Backend Developer (.NET)

TL;DR

Backend Developer (.NET): Building and maintaining backend services and integration layers for a B2B energy platform with an accent on API design, system reliability, and architectural standards. Focus on contributing to a cross-organisational Community of Practice to optimize the backend ecosystem while delivering business features in a cross-functional team.

Location: Must be based in the Netherlands, with hybrid work at the Rotterdam HQ.

Salary: €70,000–€95,000 gross per year.

Company

hirify.global is a leading energy company committed to becoming climate neutral by 2035 through sustainable digital solutions.

What you will do

• Design and maintain .NET/C# backend services and APIs for the B2B digital platform.
• Build integration layers between frontend and backend systems to ensure high performance.
• Collaborate with cross-functional teams including product managers, designers, and testers.
• Participate in the Backend Community of Practice to define architectural standards and patterns.
• Contribute to the full software development lifecycle, including deployment and operational support.
• Proactively identify and resolve performance and reliability issues.

Requirements

• 3-5 years of experience in backend development with .NET/C#.
• Proven experience building APIs and integrations in a production environment.
• Familiarity with Azure cloud platforms and SQL Server.
• Experience with containerization (Docker) and microservices architecture.
• Understanding of CI/CD pipelines and DevOps practices.
• Must be based in the Netherlands for hybrid collaboration at the Rotterdam office.

Nice to have

• Experience in the energy sector or large-scale enterprise environments.
• Strong interest in cross-team technical collaboration and architectural leadership.

Culture & Benefits

• Hybrid working model: 40% office, 40% home, 20% flexible.
• FlexBudget for extra holiday days or payout.
• Commitment to personal and professional development.
• Opportunity to work abroad for up to 3 weeks per year with approval.
• Bonus or collective profit sharing schemes.