CrowdStrike
Sr. SDET - Cloud, Detection Engineer (Hybrid, London)
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Global Cybersecurity Leader – Join Us in Stopping Breaches
As a global leader in cybersecurity, CrowdStrike protects the people, processes, and technologies that drive modern organisations. Since 2011, our mission has remained unstoppable—we’re committed to preventing breaches. Through the world’s most advanced AI-native platform, we’ve redefined modern security, handling 3 trillion+ events daily and expanding rapidly.
Our customer base spans all industries, relying on CrowdStrike to keep businesses running, communities safe, and lives moving forward. As an equity-driven company, we foster a culture of autonomy, flexibility, and innovation. We seek driven, passionate individuals who share our relentless focus on innovation and fanatical commitment to customers, community, and each other.
Ready to shape the future of cybersecurity? Join a mission that matters.
About the Role
We’re building the next generation of cloud security at CrowdStrike, seeking visionary engineers to revolutionise threat detection. As a Software Engineer on the cloud detection engine team, you’ll architect and implement a cutting-edge detection system capable of processing billions of events across multi-cloud environments.
Your work will span:
- Developing custom query languages
- Designing event orchestration systems
- Building advanced correlation engines for sophisticated cloud-based threats
- Collaborating with world-class security researchers to transform threat intelligence into scalable detection models protecting organisations worldwide.
The team thrives on distributed systems, data engineering, and security analytics, constructing a modular, flexible architecture that supports continuous innovation. If you love optimising systems to detect real-world threats with minimal latency, solving complex problems, and working on technology with a global impact, we want you.
What You’ll Do
- Lead backend engineering projects, transitioning prototypes to scalable cloud applications across CrowdStrike products
- Build cloud-based detection systems to identify targeted attacks and automate threat intelligence at a global scale
- Collaborate with cross-team members, driving innovative solutions through brainstorming and joint development
- Champion continuous learning, sharing cutting-edge technologies, techniques, and efficiencies to raise the team’s technical IQ
- Be mentored and mentor peers across web, backend technologies, data storage, and overall system design
- Drive product evolution by re-evaluating architecture, knowledge models, UX, performance, and stability
- Enjoy high autonomy and trust to own projects end-to-end in a dynamic, agile environment
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The Technology Stack
Key tools and platforms you’ll utilise:
- Go (Golang)
- AWS/GCP/Kubernetes/Azure
- Kafka, Docker, Redis, Cassandra
- Git
What You’ll Need
Essential
- Degree in Computer Science (OR demonstrable professional experience in data structures, algorithms, or distributed systems)
- Strong grasp of scalability and distributed systems (e.g., sharding, partitioning, concurrency)
- Proven ability to collaborate effectively and work in cross-functional teams
- Rigorous adherence to engineering best practices, including:
- Comprehensive adoption of testing paradigms
- Enforcement of peer code reviews
- Architectural resilience
- Ability to excel in a fast-paced, test-driven, collaborative, and iterative programming environment
- Commitment to deliver high-quality, unit-tested software, subject to regular code reviews and CI/CD pipelines
Bonus Points
- Open-source contributions (GitHub, Stack Overflow, independent blogging)
- Hands-on experience in:
- Go (advanced)
- Scala
- GCP, AWS, Cassandra, Kafka, Elasticsearch
- Background in cybersecurity or intelligence
- Interest in programming languages or compilers or experience with:
- Designing architecture
- Implementing new systems
- Inspirational hobbies that drive creativity or technical curiosity
Benefits of Working at CrowdStrike
Career & Compensation
- Market-leading salary and equity awards, dynamically adjusted to global standards for fairness
Wellness & Work-Life Balance
- Comprehensive physical and mental wellness programs
- Competitive leave policies, aligning time off with organisational needs (holidays, vacation days)
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Growth & Development
- Supported professional advancement opportunities, regardless of tenure or role
- Opportunities for mentorship and career counselling
Community
- Employee Networks fostering connections across global teams
- Engagement opportunities for volunteer activities and community involvement
Culture & Environment
- Vibrant, world-class facilities and office spaces
- Recognised as a Great Place to Work™ globally
CrowdStrike Values
We are an equal opportunity employer, fostering a diverse, inclusive environment where everyone is valued and empowered to thrive. Our commitment to underrepresented groups includes:
- Supporting veterans, individuals with disabilities, and those transitioning from military service through affirmative action programs
- Extension from paid parental and adoption leave to encourage all parents and families
CrowdStrike is dedicated to:
- Fair employment practices—all decisions are based on merit, with no discrimination on the basis of:
- Race, colour, creed, ethnicity, religion
- Sex (including pregnancy), sexual orientation, gender identity
- Marital/family status, veteran status, age
- National origin, ancestry, physical or mental disability, medical condition
- Genetic information
- Service as an employee on public human rights commissions
- Entitlement to public assistance
If assistance is needed accessing company resources or submitting an application, contact recruiting@crowdstrike.com.
Our Legacy
Founded in 2011, CrowdStrike addressed a critical shortcoming in cybersecurity:
- Malware-based defences were inadequate against sophisticated adversaries.
- Founder George Kurtz recognised the need for endpoint protection augmented by expert intelligence—not to detect malware, but to identify the attackers.
Falcon, our global endpoint protection platform, revolutionised this space. It remains our core mission: to achieve the impossible—by stopping breaches.
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Jessica, London
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