Senior Frontend Engineer - Core platform

What are we looking for?

SentinelOne is building an industry-leading AI SIEM solution and we need a talented Frontend Engineer to help us create an intuitive, scalable, well-tested and high-performance interface that security teams will love. The ideal candidate will be a driven individual with a track record of delivering modern web applications with outstanding user experience and performance in the B2B domain. 

We're seeking someone who takes ownership of features and product components, driving them to success while collaborating with our strong team of like-minded developers. 

You'll play a crucial role in improving the day-to-day experience of threat investigators and cyber analysts worldwide, helping them effectively manage diverse asset inventory, identify and mitigate threats, and reduce exposures and vulnerabilities. 

What will you do?

• Design, build, and test the Asset Inventory frontend using modern technologies like React, TypeScript, TanStack, Playwright, and more
• Take full ownership of the feature development lifecycle, from concept to production
• Collaborate closely with backend engineers, UX designers and product managers to create a seamless, intuitive user experience
• Conduct code and design reviews, providing constructive feedback to continuously improve quality
• Optimize performance, scalability and security — our product handles large-scale security data and must be both fast and robust

What knowledge and skills should you bring?

• Deep expertise in React and TypeScript, with hands-on experience building reusable UI components and scaling complex front-end applications
• Solid understanding of unit, integration, and end-to-end testing
• Experience working with both REST and GraphQL APIs
• Proactive involvement in code reviews, with a focus on driving improvements in code quality and team standards
• Strong attention to detail, ensuring users get the best possible UX
• Awareness of web accessibility standards and the ability to build accessible user interfaces
• Solid understanding of CSS and frontend performance optimization
• Ability to tackle complex scenarios, problem-solve efficiently, and create intuitive user experiences
• Excellent communication and collaboration skills—you’ll be working across teams to bring ideas to life

Why Us? 

Join a cutting-edge company tackling extraordinary challenges alongside top industry talent. Enjoy flexible hybrid work in Prague (Karlin), Brno (Clubco), or remotely across CZ/SK.

Competitive Benefits Package:

• Stock & Bonuses: Grant of Restricted Stock Units with a 4-year vesting plan, annual performance-based bonuses, and an employee stock purchase plan.
• Time Off & Well-being: Flexible Time Off, on top of the standard 5 weeks vacation, flexible paid sick days, fully paid Short Term Sick/Nursing Leave, 16-week parental leave, grandparent leave, and additional company holidays.
• Health & Insurance: Private medical care (for you and +1), premium life insurance, pension contribution, and a Global Employee Assistance Program.
• Work Perks: Monthly meal and well-being allowance, high-end MacBook/Windows laptop, work-from-home support, and in-office refreshments.
• Growth & Community: LinkedIn Learning, internal mentoring, educational support, generous referral bonuses, and optional company events (sports, BBQs, charity).

Be part of an inclusive, innovative workplace that values belonging, flexibility, and growth!