Senior Software Architect

SentinelOne; Wrocław; On-site; PLN 300,000 - 420,000; Full time

Benefits offered by this job

RSUs

ESPP

Leave benefits

Parental leave

Medical benefits

EAP

Home office allowance

Wellness program

Job summary

SentinelOne in Poland is seeking a Senior Software Architect to drive a cloud-native evolution of a core system. You will lead the transformation from a monolithic Python stack toward scalable microservices in Java and Go, with Kubernetes and multi-cloud in focus.

Join a mission-driven team to design, implement, and mentor across engineering groups, ensuring reliability, performance, and rapid delivery for global SaaS scale.

Qualifications

• Extensive software engineering experience in large-scale distributed systems.
• Experience leading a transition from monolithic to cloud-native microservices.
• Proficiency in Java (primary) and Go; Python is a plus.
• Experience with Kubernetes and multi-cloud deployments (AWS/GCP).
• Strong technical communication and influence across teams.
• Ability to mentor engineers and drive engineering excellence.

Responsibilities

• Design and develop a scalable microservices architecture for global SaaS scale.
• Lead the migration from a monolithic system to cloud-native microservices.
• Evaluate and adopt tools, frameworks, and methodologies for a robust ecosystem.
• Develop POCs, review code, and contribute production-grade Java code.
• Mentor engineers and foster a culture of engineering excellence.
• Collaborate with global teams across product, design, QA, and DevOps.

Skills

Software architecture

Distributed systems

Java

Go

Python

Cloud platforms

Technical communication

SDLC tooling

Tools

Kubernetes

Docker

AWS

GCP

Kafka

REST/GraphQL

gRPC

Postgres

MongoDB

Redis

ClickHouse

Job description

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 aSenior 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:

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)
• Competitive leave benefits
• Gender-neutral parental leave

Insurance & Financial Security

• Medical and insurance benefits
• Employee Assistance Program (EAP)
• Global home office allowance

Wellness & Lifestyle

• Wellness benefit

SentinelOne is proud to be an Equal Employment Opportunity and
SentinelOne participates in the E-Verify Program for all U.S. based roles.