Sr. Software Engineer, Backend - Cloud (Hybrid)

CrowdStrike; Sunnyvale (CA); Hybrid; USD 180,000 - 260,000; Full time

Benefits offered by this job

Competitive compensation

Equity awards

Wellness programs

Vacation and holidays

Parental leaves

Professional development

Employee networks

Vibrant office culture

Great Place to Work Certified

Job summary

CrowdStrike in Sunnyvale, CA seeks a Senior Backend Engineer to lead auth backend services from prototype to production at scale. You’ll own end-to-end designs, mentor others, and collaborate across product teams to improve performance and reliability.

Hybrid work 2–3 days on-site; you’ll work with Go, Python, AWS, Kafka, and GraphQL to build a high-scale event-driven microservices platform supporting Falcon Platform.

Qualifications

• 8+ years backend development experience in production with Go/Java/Scala/Node.js/Python/C#.NET.
• Experience with AuthN and AuthZ and Fine-Grained Auth rules.
• Recent work on high-scale event-driven microservices (5M+ events/day).
• Ability to scale backend systems via sharding and horizontal scaling.
• CS degree or equivalent knowledge in data structures/algorithms/distributed systems.

Responsibilities

• Lead backend engineering from prototypes to large-scale apps across CrowdStrike products.
• Build cloud-based systems to detect threats and automate intel production at global scale.
• Collaborate across teams to define and implement solutions.
• Mentor other developers and raise team technical IQ.
• Improve architecture, performance, and reliability continuously.
• Own deliverables with a self-starting, responsible attitude.

Skills

Go

OAuth

Python

AWS

Kafka

Git

Cassandra

Elasticsearch

Redis

Postgres

ZMQ

GraphQL

AuthN/AuthZ

Microservices

Distributed systems

Multithreading

Education

Bachelor's degree in Computer Science

Tools

Git

AWS

Cassandra

Kafka

Elasticsearch

Redis

Postgres

GraphQL

Job description

As a global leader in cybersecurity, CrowdStrike protects the people, processes and technologies that drive modern organizations. Since 2011, our mission hasn’t changed — we’re here to stop breaches, and we’ve redefined modern security with the world’s 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. We're 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. We’re 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

Our Senior 1 title at CrowdStrike is often equivalent to Staff-to-Principal titles elsewhere in scope, impact and overall technical challenge. This role is for an experienced leader of major initiatives accustomed to owning their services/designs soup to nuts/end to end both in aspects of design through implementation, as well as in terms of operational ownership (i.e. "you build it, you run it"). You’ll be joining the cloud backend team in the Platform product group responsible for authentication and authorization. The Auth team is responsible for both internal (e.g. Service-to-service authorization, etc.) and external (e.g. user login, etc) authN and authZ. The team is a critical part of our flagship product group supporting the Falcon Platform, frequently working collaboratively with many other product groups. The team builds and extends services that are capable of making millions of decisions per second (most recently benchmarked at 19 million TPS)!

This role is hybrid, requiring 2-3 days per week on-site at one of the posted locations.

What You’ll Do

• 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.
• Obsess about learning, and champion the newest technologies & tricks with others, raising the technical IQ of the team.
• Be mentored and mentor other developers on web, backend and data storage technologies and our system.
• Constantly re-evaluate our product to improve architecture, knowledge models, user experience, performance and stability.
• Be an energetic ‘self-starter’ with the ability to take ownership and be accountable for deliverables.
• Use and give back to the open source community.

What You’ll Use

• Go (Golang)
• OAuth
• Python
• AWS
• Kafka
• GIT
• Cassandra
• ElasticSearch
• Redis
• Postgres
• ZMQ
• AWS Cloud
• GraphQL

What You’ll Need

• Necessary criteria to obtain GovCloud Access: (most typically, either Citizenship or PR/GC status)
• 8+ years of backend object-oriented development experience in production, with any of: Golang, Java, Scala, Node.js, Python or C# (.NET Core).
• Experience with AuthN and AuthZ
• Experience with FGA (Fine-Grained Auth rules)
• Recent experience building high scale event driven microservices architecture (at least 5M events/day +)
• The ability to scale backend systems – sharding, partitioning, scaling horizontally are second nature to you.
• Degree in Computer Science (or commensurate experience in data structures/algorithms/distributed systems).
• The desire to ship code and the love of seeing your bits run in production.
• Deep understanding of distributed systems and scalability challenges.
• Deep understanding of multi-threading, concurrency, and parallel processing technologies.
• Team player skills – we embrace collaborating as a team as much as possible.
• A thorough understanding of engineering best practices from appropriate testing paradigms to effective peer code reviews and resilient architecture.
• The ability to thrive in a fast paced, test-driven, collaborative and iterative programming environment.
• The skills to meet your commitments on time and produce high quality software that is unit tested, code reviewed, and 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.

Bonus Points

• Experience with Fine Grained Access Control mechanisms like OpenFGA or Zanzibar
• Authored and led successful open source libraries and projects.
• Contributions to the open source community (GitHub, Stack Overflow, blogging).
• Existing exposure to Go, Scala, AWS, Cassandra, Kafka, Elasticsearch...
• Prior experience in the cybersecurity or intelligence fields

This role will require the candidate to periodically undergo and pass additional background and fingerprint check(s) consistent with government customer requirements.

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.

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