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Senior Software Engineer in Test

SentinelOne· Quality Assurance / Software Testing
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Hybrid (CZ/SK)Full-timePosted 1mo ago

About the role

Senior Test Automation Engineer to lead validation efforts for SentinelOne's SaaS products, designing test strategies, developing automated frameworks, and integrating AI-powered testing methods across Back-End and Front-End for the Singularity SaaS platform.

Responsibilities

  • Lead the design, development, and execution of comprehensive validation plans and test strategies for Console and SaaS services.
  • Collaborate with product management, development, and stakeholders to translate requirements into test cases.
  • Design, develop, and maintain automated test frameworks in Python (Pytest) and/or TypeScript (Playwright).
  • Integrate AI-powered tools and workflows into the validation lifecycle to automate test triaging and PR analysis.
  • Leverage Generative AI and LLMs to optimize test case generation and coverage.
  • Utilize Docker for containerization to create consistent testing environments.
  • Manage and execute tests in cloud environments, including AWS and GCP.
  • Enhance test strategies to improve coverage, efficiency, and effectiveness.
  • Perform functional, regression, and security testing.
  • Identify, document, and track defects; collaborate with development teams for resolution.
  • Mentor junior engineers and contribute to process improvements in testing.
  • Stay up-to-date with industry best practices and emerging QA technologies.
  • Participate in code reviews and design discussions to ensure testability and quality.

Qualifications

  • Bachelor's degree in Computer Science, Software Engineering, or a related field.
  • 3+ years of experience in software quality assurance or validation engineering for SaaS products.
  • Proven experience in leading validation efforts and defining test strategies.
  • Experience developing automated test frameworks in Python and/or TypeScript (Playwright)
  • Hands-on experience integrating AI tools, LLMs, or AI-driven testing methodologies into QA workflows and CI/CD pipelines.
  • Familiarity with prompt engineering and using AI assistants to streamline testing tasks.
  • Strong understanding of SDLC and agile methodologies.
  • Experience with AWS or GCP, Docker, Kubernetes, and event-driven architectures (e.g., Kafka).
  • Familiarity with CI/CD tools (Jenkins, GitHub, GitLab).
  • Strong analytical and problem-solving skills.
  • Ability to work independently and with globally distributed teams.
  • Excellent verbal and written communication skills.

Skills

Required:Test strategy designAutomated test frameworksCI/CD integration with AI toolingDockerCloud platforms (AWS/GCP)SDLC / AgileCommunication
Nice to have:KubernetesKafka or event-driven architecturesPrompt engineering / AI-assisted testing

Benefits

  • Restricted Stock Units (RSUs)
  • Employee Stock Purchase Plan (ESPP)
  • Performance-based bonus
  • Flexible time off (5 weeks PTO) and wellness days
  • Fully paid short-term sick/nursing leave
  • Gender-neutral parental leave
  • Private medical care benefit
  • Life and disability insurance
  • Pension Insurance contribution
  • Global 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 (Prague office required 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.

CybersecurityAI SecurityEndpoint SecurityCloud SecurityAI-SIEMIdentity SecurityEDRXDR
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