Reliability Engineer / Maintenance Engineer - life science medtech

Residential heating is one of Europe’s largest sources of CO₂ emissions, while energy prices remain unpredictable for many households. At Aira, we’re on a mission to change that. Founded in 2022 and now employing more than 800 people, we develop and install clean energy solutions—including heat pumps, solar panels, and battery systems—powered by intelligent technology that helps homes operate more efficiently. Our goal is simple: to help households reduce both their carbon footprint and their energy costs. With headquarters in Stockholm, Sweden, a state-of-the-art manufacturing facility in Poland, and hubs across the UK, Germany, and Italy, Aira is rapidly scaling to bring clean energy technology to 5 million homes by 2034. About the role  In the Energy Optimization team, we build optimization and machine learning systems that help control when heat pumps run, when batteries charge or discharge, and when it makes sense to export energy to the grid. We are also building new flexibility capabilities by coordinating fleets of homes to support the grid when it matters most. We’re looking for a Machine Learning Engineer to join this product team. You’ll work on models and systems that turn messy real-world signals into reliable decisions for customers’ homes. This includes building and improving forecasting and optimization models, productionising them, monitoring their performance, and iterating based on real-world outcomes. You’ll work closely with Product, Engineering, Design, and other teams to ship customer-facing intelligence that is reliable, understandable, and valuable. We value clear communication, thoughtful collaboration, curiosity, and a pragmatic approach to problem-solving. If you enjoy turning ML models into production systems that create measurable customer impact, we would like to hear from you. What you’ll be doing * Build and improve ML and optimization models that power customer-facing energy optimization features. * Work on time-series forecasting, scheduling, and decision models for heat pumps, batteries, solar, tariffs, weather, and customer behaviour. * Productionise and own models end-to-end, including deployment, monitoring, reliability, and iteration based on real-world outcomes. * Run experiments on real customer systems, evaluate impact, and turn results into product decisions. * Contribute to initiatives from discovery to production impact, helping define success metrics and align with stakeholders. * Communicate clearly with technical and non-technical audiences, explaining trade-offs, uncertainty, model behaviour, and what is good enough to ship. What you’ll bring to the role * Experience building ML, data, or optimization systems that are used in real-world products. * Good programming skills in Python and software engineering fundamentals. * Experience taking models beyond notebooks, including evaluation, testing, deployment, or monitoring. * Experience with cloud platforms such as AWS, GCP, or Azure. * Comfort working with real-world data, including ambiguity, imperfect signals, and changing requirements. * A pragmatic, product-oriented mindset: you care about measurable customer impact, not model complexity for its own sake. * Clear communication skills and the ability to collaborate well in cross-functional teams. Bonus points if you have * Experience with energy systems, electricity markets, demand response, or flexibility. * Experience with constrained optimization, control systems, 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. * 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 firmly 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.

SAVR is a fast-growing Swedish fintech company on a mission to reinvent investing. We empower investors with a platform that offers lower fees, greater transparency, and a radically improved experience. We’re not just building another investment service — we’re reimagining how financial products should work for people, not just institutions. As part of our ambitious, innovative and curious team, you’ll help shape the future of investing in Sweden and beyond. THE ROLE As a Senior Platform Engineer at SAVR, you will be part of our tech organization helping build and evolve the next generation investment platform. Your primary focus will be on designing, improving and operating our cloud platform, enabling our engineering teams to build, deploy and run services efficiently and securely. While this role is centred around infrastructure and platform engineering, you'll occasionally contribute to backend services and integrations where it creates the most value. You'll collaborate closely with Software Engineers, Data Scientists, Product Designers and Product Managers to build scalable solutions and continuously improve our developer experience. Our infrastructure is built on AWS and managed through Terraform, with CI/CD powered by GitHub Actions, alongside some GCP and a handful of third-party services. Our services are built in Kotlin, PHP and Python and run on ECS, with data in Aurora, PostgreSQL and Snowflake. As we continue to grow, so does the need for a cloud platform that is reliable, secure, observable and enjoyable to build on—and that's where you come in. YOUR MISSION * Own and evolve our AWS platform, including networking, infrastructure as code, deployment pipelines, observability, backups, cloud governance and cost optimization. * Drive technical improvements across cloud architecture, CI/CD, automation, developer experience and operational tooling, reducing toil through smart tooling and abstractions. * Collaborate closely with engineering teams to build cloud-native solutions, integrations and infrastructure that enable product development. * Support backend teams with infrastructure expertise and occasionally contribute to application development when needed. * Monitor, troubleshoot and optimize cloud environments for performance, reliability, security and cost efficiency. * Foster our learning culture by actively participating in feedback sessions, both receiving and providing constructive feedback on code and infrastructure changes. YOU’LL THRIVE IN THIS ROLE IF YOU... * Are a Platform Engineer or Software Engineer with strong experience building and operating cloud platforms. * Have solid experience with AWS, Terraform, CI/CD, Docker, ECS and/or EKS, and observability tooling. * Have 5+ years of professional experience designing, building and operating cloud-based systems in production environments. * Enjoy working in a startup environment where you can take ownership, solve a wide range of technical challenges and collaborate across disciplines. * Care about automation, operational excellence and building reliable systems that scale. * Have some backend development experience and enjoy working closely with application engineers. * Are fluent in English and either hold Swedish citizenship or a valid EU work permit (visa sponsorship is unfortunately not available). OUR CULTURAL DNA 🧠 Open-minded – we embrace new ideas, diverse perspectives, and continuous learning 🚀 Bold – we take smart risks, move fast, and aren’t afraid to fail forward 🤝 Honest – we value transparency, feedback, and doing the right thing We’re a startup, so things can be a little messy — and that’s part of the thrill. If you thrive in building as a team and handling uncertainty, you will fit right in.  WHAT’S IN IT FOR YOU You’ll join a product- and design-driven company where your work has real impact. We keep things lean, move fast, and genuinely care about the experience we deliver — for customers and for each other. Here’s what we offer: 💻 Top-tier work gear 💰 Competitive salary 🏃‍♀️ Generous wellness allowance 🤒 Insurance package 🌱 Occupational pension and long-term savings support 🏢 Office-first approach to foster collaboration and quick decision-making — with flexibility when you need it (4+1) 🥗 Stocked pantry, plus regular social gatherings and wellness activities to keep energy and culture high OUR COMMITMENT TO DIVERSITY SAVR is an equal opportunity employer. We welcome people from all backgrounds, identities, and experiences. We believe diverse teams build better products and are committed to creating an inclusive workplace where everyone can thrive. READY TO JOIN US? We’d love to hear from you. Apply now or reach out with any questions — and let’s build something meaningful together.