Software Developer in Test (SDET)

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:

  • Lead the design, modification, development, and implementation of test automation architecture and framework
  • Understand and provide oversight on the entire test infrastructure
  • Facilitate test-driven development within the company
    Be responsible for creating and maintaining various Testing Frameworks for cloud-based .NET applications
  • Define best automation practices, solvе complex problems, suggest best tools to improve test coverage, test execution times and etc
  • Integrate Automation Suites (both front-end and back-end) into continuous integration pipelines by cooperating with DevOps team
  • Provide consultation on the most complex testing strategies
  • Communicate, coordinate and align automation strategy with engineering team members, make recommendations to improve reliability, performance, best practices, and processes

Who you are:

  • You have 5+ years experience in Software Engineering with a focus on test automation
  • You have solid experience with C#, JavaScript and T-SQL
  • You have solid experience in Selenium WebDriver
  • You are experienced in developing Testing Frameworks (based on xUnit / NUnit)
  • You have a strong understanding of CI / CD principles and Test Automation Pyramid
  • You have some experience integrating Automation Suites into CI / CD tools like Jenkins
  • You have strong knowledge with code coverage tools and metrics
  • You are able to make the important trade-offs between perfection and complexity
  • You have strong communication and collaboration skills
  • You can fluently communicate in English


Bonus Skills:

  • Knowledge of containers, virtualizations, and ability to help design and implement computing grids used in testing Selenium
  • Understanding of Performance Testing
  • Understanding of JavaScript Unit Testing
  • Experience with Angular / AngularJS
  • Experience with AWS


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


 To apply for the vacancy, please send your CV to

Back to All jobs