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Three years ago, Mjølner Informatics opened its first international office in Madrid.We are growing our Madrid team and looking for a Senior Developer who wants to build meaningful software solutions together with skilled colleagues in Spain and Denmark. You will work on project-based assignments for Danish and international clients, while being part of a strong professional community where knowledge sharing, trust and work-life balance matter.

Abitaboutus

WedevelopbusinessthroughIT,together.

Whenthetaskischallengingandthesolutionisn'tobvious,we'retherightpeopletocall.That'sbeentruesinceninecomputerscientistsfromAarhusUniversityfoundedMjølnerin1988.Eversince,we'vebeenturningourcustomers'complexchallengesintoconcrete,high-qualityITsolutions.

Likethehammerwe'renamedafter,wehitthemarkandcomebackstronger.Webelieveinofferingmorethanaworkplace:a"workhome,"shapedbycommunity,strongprofessionaldialogueandaculturepeoplegenuinelywanttobepartof.Weenjoyourwork,butwealsovalueourtimeoffandunderstandtheimportanceofbalance.

Thatcultureisalsowhywe'reexcitedaboutwhat'sahead:we'recurrentlyintheprocessofbeingacquiredbyAccenture.Fornow,ithasnoconcreteimpactonday-to-daylifeatthecompanyyou'llstillfindthesameteam,thesameculture,andthesamewayofworking.

SinceopeningourMadridofficethreeyearsago,we'vebeenonanexcitinggrowthjourneyandnowit'stimetowelcomeanewSeniorDevelopertoourteam.We'rerootedinScandinavianvalues:lowhierarchy,hightrust,clearcommunication,andgenuinework-lifebalance.

Projectsvarywidelyinscope,duration,industryandtechnology,though.NETiscurrentlyatthecoreofmostofoursoftwarework.

Freedomwithresponsibility,respectforfamilyandfreetime,arecentraltohowweworkwhichiswhyyou'llmanageyourownday-to-day.





Wealsobelieveinlookingoutforeachotherandinvestinginourprofessionalcommunity.That'swhyyou'llhavethechancetojoinourprofessionalguilds(Frontend,BackendandArchitecture,ITSecurity,amongothers),whereyoucandeepenyourcurrentexpertiseorbranchintonewareas.

Whatyoubring

- UniversitydegreeinComputerScience,SoftwareEngineering,orarelatedfield(orequivalentprofessionalexperience)
- Minimum5yearsofexperienceasa.NETdeveloper,withsolidexpertiseinC#andthe.NETecosystem
- Experiencewithbackendarchitectureanddesignpatterns,includingexperiencebuildingandmaintainingRESTfulAPIs
- Solidunderstandingofrelationaldatabases(e.g.SQLServer)andexperiencewithdatamodellingandqueryoptimization
- ExperiencewithMicroservicesarchitecture,containerization,andcloudenvironments(Azureand/orAWS)
- FamiliaritywithAzureDevOps,Terraform,Kubernetesand/orCI/CDpipelinesisanadvantage
- FamiliaritywithAItoolsandtechnologies,withtheabilitytoeffectivelyleveragetheminday-to-dayworktoenhanceproductivity,problem-solvingandoverallefficiency

Acurious,solution-orientedmindset,withagenuineinterestincontinuouslearningandtechnicalgrowthisalsohighlyappreciated.

Whatweoffer





You'llhaveplentyofopportunitiestoshareknowledge,attendtechmeetups,andcollaborateacrossteams,supportingbothyourowngrowthandthecompany'sambitions.Wevalueinnovativethinkingandwantyoutofellikeagenuinecontributortoourprojects,notjustateammemberbutsomeonehelpingshapewherewe'reheaded.

Tohelpyouthrive,we'llmakesureyouvisitusinDenmarkbothwhenyoujoinandonanongoingbasistomeetyourDanishcolleaguesandexperienceourculturefirsthand.Onsitecustomermeetingsmayalsocomeupfromtimetotime.

Therestofthetime,you'llbebasedatourofficeinCalleGoya(Madrid),rightinthecitycentre.

Whatyouget

- Acompetitivebasesalary,reflectingwhatyoubringtothetable
- AstrongsupportnetworkwithinourdeveloperteamandbackendGuild
- Ahybridsetupofminimum2daysintheoffice(Goya8,Madrid)
- 30businessdaysofvacation
- Arealwork-lifebalance,wemeanit,there'snoovertimeculture
- Theusualflexiblebenefitsdeductedfromyourgrosssalary:gymmembership,foodandtransporttickets
- Apeople-firstcultureandarolewhereyou'llgrowasadeveloperwhilemakingarealimpact

Interested?

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 Aarhus, Copenhagen, Silkeborg, Kolding, and Madrid, 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 al

📌 Senior .Net Developer (España)
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