13 Apr 2026

C# Developer

Coolblue

Rotterdam

13 Apr 2026

Apply

C# Developer

C# Developer role at Coolblue in Rotterdam, focusing on designing, realizing, and maintaining software with a hybrid work model. Requires at least 3+ years of C# experience, a degree in Computer Science, and expertise in .NET, cloud-native microservices, and Agile methodologies. Offers benefits like travel allowance, retirement plan, and training opportunities.

HybridFull-timeMid LevelC#.NET 8.0

C# Developer

Apply

HybridFull-timeMid LevelC#

Salary

Not specified

Work Location

Rotterdam, South Holland, Netherlands, NL

Work Model

Hybrid: A fine balance between working at the office and working from home.

Experience Required

6 years

Employment Type

Full-time

Experience Level

At least 3+ years (medior) or 6+ years (senior) of experience as a C# developer.

Core Qualifications

Technical (Must-have)

C#.NET 8.0Clean ArchitectureTDD/BDDSOLIDdesign patternsOracleMySQLDynamoDBAWS

Soft Skills

ownershipsharing knowledgeconstructive feedbackteamworkcommunication

Tools (Must-have)

DatadogGithubTeamCity

Preferred Qualifications

Technical (Nice-to-have)

ReactJavaScriptHTML5CSS

Key Responsibilities

•Solving problems with best practices and principles like Clean Architecture, TDD/BDD, SOLID, and design patterns.
•Writing automated tests to ensure software quality.
•Working with various types of data storage such as Oracle, MySQL, and DynamoDB.
•Showing ownership over solutions by logging and monitoring with Datadog.
•Sharing knowledge through mentoring, pair programming, and pull request reviews in Github.
•Getting space to develop and delve into latest technologies.
•Giving and receiving constructive feedback.
•Presenting deliverables during sprint demos.

C# DeveloperComputers and Electronics ManufacturingEngineering and Information TechnologyC#.NETAWSAgileMicroservicesHybridRotterdam

Key Responsibilities

•Solving problems with best practices and principles like Clean Architecture, TDD/BDD, SOLID, and design patterns.

•Writing automated tests to ensure software quality.

•Working with various types of data storage such as Oracle, MySQL, and DynamoDB.

•Showing ownership over solutions by logging and monitoring with Datadog.

•Sharing knowledge through mentoring, pair programming, and pull request reviews in Github.

•Getting space to develop and delve into latest technologies.

•Giving and receiving constructive feedback.

•Presenting deliverables during sprint demos.