QA tester

Kryptos Technologies limited; Nordrhein-Westfalen; On-site; EUR 55,000 - 85,000; Full time

Job summary

Kryptos Technologies limited is seeking a QA / Applications Test Engineer (.NET Specialist) to design, implement, and execute comprehensive manual and automated testing across .NET desktop and web apps, APIs, and legacy enterprise software.

The role involves building scalable automation frameworks, validating RESTful and SOAP services, and collaborating with cross-functional teams to ensure data integrity, reliability, and secure software delivery.

Qualifications

• Experience validating .NET applications and web, API, and legacy software.
• Ability to design and implement manual and automated test strategies.
• Familiarity with RESTful and SOAP services testing.
• Knowledge of CI/CD pipelines and DevOps tooling.

Responsibilities

• Test Strategy & Execution: Create, maintain, and execute manual and automated test cases for .NET applications and enterprise software.
• Automation Engineering: Build automation frameworks using Selenium, Playwright, or Cypress in C# or JavaScript/TypeScript.
• API & Integration Testing: Validate RESTful and SOAP services ensuring end-to-end data flows.
• Defect Management: Track bugs using Jira or Azure DevOps and coordinate with teams.
• Database Verification: Run SQL queries for data validation and migrations.
• CI/CD Integration: Integrate test suites into Jenkins, GitHub Actions, or Azure Pipelines.

Skills

Manual testing

Automated testing

Test planning

Defect triage

Tools

Selenium

Playwright

Cypress

Postman

SoapUI

Jira

Azure DevOps

Jenkins

GitHub Actions

Azure Pipelines

SQL

Job description

QA / Applications Test Engineer (.NET Specialist)

Job Description

We are looking for a versatile and meticulous QA / Applications Test Engineer with a strong background in testing .NET applications alongside web, API, and legacy enterprise software. In this role, you will design, implement, and execute comprehensive manual and automated testing strategies to ensure the highest quality, reliability, and security across our software ecosystem.

The ideal candidate will feel equally comfortable testing core C#/.NET desktop or web applications as they do validating third-party integrations, backend databases, and non-.NET auxiliary applications.

Key Responsibilities

• Test Strategy & Execution: Create, maintain, and execute comprehensive manual and automated test cases for .NET (C#, .NET, Oracle) applications as well as broader enterprise software.
• Automation Engineering: Build and extend scalable automation frameworks using tools like Selenium, Playwright, or Cypress (with C# or JavaScript/TypeScript) to reduce manual regression overhead.
• API & Integration Testing: Validate RESTful and SOAP web services using utilities like Postman or SoapUI, ensuring seamless end-to-end data flows between .NET systems and external applications.
• Defect Management: Identify, isolate, record, and track software bugs using Jira or Azure DevOps (TFS). Work closely with cross-functional development teams to ensure quick resolution.
• Database Verification: Write and run complex SQL queries to perform backend data validation, verify data integrity, and check migration workflows.
• CI/CD Integration: Integrate automated test suites into DevOps build pipelines (Jenkins, GitHub Actions, or Azure Pipelines) to facilitate continuous testing.