Senior Tester with Python

Coforge KRAKÓW 2026-08-25
Processing 7,000+ transactions per second across 3,000+ cloud servers, the platform requires strong
Quality Engineering, automation, observability, and responsible use of AI-assisted testing.
Responsibilities:
• Design, execute, and maintain automated tests for backend, API, integration, regression, and
performance-critical scenarios.
• Build reliable automation frameworks integrated with version control and CI/CD pipelines.
• Use AI-assisted tools to improve test design, test data preparation, failure analysis, and
automation maintenance.
• Analyze logs, metrics, traces, and test results to identify regressions, risks, and reliability gaps.
• Collaborate with engineering, product, and operations teams to prevent defects and resolve
issues efficiently.
• Drive shift-left, shift-right, and continuous improvement practices across the delivery lifecycle.

Job Requirements
Must have:
• 4+ years in QA, Quality Engineering, or SDET roles, including test design, automation, execution,
and defect analysis.
• Strong Python experience for automation, tooling, data processing, or framework development.
• Experience testing backend, API, integration, and regression scenarios in distributed or highvolume systems.
• Experience integrating automated tests into CI/CD pipelines such as Jenkins, GitHub Actions, or
GitLab CI.
• Working knowledge of Linux/Unix, Git, XML, XPath, regular expressions, shell scripting, and log
analysis.
• Understanding of risk-based testing, shift-left quality, exploratory testing, test data
management, and flaky-test investigation.
• Practical experience with AI-assisted engineering or QA tools.
• Strong analytical, problem-solving and English communication skills.
Nice to have:
• Experience with Playwright, Selenium, pytest, Robot Framework, JUnit/TestNG, or similar
frameworks.
• Experience with Java, Groovy, or C++ test tooling.
• Knowledge of REST-assured, Postman, contract testing, service virtualization, or schema
validation.
• Experience with JMeter, Gatling, k6, or other performance testing tools.
• Familiarity with cloud, containers, Kubernetes, observability, security, accessibility, or resilience
testing.

  • Experience in Agile or DevOps-oriented teams with strong ownership and prioritization skills.
    We will give careful consideration to your application and review your details against the position
    criteria. You will receive separate notification as we progress your application. Please note that only
    candidates who meet the minimum requirements will proceed in the selection process. To learn more
    about the people and culture at Sabre, follow us on Twitter, Facebook and LinkedIn.
Requirements: Python