Sr. Site Reliability Engineer Core Platform & Embedded Reliability (Hybrid)

As a global leader in cybersecurity CrowdStrike protects the people processes and technologies that drive modern organizations. Since 2011 our mission hasnt changed were here to stop breaches and weve redefined modern security with the worlds most advanced AI-native platform. We work on large scale distributed systems processing almost 3 trillion events per day and this traffic is growing daily. Our customers span all industries and they count on CrowdStrike to keep their businesses running their communities safe and their lives moving forward. Were proud to work for a mission-driven company leveraging AI to transform the way we work. CrowdStrikers drive their careers through flexibility and autonomy while also being expected to contribute to a culture of responsible AI adoption experimentation and innovation. We use an AI-first mindset as a force multiplier to proactively and continuously accelerate execution build expertise uncover insights and solve complex problems. Were always looking to add talented CrowdStrikers to the team who have limitless passion a relentless focus on innovation and a fanatical commitment to our customers our community and each other. Ready to join a mission that matters The future of cybersecurity starts with you.

About the Role:

CrowdStrike Falcon is the industry standard in cloudnative cybersecurity and threat hunting processing trillions of events per day. As a Principal SRE you will operate at the intersection of our Core Platform and Embedded Reliability charters: building the foundational libraries services and tooling that every product group depends on while embedding directly with product engineering teams and their leadership to drive reliability outcomes at scale.

While we embrace the SRE moniker at CrowdStrike it means something far more serviceoriented and engineeringheavy than traditional operations. This is handson systems engineering writing production code rearchitecting critical systems and eliminating entire classes of failure not ticket management. It is far and away our most selfdriven and autonomous backend engineering role with the freedom to move up down and laterally across the stack as needed.

Youll join a group with bottomup visibility and ownership of a fastexpanding codebase (including AIbased Detection & Response) and a farreaching mandate for service resiliency. Several key feature additions and critical rearchitecture initiatives are underway: deploying core services to additional cloud providers modularizing into reusable components improving core libraries and frameworks maturing observability tooling (tracing profiling alerting SLOs) and automating away manual toil across all of the above. Recent examples of the teams work include introducing adaptive concurrency into our core Kafka library to implement flow control that protects database performance resolving critical issues in leader election libraries and building infrastructureascode tooling that eliminated manual deployment processes.

At the Senior Engineer level your influence is organizational. Product engineers and engineering leaders will come to you for guidance on architectural decisions because youve earned credibility through handson work and delivered results. You will shape architectural choices that affect every feature development team and provide shared architectural components leveraged throughout the Falcon Platform including Unified Search Protobuf libraries and other sharedtier infrastructure.

Why This Role Matters: Our customers depend on us to protect their businesses from sophisticated threats and reliability isnt optional its fundamental to our mission. Your work directly impacts whether organizations around the world can defend themselves against cyberattacks. Youll work on problems that matter at a scale few companies can match with the autonomy to make real architectural decisions.

Location: This position requires candidates to be based in Midtown Manhattan NY; Redmond WA; Sunnyvale CA; or Austin TX. Its a hybrid role with employees typically working 2 to 3 days per week in the office.

What Youll Do:

• Partner with engineering leadership across multiple product groups to define and drive multiyear reliability roadmaps.

• Design and implement architectural improvements to services libraries and platforms that impact teams across all of CrowdStrike.

• Develop and maintain services that meet aggressive reliability and scalability demands.

• Extend and build new libraries for crosscutting concerns spanning CrowdStrikes cloud platform which comprises hundreds of libraries and services.

• Lead initiatives around reliability scalability performance and cost efficiency in largescale distributed systems.

• Establish foundational observability practices: ensure teams instrument services properly react to signals effectively and leverage observability to drive automation such as continuous delivery.

• Define and implement servicelevel objectives and error budgets that drive real decisionmaking and prioritization.

• Lead performance and cost optimization efforts: profiling bottleneck analysis capacity planning and cloud efficiency improvements.

• Conduct resilience engineering: chaos experiments failure injection failure modeling and designing for graceful degradation.

• Design and implement automation and infrastructureascode to improve infrastructure reliability and eliminate manual toil.

• Provide technical leadership during complex incidents and ensure followthrough on retrospectives with concrete improvements that eliminate entire classes of failures.

• Identify opportunities to extract common patterns into shared libraries and tools or partner with platform teams on improvements benefiting multiple product groups.

• Continuously reevaluate our products to improve architecture knowledge models developer and user experience performance and stability.

• Drive strategic technical decisions and influence infrastructure and operational improvements across the organization.

• Mentor and coach engineers raising the technical IQ of the team and driving architectural standards across the org.

• Use and give back to the open source community; evangelize software engineering best practices especially as they pertain to Go.

• Brainstorm define and build collaboratively with members across multiple teams as an energetic selfstarter who owns and is accountable for deliverables.

What Youll Need:

• 10 years of experience building and operating distributed systems and serviceoriented backends at scale.

• 5 years developing microservices for a SaaS product in a modern backend language (Go Java Scala Kotlin Python ).

• Expertlevel proficiency in at least one programming language with expertlevel Go or demonstrated ability and willingness to reach expert level in Go.

• Deep understanding of distributed systems: consensus algorithms replication consistency models failure modes and scalability patterns.

• Proven experience scaling backend systems sharding partitioning horizontal scaling capacity planning and performance optimization are second nature.

• Deep understanding of multithreading concurrency and parallel processing.

• Track record of making impactful architectural decisions at organizational scope and seeing them through to production.

• Strong systems thinking and the ability to influence without direct authority across organizational boundaries.

• Thorough command of engineering best practices: appropriate testing paradigms effective peer code review and resilient architecture.

• Ability to thrive in a fastpaced testdriven collaborative and iterative environment; strong teamplayer orientation.

• A desire to ship code and a love of seeing your bits run in production.

• Degree in Computer Science or commensurate experience in data structures algorithms and distributed systems.

• Proven experience utilizing AI technologies to enhance decision-making streamline workflows and processes improve efficiency and drive business outcomes.

Bonus Points:

• Experience driving reliability improvements in organizations with hundreds or thousands of microservices.

• Deep knowledge of Kubernetes or other largescale orchestration systems.

• Handson experience with AWS Cassandra Kafka Elasticsearch/OpenSearch or similar largescale distributed technologies.

• Experience with Google Cloud Platform (GCP).

• Experience with Oracle Cloud Infrastructure (OCI).

• Experience delivering or operating services across multiple cloud providers including multicloud abstraction layers portability and cloudagnostic tooling.

• Track record of building internal platforms developer platforms or tools that other engineers depend on.

• Experience with infrastructure cost optimization at scale.

• Background in performance engineering: profiling optimization and identifying system bottlenecks.

• Experience with chaos engineering or resilience testing practices.

• History of establishing SLO/SLI frameworks and error budgets in production environments.

• Contributions to the open source community (GitHub Stack Overflow technical blogging).

• Prior experience in the cybersecurity or intelligence fields.

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Benefits of Working at CrowdStrike:

• Market leader in compensation and equity awards

• Comprehensive physical and mental wellness programs

• Competitive vacation and holidays for recharge

• Paid parental and adoption leaves

• Professional development opportunities for all employees regardless of level or role

• Employee Networks geographic neighborhood groups and volunteer opportunities to build connections

• Vibrant office culture with world class amenities

• Great Place to Work Certified across the globe

CrowdStrike is proud to be an equal opportunity employer. We are committed to fostering a culture of belonging where everyone is valued for who they are and empowered to succeed. We support veterans and individuals with disabilities through our affirmative action program.

CrowdStrike is committed to providing equal employment opportunity for all employees and applicants for employment. The Company does not discriminate in employment opportunities or practices on the basis of race color creed ethnicity religion sex (including pregnancy or pregnancy-related medical conditions) sexual orientation gender identity marital or family status veteran status age national origin ancestry physical disability (including HIV and AIDS) mental disability medical condition genetic information membership or activity in a local human rights commission status with regard to public assistance or any other characteristic protected by law. We base all employment decisions--including recruitment selection training compensation benefits discipline promotions transfers lay-offs return from lay-off terminations and social/recreational programs--on valid job requirements.

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