Senior Software Architect

As a Senior Software Architect, you will be tasked with driving the transformation of one of our core systems into a scalable modern microservices architecture and defining the next generation of our platform. In this high-visibility, high-impact role, you will lead an ambitious initiative to break down a complex monolithic system written primarily in Python into a scalable, multi-tenant, cloud-native set of services (primarily in modern Java, and Go as a secondary language). You will collaborate across the SentinelOne engineering organization with multiple engineering and product management leaders to design solutions capable of handling global SaaS scale processing daily petabytes of data and hundreds of billions of events.

What Will You Do?

Primary responsibilities include:

• Dive deep into our current monolithic architecture, identify pain points, and design innovative solutions to address them in an iterative way.
• Lead the design and development of a new microservices architecture that supports scalability, maintainability, and operational excellence.
• Collaborate with departments and teams to evaluate and implement the right tools, frameworks, and methodologies for building a robust microservices ecosystem.
• Write high-quality, production-ready code (primarily in Java) in a hands-on capacity.
• Guide and mentor other engineers, contribute to their professional growth, share best practices and architectural insights, and foster a culture of engineering excellence, collaboration, and innovation.
• Partner with other engineering organizations and teams across the globe, with product, design, quality, DevOps/Infra teams and leadership to align on objectives, design, timelines, and execution strategies.
• Our Platform stack: Java (primary; Spring (Boot) ecosystem), Go (secondary), and Python (legacy); 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, MongoDB, Redis, ClickHouse; Prometheus/Thanos, Grafana; Claude Code and other relevant agentic engineering tooling

What Skills and Knowledge Will You Bring?

Ideal candidates will have:

• Extensive software engineering experience, including proven expertise in architecting large-scale distributed systems and microservices architecture with a focus on performance, scalability, and reliability; preferrably in a SaaS product company environment.
• Demonstrated experience leading the transition from a monolithic architecture to cloud-native microservices; experience with multi-cloud, multi-region, and multi-tenant solutions is highly desired.
• Proficiency in Java (primary) and/or Go, with additional experience in Python considered a plus.
• Extensive experience with solutions built to scale using Kubernetes, and clouds like AWS and/or GCP or similar.
• Strong technical communication skills with the ability to articulate architectural concepts and influence engineering direction across teams, departments, and stakeholders.
• Intellectual curiosity, great problem-solving skills, and a genuine passion for impactful, high-stakes assignments with vast impact on customers.
• Highly desired is also proven experience leveraging agentic engineering tools and LLMs, across multiple areas of SDLC, to build better software products and accelerate development.

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:

Equity & Rewards

• Restricted Stock Units (RSUs)
• Employee Stock Purchase Plan (ESPP)
• Performance-based bonus

Time Off & Wellbeing

• Flexible time off, on top of the standard 5 weeks PTO
• Paid company wellness days and fully paid short-term sick/nursing leave
• Gender-neutral parental leave

Insurance & Financial Security

• Private medical care benefit
• Life and disability insurance
• Pension Insurance contribution
• Global business travel medical insurance
• Employee Assistance Program (EAP)

Work Perks & Flexibility

• Global home office allowance
• Meal allowance
• Hybrid work in Prague (Karlin), Brno (Clubco) or remote in CZ/SK.
• Only Prague-based employees are required to work from the office at least 2 days/week.

Wellness & Lifestyle

• Wellbeing allowance
• MultiSport benefit program
• Wellness Coach app