Senior Internal Tools Engineer - Scale Core Platforms

Flatpay; København; On-site; DKK 900,000 - 1,100,000; Full time

Benefits offered by this job

free slush ice

on-site gym

gamer room

Job summary

Flatpay is expanding its Copenhagen engineering team to scale our internal platform and tooling that power our European growth. You will own and drive architectural decisions for scalable backend systems and APIs, mentoring engineers and delivering high-quality solutions.

Join a fast-growing company building CRM, sales tools, and operations software that enable our commercial organization to operate efficiently at scale across Europe.

Qualifications

• 5+ years of professional software engineering experience.
• Strong experience designing and operating distributed systems.
• Demonstrated ability to lead technical projects involving multiple engineers and influence architectural decisions.
• Experience building scalable backend platforms and APIs.
• Comfortable navigating ambiguity with pragmatism and helping shape new products and systems.
• Strong communication and collaboration skills.

Responsibilities

• Design and deliver scalable, maintainable, and high-quality solutions that drive business impact.
• Enhance and evolve core internal systems to improve reliability, performance, and user experience.
• Continuously optimize CI/CD pipelines and infrastructure to accelerate delivery and increase stability.
• Collaborate closely with internal stakeholders to shape ideas, define requirements, and turn them into actionable plans.
• Lead cross-functional projects from concept to successful delivery.
• Mentor and support team members, fostering technical growth and engineering excellence.
• Drive architectural improvements and champion best practices to ensure the platform scales for the future.

Skills

Distributed systems

Project leadership

Backend design

APIs

CI/CD

Team mentoring

Communication

Tools

Docker

AWS

Spring Boot

MySQL

GitHub Actions

Job description

Flatpay is expanding its Copenhagen engineering team to scale our internal platform and tooling that power our European growth. You will own and drive architectural decisions for scalable backend systems and APIs, mentoring engineers and delivering high-quality solutions.

Join a fast-growing company building CRM, sales tools, and operations software that enable our commercial organization to operate efficiently at scale across Europe.