As a Senior Backend Engineer, you will work on a high‑throughput, highly available agent configuration platform for exclusions, policies, and security controls, safely delivering customer intent from the console to millions of agents worldwide and serving as the foundation for all console‑driven agent configuration. You will also be responsible for configuration processing and delivery pipelines that turn user and system changes into optimized payloads consumed by agents at a massive scale. As part of SentinelOne’s main product line - Endpoint Protection, we secure tens of millions of devices across the globe running all kinds of OS (Windows, Linux, macOS) and process billions of security events every day. You’ll be joining a team with a significant impact on how our customers’ environments (including 4 of Fortune 10 companies, hundreds of Global 2000, and public sector) are protected, how they interact with agents via configuration, gain visibility into their security posture, and understand the risks and act upon them.

What Will You Do?

Primary responsibilities include:

• Design, develop, implement, test, document, and operate large‑scale, high‑volume, and low‑latency backend platform services - that turn customer intent (for example, exclusions, policies, and security controls) into effective configuration on every protected endpoint.
• Improve reliability, scalability, and observability of configuration management, ensuring configuration changes can be processed at scale, meet latency and throughput objectives, and be traced end‑to‑end across systems.
• Translate business and functional requirements into robust, scalable, and operable configuration solutions that fit within our overall data and control‑plane architecture.
• Maintain application stability and data integrity by defining and monitoring key metrics and SLOs (for example, configuration delivery latency, error rates, configuration coverage) and continuously improving the codebase and architecture.
• Evolve existing configuration services and platforms through regular refactoring and decomposition while delivering incremental customer value.
• Collaborate closely with other engineering, product, and customer‑facing teams to design configuration models and APIs that are flexible enough for new security use cases while safe and operable in production.
• Continuously learn and adopt new technologies and architectural patterns that help us scale configuration management to hundreds of millions of configurations and requests per second while keeping the system observable and operable.
• Your Toolkit: Our new components are primarily developed in Java, while our current backend uses Go and Python. Communication between microservices is facilitated using gRPC, REST, GraphQL APIs, and Kafka, depending on specific requirements. We use PostgreSQL and ClickHouse for efficient event and configuration state storage and retrieval at scale. Our services are deployed across multiple AWS/GCP regions with Kubernetes; among other tools, you’ll also use Docker, GitHub, and ArgoCD. You’ll have access to modern AI‑powered tools to accelerate development, debugging, design exploration, and operational work.

What Skills and Knowledge Will You Bring?

Ideal candidates will have:

• Multiple years of professional backend development experience in Java as the primary language, ideally complemented by experience with Go and/or Python.
• Ability to quickly dive into new products and understand their inner workings.
• Self‑driven individual who takes end‑to‑end ownership.
• Experience building microservices with gRPC, REST, GraphQL APIs, backed by PostgreSQL.
• Experience with AWS and/or GCP.
• Very good communication skills - you will be regularly in touch with Product, Technical Account Managers (who provide feedback from clients), and other cross‑functional teams.
  It’d be great if you have: Experience in an enterprise SaaS company or a cybersecurity product company. Experience with managing containerized workloads via Kubernetes and Docker; and also with Kafka and/or ClickHouse.

Why SentinelOne?

AI is redefining how the world operates and rewriting the rules of security in real time, and SentinelOne was built for this moment. From day one, we architected an AI-native platform designed to operate at machine speed, not as an add-on to legacy systems but as the foundation itself. If you want to build where innovation and impact move together, this is that place.

We invest in our Sentinels with comprehensive, competitive benefits designed to support you and your family:

• Enjoy flexible hybrid work in Prague (Karlin), Prague-based employees are required to work from the office at least two days per week.
• 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.
• Insurance & Health: Pension Insurance Contribution, Premium life insurance, Private medical care (for you and +1), 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).