Lunar Tech Stack

Digital challenger bank serving 1M+ customers across the Nordics

Financial Services Copenhagen, Capital Region of Denmark 501–1,000 employees Founded 2015 Public Company

Lunar operates a multi-country retail and business banking platform built on polyglot infrastructure (Go, Kotlin, Java, C#) across AWS, GCP, and Azure with Kubernetes orchestration. The company is engineering-heavy and security-focused, with active hiring in infrastructure and platform roles while adopting Cursor and migrating away from Jenkins—typical of a maturing fintech moving toward faster development velocity. Core pain points cluster around 24/7 payments reliability, legacy process replacement, and partner clearing integrations, all reflected in their project roadmap.

Tech Stack 30 technologies

Core StackGo Kotlin Java C# AWS Kubernetes PostgreSQL CockroachDB Kafka RabbitMQ Looker OpenAI Grafana Prometheus Terraform Cursor Docker Intune GCP Azure iOS Android SQL Microsoft Defender for Endpoint Kandji Wiz Microsoft Defender Excel Business Central

AdoptingCursor

ReplacingJenkins

What Lunar Is Building

◆Challenges

Ensuring compliance and security by default
Highly available 24/7 domestic payments operations
Integrating with partners to access clearings
Optimizing conversion and trust
Replacing legacy tasks and processes
Automating manual repetitive tasks
Reducing cognitive load
Data governance
Expanding footprint
Expanding market share in sweden

▲Active Projects

Customer loyalty, benefits, and tiers services
Build out the future of domestic payments
B2c and b2b growth strategy
Partner clearing integration
Invisible resilience
Capacity reclamation
Replace legacy tasks and processes
Transaction monitoring and automated alerting system
Real-time threat detection system
Managing the approval and onboarding process for new business customers

Hiring Activity

Accelerating55 roles · 30 in 30d

Department

Engineering

Product

Ops

Security

Sales

Data

Legal

Finance

Seniority

Senior

Mid

Principal

Manager

Junior

Lead

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About Lunar

Lunar is a publicly traded digital bank founded in 2015 and licensed in 2019, now serving over 1 million private and business customers across Denmark, Sweden, and Cyprus. The product spans retail banking (debit cards, payments, investments) and business banking, with recent focus on loyalty/benefits tiers, domestic payment rails, and SMB onboarding workflows. The organization of ~450 people is structured around core functions: engineering dominates the hiring pipeline, followed by product and operations, with dedicated security and data teams reflecting the regulatory and operational complexity of banking infrastructure.

HeadquartersCopenhagen, Capital Region of Denmark

Company Size501–1,000 employees

Founded2015

Hiring MarketsDenmark, Cyprus, Sweden

Frequently Asked Questions

What tech stack does Lunar use?

Go, Kotlin, Java, C# for application code; AWS, GCP, Azure for cloud; PostgreSQL and CockroachDB for data; Kafka and RabbitMQ for messaging; Kubernetes for orchestration; iOS and Android for mobile clients.