consists of a diverse group of innovative individuals with a strong desire to improve the state of the world.
At Flower, we believe trust, collaboration and diversity are essential to not only create an inclusive work environment, but also drive career growth. By embracing varying perspectives, we allow creativity and progress to flourish.
To accelerate towards our goal of becoming the pioneering force powering the energy system of tomorrow, we are now looking for a passionate and skilled Senior Data Scientist to join us!
About The Role
As a Senior Data Scientist, you will shape the foundation of Flower's short-term forecasting capabilities - powering the models that directly drive our daily trading decisions. You will be part of a small, highly skilled team operating at the intersection of data science, energy systems, and close-to-real-time market dynamics.
You will own the full lifecycle of your models - from idea to production - working closely with Data Engineers, Machine Learning Engineers, and Energy Market Experts to ensure our forecasting stack runs smoothly and is continuously improving. This is a hands-on role focussed on time-series modelling, rapid experimentation, and the ability to translate data into high-impact operational decisions.
What You'll Do
- Build & maintain short term operational forecasting models for energy volumes & prices that drive our trading decisions on a day-to-day basis
- Build time series models to understand and explain recurring patterns across different measurements, products and regions to distill signals as features for your next model
- Prototype quickly: iterate on simple models, validate rigorously, and scale what works in a dynamic market environment
- Own the full model lifecycle: EDA, feature engineering, model development, validation, deployment and continuous evaluation, supported by our team of DEs, MLEs & Energy Market Experts
- Write your models in Python, version your code in Git, use CI/CD to ensure full reproducibility
- Partner with DEs to evaluate and integrate new data sources (weather, grid conditions, market signals)
- Collaborate & mentor across other data scientists, quants and engineers
Who You Are
- Master's or PhD in Statistics, Machine Learning, Computer Science, Industrial Engineering, Applied Mathematics, Engineering Physics, or a related quantitative field
- 5+ years building and deploying time-series prediction models in production using machine learning or classical methods
- Strong command of Python and no stranger to the command line; comfortable writing clean, maintainable, production-ready code
- Deep understanding of time-series forecasting and real-world modeling challenges
- Prior experience in energy markets or power systems
- Strong mentorship and coaching skills
- Highly driven by our mission and your impact, yet humble enough to know we are all always learning
- Eagerness to apply yourself in a mostly automated trading floor environment
- Thrive in a fast-moving environment and adapt models as markets evolve
Location
Our beautiful office is located in the heart of Södermalm, just a short walk from Slussen subway station. We encourage in-office collaboration but support a hybrid work model.
Our corporate language is English, as we have over 30 nationalities in the office. We therefore appreciate it if you could submit your CV in English.
Throughout the recruitment process you will meet with the Talent Partner, Head of Predictions and Optimization, the Team, VP of Engineering and VP of Product.
We look forward to hearing from you!
We kindly but firmly decline any engagement in recruitment assistance for our hiring processes. This includes partnership offers or the sale of recruitment tools.
Apply now
Job expired?Please let Flower 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 Flower 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
Hybrid
Company
Solar Energy, Wind Energy, Energy Storage, EV Charging Infrastructure, Smart Grid
- Stockholm, Sweden
5+ years
UTC+01:00