Jobs in Hamburg, United States

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Open-Xchange

Olpe, Germany

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6f0dc8ff60ff

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24.08.2025

08.10.2025

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Our Mission:

Are you a motivated experienced person, used to working in an international multi-cultural environment, who really wants to make a difference in the open-source world?
At PowerDNS, part of Open-Xchange, we decided to leave dead-end jobs where you don't make an impact and offer passionate experts the opportunity to be part of an international team that connects the world and millions of people. By developing and delivering open-source DNS software, we ensure that one of the foundational protocols underpinning the Internet stays free for anyone to use. And by providing services and additional closed-source software tailored to large-scale telco and enterprise use-cases, we ensure a viable and sustainable business that can continue to deliver on our principal goal of a free and open Internet.
We believe it’s crucial to work in an environment where people feel valued, are energized by their work and deliver added value – to colleagues, to our community, and to our customers.

Discover what Open-Xchange offers you:

Our non-hierarchical organization not only ensures much closer collaboration with customers and community, it also provides the best possible work environment for every one of us.

We believe that everyone at OX will always do what is best for the company. The full potential for high performance can only be realized within an organizational structure that enables each individual to work with clear focus and to take full responsibility for their tasks.

At OX we focus a lot on mastery. It influences our decision-making processes and is a great part of how we look at professional development.
We believe in openness and diversity, which are crucial to OX’s success. Different opinions, ways of thinking, and cultures enrich us and help us to better understand the bigger picture.

At OX you'll be working with the whole tech stack, using open-source technology, and playing your part in the fight against big, dominant companies to keep the Internet open.

Team info:

We are the PowerDNS team and we are looking for a new team member to join us. Offering flexibility in both hours (full-time or part-time) and location (remote and in-office), we are currently looking for an experienced developer with a particular affinity for Go.
PowerDNS develops and maintains a suite of both open-source and closed-source DNS products. As a Software Developer for PowerDNS you will use your knowledge and experience to collaboratively design and implement the future evolution of our Kubernetes-based DNS-orchestration solution and a high-performance DNS zone data syncer. These solutions are key to deploying cloud-native DNS architectures in large telco environments and are designed for scalability, given the importance of high-performance, low-latency, and highly-available DNS to the subscriber user experience and network infrastructure management.

The PowerDNS main office is located in The Hague, but you are free to work remotely from home in the Netherlands or one of the other European countries where Open-Xchange has entities. Check out one of these Go-based software modules for a taste of the type of software we build: https://github.com/PowerDNS/lightningstream

• You’ll work closely with the lead developer of our Kubernetes-based, cloud-native DNS-orchestration solution (Cloud Control), as well as taking the lead in designing and developing features for our LMDB-to-S3 DNS zone data syncing solution (Lightning Stream).
• You’ll work to ensure the solutions work effectively in high-volume, low-latency recursive and authoritative DNS service environments, delivering high availability and performance.
• You’ll design and implement smart solutions to scalability problems.
• You’ll make monitoring and alerting first-class citizens in our solution.
• You'll work with Product Management and other developers in the team to design future architectures and determine the best approach for implementation.
• You'll ensure that nothing is done twice by automating everything.
• You'll support our Sales Engineering and Support teams with technical questions or issues from customers.
• You'll continuously improve yourself and the products by investigating alternatives and new technologies.

This is the tech stack you'll be working with:

• Programming languages: Mainly Go; Python (Django) and Lua are a plus.
• Network protocols: DNS, TCP, UDP, TLS, IPv4, IPv6
• Databases and messaging: LMDB and NATS; Postgres and Redis are a plus.
• Kubernetes and Helm

Your background:

• You already have several years of experience in software development in Go for back-end systems with high performance requirements.
• You have experience with Kubernetes (including Controllers/Operators) and Helm.
• You have a strong focus on building resilient software for reliable deployments.
• You are able to work collaboratively to define requirements, design and implement complex systems, communicating proactively with other stakeholders.
• You have knowledge and experience with network protocols such as TCP, UDP, IPv4, IPv6, and DNS.
• You have an affinity with CI/CD workflows and tools.
• You possess troubleshooting skills from code to systems to network and everything in between.
• You can effectively communicate in English verbally and in writing across all levels.
• You are a team player and you love to share your knowledge and learn from others.
• You would like to work in an environment without a formal hierarchy and are ready to take ownership for your work.
• You are motivated and creative, with a passion for connecting the world through Open Source technology and promoting digital sovereignty.

This is what you get at Open-Xchange:

• The flexibility to work 100% remotely ensures a work environment that suits you best.
• Flexible working hours that allow you to successfully combine your home and family responsibilities with work.
• Competitive salary that reflects your skills and experience — no matter where you live.
• Stay up to date with latest tech, by working on modern cloud software in a dynamic, international team.
• Sharing thoughts is part of our DNA so expect Workshops and Team Events.
• Benefit from time off for volunteer work.
• We provide financial relief through corporate benefits and a subsidy for ergonomic chairs and desks.
• We can discuss further location-related benefits together in an initial talk.

Join the team:

Be ready to shape your personal future, and the future of millions of people.

Join us in our fight for an open internet and deliver added value! All you need to do is get in touch, so click the ‘apply now’ button, fill the form and be in contact.