Senior Backend Engineer: AI-Powered Payments Core

Lunar; Denmark; On-site; DKK 900,000 - 1,200,000; Full time

Benefits offered by this job

Pension

Health insurance

Enhanced parental leave

Job summary

Lunar is hiring a Senior Backend Engineer for our Money Core squads based in Aarhus to strengthen the domestic payments universe and power banking across the Nordics.

You will own critical banking domains, integrate with external partners, and explore AI-driven improvements while ensuring high availability and reliability for millions of users. Join a cross-functional team and help our engineers, designers, and product people work on problems that matter.

Qualifications

• 4+ years of professional backend development experience.
• Strong background in distributed systems and event-driven design.
• Experience with Golang is a big plus or willingness to learn.
• Ability to work in cross-functional teams and share knowledge.
• Clear communication and teamwork in a diverse environment.
• Finance or trading domain experience is a bonus.

Responsibilities

• Own critical banking domains and build reliable, scalable systems.
• Integrate with external partners to extend platform capabilities.
• Maintain high availability and resilience while improving customer experience.
• Explore AI-enhanced banking features from idea to production.
• Share knowledge and mentor teammates to foster growth.

Skills

Backend engineering

Distributed systems

Event-driven architecture

Golang

Collaboration

Communication

Finance/trading (bonus)

Job description

Lunar is hiring a Senior Backend Engineer for our Money Core squads based in Aarhus to strengthen the domestic payments universe and power banking across the Nordics.

You will own critical banking domains, integrate with external partners, and explore AI-driven improvements while ensuring high availability and reliability for millions of users. Join a cross-functional team and help our engineers, designers, and product people work on problems that matter.