Senior C# .NET Developer

Job description

We are a fast-growing, international, tech scale-up, with a great product and ambitious plans. You are a seasoned C# Developer, enthusiastic about using your skills to build something different, something global.

Maybe you’ll find it here at ChannelEngine.


We are looking for an experienced C# .NET Developer to take up a senior position within our engineering team to help us develop and maintain the high quality systems that form the ChannelEngine ecosystem. You’ll be part of ensuring optimal efficiency, maintainability, functionality and user experience of our solution, allowing us to grow further and continue our global expansion.

What you’ll be doing

  • You’ll be working on some of the larger, high impact features of our SaaS solution,

  • Analysing, designing and estimating new features, and evaluating the impact of large architectural changes,

  • Creating and maintaining coding quality guidelines and standards,

  • Recognising and fixing code quality issues in existing code and architecture (refactoring),

  • Independently analysing, finding and fixing bugs,

  • Ensuring that external integrations meet set criteria,

  • Addressing known security vulnerabilities, and applying security by design,

  • Guiding and coaching junior and medior developers,

  • Reviewing code of other team members and coordinating the review process,

  • Consulting clients/partners during design phase, collecting and analysing ongoing issues, advising on solutions, and coordinating tests,

  • Proactively following recent developments in e-commerce, software architecture, development methodologies, SaaS, and providing input for applying this knowledge to ChannelEngine,

  • Contributing to recognising future business needs and planning for how our architecture will support/enable it,

  • Participating in scrum team meetings and organising knowledge sharing sessions.


Our tech stack

  • C#, TypeScript, Sass

  • MS SQL & SQL Server, Redis, ElasticSearch (ELK), RabbitMQ

  • .NET 5, React, Angular, ASP.NET MVC

Job requirements

What you’ll need

  • A bachelor’s (HBO or WO) degree in IT, Computer Science or a related field,

  • 5+ years’ programming experience using C# and .NET,

  • Hands-on experience in application architecture design and implementation,

  • Experience designing large features, code migrations or other high impact changes,

  • A good understanding of relational databases and SQL, and experience with large data sets,

  • Experience working with complex applications using CI/CD and automated testing,

  • Experience working in and/or leading a scrum team, and providing guidance to other developers,

  • Good knowledge of asynchronous programming,

  • Extensive knowledge of collection types and LINQ, as well as object oriented programming (OOP) and design patterns,

  • Experience with DI-frameworks (SimpleInjector, StructureMap, Microsoft DI),

  • Experience with web services (REST, SOAP),

  • Experience with version control systems (Mercurial, Git, SVN),

  • Experience with test driven development (TDD) and unit test frameworks,

  • Ability to write code that is easy to read, test and re-use,

  • Excellent communication skills in English, both written and verbal,

  • Flexibility, creativity, and a can-do attitude.


Nice to have

  • Experience with other types of data exchange (FTP, SFTP),

  • Familiarity with frontend Javascript frameworks (Angular, Vue, Backbone, React), and tooling (Gulp, Grunt, Webpack, NPM),

  • Knowledge of CSS preprocessors (Sass, Less).


What can we offer you?

  • Number 1: working at a company that is at the forefront of the world of e-commerce and online marketplaces,

  • An interesting industry: marketplaces are booming; therefore our company is thriving!

  • Contribute to the development of our self-owned international e-commerce platform,

  • Dedicated time for innovation and personal development,

  • Work in our modern office next to Leiden Central Station, with views across the city, or of course, from home,

  • State-of-the-art tech: we work with the latest technologies, business models and tools,

  • Ergonomic workstations, sit-stand desks and super-fast laptop with two monitors,

  • Great colleagues to work with! We are a fun and energetic mix of people who enjoy the work we do and the people we work with!

  • Freedom and responsibility to organise your own time,

  • An attractive pension scheme.


About ChannelEngine

ChannelEngine is a fast-growing, e-commerce SaaS solution. We help brands, retailers and wholesalers find millions of new customers by connecting them to the biggest marketplaces around the world.


Our story began in 2013 when it became undeniable that marketplaces were going to be one of the most critical components of the global e-commerce industry. We saw an opportunity to make these powerful platforms available to every business, and now ChannelEngine offers a complete, user-friendly, marketplace management suite with seamless integration, enabling businesses to expand their reach internationally. Our clients include Bugaboo, Hunkemöller, Brabantia, Bosch, JDE, and Reckitt, to name just a few.


ChannelEngine is growing at a rapid pace and currently covers channels in Europe, North- and Central America, the Middle East, and Asia-Pacific. Our mission is to cover the globe. For this, we need to expand our teams with adventurous and ambitious people who want to shape the world of e-commerce with us.