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Backend Developer .NET

  • Region: Utrecht
  • Start: between August and September, depending on screening
  • Hours per week: 36
  • Duration: 12 months with option for extension

Backend Developer .NET

  • Region: Utrecht
  • Start: between August and September, depending on screening
  • Hours per week: 36
  • Duration: 12 months with option for extension

Backend Developer .NET

  • Region: Utrecht
  • Start: between August and September, depending on screening
  • Hours per week: 36
  • Duration: 12 months with option for extension

Backend Developer .NET

  • Region: Utrecht
  • Start: between August and September, depending on screening
  • Hours per week: 36
  • Duration: 12 months with option for extension

Voor onze opdrachtgever het Ministerie van Defensie zijn wij op zoek naar een ervaren Backend Developer .NET. In deze rol werk je aan complexe en schaalbare systemen binnen een moderne cloud native omgeving, waarbij microservices, automatisering en kwaliteit centraal staan. Je krijgt veel ruimte voor technische autonomie, innovatie en het begeleiden van collega’s binnen een professioneel DevOps-team. Daarnaast speel je een belangrijke rol in het verder ontwikkelen van CI/CD-processen en integraties met externe systemen. Wil jij impact maken binnen een technisch uitdagende omgeving?

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Work

What will you do?

  • Ontwerpen en ontwikkelen van schaalbare microservices in .NET (Core/8/10)
  • Realiseren en beheren van integraties met externe systemen via SOAP-, REST- en legacy API’s
  • Opzetten, optimaliseren en beheren van CI/CD-pipelines en GitOps-deployments
  • Uitvoeren van code reviews en bewaken van codekwaliteit
  • Technisch aansturen en begeleiden van developers binnen het DevOps-team
  • Vastleggen en verbeteren van ontwikkelstandaarden en best practices
  • Samenwerken binnen een multidisciplinair Scrum/DevOps-team
  • Bijdragen aan automatisering en continue verbetering van de ontwikkelomgeving

Context and objective

  • Werken binnen een moderne cloud native en microservice architectuur
  • Ontwikkelen van robuuste en schaalbare backend-oplossingen
  • Technische kwaliteit, automatisering en innovatie staan centraal
  • Verantwoordelijkheid nemen als Technical Lead binnen het DevOps-team
  • Bouwen aan complexe systemen met veel integraties
  • Focus op kennisdeling en samenwerking binnen een professioneel team
  • Werken in een omgeving met korte lijnen en hoge kwaliteitsstandaarden
  • Bijdragen aan een toekomstbestendige softwareomgeving

Job requirements

  • 3 jaar ervaring als Backend Developer of soortgelijke functie.
  • Kennis van ASP.NET Core, Entity Framework en API design.
  • Ervaring met containerized deployments (Kubernetes).
  • Begrip van security by design en compliance principles.
  • Ervaring met CI/CD op basis van GitLab.
  • Coachende en inspirerende houding richting medior/junior collega’s.
  • Ervaring met het werken in een Scrum team.

Wishes

  • 3 jaar ervaring van security by design en compliance principles.
  • 2 jaar ervaring met werken volgens SAFe.

Ministry of Defence

  • Deployments to Defence are usually for longer periods (1 to 4 years maximum). This position requires a B-screening with an average duration of 6-8 weeks.
  • When offering a candidate, completion of the offer form is mandatory. This also asks you to explain the requirements and wishes + include a reference to the CV.

Specific to suppliers

When you offer a professional with us and they are placed, we need information from you as a contracting party. Among other things, with regard to the Wet Ketenaansprakelijkheid. The ‘WKA’ aims to prevent abuse in the payment of payroll taxes at all links in the chain; from supplier to end customer.

Broker parties cover these risks for their customers. To limit liability, measures need to be taken. So too by Hero. Important here is WAADI registration and use of a blocked account, the G account. This is the account into which only payroll taxes and VAT are deposited, which are then paid to the tax authorities. You can apply for the G account from the Tax and Customs Administration.

If you have any questions about this, you can always call us on 085-222 1996 or email us at defensie@hero.eu.

Current assignments

Test Automation Engineer
08-06-2026
Junior Analist Microbiologie
08-06-2026
Projectleider Geo Transformatie
08-06-2026
Functioneel Beheerder Soldaatsystemen
08-06-2026
All interim assignments

Is the right assignment not among them for you right now? Then take advantage of our open registration. Or activate a job alert!

Open registration
Job alert
Mitchel Veldt
Want more information or have any questions? Please contact me.
Mitchel Veldt

Recruiter

06 11083646

Stuur mij een mail.

Want more information or have any questions? Please contact me.

Mitchel Veldt
Mitchel Veldt

Recruiter

06 11083646

Stuur mij een mail.

Services

  • Interim Professionals
  • Permanent Recruitment
  • MSP Services

DBA Act

  • Wet DBA in 2026
  • Interim mediation
  • Self-employed payroll services
  • Project secondment
  • MSP as a solution for interim
  • Model agreement
  • False self-employment
  • Sham independence

Other

  • About Hero
  • Hero Academy
  • Our Quality Standarts
  • News
  • Hero for Dummies
  • Hero The Movie
  • Contact Us
  • Careers at Hero

Want to know more about Hero?

Contact us at: 

+31 (0) 85 222 1999

Would you like to send an open application?

Send us an email
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