Senior Fullstack Developer (f/m/d)

Axpo is driven by a single goal – delivering a sustainable future through innovative energy solutions. It is the largest producer of renewable energy in Switzerland and an international leader in energy trading, as well as offtake of solar and wind power. While using state-of-the-art technology, Axpo introduces innovations to meet the changing needs of its customers in more than 30 countries across Europe, North America, and Asia. Axpo has been operating in the Polish market for over 20 years now. It employs about 270 people and is one of the largest independent offtakers of green energy. Customers in Poland benefit from tailor-made offers for the purchase and supply of energy and gas based on structured and long-term contracts. Axpo Polska also provides services to more than 25,000 companies from the small and medium-sized enterprises segment and, since April 2020, it has only been offering energy with a certified origin from renewable energy sources. While supporting energy transition in Poland, the Company also implements large-scale photovoltaic projects. Currently we are looking for: Senior Fullstack Developer  Join us to build high‑impact, modern fullstack solutions that shape the energy transition. Drive innovation, lead technical direction, and grow in a cutting‑edge engineering environment. Your responsibilities: • Lead the design, development, and maintenance of fullstack applications • Own the entire application lifecycle from architecture to deployment and monitoring • Drive frontend development with Next.js and TypeScript, focusing on performance and UX • Build and maintain backend services and microservices in Python • Implement high‑quality RESTful APIs • Integrate and operate GCP services and manage infrastructure with Terraform • Design and support event‑driven systems with Kafka • Ensure robust, automated, and secure CI/CD pipelines • Guide architectural decisions and maintain technical consistency • Mentor team members and perform code reviews • Champion best practices in testing, security, and scalability • Participate actively in Agile ceremonies and planning • Collaborate with stakeholders to align technical solutions with business needs • Stay up to date with modern technologies and industry trends Our requirements: • Master’s degree in Computer Science or related field, or equivalent experience • Leadership mindset with strong ethics, collaboration, and innovation orientation • Expert experience with Next.js, TypeScript, and modern frontend architecture • Strong backend development experience in Python (APIs, microservices, FastAPI/Flask/Django) • Experience with automated testing and Python performance best practices • Solid experience with GCP, Terraform, Docker, and Kubernetes • Proficiency in Git and GitHub workflows • Experience building event‑driven systems with Kafka • Hands‑on experience with CI/CD and automated testing • Familiarity with Sentry, Elastic Stack, and GCP Cloud Logging • Ability to lead technical discussions and document decisions clearly • Strong understanding of security, performance, and scalability principles • High ownership, initiative, and strategic thinking • Excellent communication and leadership skills • Adaptability, resilience, and commitment to mentoring • Ability to inspire and influence others with a long‑term vision • Fluency in Polish and English What we offer: • Development in an international company that is shaping the face of the energy market. • A progressive medical care package that takes care of your health and well-being. • Co-financing of the Multisport card, enabling the use of various forms of physical activity. • Foreign language classes during working hours. • Flexible working hours and the possibility to work in hybrid mode. • An office with a beautiful view, located in the city center. • A motivated team, ready to guide you through your daily challenges