Senior Backend Software Engineer
Build the future of cards at Lunar – drive seamless and secure experiences!
At Lunar we are democratizing the power of money and changing the way we all bank, pay, and invest. Since starting in Aarhus in 2015, we've grown rapidly and are now a major player in the Nordics, with offices in Copenhagen, Aarhus and Stockholm 🚀
So who are we? Are we a tech company or a bank? Well, we're both, breaking free from the usual categories. Here, tech isn't just a cool add-on; it's the core of how we do things. With our own banking license, we go head-to-head with traditional banks. What sets us apart is the mix of tech and financial services, giving us the power to shake up a dusty industry that's ready for a change
As we continue our journey to becoming the best everyday bank in the Nordics, we are looking for a Senior Backend Software Engineer to build out our Cards universe at Lunar, creating seamless, secure, and delightful experiences for our users, so that we can shape the future of the banking experience.
As our new Senior Backend Software Engineer you will be part of Squad “Skylab”, reporting to Brian Nielsen. The team currently comprises 4 amazing individuals working in Aarhus who are focused on operating our cards universe including Issuing & management of new cards, processing of card transactions, card acquiring, card clearing and settlement within the broader Tech function in the “Core”-area, led by Kåre Kjelstrøm.
What will you do?
Take ownership of the core card domains, developing and maintaining our existing solutions, ensuring a solid card platform.
Integrate with third-party card processors and help ensure card acquiring & PCI-DSS certification.
Ensure highly available 24/7 card operations in Lunar - while continuously pushing the boundaries on how to engage our customers within the cards space.
Explore opportunities for bringing AI capabilities to further enhance our customer’s banking experience.
Curious about the Lunar culture? 💚
Everything at Lunar centers around our core - to challenge. It’s infused into our four values and guides us in how to work together, lead projects, and lead people to reach our mission. Our values aren't just words on a page - they're what make us who we are and shape the vibe of our culture. And trust me, we’re all about the vibe. For a longer read about our culture, click here.
We're excited to welcome everyone to apply for this impactful role! We can’t wait to follow up with talents who we believe are the best fit based on the following criteria:
Proven experience in a Senior Backend Software Engineering role or a similar position.
A background in working with cloud-based solutions.
A collaborative team player who is passionate about sharing knowledge and fostering the success of others.
Hands-on experience in agile environments, adept at adapting to shifting priorities and delivering incremental value.
It is not a requirement to know GO, but we do primarily code in it.
What we offer:
The opportunity to build out the future of Cards at Lunar, creating seamless & secure user experiences.
Work within a close-knit, cross-functional team of 4 engineers.
The chance to work on highly available and scalable services.
Explore opportunities for bringing AI capabilities to enhance customer banking experiences.
Are you ready to join the journey? Apply now and let’s find out more!
Check out Lunar’s careers page for information on benefits and our interview process.
While you hold on tight for us to get back to you, curious to see what we’re up to? Follow us on LinkedIn for business announcements and releases 📢, check out our Instagram for an inside scoop on what it’s like to work here 📸, and visit our blog for the latest tech and product insights! 📱🫰
Depending on the regulations in the country you will be employed, we will ask to see or obtain information about your criminal record
- Department
- Software Engineering & Development
- Locations
- Aarhus, Denmark
- Employment type
- Full-time

Aarhus, Denmark
About Lunar
We’re a 100% digital bank that helps you manage your money smarter.
Lunar is designed for you. We’re 100% digital, always accessible and we provide everything you need for your daily economy. That means smarter ways to manage your money, more control, easier investment tools, and no hidden fees.
Welcome to the future of banking.
Lunar was founded in 2015, and since then, we have employed more than 400+ skilled people in: Tech, Design, Business Development, HR, Compliance, Banking, Marketing, Communication, Support, and much more.
The journey is only getting started, this is your cue to join it. Apply now!
Senior Backend Software Engineer
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