> Markdown version of [/jobs/ext/362181-backend-engineer](https://www.wearedevelopers.com/jobs/ext/362181-backend-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Backend Engineer - **Company:** Fastned - **Location:** Amsterdam, Netherlands - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Amazon Web Services, Relational Databases, Mobile Application Software, PostgreSQL, Large Language Models, Backend, Kotlin, Event Driven Architecture, Containerization, Kubernetes, Apache Kafka, React Native, Restful APIs, Docker, Microservices - **Published:** June 20, 2026 - **Apply:** https://fastned.recruitee.com/o/senior-backend-engineer-4 ## About the Role In order to be successful in this role you bring along a highly entrepreneurial mindset - we want our employees to 'Think like a founder'. You thrive on taking ownership of the engineering that creates a best-in-class user experience., * You have 7+ years of professional backend experience, with strong hands-on Kotlin and/or Java and experience operating microservices in production. * You've worked with AWS or other cloud platforms, containerization/orchestration (Docker/Kubernetes) and relational databases (e.g. Postgres). * You're experienced building microservices with RESTful web services, and comfortable with event-driven architectures and tools like Kafka. * AI-first instincts: you reach for AI tooling as a natural part of your workflow, with good judgment about its strengths, limits and risks. * You demonstrate great communication and coaching skills and love working in a team; tech-lead experience is a strong plus. * Proficiency in English is mandatory. * You have a strong affinity with the energy transition and Fastned's mission. * Nice to have: hands-on OCPP (1.6 and/or 2.x); e-mobility, MSP/CPO models or standards such as OCPI; high-throughput, real-time event-driven systems; mobile app backends (e.g. React Native); or building with LLMs/agents in production. ## Description With your in-depth knowledge of Kotlin, Spring Boot (microservices), AWS, Kubernetes, Kafka, SQL, GitLab CI/CD and REST APIs, you create the scalable, high-availability services that ensure our customers can charge at any time. We're now evolving the charging stack to integrate with the MSP (Mobility Service Provider) proposition Fastned is building in-house - so there's a lot to build. As a senior engineer you'll set the technical bar and act as a key sparring partner for your team of fellow Backend Engineers, an Engineering Manager and a Product Manager. Your overall responsibilities include * Designing, developing, testing and reviewing reusable, maintainable and scalable code for Fastned's charging platform and infrastructure; * Delivering core charging milestones: the migration from OCPP 1.6 to OCPP 2.x, Autocharge and Plug & Charge, and our shift to advanced maintenance using granular data and ML/AI modelling; * Working AI-first: using AI-augmented engineering (Claude Code, agentic workflows and AI tooling) as a natural part of how you design, build, test and review - with judgment for where AI is a multiplier and where humans stay in the loop; * Overseeing technical development from ideation to deployment, and taking operational responsibility for what you build (monitoring, alerting, incident analysis); * Helping improve engineering methodologies and best practices, and mentoring others as a tech lead in the Charging team. ## Related Videos - [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Remote Driving on Plant Grounds with State-of-the-Art Cloud Technologies](https://www.wearedevelopers.com/videos/251-remote-driving-on-plant-grounds-with-state-of-the-art-cloud-technologies) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Why Kotlin is the better Java and how you can start using it](https://www.wearedevelopers.com/videos/661-why-kotlin-is-the-better-java-and-how-you-can-start-using-it) ## Related Articles - [Best Companies in the Netherlands: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/193-best-companies-in-the-netherlands-top-25-companies-in-2023) - [How to land a developer job in Amsterdam](https://www.wearedevelopers.com/magazine/36-how-to-land-a-developer-job-in-amsterdam) - [How to Find Tech Jobs in Amsterdam](https://www.wearedevelopers.com/magazine/279-how-to-find-tech-jobs-in-amsterdam) - [The Best Tech Hubs in Europe: 5 Best Cities For Software Engineers](https://www.wearedevelopers.com/magazine/246-the-best-tech-hubs-in-europe-5-best-cities-for-software-engineers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Software Developer Salary in The Netherlands [2023]](https://www.wearedevelopers.com/magazine/217-software-developer-salary-in-the-netherlands-2023)