Senior Back-end Developer

7 days ago

Garvargatan C Stockholm Sweden Helicon Technologies Full time 80,000 - 120,000 per year

What we doAt Helicon we build software that make a real difference. Our work has connected more than 15,000 buildings into one of Sweden's largest virtual power plants, launched award-winning cleantech startups, and helped cut tens of thousands of tons of CO₂ emissions.We're looking for a back-end engineer who wants to take ownership, work with talented colleagues, and solve problems that matter.Learn more about us -> Our recruitment processWe keep things simple and respectful of your time.No psychometric platforms such as Alva Labs.No take-home coding projects or free work.No AI-chatbots that you'll have to navigate around.Instead, you'll have a straightforward process:An interview to get to know each other.A technical step focused on real problem-solving.A final conversation about culture and ways of working.What you will doDesign and build back-end systems that process large volumes of energy and sensor data.Take services from prototype to production, ensuring they remain fast, reliable, and secure.Collaborate with colleagues and customers to solve complex challenges in energy and utilities.Share your knowledge and help shape how we build great software together.What you bringSolid back-end experience (ideally Python, 5+ years).Hands-on experience running deployments on AWS or Azure.Solid knowledge of Docker, Git, profiling, and performance optimization.Ability to build data-heavy applications that remain fast and reliable.Based in Stockholm with fluency in Swedish and English.What we offerProjects with real impact on sustainability and efficiency.A team of smart, curious colleagues who value learning and collaboration.Influence over both technology choices and engineering practices.A healthy balance between work and life with regular social activities.ApplicationIf this sounds like the right environment for you, we would love to hear from you. Even if you do not match every requirement, we encourage you to apply.

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