Senior Software Engineer in Test at SentinelOne in South Moravian

Job description

Our Purpose At SentinelOne, we are driven by a clear purpose: to give the advantage to those who secure our future. As AI reshapes how organizations build, operate, and innovate, the responsibility to protect them becomes more critical than ever. When you join SentinelOne, your work helps protect global enterprises, critical infrastructure, and the technologies shaping tomorrow. If you are motivated by meaningful challenges and want your impact to be real, measurable, and global, you will find purpose here. About Us SentinelOne is a company at the intersection of AI and security, pioneering a new operating model for cybersecurity. Our AI-native platform unifies protection across endpoint, cloud, identity, data, and AI systems to deliver autonomous detection and response with clarity and speed. By combining real-time analytics, intelligent automation, and a unified data foundation, we reduce noise, simplify complexity, and empower security teams to focus on what truly matters. Our teams are builders, problem-solvers, and innovators committed to shaping the future of security. If you are excited to solve hard problems alongside talented, mission-driven people, we invite you to help us build a safer future for humanity. What Are We Looking For? We’re looking for people who are relentlessly curious and committed to continuous learning. AI is reshaping every function across our business, and we enable every team member, regardless of role or level, to build fluency in AI tools and concepts. Those who thrive here actively seek out new solutions, experiment thoughtfully, and apply what they learn to drive better, faster, smarter outcomes. As a Senior Software Engineer in Test, you will be tasked with ensuring the quality, reliability, and performance of SentinelOne's backend test frameworks and tools as part of the Test Platform Services team, leading standard development, defining test strategies, building tools, and working closely with backend development and quality teams to deliver exceptional user experiences. You will take responsibility for the design, implementation, and maintenance of the backend test frameworks and tooling responsible for high quality delivery of SentinelOne SaaS services. What Will You Do? Primary responsibilities include: 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. What Skills and Knowledge Will You Bring? Ideal candidates will have: A bachelor's degree in Computer Science, Software Engineering, or a related field, with 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, usi