Application Guide

How to Apply for Principal .Net Fullstack Developer

at Eurofins

🏢 About Eurofins

Eurofins is a global leader in analytical testing services, dedicated to creating safer, healthier, and more sustainable environments. With a strong presence in BioPharma testing, the company offers a mission-driven culture and opportunities to work on cutting-edge laboratory informatics solutions.

About This Role

As a Principal .Net Fullstack Developer, you will lead the design and development of next-generation Electronic Lab Notebook (ELN) applications for Eurofins BioPharma Product Testing. Your work will directly impact the efficiency and accuracy of lab processes, enabling faster and safer product testing globally.

💡 A Day in the Life

Your day starts with a stand-up meeting with your Agile team, followed by coding sessions on Angular frontends and .NET APIs. You'll review pull requests, mentor junior developers, and collaborate with product owners to refine requirements. Afternoons may involve database optimization or troubleshooting production issues, with time set aside for unit testing and documentation.

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Interview Prep

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🎯 Who Eurofins Is Looking For

  • Has 7-10 years of hands-on experience in full-stack development using Microsoft stack (.NET, C#, ASP.NET, MVC, WebAPI) and modern frontend frameworks like Angular 2+.
  • Demonstrates deep knowledge of Cosmos DB, MSSQL, and TFS, with the ability to design scalable database solutions.
  • Possesses strong testing discipline, proficient in unit testing (MS Test, NUnit, MOQ) and UI testing (Jasmine, Karma).
  • Thrives in Agile/Scrum environments and can lead technical discussions, code reviews, and mentor junior developers.

📝 Tips for Applying to Eurofins

1

Highlight your experience with Electronic Lab Notebook (ELN) or similar scientific software in your resume and cover letter.

2

Showcase specific projects where you led end-to-end development with Angular and .NET, including database design with Cosmos DB or MSSQL.

3

Mention your familiarity with TFS for version control and work item tracking, as it's a key requirement.

4

Provide examples of how you've ensured code quality through unit testing and UI testing frameworks like Jasmine or Karma.

5

Tailor your application to emphasize leadership in Agile teams, including any experience with sprint planning or retrospectives.

✉️ What to Emphasize in Your Cover Letter

['Emphasize your passion for building applications that improve lab efficiency and data integrity in a regulated environment.', 'Detail your experience with full-stack development using Microsoft technologies and Angular, with specific examples of complex web applications.', "Highlight your ability to lead technical initiatives and mentor teams, aligning with the 'Principal' level of the role.", 'Mention any experience in BioPharma or life sciences, as familiarity with lab workflows is a strong plus.']

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🔍 Research Before Applying

To stand out, make sure you've researched:

  • → Explore Eurofins' BioPharma Product Testing division to understand their lab workflows and the role of ELN.
  • → Read about Eurofins' sustainability initiatives and how technology supports their mission.
  • → Check recent news or press releases about Eurofins' digital transformation or new lab informatics projects.
  • → Review the company's career page for insights into their culture and values.

💬 Prepare for These Interview Topics

Based on this role, you may be asked about:

1 Describe a time you designed a scalable web application using .NET and Angular; what architectural decisions did you make?
2 How do you approach testing in a full-stack environment? Explain your strategy for unit and UI testing.
3 Explain the differences between Cosmos DB and MSSQL and when you would use each in a project.
4 How do you handle technical debt and code reviews in an Agile team?
5 Walk us through your experience with TFS for source control and CI/CD pipelines.
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⚠️ Common Mistakes to Avoid

  • Failing to mention specific experience with Angular 2+ or Cosmos DB, which are key requirements.
  • Submitting a generic resume that doesn't highlight full-stack leadership or testing expertise.
  • Not demonstrating knowledge of Agile methodologies or how you've contributed to sprint success.

📅 Application Timeline

This position is open until filled. However, we recommend applying as soon as possible as roles at mission-driven organizations tend to fill quickly.

Typical hiring timeline:

1

Application Review

1-2 weeks

2

Initial Screening

Phone call or written assessment

3

Interviews

1-2 rounds, usually virtual

✓

Offer

Congratulations!

Ready to Apply?

Good luck with your application to Eurofins!

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