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Grow with Us – Senior .NET Developers for Danish Tech Hub in Madrid

Mjølner Informatics

Location not specified Remote

Posted: December 23, 2025

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Job Description

Mjølner Informatics opened its first international office in Madrid two years ago. We are now expanding the team with more highly motivated .NET Developers whose assignment will primarily be project based where you are part of developing holistic software solutions from idea to final digital product. Regardless the type of assignment, one thing is for sure – You are an essential part of building the business, boosting solutions that makes a difference for both the client and the end users.

A bit about us

We develop your business through IT, together

Mjølner is an IT House specializing in software, digitalization, and end-to-end solutions. Although we love technology, we put business first. At our offices in Denmark and Spain, we are a collective of 400 specialists.

When the task is challenging, and the solution is not obvious, we are a good choice. This has been the case since nine computer scientists from Aarhus University founded Mjølner in 1988. Since then, we have turned customers’ complex challenges into concrete, high-quality IT solutions.

Like the famous hammer whose name we bear, we hit the mark and come back stronger. We have the best colleagues because we offer a “work home”. An environment characterized by community, good professional dialogues, and a strong culture. We enjoy going to work, but we also value our leisure time and understand the importance of balance.

Since opening our Madrid office 2 years ago, we've been on an exciting growth journey. Now, it's time to welcome a new senior .NET developer to push the limits through.

We’re rooted in Scandinavian values of low hierarchy, high trust, clear communication, and work-life balance.

Your Daily Mjølner Life

As a .NET Developer at Mjølner Informatics in Madrid, you typically enter into a number of projects for Danish and international clients with the Danish & Spanish teams who will include other developers, UX consultants, project managers and designers.

The projects vary in scope, duration, industries and technologies. Currently, we are developing software projects mainly in .NET.

Freedom with responsibility and respect for family and free time is key to our culture, which is why you are in charge of your own day-to-day activities.

We prioritise each other and our social and professional community. Therefore, you get to be part of professional guilds (e.g. Frontend, Backend and Architecture, IT Security), where you can take your knowledge to new places or strengthen your current technology stack.

Your personal qualifications and competences

Preferably you have a University degree or equivalent and a minimum of 5 years’ experience as a .NET developer. It will be a plus if you are also familiar with Azure DevOps, Microservices, Terraform, Kubernetes, Azure/AWS and/or CI/CD. We value a curious mindset and a willingness to learn and develop your skills in close cooperation with your colleagues.

As you will be working with the teams in Denmark, your level of English must be very high, and you should be used to communicating with many different stakeholders both verbally and in writing.

In addition, you’ll find plenty of opportunities to share knowledge, participate in tech Meetups, and engage in cross-team collaboration that furthers both your professional growth and our company’s ambitions. We encourage innovative thinking and value your contributions to our ongoing projects, ensuring you’re not just part of a team but an integral member shaping our future. If you’re eager to work in an environment where your expertise is recognised and your development is supported every step of the way, we look forward to hearing from you.

To succeed with the above, we will make sure you visit Mjølner in Denmark, both initially and going forward, to meet your Danish colleagues and get to know our company and unique culture from the inside. Onsite customer meetings might also occur.

The rest of the time you can work from our office located centrally in Madrid in the Golden mile area.

What you get

Competitive base salary, based on what you bring to the table.

A strong support network from our developer’s team and backend guild.

A hybrid work setup of 2–3 days in the office (Goya 8, Madrid), the rest remote.

30 business vacation days, private medical insurance, and a yearly bonus.

Of course, the usual customized from your gross salary: gym membership, food & transportation tickets.

True work-life balance. We mean it, no culture of overtime here.

A people-first culture and a role where you’ll grow as a developer and make a real impact.

Interested? ✉️

Send your application by clicking the “easy apply-button”. If you would like further information about the position, please contact Department Manager, Mario Costa Céspedes, at [email protected].

START DATE
As soon as possible

WORKPLACE
Goya 8, 1st floor 28001 Madrid

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