Backend Engineer

The Hub/Danske Bank; København; On-site; DKK 900,000 - 1,300,000; Full time

Benefits offered by this job

4 days in the office

State of the art equipment

Pension

Health insurance

Enhanced parental leave

Job summary

Lunar in Copenhagen is seeking a Senior Backend Engineer to design and deliver complex distributed systems, automating Financial Crime Control at scale and applying AI tooling across the stack.

Join a fast-moving team that values autonomy, mentoring, and cross-functional collaboration, with cloud experience and Go skills as assets in our evolving tech foundation.

Qualifications

• Minimum of 3 years backend experience.
• Expertise in event-driven architecture and distributed systems.
• Experience with cloud technologies.
• Go experience is a plus.
• Strong interest in AI and OpenAI solutions.
• Excellent collaboration and communication across teams.

Responsibilities

• Design and deliver complex distributed systems at scale.
• Guide teams in AI tooling as it grows in the stack.
• Lead system design discussions and mentor engineers.
• Partner with cross-functional teams to integrate solutions.
• Work autonomously in an agile environment and improve processes.

Skills

Backend development

Event-driven

Distributed systems

Cloud technologies

Go

AI interest

Collaboration

Communication

Job description

Banking hasn't changed much in decades. We're changing that. One product at a time.

Lunar is a Nordic challenger bank building the future of financial life with AI at the core. Our engineers, designers, and product people work on problems that actually matter. Making money simpler, smarter, and more rewarding for millions of people across the Nordics.

Fully licensed and founded in 2015, with offices in Copenhagen, Aarhus and Stockholm.

We move fast, we build with purpose, and we're just getting started.

As our new (Senior) Backend Engineer you'll join a team based in Copenhagen, reporting to Eugene, working to automate manual and repetitive tasks in Financial Crime Control at scale, across our broader Technology function.

What will you do?

• Design and deliver complex distributed systems that improve Financial Crime Control efficiency, anticipating technical risks and dependencies before they become blockers.

• Guide teams in the responsible and effective use of AI tooling as it becomes a bigger part of our stack.

• Lead technical discussions on system design and implementation, and mentor other engineers — a bigger part of the role as you grow into its senior scope.

• Partner with teams across the organization to help them build and integrate new solutions, working across domains to solve data aggregation and integration challenges, and drive projects with minimal support.

• Work with a high degree of autonomy in an agile environment, and evaluate team processes to identify and implement high-impact improvements.

What are we looking for in you?

• Minimum of 3 years of backend experience, with a proven track record of designing and delivering complex systems at scale.

• Expertise in event-driven architecture and distributed systems, balancing trade-offs to ensure system reliability and performance.

• Experience with cloud technologies.

• Experience with Go is a significant advantage.

• A strong interest in AI and familiarity with solutions like OpenAI.

• Excellent collaboration and communication skills, with the ability to work effectively across different teams and domains.

What you get.

• 4 days in the office. We're a team that builds together, thinks together, and moves together. Showing up is part of how we work.

• State of the art equipment. The newest computer, monitor, mouse, and keyboard. We want you to do your best work without anything slowing you down.

• Pension, health insurance, and enhanced parental leave. From your financial future to your family moments. We've got you covered.

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 .

Depending on the regulations in the country where you will be employed, we will ask to see or obtain information about your criminal record. Please note that our employment is conditional upon you not being registered in RKI (Ribers Kredit Information).

We welcome applications from candidates of all backgrounds. If you need any adjustments during the recruitment process, please let us know