Senior SDET: AI-Driven Testing with Python

Roku, Inc.; Cambridge; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid work model

Mental health support

Healthcare coverage

Job summary

Roku, Inc. is seeking a Senior Software Engineer (SDET) to transform our testing strategy. You will collaborate with Software and QA Engineers to elevate testing quality using AI, analytics, and intelligent test solutions across the streaming platform.

You will shape regression prevention, define new testing methodologies, and leverage agentic AI tools to drive reliability and scalable testing practices. This role offers hybrid work arrangements within the UK and opportunities to influence

Qualifications

• 5+ years of hands-on experience with test architecture and automation systems design
• Experience with AI-powered testing and regression prevention
• Proficient in Python; some working knowledge of C++
• Experience with CI tools (Jenkins/GitLab) and related quality gates
• Excellent communication and leadership abilities

Responsibilities

• Design and implement intelligent test analysis systems that identify quality gaps, predict failure patterns, and optimize test effectiveness
• Design systems that collect, analyse and act on the testing data to continuously improve on the quality processes
• Experience with systematic regression tracking and implementing process to prevent regression reoccurrence
• Establish new methodologies for measuring and improving test quality beyond simple pass/fail metrics, focusing on regression prevention and production reliability
• Leverage AI-powered tools for automated failure analysis, root cause identification, and test flakiness scoring
• Define and implement architectural patterns that make testing more effective, maintainable, and aligned with business impact

Skills

AI for testing

Test automation

Python

C++

Leadership

QA testing

Tools

Jenkins/GitLab

TeamCity

AWS

Claude Code

Cursor

MCP servers

Job description

Roku, Inc. is seeking a Senior Software Engineer (SDET) to transform our testing strategy. You will collaborate with Software and QA Engineers to elevate testing quality using AI, analytics, and intelligent test solutions across the streaming platform.

You will shape regression prevention, define new testing methodologies, and leverage agentic AI tools to drive reliability and scalable testing practices. This role offers hybrid work arrangements within the UK and opportunities to influence