Senior UI Test Automation Engineer (Playwright/TS)

Luxoft Poland; Polska; On-site; PLN 180,000 - 240,000; Full time

Job summary

Luxoft Poland is seeking a hands-on SDET to own UI test automation for our in-house trading platform. You will extend the Playwright framework, enable streaming multi-window workflows, and add quality gates to CI for front-end performance.

You will co-architect a unified testing framework with our backend SDET, covering UI, API, messaging, data and performance tests in one place, and drive reliability across release cycles.

Qualifications

• 5+ years of UI test automation, including designing or significantly extending a framework.
• Working Python skills (pytest, Playwright for Python): test tooling, data setup, backend checks inside UI scenarios, and contributing to the shared framework.
• Experience testing React apps with complex data grids (AG Grid or similar), dynamic forms and heavy client-side state.
• Front-end performance testing experience: Profiling with Chrome DevTools Performance and Memory panels, Lighthouse and performance APIs.
• Diagnosis: finding long tasks, layout thrashing and memory leaks.
• Budgets: setting performance budgets and enforcing them in CI.
• CI/CD experience with Azure DevOps (preferred) or Jenkins/GitHub Actions, and Git.
• Experience building isolated test environments: Linux shell scripting, Docker, AWS (EC2, ECS/EKS, S3, IAM, VPC, CloudWatch).
• Infrastructure as code: Terraform, CloudFormation or CDK.
• Strong reliability habits: isolated tests, deterministic waits, retries, triage of flaky tests.
• Experience with test reporting and traceability (Playwright reports, Allure, Azure Test Plans, TestRail).
• Clear communication and good documentation.
• Nice to have: Trading or buy-side experience; Desktop container automation; Component testing; Accessibility and visual-regression testing; OpenTelemetry or RUM tools.

Responsibilities

• Co-architect and co-own a unified testing framework that covers every area we test.
• Shared foundations: fixtures, test data, configuration, environments and reporting across UI, API, Kafka, database and performance suites.
• Cross-layer scenarios: a test may cross UI, events and database checks.
• One quality view: single view of release quality from all suites.
• Design, build and maintain end-to-end and component tests with Playwright and TypeScript for trading and analytics workflows.
• Extend our shared test toolkit: page objects, fixtures, and mocks of desktop-container APIs.
• Build front-end harnesses for real-time data with mocked WebSocket and REST responses.
• Cover UI failure modes: disconnects, expired sessions, permission failures, bursty feeds, stale data.
• Own front-end performance testing: startup time, time-to-first-data, and high update-rate resilience.
• Grid performance: render/scroll testing for large data grids.
• Container resources: monitor memory growth and CPU use in long-running sessions.
• Regression gates: convert results into CI-breaking budgets.
• Build isolated on-demand test environments on Linux and AWS; lifecycle per branch/run.

Skills

UI test automation

Python

Playwright (Python)

React testing

CI/CD

Tools

Docker

Docker Compose

AWS

Terraform

Azure DevOps

Git

GitHub Actions

Job description

Luxoft Poland is seeking a hands-on SDET to own UI test automation for our in-house trading platform. You will extend the Playwright framework, enable streaming multi-window workflows, and add quality gates to CI for front-end performance.

You will co-architect a unified testing framework with our backend SDET, covering UI, API, messaging, data and performance tests in one place, and drive reliability across release cycles.