Senior SDET: UI Test Automation for Real-Time Trading

Luxoft; Polska; On-site; PLN 180,000 - 280,000; Full time

Job summary

Luxoft is seeking an experienced UI test automation engineer to join our trading platform project. You will design and extend a unified UI testing framework, focusing on React apps and data-rich grids, with Playwright and TypeScript.

You will build end-to-end tests, create isolated Linux/AWS environments, and collaborate with UI engineers, traders and analysts to automate critical workflows, ensure reliability, and drive CI/CD quality gates. Strong Python tooling and performance focus are valued.

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; diagnosing long tasks and memory leaks.
• CI/CD experience with Azure DevOps (preferred) or Jenkins/GitHub Actions, and Git.
• Experience building isolated test environments: Linux CLI, Docker, AWS (EC2/ECS/EKS, S3, IAM, VPC, CloudWatch); IaC with Terraform, CloudFormation or CDK.
• Strong reliability habits: isolated tests, deterministic waits, controlled retries, and triage of flaky tests.
• Experience with test reporting and traceability (Playwright reports, Allure, Azure Test Plans, TestRail).
• Clear communication and good documentation.

Responsibilities

• Co-architect and co-own a unified testing framework across UI, API, Kafka, database and performance 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: mocked WebSocket and REST responses, controlled test data, and deterministic replay of streaming updates.
• Cover UI failure modes: disconnects and reconnects, expired sessions, permission failures, bursty feeds, and stale data.
• Own front-end performance testing: startup and time-to-first-data, and grid rendering at scale.
• Run UI suites in CI/CD: sharded parallel runs, scheduled regressions, and reporting on pull requests.
• Validate front-end/back-end contracts and payload schemas.
• Make failures diagnosable: Playwright traces, screenshots and video, and correlation with telemetry.
• Work with UI engineers, business analysts and traders to automate critical workflows and define QA acceptance criteria.

Skills

UI test automation

Python testing

React testing

Front-end perf testing

CI/CD tooling

Test environments

Reliable tests

Test reporting

Communication

Tools

Playwright

Docker

AWS

Terraform

Git

Azure DevOps

Job description

Luxoft is seeking an experienced UI test automation engineer to join our trading platform project. You will design and extend a unified UI testing framework, focusing on React apps and data-rich grids, with Playwright and TypeScript.

You will build end-to-end tests, create isolated Linux/AWS environments, and collaborate with UI engineers, traders and analysts to automate critical workflows, ensure reliability, and drive CI/CD quality gates. Strong Python tooling and performance focus are valued.