Senior Staff Software Engineer - UI Platform

Summary

Join SentinelOne as a Senior Staff Engineer and drive technical excellence across UI Platform initiatives. You will architect and implement global services unifying functionality across cybersecurity products, boosting developer productivity and application performance. Shape the future of our frontend architecture while working with cutting-edge security products used by Fortune 500 companies. This role presents unique challenges combining developer experience, performance optimization, and enterprise-scale application architecture. You will collaborate with product teams, lead modernization initiatives, write high-quality code, and mentor other engineers. SentinelOne offers a competitive salary, comprehensive benefits, and a supportive work environment.

Requirements

• 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
• 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

Responsibilities

• Collaborate with product teams to identify and extract common patterns into reusable platform solutions
• Lead technical initiatives around monorepo management using NX, including CI pipeline optimization and improvement of developer tooling
• Write high-quality, production-ready code
• Guide and mentor other engineers, contribute to their professional growth, share best practices and architectural insights, and foster a culture of engineering excellence

Preferred Qualifications

Experience with Python or Java

Benefits

• Salary from 6000 EUR/month
• Yearly % bonus depending on the performance of the company, paid out in 2 installments
• Flexible working hours & Full remote within Slovakia ; optional membership in major co-working spaces; in Czechia we also have offices in Prague or Brno
• 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
• Meal Allowance (maximum value of the employer’s contribution per day: €4.29)
• Wellbeing Allowance (€120/month)
• 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
• 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
• Yearly bonus depending on the performance of the company
• Optional company events for those who like to meet outside of work too - mostly in Czechia expensed as business trip (sport, BBQ, charity etc.)