Software Developer in Test (SDET), Mid to Senior

Job Description

The Linnworks Engineering team  is growing, and we’re looking for a Software Developer in Test (SDET) to join our team in Tallinn, Estonia.

What you'll do:

  • Participate in creating and maintaining various Testing Frameworks for cloud-based .NET applications
  • To work as a part of the DevOps team on integrating Testing Frameworks into CI / CD pipelines
  • Facilitate test-driven development within the company
  • Define best automation practices, solvе complex problems, suggest best tools to improve test coverage, test execution times and etc

Who you are:

  • 3+ years of experience in Software Engineering with a focus on Test Automation / Quality Assurance
  • Solid experience with C#
  • You are fluent in UI Testing (ideally - based on Selenium WebDriver, C#)
  • You know how to automate API Testing
  • You know how to develop Testing Frameworks from scratch (ideally - based on xUnit / NUnit)


Bonus Skills:

  • Experience integrating Automation Framework into CI / CD suites (like Jenkins)
  • Experience with JavaScript / Angular / AngularJS
  • Experience with T-SQL
  • Experience with AWS
  • Experience with Docker or any other Container Technologies
  • Understanding of Unit Testing (Frontent / Backend)
  • Understanding of Database Testing
  • Understanding of Performance Testing
  • Understanding of Security Testing


Our stack of technologies:

  • Backend: .NET 4.6.2+ on C# (ASP.NET WebAPI, WCF, SignalR, Ninject and etc.), .NET Core 2.0+ on C# (ASP.NET Core), Docker, Node.js and etc.
  • Frontend: AngularJS, RequireJS, SASS and etc.
  • Scripting: PowerShell, Groovy, Python, bat and etc.
  • Storage: Microsoft SQL Server 2016 (T-SQL, OLAP), AWS (DynamoDB, ElastiCache, RDS, S3 and etc.), MongoDB, InfluxDB
  • AWS: EC2, VPC, ECS / EKS, ELB, Lambda, Route 53 and etc.
  • IDE: Visual Studio 2017 / Rider, Visual Studio Code
  • Telemetry: EFK (Elasticsearch, Fluentd, Kibana), CloudWatch, CloudTrail Grafana, Monitis, Google Analytics, Customer Feedback
  • CI / CD: Jenkins, Automated Tests (XUnit, NSubstitute, Selenium, Allure Reports)
  • Server: Windows Server 2012 / 2016, Linux (Redhat, Amazon Linux AMI), IIS, Kestrel, Apache
  • Slack, JIRA, Mercurial, G Suite, Lucidchart


What we offer:

  • Interesting projects
  • Young, friendly, and versatile team
  • No corporate BS
  • Competitive salary
  • An option of flexible working hours
  • 5 weeks of holiday per year
  • Learning opportunities (conferences, books, courses)
  • A cozy office where you can work and relax (playroom with foosball, table tennis, and sofas, pull-up bar, office library, chessboard)
  • Coffee, fruits, yogurts
  • Quarterly corporate events and regular team building activities
  • Gym compensation


 To apply for the vacancy, please send your CV to

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