C# Test Automation Engineer (f/m/x)
Offer summary

(Summary generated by AI based on the full job description)

The project focuses on banking systems with emphasis on automated performance testing and stability. Required skills include C#, Selenium, SpecFlow, API, REST, JSON, XML, SQL. Responsibilities cover test script design and implementation, result analysis, defect debugging, framework maintenance, and collaboration within an Agile Scrum team. Benefits include a healthcare package and benefits platform.

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C# Test Automation Engineer (f/m/x)

Company: Sii Sp. z o.o.

from: 24 June 2026
to: 24 July 2026
salary not specifiedB2B contract (full-time)
salary not specifiedcontract of employment
Offer parameters
level:mid • senior
working mode:hybrid • full office
Gdańsk, Oliwa
Gdańsk, Oliwaaleja Grunwaldzka 472eView on map

Requirements

Expected technologies

C#
Selenium
API
JSON
HTML

Optional technologies

SpecFlow

Our requirements

  • At least 8 years of extensive experience in test automation within IT projects
  • Advanced knowledge of test automation standards, tools, and best practices
  • Proficiency in C# programming
  • Previous work with test automation frameworks (Selenium, SpecFlow)
  • Knowledge of API testing and REST services
  • Understanding of data formats and standards (JSON, XML)
  • Basic knowledge of HTML
  • Knowledge of SQL and database querying
  • Ability to work independently on highly complex testing problems
  • Experience in mentoring, coaching, and leading other team members
  • Proactive approach to issue identification and solution initiation
  • Fluency in both Polish and English

Your responsibilities

  • Designing and implementing automated performance test scripts
  • Executing non-functional tests and analyzing test results
  • Identifying, reporting, verifying, and debugging defects
  • Reviewing requirements and technical designs from a testing perspective
  • Maintaining, improving, and extending test automation frameworks
  • Managing and preparing test data with an understanding of data dependencies
  • Recommending actions based on test outcomes and quality metrics
  • Collaborating with the agile Scrum team to ensure delivery quality
  • Supporting continuous integration processes for automated tests
  • Participating in risk mitigation, impediment resolution, and test-related communication
Company

About the project

We are looking for a Test Automation Engineer to join a long-term banking project for a leading external client. You will become part of an agile team responsible for ensuring high performance and stability of business-critical systems.

What we offer

  • Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
  • Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
  • We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
  • Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
  • Comfortable workplace – class A offices or remote work
  • Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
  • PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose
  • Fantastic atmosphere created by all Sii Power People

Recruitment stages

  • 1.
    Send your CV
  • 2.
    Talk to us about your expectations
  • 3.
    Learn more about our projects and choose the best
  • 4.
    Start your adventure with Sii!

Sii Sp. z o.o.

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment.
Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

This is how we work

C# Test Automation Engineer (f/m/x)
I apply to:
Sii Sp. z o.o.
Gdańsk, Oliwa
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