What are we looking for?

We're seeking a Senior Staff Engineer to drive technical excellence across UI Platform initiatives at SentinelOne. In this role, you'll architect and implement global services that unify functionality across our cybersecurity products, significantly improving developer productivity and application performance. You'll have the opportunity to shape the future of our frontend architecture while working with cutting-edge security products used by Fortune 500 companies. This position offers unique challenges at the intersection of developer experience, performance optimization, and enterprise-scale application architecture.

What will you do?

• Platform Standardization: Collaborate with product teams to identify and extract common patterns into reusable platform solutions.
• Modernize the Stack: Lead technical initiatives around monorepo management using NX, including CI pipeline optimization and improvement of developer tooling.
• Hands-on Development: You’ll write high-quality, production-ready code.
• Mentor and Lead: You’ll guide and mentor other engineers, contribute to their professional growth, share best practices and architectural insights, and foster a culture of engineering excellence.

Our stack: React, TypeScript, NX; Node.js, Java; Kubernetes, Docker, AWS, GCP, FedRAMP; GitHub Actions, ArgoCD; GitHub Enterprise; depending on requirements of the service for communication we use Kafka, REST API, GraphQL, gRPC etc.; Postgres 

What skills and knowledge should you bring?

• 8+ years of experience in full-stack development with focus on frontend architecture and distributed systems
• Deep expertise in mono-repo management using NX, including CI capabilities and tooling
• Strong background in React, TypeScript, and Node.js development at scale. Experience with Python or Java is a plus.
• Strong foundation in frontend build tooling (Webpack/Vite) and performance optimization
• Experience with microservices architecture, Docker, and Kubernetes
• Track record of implementing FedRAMP-compliant solutions
• Proven experience with cloud services (S3, CloudFront) and CI/CD pipelines (GitHub actions, Jenkins)
• Ability to handle complex requirements and orchestrate various processes.

Why us?

You will be joining a cutting-edge company, where you will tackle extraordinary challenges and work with the very best in the industry.

• Flexible working hours, In Prague & nearby we're working in a hybrid model with offices in Karlin (brand new Missouri Park), remotely in the rest of CZ or SK, with optional Brno offices (Clubco Vlněna) for those who like to meet
• Generous employee stock plan in the form of RSUs (restricted stock units) grant not options; 4 years vesting with 1-year cliff and then quarterly
• Yearly bonus depending on the performance of the company, paid out in 2 installments
• Flexible Time Off (on top of the standard 5 weeks of vacation)
• Flexible Paid Sick Days
• Fully Paid Short Term Sick/Short Term Nursing Leave
• Global gender-neutral Parental Leave (16 weeks, beyond the leave provided by the local laws) & Grandparent Leave
• Volunteering paid day off & Additional paid Company holidays off 
• Pension insurance contribution
• Premium Life Insurance covered by S1
• Monthly Meal & Wellbeing Allowance
• Private medical care membership for you and your +1
• Global Employee Assistance Program (confidential counseling related to both personal and work life matters), Wellness Coach:Mind Body Sleep app company access (sessions, audiobooks, classes, private coaching etc.)
• High-end MacBook or Windows laptop, Home-office-setup gear & on top of that additional WFH Allowance
• LinkedIn Learning platform for Hard/Soft skills Training, internal mentoring 'MentorOne' & Support for your further educational activities/trainings
• Above-standard referral bonus
• On top of RSUs, you can benefit also from our attractive ESPP (employee stock purchase plan)
• Refreshments and snacks at the offices
• Optional company events for those who like to meet outside of work too (sport, BBQ, charity etc.)
• DEI&B programs that promote employee resource groups like SentinelWIN (Women Inclusion Network), Blk@S1, Latinos@S1, Pan-Asian@S1, Out@S1 (LGBTQIA+) and Sentinels Who Served