Senior .NET Engineer – Cloud, Azure & REST APIs (Hybrid Madrid)

Mjølner Informatics A/S

Aarhus

Hybrid

DKK 448,000 - 673,000

Full time

14 days+

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Benefits offered by this job

Competitive salary

Yearly bonus

Private health insurance

30 vacation days

Hybrid Madrid office (2 days/wk)

Work-life balance culture

Trips to Denmark

Technical communities

Impactful projects

Job summary

Mjølner Informatics A/S is seeking a Senior .NET Developer to join our Madrid team, delivering .NET and cloud-based solutions for Danish and international clients. You’ll work with teams across Spain and Denmark, shaping architecture, APIs, and modern cloud-native systems using Azure and related technologies.

You should have 5+ years in .NET, strong C#, REST APIs, and a solid understanding of databases, microservices, containers, and CI/CD.

Qualifications

University degree in Computer Science, Software Engineering, or equivalent.
Minimum 5 years of experience as a .NET developer with C# and .NET.
Experience with RESTful APIs, relational databases, data modelling.
Experience with microservices, containers, and cloud environments (Azure and/or AWS).
Familiarity with Azure DevOps, Terraform, Kubernetes and CI/CD pipelines is an advantage.
Excellent English written and spoken skills.
Familiarity with AI tools and technologies and a curiosity for learning.

Responsibilities

Work on a variety of projects for Danish and international clients in Madrid.
Collaborate with developers, consultants, and project managers across offices.
Influence technical decisions and design approaches with freedom and responsibility.
Share knowledge, attend technical meetups, and contribute to professional communities.