
Justera Group AB · Stockholm
About Justera Group Justera Group AB is a leading Swedish IT consulting firm with great experience specializing in building high-performing technology teams and...
About Justera Group
Justera Group AB is a leading Swedish IT consulting firm with great experience specializing in building high-performing technology
teams and delivering end-to-end IT solutions. Led by dynamic female executives, Justera Group focuses on helping businesses
harness the power of digital technologies to continuously evolve in today’s rapidly changing economy. The company has deep
expertise in IT consultancy, software development, and recruitment services, providing clients with purpose-driven, well-trained
consultants who consistently deliver efficient and effective results. Justera Group manages the entire talent lifecycle, from
hiring to ongoing management, ensuring the right fit for each project on time and within budget. With their strong commitment to
quality, collaboration, and client success, Justera Group is a trusted partner for technology innovation across Sweden.
We are seeking a Senior Machine Learning Engineer to join our engineering team in Stockholm. In this role, you will be responsible
for designing, scaling, and maintaining production-grade AI/ML solutions. You will play a pivotal role across the entire machine
learning lifecycle—from optimizing data pipelines and training models to architecting robust MLOps workflows in the cloud.
The ideal candidate brings a blend of rigorous software engineering discipline and deep machine learning expertise, capable of
solving complex algorithmic challenges while ensuring code is maintainable, secure, and highly scalable.
into scalable technical solutions.
system performance.
reproducible production environments.
maintainability and data integrity.
strong transparency with both technical team members and business stakeholders.
field, backed by extensive commercial engineering experience.
principles, core algorithms, and data structures.
(GCP) stacks.
(experiment tracking, continuous delivery for ML).
and when to collaborate or escalate for efficient resolution.
architectural clarity across teams.
About Justera Group Justera Group AB is a leading Swedish IT consulting firm with great experience specializing in building high-performing technology teams and delivering end-to-end IT solutions. Led by dynamic female executives, Justera Group focuses on helping businesses harness the power of digital technologies to continuously evolve in today’s rapidly changing economy. The company has deep expertise in IT consultancy, software development, and recruitment services, providing clients with purpose-driven, well-trained consultants who consistently deliver efficient and effective results. Justera Group manages the entire talent lifecycle, from hiring to ongoing management, ensuring the right fit for each project on time and within budget. With their strong commitment to quality, collaboration, and client success, Justera Group is a trusted partner for technology innovation across Sweden. About the Role: We are seeking an experienced Senior Data Scientist with strong expertise in Linear Programming (LP) and Mixed Integer Programming (MIP) to develop, maintain, and scale production-grade optimization solutions. This role requires a solid foundation in optimization, analytics, statistics, and machine learning, along with the ability to build robust, production-ready data science solutions in a cloud environment. The ideal candidate is an experienced Python developer who writes clean, modular, and maintainable code, possesses strong SQL skills, and enjoys collaborating with cross-functional teams to solve complex business challenges. Key Responsibilities: * Maintain, optimize, and enhance existing optimization models by identifying opportunities for improvement and implementing scalable solutions. * Develop, deploy, monitor, and maintain production-grade optimization and machine learning solutions in a cloud environment. * Build and improve data preparation, transformation, and aggregation pipelines while integrating new data sources to enrich model performance. * Analyze model outputs and communicate insights and recommendations to business stakeholders. * Translate business requirements into technical solutions and maintain clear communication throughout the project lifecycle. * Collaborate closely with Data Scientists, Machine Learning Engineers, Product Managers, and other cross-functional stakeholders. * Implement and support MLOps best practices, including deployment, monitoring, automation, and model lifecycle management. * Perform ad hoc data analysis and create visualizations to support data-driven decision-making. * Ensure solution reliability, scalability, and operational efficiency through continuous monitoring and performance improvements. Requirements: * Strong experience with Discrete Optimization, including Linear Programming (LP), Integer Programming (IP), and Mixed Integer Programming (MIP). * Proven experience developing and deploying machine learning solutions in production cloud environments, preferably Google Cloud Platform (GCP). * Advanced Python programming skills with experience writing clean, modular, testable, and production-ready code. * Strong SQL skills for data manipulation, transformation, and analysis. * Hands-on experience with MLOps practices and CI/CD pipelines. * Experience building scalable data wrangling, transformation, and aggregation pipelines. * Familiarity with dbt for data transformation workflows. * Experience working in Agile, cross-functional environments. * Excellent analytical, problem-solving, and stakeholder communication skills. * Ability to thrive in complex, fast-paced, and evolving business environments. What We Offer: * A dynamic and innovative workplace driving advancements in cutting-edge robotic technologies * The opportunity to collaborate with talented cross-functional teams on meaningful and impactful projects * Competitive compensation and comprehensive benefits package * A supportive culture that fosters continuous learning, growth, and professional development * Flexible hybrid working model for an optimal work-life balance * 25 days of annual leave to recharge and relax * An annual wellness allowance of 3,500 SEK to support your health and wellbeing
⚡️ What We Do 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. ✉️ Apply 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.
⚡️ What We Do 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 Business Developer. 👩💻 About The Role: You will play a key commercial role in scaling Flower’s Distributed Assets business by leading partnerships across retailers, BRPs, OEMs, and other asset-enabling partners within the flexibility market. You will drive the full commercial process from initial outreach to signed agreements, while shaping how partners adopt and integrate Flower’s flexibility offering. This role combines strategic influence with hands-on execution and is central to unlocking partner-driven capacity growth required for Flower’s long-term success. What You’ll Do: * Lead commercial engagements with retailers, BRPs, OEMs, and other asset-enabling partners within the flexibility market. * Manage the full lifecycle from first contact to signed partnership agreement * Build and maintain a high-quality commercial pipeline * Influence partner decision-makers and strategic direction * Identify and develop new business opportunities that strengthen the Distributed Assets portfolio * Collaborate closely with internal teams (Product, Tech, Partner Success, Trading) to ensure smooth onboarding and long-term success * Represent Flower externally and position our flexibility offering in the market Who You Are: * An experienced commercial professional with 8+ years in business development, partnerships, or B2B sales * Relevant academic background, such as a degree in engineering, economics, business, or a related field. * Skilled in managing complex stakeholder landscapes and long commercial cycles * Able to translate strategic goals into concrete commercial actions * Confident engaging with senior decision-makers on both strategic and operational topics * Experience in the energy sector, utilities, or related industries is a strong advantage * Fluent in both Swedish and English, with strong written and verbal communication skills. 📍 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. ✉️ Apply 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. 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.