Senior Low-Latency Trading QA Engineer (Python)

Luxoft; Kraków; Hybrid; PLN 180,000 - 240,000; Full time

Job summary

Luxoft in Kraków seeks a Senior Automation QA Engineer to design and implement automated testing for ultra-low latency trading systems. You will build frameworks in Python and validate exchange connectivity, market data, and order processing across global venues.

You will integrate tests into CI/CD, analyze failures, and work with developers to improve reliability and performance in a high-performance computing environment.

Qualifications

• 5+ years in software testing and test automation.
• Python development for test automation.
• Experience building automated test frameworks.
• API, integration, end-to-end, and regression testing.
• Experience with PyTest, Playwright, or Selenium.
• Testing distributed/high-performance systems.
• Understanding market connectivity and exchange integrations.
• CI/CD, Git, and modern delivery practices.
• SQL and database testing skills.
• Strong debugging and root-cause analysis.

Responsibilities

• Design test strategies for low-latency trading platforms.
• Develop and maintain automated test frameworks and suites using Python.
• Create automated API, integration, E2E, and regression tests.
• Validate exchange connectivity and market data flows.
• Verify trading gateways for reliability and performance.
• Analyze requirements and latency-sensitive workflows for coverage.
• Investigate failures and drive root-cause analysis with developers.
• Integrate tests into CI/CD pipelines for production readiness.

Skills

Test automation

Python test automation

Automated test frameworks

API testing

End-to-end testing

CI/CD pipelines

SQL/database testing

Troubleshooting/root-cause

Playwright/Selenium

Tools

PyTest

Playwright

Selenium

CI/CD tools

Git

Job description

Project description

Join our Market Connectivity team, focused on building and maintaining ultra-low latency trading systems and exchange connectivity solutions for global financial markets. As a Senior Automation QA Engineer, you will play a key role in ensuring the quality, reliability, and performance of high-throughput applications operating in a high-performance computing environment, developing automated testing solutions that support critical trading and market data workflows.

Responsibilities

• Design test strategies and automation approaches for low-latency trading platforms and exchange connectivity solutions
• Develop, maintain, and enhance automated test frameworks and test suites using Python
• Create automated API, integration, end-to-end, and regression tests for trading and market connectivity workflows
• Validate exchange connectivity, market data flows, and order processing across global trading venues
• Verify the functional correctness, reliability, and performance of trading gateways and market access components
• Analyze business requirements and latency-sensitive trading workflows to ensure effective test coverage
• Investigate test failures, perform root cause analysis, and collaborate closely with developers to resolve issues
• Integrate automated tests into CI/CD pipelines and contribute to the quality, stability, and production readiness of trading systems

SKILLS

Must have

• Strong experience in software testing with a solid understanding of test automation principles and best practices
• Hands-on experience in Python development for test automation
• Experience with Robot Framework
• Experience designing, developing, and maintaining automated test frameworks and test suites
• Strong knowledge of API, integration, end-to-end, and regression testing
• Hands-on experience with Robot, PyTest, Playwright, Selenium, or similar automation frameworks
• Experience testing distributed, real-time, or high-performance systems
• Good understanding of market connectivity, market data flows, exchange integrations, or trading workflows
• Experience with CI/CD pipelines, Git, and modern software delivery practices
• Good knowledge of SQL and database testing techniques
• Strong troubleshooting, debugging, and root-cause analysis skills

Nice to have

• Experience with Investment Banking, Capital Markets, Electronic Trading, or Market Connectivity solutions• Experience with performance and latency testing of high-throughput distributed systems• Knowledge of messaging and streaming technologies such as Kafka, Solace, or IBM MQ• Experience with Azure DevOps, Jenkins, or other CI/CD platforms• Good understanding of Linux/Unix environments and containerization technologies such as Docker