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Senior Software Engineer in Test - Test Platform

SentinelOne· Test Platform Services
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Hybrid (CZ/SK)Full-timePosted 4d ago

About the role

Senior Software Engineer in Test responsible for ensuring the quality, reliability, and performance of SentinelOne's backend test frameworks and tooling for SaaS services. Lead development of test standards, frameworks, and tools, collaborate with backend and QA teams, and mentor junior engineers.

Responsibilities

  • Lead the design, development, and improvements of standards, test frameworks, and tools used in validation of backend SaaS services.
  • Collaborate with development, quality and other stakeholders to understand requirements and translate them into effective tooling.
  • Design, develop, and maintain automated test frameworks in Python (Pytest) and TypeScript (Playwright) to enhance testing efficiency and coverage, working closely with the development and validation teams.
  • Integrate AI powered tools and workflows into the software development lifecycle, leveraging Generative AI and LLMs to automate quality processes and boost developer and validation productivity.
  • Utilize Docker for containerization and manage test platform services in cloud environments.
  • Continuously enhance test strategies to improve coverage, efficiency, and effectiveness of backend test harnesses and infrastructure.
  • Mentor junior engineers and contribute to the continuous improvement of testing standards, processes and methodologies.
  • Stay up to date with industry best practices and emerging technologies in AI, tooling and quality assurance.
  • Work hands-on with development and validation teams to push consistency across codebases and shepherd adoption of tooling.

Qualifications

  • A bachelor's degree in Computer Science, Software Engineering, or a related field
  • 5 or more years of experience in tooling development, software quality assurance or validation engineering, with a strong focus on SaaS products
  • Proven experience in leading test frameworks and defining comprehensive test strategies
  • Experience developing and maintaining automated test frameworks in Python, using Playwright, TypeScript, or similar tools (Java)
  • Hands-on experience integrating AI tools, LLMs, or AI-driven testing methodologies into daily QA workflows and CI/CD pipelines
  • Familiarity with prompt engineering and using AI assistants to streamline testing processes
  • Strong understanding of SDLC and agile methodologies
  • Experience with AWS or GCP, Docker, Kubernetes, and event-driven architectures such as Kafka; familiarity with CI/CD tools (Jenkins, GitHub, GitLab)
  • Excellent analytical and problem-solving skills
  • Ability to work independently and collaboratively with globally distributed teams, with a strong technical background in software automation

Skills

Required:PythonTypeScriptPlaywrightDockerCloud environmentsCI/CD
Nice to have:KubernetesAI / LLM integration

Benefits

  • Restricted Stock Units (RSUs)
  • Employee Stock Purchase Plan (ESPP)
  • Performance-based bonus
  • Flexible time off, on top of the standard 5 weeks PTO
  • Paid company wellness days and fully paid short-term sick/nursing leave
  • Gender-neutral parental leave
  • Private medical care benefit
  • Life and disability insurance
  • Pension Insurance contribution
  • Global business travel medical insurance
  • Employee Assistance Program (EAP)
  • Global home office allowance
  • Meal allowance
  • Hybrid work in Prague (Karlin), Brno (Clubco) or remote in CZ/SK. Only Prague-based employees are required to work from the office at least 2 days/week.
  • Wellbeing allowance
  • MultiSport benefit program
  • Wellness Coach app
Last updated Oct 22, 2026. Interested? Apply on the company site.
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About SentinelOne

AI-Powered Enterprise Cybersecurity Platform

SentinelOne unifies AI-powered endpoint, cloud, identity, and data protection—enhanced by our Security Data Lake for seamless and efficient cybersecurity.

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