Senior C# Developer

Find out which location is closest to you
  • Rotterdam
  • Fulltime
  • Bachelor

You'll build modern applications for Coolblue back’s office. We have a lot of friends, and they crave well-structured data and user-friendly, task-focused applications.

Senior C# Developer

  • Fulltime
  • Rotterdam
  • Bachelor

What does a Senior C# Developer at Coolblue do?

You regularly participate in brainstorm sessions about user experience, data, and task flow with the UX Designer, Product Owner, and Data Scientists in your team. Besides that you will create disconnected, highly congruent, and testable code that can easily be maintained and is future-proof. Want to become Senior C# Developer at Coolblue? Read below if the job suits you

 
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You enjoy doing this

  • Working with various types of data stores, such as Oracle or AWS.
  • Solving problems by using accepted best practices and principles, such as TDD/BDD, SOLID, and design patterns.
  • Coaching your medior colleagues.
  • Giving sprint demo's
  • Share knowledge during pair programming and constructively comment on pull requests.
  • Working on Github and like writing automated tests to ensure software quality yourself.
 
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This calendar makes you happy

Week 35

  1. MonMonday
  2. TueTuesday
  3. WedWednesday
  4. ThuThursday
  5. FriFriday
    1. Daily stand-up

      Daily stand-up
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      Start with team. Short update about your tasks and progress

    2. Coding

      Coding
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      Focus on the assigned user stories to make sure our web application will run even smoother.

    3. Pair Programming

      Pair Programming
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      Join Essam to work on a change to a new system.

    4. Personal development conversation with Yuliya

      Personal development conversation with Yuliya
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      Discuss personal development progress with team lead.

    5. Meeting with stakeholders

      Meeting with stakeholders
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      Collect feedback on a new feature.

    1. Daily stand-up

      Daily stand-up
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      Start with team. Short update about your tasks and progress.

    2. Write unit tests

      Write unit tests
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      Write tests. Are the conditions clear? High enough coverage? Check! Write that code!

    3. Coding

      Coding
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      Focus on the assigned user stories to make sure our web application will run even smoother

    4. Follow AWS PluralSight course

      Follow AWS PluralSight course
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      Get even more insights on our cloud system.

    5. Catching up with Remko (developer)

      Catching up with Remko (developer)
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      Join Google meet with Remko to hear what he's currently working on.

    1. Daily stand-up

    2. Go over code review comments

      Go over code review comments
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      Someone left a remark on your PR, go over it and discuss with team member. Make changes based on the discussion.

    3. Team lunch

      Team lunch
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      We’re in the office so let’s catch up and enjoy each other’s company.

    4. Refinement

      Refinement
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      Breaking down and further defining product backlog items into smaller more precise items. Add details, such as a description, order, and story points.

    5. Outdoor sync with Roel

      Outdoor sync with Roel
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      Last meeting of the day while walking home together.

    1. Daily stand-up

    2. Review submitted code

      Review submitted code
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      Did they follow our principles? Thanks to your explanation you gave them last time you see less errors in the pull request. Great!

    3. Knowledge sharing session

      Knowledge sharing session
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      One of your team members gives a short presentation on the new framework that was released.

    4. (Digital) drinking coffee with your junior buddy

      (Digital) drinking coffee with your junior buddy
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      Time to catch up to see how he’s doing and if he needs help.

    5. Join tech demo

      Join tech demo
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      Learn more about what the other development teams are working on.

    1. Daily stand-up

    2. Work on development plan

      Work on development plan
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      You set the goal for yourself to improve stakeholder communication so follow this course in the Coolblue University.

    3. Retrospective

      Retrospective
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      What went well last sprint? What could be better next sprint?

    4. Discuss architectural decisions with the team

      Discuss architectural decisions with the team
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      Should we use Kafka for the new feature?

    5. Drinks with the team

      Drinks with the team
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      Finished the checklist and everything is set for the weekend? Let's go to a biergarten and share a drink and some bitterballen!

You recognize yourself in the following

  • You have more than 5 years of experience as a C# Developer.
  • Automated testing has no secrets for you anymore. 
  • You have experience with software architecture and building .NET applications.
  • You have experience with Web API or MVC in .NET Core.
  • Working with Scrum/Agile working is second nature to you.
  • You know your way around with Microservices.
  • Having experience with front-end development (React), Javascript, HTML5 and CSS is a plus.
  • You have experience with automating and implementing recurring tasks in a CI/CD system.
  • You live in The Netherlands. Currently we don't offer relocation assistance for this position.
  • Your English level is B2: you are able to explain complex technical challenges to your colleagues and stakeholders.
 
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This is what you’re looking for in a job

  • Money.
  • Over 30 training courses at our own Coolblue University.
  • Travel allowance and a retirement plan and where-you-work-allowance.
  • 25 leave days. As long as you promise to come back.
  • A discount on all our products.
  • An extraordinarily good work environment with colleagues from all over the world who make you happy, epic (digital) Coolblue parties, pubquizzing, and other activities.
  • Room for new initiatives and ideas. We’re always open to those, whether you’ve been with us for a week, a month, or a year.
  • A job at one of the fastest-growing companies in the Benelux.
  • A picture-perfect office at a great location. You could crawl to work from Rotterdam Central Station. Though we recommend just walking for 2 minutes.
  • Working together in an international environment with colleagues from the Netherlands, Belgium, Spain, Brazil, Russia, and Italy, among others. 
  • Hybrid working: a fine balance between working at the office and working from home. Of course, we’ll help you create the best home-office possible. Including desk chair, laptop, and blue garlands.
 
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“Being involved in the full life cycle of all software, applications used at Coolblue is an exciting challenge.”
Jonney

  • How does Coolblue adhere to the COVID-19 measures?

    We adhere to the recommendations and guidelines of RIVM and the government, of course. Working at the office makes us happy, that’s why we are working partly from home and partly from the office.

    The interviews for your application will also take place partly via video calls and partly in the office. On your first day we meet each other at the office. So we can drink a cup of coffee and get to know each other better.

  • Can I live outside the Netherlands and still work in the Tech department of Coolblue?

    No, it’s not possible to work from abroad as a Tech colleague. We like collaborating in a digital way, but over this last year we’ve seen that doing a retrospective, a pair-programming session, or grabbing a drink in real life is much more fun. That’s why we like everybody to be in the Rotterdam office at least 4-8 days a month on average. Together with your manager, you decide how often you and your team really meet in the office.

    Besides that it’s much more fun to see each other in real life, there are also some tax regulations that make it hard to work from abroad.

    For a lot of vacancies, we have the possibility to help you (and your family) to relocate to the Netherlands. Visit our relocation page for more information about moving to the Netherlands.

  • How often do I go to the office?

    Together with your manager, you decide how many days you and your team will be in the office. On average, this will be at least 4-8 times a month.

  • Do you help new colleagues relocate?

    Yes, we do this for most vacancies. If the vacancy you’re interested in has a relocation sign on top, it means we’ll help you (and your direct family) to relocate. You can find more information on our relocation page.

    Do I need to live in Rotterdam when I move to the Netherlands?

    No, that’s not necessary. The Netherlands is a small country, so if you want to live in Amsterdam, Utrecht, or Tilburg, that’s okay. As long as you are able to meet your team in the Rotterdam office around 4-8 times a month, you can live wherever you want.

  • Can I keep developing myself?

    Coolblue University: learning at Coolblue, in a different way.

    With over 30 training courses in our own Coolblue University, you can get a little bit better every day. At Coolblue, we go back to school sometimes. But not by sitting there quietly and just listening. The training courses aren't boring, but interactive. You have to do exercises and have discussions with others. At the Coolblue University, we choose what we want to learn, so we can continue to develop en become real experts. For example, a Delivery Driver needs different training courses than a Customer Service Employe and a starter needs different courses than a manager.

Apply!
Like what you see? You can become a Coolbluer, apply now!
  • 1

    APPLY

    Go for it

  • 2

    PHONE CALL

    It's for you

  • 3

    1ST ROUND

    Ready, set, go

  • 4

    CASE

    Open and shut

  • 5

    2ND ROUND

    Go for the fridge

  • 6

    CONTRACT

    I do

Apply!
Like what you see? You can become a Coolbluer, apply now!
  • 1

    APPLY

    Go for it

  • 2

    PHONE CALL

    It's for you

  • 3

    1ST ROUND

    Ready, set, go

  • 4

    CASE

    Open and shut

  • 5

    2ND ROUND

    Go for the fridge

  • 6

    CONTRACT

    I do

Questions? Contact Marieke Drees
Applications from freelancers, employment agencies, and recruitment agencies are not appreciated.
Marieke Drees