26034 Mitarbeitende im FSJ oder BFD

10% of Europe's CO₂ emissions are caused by residential heating, and energy bills are out of control. Aira is here to change that. With our intelligent Aira Heat Pump at the heart, we're making the switch to clean energy-tech easier and more affordable. Helping Europe turn off gas and slashing energy costs one home at a time. Founded in 2022, and with 1000+ employees and counting, Aira is driving the clean energy revolution by providing homes with modern clean energy-tech solutions such as solar power, battery storage solutions and heat pumps. With a state-of-the-art production facility in Poland, an HQ in Stockholm, Sweden, and hubs across the UK, Germany, and Italy, Aira is well on track to install clean energy-tech into 5 million homes by 2034. About the role In the Energy Optimization team, we build optimization and ML models that actively control when the heat pump runs, when the battery charges or discharges, and when to export energy to the grid. We are now building new flexibility capabilities by coordinating fleets of homes to support the grid when it matters most. We’re now looking for a Data Scientist to join the team. You’ll lead projects end-to-end: shape the problem, build forecasting and optimization models, run experiments, and work closely with Product, Engineering and Design to ship customer-facing AI solutions. We value clear communication, thoughtful collaboration, and a constructive approach to problem solving. If you enjoy making measurable progress, turning messy real-world signals into decisions people can trust, and moving projects forward even when the path is not fully defined, we would love to hear from you. What you will be doing Translate real-world control problems into optimization models that minimizes customers’ energy bills. Develop and improve forecasting and decision-support models enabling optimal control schedules for customers’ home energy devices. Design and run experiments on real customer systems, evaluate impact, and turn insights into product decisions. Work closely with the team to bring models into production. Work across the full data stack, including data pipelines, feature engineering, deployment and monitoring. Lead initiatives from discovery to production impact. You set direction, align with stakeholders across product and engineering to deliver outcomes even when the path is not fully defined. Communicate clearly to technical and non-technical audiences, explaining trade-offs, uncertainty, and what is good enough to ship. What you bring to the team Several years of experience as a Data Scientist, Optimization Engineer, Applied Scientist, Machine Learning Engineer or similar. Strong mathematical and statistical modelling skills. Experience with time-series forecasting and machine learning, ideally applied to operational systems. Experience working in Python and with modern ML/optimization tooling and workflows. Solid Software Engineering fundamentals for deploying and maintaining ML systems in production. A pragmatic, product-oriented mindset: you optimize for real-world impact, not model complexity. Experience with cloud platforms (AWS, GCP, or Azure). Nice to have Experience with constrained optimization and applying it to real-world systems. Experience with energy systems or electricity market knowledge, especially flexibility and demand response. Experience with control system or physical systems modelling. What is in it for you? Gain hands-on experience in a fast-growing scale-up, with a supportive and inclusive culture, and career advancement opportunities. Collaborate with diverse teams across international markets and launch products globally. Develop and grow personally and professionally in an entrepreneurial-minded environment. Thrive in a dynamic, solution-oriented culture, tackling challenges and driving meaningful solutions that make a positive impact on the world. Influence the company's success, with a visible impact on product development and market growth. At Aira, We’re not just champions of next-generation energy, we’re champions in Diversity and Inclusion too. We believe that a diverse workforce sparks innovation and creativity and enables us to better serve our customers and communities. We encourage individuals from all backgrounds, cultures, and perspectives to join our team. We will never accept any form of discrimination and believe that together, we can drive a new era for our people and planet.

10% of Europe’s CO₂ emissions are caused by residential heating, and energy bills are out of control. Aira is here to change that. With our intelligent Aira Heat Pump at the heart, we’re making the switch to clean energy-tech easier and more affordable. Helping Europe turn off gas and slash energy costs one home at a time. Founded in 2022, and with 1200+ employees and counting, Aira is driving the clean energy revolution by providing homes with modern clean energy-tech solutions such as solar power, battery storage solutions, and heat pumps. With a state-of-the-art production facility in Poland, and HQ in Stockholm, Sweden, and hubs across the UK, Germany, and Italy, Aira is well on track to install clean energy-tech into 5 million homes by 2034. About the role  We are looking for an Engineering Manager to lead engineering teams in our Acquisition organization. Acquisition focuses on the entire customer journey from first contact through to completed installation - the teams that turn interest into happy customers with heat pumps in their homes. This role sits at the intersection of people leadership, technical guidance, and organizational alignment. You will ensure engineers have context, support, and a mandate to do their best work. You'll work closely with product managers, designers, and engineering peers to deliver solutions that matter. We are looking for a leader who speaks up, provides a critical perspective on decisions, and holds their ground. Not someone who waits for direction or avoids conflict. Someone who sees what needs doing and acts, taking initiative before problems escalate. You care about people - and that includes having difficult conversations and holding everyone, including yourself, accountable. You will be... Leading and developing engineers through regular one-on-ones focused on growth, blockers, and well-being. Supporting career development and addressing performance issues constructively. Creating psychological safety where engineers can raise concerns and influence decisions. Building a culture actively, not passively - engineers know their manager has their back personally, not just professionally. Working with PMs to ensure every project has clear problem statements and success criteria, so engineers know why they're building what they're building. Challenging work without clear value and helping teams push back when necessary. Navigating relationships with product leadership, PMs, engineering peers, and commercial leadership. Holding ground on engineering concerns. Providing honest feedback to leadership, even when uncomfortable. Collaborating on architecture and technical direction. Supporting modern practices, including AI- assisted development. Ensuring tech debt is tracked and championing ADRs for institutional memory. What you bring to the team Experience leading and developing software engineers, ideally in a product-focused company or scale-up environment Track record of building psychologically safe teams where people do their best work Ability to navigate ambiguity and make decisions with incomplete information Comfort with difficult conversations - giving feedback, addressing performance, saying no Strong collaboration skills across disciplines (product, design, commercial) Technical background sufficient to engage meaningfully with architecture decisions and engineering practices Experience with agile methodologies and modern development practices Nice to have Experience in a fast-paced scale-up or startup environment Familiarity with the energy sector or hardware/software integration Experience supporting teams through organizational change Background in full-stack or platform engineering What is in it for you? Gain hands-on experience in a fast-growing scale-up, with a supportive and inclusive culture, and career advancement opportunities. Collaborate with diverse teams across international markets and launch products globally. Develop and grow personally and professionally in an entrepreneurial-minded environment. Thrive in a dynamic, solution-oriented culture, tackling challenges and driving meaningful solutions that make a positive impact on the world. Influence the company's success, with a visible impact on product development and market growth. Enjoy our brand-new office at Norra Stationsgatan 93 in Stockholm. Conveniently located near public transport, with Sankt Eriksplan and Odenplan stations just a few minutes' walk away. At Aira, we champion next-generation energy as well as diversity and inclusion. We believe that a diverse workforce fosters innovation and creativity, enhancing our ability to serve customers and communities effectively. We welcome individuals from all backgrounds, cultures, and perspectives to join our team. Our commitment is to uphold equality and inclusivity, fostering a collaborative environment where everyone can thrive and contribute to a better future for our people and the planet. Ready to find true purpose in your work? Send your application today.