Senior Software Architect

SentinelOne; Poland; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

RSUs

ESPP

Competitive leave benefits

Gender-neutral parental leave

Medical benefits

Pension scheme

EAP

Global home office allowance

Mobile phone allowance

Wellness benefit

Job summary

SentinelOne is seeking a Senior Software Architect to transform a core system into a scalable microservices architecture. You will lead global collaborations to design cloud-native solutions, primarily in Java, with Go and Python influences across a modern stack including Kubernetes and AWS/GCP.

You will mentor engineers, shape engineering practices, and work across product, design, and infrastructure to deliver high-impact, scalable software for a SaaS platform.

Qualifications

• Extensive software engineering experience with architecture of large-scale distributed systems.
• Experience leading transition from monolithic to cloud-native microservices.
• Proficiency in Java (primary) and Go; Python is a plus.
• Experience with Kubernetes and cloud platforms (AWS/GCP).
• Strong communication skills to influence engineering direction across teams.
• Curiosity and problem-solving for high-impact assignments.
• Experience leveraging agentic engineering tools and LLMs across SDLC.

Responsibilities

• Dive into the current monolithic architecture and design iterative improvements.
• Lead design and development of a scalable microservices architecture.
• Collaborate to evaluate tools, frameworks, and methodologies for a robust ecosystem.
• Develop POCs and prototypes, perform code reviews, deliver production-grade code (Java).
• Mentor engineers and promote engineering excellence and collaboration.
• Coordinate with global teams and leadership on objectives and timelines.
• Contribute to multi-tenant, cloud-native solutions with scalable services.

Skills

Java

Go

Python

Kubernetes

AWS

GCP

Microservices

Distributed systems

Leadership

Technical communication

LLMs

Job description

Our Purpose

At SentinelOne, we are driven by a clear purpose: to give the advantage to those who secure our future. As AI reshapes how organizations build, operate, and innovate, the responsibility to protect them becomes more critical than ever. When you join SentinelOne, your work helps protect global enterprises, critical infrastructure, and the technologies shaping tomorrow. If you are motivated by meaningful challenges and want your impact to be real, measurable, and global, you will find purpose here.

About Us

SentinelOne is a company at the intersection of AI and security, pioneering a new operating model for cybersecurity. Our AI-native platform unifies protection across endpoint, cloud, identity, data, and AI systems to deliver autonomous detection and response with clarity and speed. By combining real-time analytics, intelligent automation, and a unified data foundation, we reduce noise, simplify complexity, and empower security teams to focus on what truly matters.

Our teams are builders, problem-solvers, and innovators committed to shaping the future of security. If you are excited to solve hard problems alongside talented, mission-driven people, we invite you to help us build a safer future for humanity.

What Are We Looking For?

We’re looking for people who are relentlessly curious and committed to continuous learning. AI is reshaping every function across our business, and we enable every team member, regardless of role or level, to build fluency in AI tools and concepts. Those who thrive here actively seek out new solutions, experiment thoughtfully, and apply what they learn to drive better, faster, smarter outcomes.

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 cloudbased monolithic system, written primarily in Python, into a scalable, multi-tenant, cloud-native set of services (primarily in modern Java for new development; you may also meet Go as a secondary language in newer parts of the codebase). 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 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.
• Readiness to "get your hands dirty" by developing POCs and prototypes, performing code reviews and contributing to high-quality, production-ready code (primarily in Java).
• 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, AI gateway, 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 a transition from monolithic architecture to cloud-native microservices; highly desired is experience with multi-cloud, multi-region, and multi-tenant solutions.
• Proficiency in Java (primary, preferred language) 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)

Time Off & Wellbeing

• Competitive leave benefits
• Gender-neutral parental leave

Insurance & Financial Security

• Medical and insurance benefits
• Pension scheme
• Employee Assistance Program (EAP)

Work Perks & Flexibility

• Global home office allowance
• Mobile phone allowance

Wellness & Lifestyle

• Wellness benefit

SentinelOne is proud to be an Equal Employment Opportunity and Affidative Action employer. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics.

SentinelOne participates in the E-Verify Program for all U.S. based roles.