Software Engineer

Software Engineer About the job At Capture Energy, we’re transforming our automation architecture and are looking for a Software Engineer – Operational Technology & Cloud Integration to build core services on our Capture Controller while ensuring seamless data flow to our cloud infrastructure. You’ll create lean, maintainable applications and clean interfaces between our operational technology and cloud systems. We primarily develop in Go , but we’re equally interested in strong Python engineers with BESS or energy experience who are willing to transition to Go. The right domain expertise, learning ability and hunger matter more than years on a resume. In this role, you’ll be a critical integration point between our automation systems and cloud platform, working closely with both our Senior TwinCAT Engineer and Cloud team to evolve our architecture. You Will Develop applications running on the Capture Controller to handle energy optimization, state management and control logic Communicate with TwinCAT via ADS (Automation Device Specification) to coordinate PLC operations and sensor data Design and implement data schemas and APIs for reliable, bidirectional data exchange between the controller and cloud services Architect a clean separation between real-time PLC functions and business logic in the controller application Work closely with both the TwinCAT engineer on the OT side and the Cloud team on the IT side to define data contracts and integration points Build robust error handling, logging and monitoring for production control systems We Expect You To Have solid production experience in Go or Python . You’ve shipped code that matters and understand what can go wrong in production Have strong systems-level thinking across state management, concurrency, real-time data handling and distributed systems Have hands-on experience with energy systems, BESS or battery management . This is critical and the hard part to teach Have experience with industrial protocols or hardware integration, even if not ADS specifically Be comfortable working across both operational technology (OT) and IT infrastructure layers Have a genuine curiosity about how things work and the drive to learn and ship in a fast-moving environment If Python is your primary language, have a demonstrated ability to learn new languages and a genuine interest in transitioning to Go as your primary development language Be fluent in English, both written and spoken Nice To Have Existing Go experience Familiarity with Beckhoff TwinCAT or other PLC ecosystems Experience with ADS, OPC UA, Modbus, MQTT or similar industrial communication protocols Background in embedded systems, IoT or software running close to physical equipment Knowledge of battery energy storage, grid services, energy optimization or similar domains Experience with data pipelines, message queues or time-series databases This is a permanent full-time position based in Stockholm (Sweden) or Fredrikstad (Norway) , with an on-site setup and flexibility to work from home several days per week. For Python applicants transitioning to Go, you can expect structured onboarding with pair programming, mentoring and clear Go adoption milestones. We’ll invest in your ramp-up. In return, we ask that you commit to the transition. We offer competitive salary and benefits based on experience and location and are prepared to offer market rates for the right candidate in either Stockholm or Fredrikstad. Ready to apply? Send us your CV and a brief note about your experience with control systems, energy systems, cloud integration or similar production-critical development. If you’re a Python engineer, tell us about your learning track record and why you’re interested in Go. We look forward to hearing from you. Department Technology Locations Fredrikstad, Stockholm Remote status Hybrid Fredrikstad Stockholm Work place and culture We bring good energy! Capture Energy is a Nordic-based company with offices in Gothenburg, Stockholm, Fredrikstad, Luleå, and Odense. Our team consists of experienced professionals from renewable energy and flexibility services backgrounds. Our distributed Nordic team meet in person at least once every quarter at different locations. Some of us enjoy group morning runs before the meetings. We value mutual support and seek individuals who are humble, positive, and can turn challenges into opportunities. While we are a distributed team with a big part of our work being done through digital platforms, we value on-site collaboration and we expect you to be in our offices during the majority of your working time. About Capture Energy We are Capture Energy, an energy storage solutions company dedicated to bringing good energy to our customers. Our impact goes beyond megawatts; it drives progress and powers our customers’ businesses. Specialising in delivering end-to-end energy storage solutions, we enable forward-thinking customers to seize opportunities in the flexibility market rapidly, safely, and sustainably. We emphasise on building lasting relationships with our customers, service partners and aggregators by offering best-in-class service. Our insights into the flexibility market and the advantages of energy storage solutions are shared freely, ensuring informed decisions and successful outcomes. Our Nordic team of tech-savvy business professionals and business-minded engineers is here to guide you seamlessly from initial planning to revenue generation – one megawatt at a time. Founded in 2023 Coworkers 38 Turnover 22 MEUR (2024)