Senior Frontend Developer (React/Next.js) - BESS Cloud Platform
Join us to to build a cloud-native platform supporting the renewable energy transition.
Seeking an Experienced Frontend Developer to shape the future of smart energy
The European energy system is in the midst of a green transition, where battery energy storage systems will play a central role, and we need you to make it happen!
Capture Energy, a fast-growing Swedish company founded in 2023 and with 38 employees currently, aims to become a market leader in the Nordics in providing battery energy storage systems (BESS) for energy flexibility services - a market that is expected to experience significant growth in the coming years. With innovation at our core, we're building the digital infrastructure that powers the clean energy transition - starting with our next-generation platform, Capture Cloud.
As a small company today, we are able to operate very differently compared to the larger players on the market, which gives us a great competitive position. We are committed to bringing good energy to every setting where we operate: from our customers, partners, to our employees.
About The Role
We are looking for a Senior Frontend Developer to join our team in Stockholm and help build the user-facing applications of Capture Cloud. You will work with Next.js (v14+, App Router) and TypeScript in an NX monorepo setup, building secure, scalable, and user-friendly web applications. You’ll collaborate closely with designers, backend developers, and the Tech Lead to deliver high-quality solutions that combine technical excellence with great user experience.
This is an exciting role for a frontend engineer who wants to work with modern frameworks, shared component libraries, and CI/CD pipelines, while contributing to the future of clean energy.
Key Responsibilities
- Design, develop, and maintain frontend applications using Next.js, TypeScript, HTML, and CSS.
- Implement and extend the backend-for-frontend (BFF) layer for authentication, API calls, and data transformations, hosting the applications in Azure using various Azure cloud services.
- Contribute to and maintain the shared component library (documented in Storybook) to ensure consistency and reusability across applications.
- Collaborate with backend developers, product managers, and designers to deliver secure, high-performing, and user-friendly applications.
- Translate Figma designs into high-quality, responsive UIs.
- Work with shared packages (utilities, API clients, modules) to avoid duplication and maintain a single source of truth.
- Participate in code reviews, mentor junior developers, and promote frontend best practices.
- Ensure applications meet high standards of performance, accessibility, and security.
- Contribute to CI/CD pipelines (build/test/lint, Docker images, deployment).
Skills and Qualifications
- 7+ years of professional frontend development experience.
- Strong expertise in React and Next.js (experience with Next.js v14+ App Router is a big plus).
- Proficiency in TypeScript and modern JavaScript (ES6+).
- Familiarity with backend-for-frontend (BFF) patterns, secure API calls, and data handling.
- Experience with Azure cloud services such as Functions, Container Apps, Key Vault, Application Insights, SignalR.
- Experience with shared component libraries, graph tooling such as Carbon Design, and tools like Storybook.
- Strong understanding of frontend architecture, design systems, reusable component patterns, and real-time communication (web sockets, server-sent events)
- Ability to translate Figma designs into production-ready UI with attention to detail.
- Knowledge of CI/CD pipelines, Docker, and frontend testing.
- Strong problem-solving skills, with a focus on performance and scalability.
- Familiarity with authentication/authorization flows in frontend apps (OAuth or OpenID Connect).
- Experience with accessibility standards (WCAG) is a plus.
- Experience with energy, IoT, or data-heavy platforms is a plus.
- Fluent in English.
Why Join Us?
As a part of our team, you will have the opportunity to work in an environment that encourages personal and professional growth. We are committed to supporting our employees, offering opportunities for training and progression to those who show dedication and enthusiasm in their roles. Our team is our most valuable asset, and we strive to ensure each member feels valued, supported, and inspired.
We offer
-
A chance to design and build the user-facing applications for Capture Cloud.
- Hands-on work with modern frontend technologies (Next.js, TypeScript, Storybook).
- An inspiring workplace where people are at the heart of everything we do, driving us toward our vision
- Competitive salary
- Maximized wellness contribution
- Pension and health insurance
Application Process
If you believe you have the responsibility, independence, and drive we are looking for, please submit your CV and a covering letter detailing your suitability for the role. We welcome applicants from all backgrounds and are committed to creating a diverse and inclusive workplace.
We look forward to hearing from you and possibly welcoming you to our team.
About the company
Capture Energy, established in 2023, aims to be a major player in large-scale battery energy storage systems for flexibility services. We distinguish ourselves by providing turnkey solutions with smart services.
Visit our website for more information: www.captureenergy.eu
- Department
- Product & Technology
- Role
- Developer
- Locations
- Stockholm
- Remote status
- Hybrid
Colleagues
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.
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