Senior Software Engineer (Integrations)

Formalize ApS

Aarhus

On-site

DKK 691,920 - 803,520

Full time

14 days+

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Benefits offered by this job

Thorough onboarding

Annual Global Summit

Continuous development support

Job summary

A tech-focused company in Aarhus is looking for a Senior Software Engineer who will drive the integration logic for their global platform. In this role, you will tackle complex API challenges and collaborate with a supportive team. With a competitive salary starting from 62,000 DKK, you will benefit from a clear career growth structure. The suitable candidate will have experience with modern tech stacks, including PHP and Angular, and a passion for learning and collaboration.

Qualifications

Professional experience in software engineering, especially web applications.
Strong fundamentals in object-oriented programming and design patterns.
Experience with PHP and Angular frameworks.

Responsibilities

Implement integration patterns, ensuring API framework robustness.
Develop scalable features for the integration marketplace.
Provide technical feedback during code reviews.

Skills

Object-oriented programming

Domain-Driven Design

System design

Technical communication

Tools

Angular

PHP

PostgreSQL

Redis

AWS

Job description

Implement complex API patterns, handle logic-heavy integrations & ensure global scale for our platform.
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About the Role & Team

We are looking for a Senior Software Engineer for our Integrations team. In this role, you aren’t just building connections; you are driving the quality of our integration logic. You will handle complex technical challenges of our marketplace, ensuring our patterns are robust enough for global scale while acting as a key sparring partner for the rest of the team.

Our team is curious, open and supportive. You'll be encouraged to ask questions, share ideas and challenge existing ways of working. At Formalize, we believe in learning by doing, and you'll have the chance to grow through collaboration, mentorship and meaningful projects that stretch your skills.

This role starts at 62,000 DKK per month and can grow up to 72,000 DKK as you develop. You’ll be part of our structured career framework, which includes regular development talks. As you build skills, take on new responsibilities and progress in your role, your salary grows with you. Our framework makes development clear and transparent, so you always know what the next step looks like.

What you will do

Implement complex integration patterns, ensuring our API framework remains robust and secure even when handling difficult technical scenarios.
Develop logic-heavy features that allow our integration marketplace to scale effectively for a global partner network.
Act as a key technical sparring partner, providing high-level feedback during code reviews and helping troubleshoot deep‑stated technical issues.
Ensure code reliability and performance through advanced testing and by maintaining a high standard for long‑term system maintainability.
Collaborate across Engineering, Product, and Design to evaluate feature feasibility and define the most efficient technical implementations.
Proactively resolve technical debt, identifying and improving structural weaknesses within our integration logic.

Our tech stack

Angular 21 (embracing signals, but heavy use of RxJS)
TailwindCSS
PostgreSQL
PHP with Laravel
Redis for caching
Serverless infrastructure on AWS

Not an expert in our entire stack? No problem. At Formalize, we value curiosity and a willingness to learn. With solid fundamentals and the right mindset, we will help you grow the rest.

What you bring

Professional experience in a Software Engineering role, building and maintaining scalable web applications in a production environment.
Strong technical fundamentals in object‑oriented programming, system design, and common design patterns.
Direct experience with Domain‑Driven Design (DDD) and the ability to produce clean, maintainable, and well‑structured code.
Experience with at least one server‑side language (we work with PHP) and a modern frontend framework (we use Angular).
A disciplined approach to testing, with experience implementing patterns to ensure system reliability.
The ability to communicate technical trade‑offs clearly, providing high‑level feedback to colleagues and participating effectively in technical discovery.

What do we offer you?

Thorough pre‑ and onboarding to set you up for success
A culture of ownership, trust, and independence with the support you need
Continuous development through bi‑annual growth talks and weekly check‑ins
A strong team spirit where we celebrate wins and enjoy time together across offices
Our annual Global Summit, where the whole company meets and connects

Our recruitment process