Senior Software Engineer, Backend - Cloud

CrowdStrike

Senior backend engineer building authentication and authorization services for CrowdStrike’s Falcon cybersecurity platform. Leading scalable, event-driven cloud systems processing millions of security decisions per second.

Posted 8/5/2026full-timeSunnyvale • California • 🇺🇸 United StatesSenior💰 $140,000 - $215,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive backend object-oriented development experience, particularly in building high-scale event-driven microservices and cloud-based systems. Proficient in authentication and authorization mechanisms, with a strong understanding of distributed systems and scalability challenges.

Highest-signal resume keywords

Backend Object-Oriented DevelopmentMicroservices ArchitectureAuthentication and AuthorizationDistributed SystemsCloud-Based Systems

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

GolangJavaScalaNode.jsPythonC# (.NET Core)Fine-Grained Auth RulesMultithreadingConcurrencyParallel Processing

Soft Skills

Team CollaborationMentoring

Tools & Technologies

AWSCassandraKafkaElasticsearchOpenFGA

Certifications & Qualifications

GovCloud Access Eligibility

Industry Keywords

CybersecurityThreat IntelligenceOpen Source ContributionsEngineering Best PracticesContinuous Integration

Tech Stack

Tools & technologies

AWSCassandraCloudCyber SecurityDistributed SystemsElasticSearchGoJavaJavaScriptKafkaMicroservices.NETNode.jsOpen SourcePythonScala

About the role

Key responsibilities & impact

Lead backend engineering efforts from rapid prototypes to large-scale applications across CrowdStrike products
Leverage and build cloud based systems to detect targeted attacks and automate cyber threat intelligence production at a global scale
Brainstorm, define, and build collaboratively with members across multiple teams
Champion new technologies and techniques while raising the technical IQ of the team
Mentor and be mentored on web, backend, and data storage technologies
Re-evaluate products to improve architecture, knowledge models, user experience, performance, and stability
Own deliverables and remain accountable for results
Contribute to the open source community
Build and extend authentication and authorization services supporting the Falcon Platform
Maintain operational ownership of services, including designing, implementing, and running them in production

Requirements

What you’ll need

Necessary criteria to obtain GovCloud Access, most typically citizenship or PR/GC status
8+ years of backend object-oriented development experience in production
Experience with Golang, Java, Scala, Node.js, Python, or C# (.NET Core)
Experience with authentication and authorization (AuthN and AuthZ)
Experience with FGA (Fine-Grained Auth rules)
Recent experience building high-scale event-driven microservices architecture handling at least 5M events/day
Ability to scale backend systems using sharding, partitioning, and horizontal scaling
Degree in Computer Science or commensurate experience in data structures, algorithms, and distributed systems
Desire to ship code and experience operating code in production
Deep understanding of distributed systems and scalability challenges
Deep understanding of multithreading, concurrency, and parallel processing technologies
Team collaboration skills
Thorough understanding of engineering best practices, testing paradigms, peer code reviews, and resilient architecture
Ability to thrive in a fast-paced, test-driven, collaborative, iterative programming environment
Ability to meet commitments on time and produce high-quality, unit-tested, code-reviewed software checked in regularly for continuous integration
Proven experience utilizing AI technologies to enhance decision-making, streamline workflows and processes, improve efficiency, and drive business outcomes
Periodically pass additional background and fingerprint checks consistent with government customer requirements
Bonus: experience with OpenFGA or Zanzibar
Bonus: authored or led successful open source libraries and projects
Bonus: contributions to the open source community
Bonus: exposure to Go, Scala, AWS, Cassandra, Kafka, Elasticsearch
Bonus: prior experience in cybersecurity or intelligence fields

Benefits

Comp & perks

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
Bonuses
Equity grants
Health insurance
401k
Paid time off