About CrowdStrike

CrowdStrike is a global leader in cybersecurity, protecting people, processes, and technologies that power modern organizations. Since 2011, our unwavering mission has been to stop breaches using the world's most advanced AI-native platform, the CrowdStrike Falcon® platform. We process nearly 3 trillion events daily, with traffic growing relentlessly, serving customers across all industries who rely on us to keep businesses running, communities safe, and lives moving forward.

We're a mission-driven company fostering a culture of flexibility and autonomy, empowering every CrowdStriker to own their career. With limitless passion for innovation and fanatical commitment to customers, community, and each other, we're always seeking talented individuals to join our team. The future of cybersecurity starts with you.

Role Overview

As a Sr. Frontend Engineer on the Counter Adversary Operations (CAO) Team in London, UK (hybrid), you'll build globally distributed, robust, customer-centric solutions. The CAO Team combines CrowdStrike Falcon® Intelligence and Falcon OverWatch™ threat hunting to disrupt adversaries and raise their cost of operations. Leveraging trillions of telemetry events from the Falcon platform, we detect, disrupt, and stop threats with unmatched expertise.

You'll deliver high-quality user experiences for 24/7 global use, primarily using our Ember JavaScript framework. Experience with React, Angular, or Vue.js is transferable—we'll onboard you seamlessly. Supporting only evergreen browsers, we push web platform boundaries with massive data. Join a collaborative, inclusive, diverse team in a remote-first, high-trust environment where you own product delivery, architecture, and stakeholder coordination.

Key Responsibilities

Hands-On Development

Engineer single-page applications in Ember, ensuring scalable, performant UIs for cybersecurity tools.

Technical Leadership

Leverage expertise to guide engineering decisions, product direction, and design, taking full ownership of deliveries.

Tooling and Testing

Build tools improving team development experience and write comprehensive automated tests.

Cross-Functional Collaboration

Partner with UX Engineers, Cloud Engineers, Designers, Researchers, QA, and Product Managers to solve complex problems.

Continuous Learning

Stay ahead of cybersecurity challenges while having fun tackling hard problems in a dynamic space.

Qualifications & Requirements

To succeed, bring a solid JavaScript foundation and experience crafting web UIs with modern frameworks like Ember, React, Angular, or Vue. Strong HTML & CSS skills are essential, including preprocessors (Sass, PostCSS) and frameworks like Tailwind CSS. Proficiency in testing with QUnit or Mocha, accessible interface development, Git workflows, and a collaborative mindset are key.

Bonus Points: Client-side build tools (Ember CLI, Webpack), open-source contributions, D3/Three.js graphics, UI performance optimization, web accessibility testing, AWS familiarity, or cybersecurity background.

Benefits & Perks

CrowdStrike offers a remote-first culture with high trust, letting you manage your time and balance work-life seamlessly. Enjoy hybrid flexibility in London, competitive compensation (estimated £110,000-£180,000 GBP annually), and global impact. Our inclusive environment prizes collaboration, providing mentorship, skill-building, and influence over team and product direction.

Career Growth

Grow with a company that invests in your development. Mentor peers, contribute to architecture, and shape products disrupting adversaries. In our high-trust setting, autonomy fuels rapid career progression amid cybersecurity's evolution. Access learning resources, cross-team projects, and leadership opportunities to advance as a technical expert.

Why Join CrowdStrike

Join to work on mission-critical tech stopping breaches via the Falcon platform. Be part of CAO's elite team raising adversary costs with intelligence and threat hunting. Thrive in a friendly, diverse group focused on innovation, customer success, and community. With 24/7 global reliance on our solutions, your work protects the world—while enjoying flexibility, autonomy, and fun in solving cybersecurity's toughest challenges.

Role FAQs

Is Ember.js experience required?

No, but JavaScript framework experience (React, Angular, Vue) is essential; we'll train you on Ember.

What's the work setup?

Hybrid in London, UK, within a remote-first, distributed environment with high flexibility.

Do I need cybersecurity experience?

Preferred but not required; passion for the industry and quick learning are key.

How does the team collaborate?

Highly collaborative with UX, engineering, design, QA, and PMs in an inclusive, non-competitive culture.

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