Sr. Frontend Engineer – Counter Adversary Operations Team (Hybrid, UK)

Company: CrowdStrike Holdings, Inc.
Apply for the Sr. Frontend Engineer – Counter Adversary Operations Team (Hybrid, UK)
Location: London
Job Description:

About the Role

The Counter Adversary Operations (CAO) Team combines CrowdStrike Falcon® Intelligence and the CrowdStrike® Falcon OverWatch™ threat hunting team to disrupt adversaries using the platform’s trillions of telemetry events. We are looking for a Sr. Front‑end Software Engineer to build globally distributed, robust and customer‑centric solutions that provide a high‑quality user experience for our worldwide customers. You will use Ember for the JavaScript framework, but experience with React, Angular or Vue.js is also welcome. Our web platform supports evergreen browsers, allowing us to push the boundaries of what’s possible on the web while handling massive amounts of data.

What You’ll Do

  • Hands‑on engineering – building single‑page applications in Ember
  • Leverage your technical expertise to help the team make sound decisions around engineering, product direction and design
  • Take initiative and build tools that improve your teams’ development experience
  • Write automated tests for your code
  • Collaborate with UX Engineers, Cloud Engineers, UX Designers, User Researchers, QA Analysts, Product Managers, and others
  • Continually learn about the ever‑evolving challenges and complexities of the cybersecurity industry
  • Have fun solving hard problems

What You’ll Need

  • Good understanding of JavaScript and experience building web application user interfaces with modern frameworks such as Ember, React, Angular or Vue.
  • Strong HTML & CSS skills, including experience with CSS pre‑ or post‑processors (e.g., Sass or PostCSS) and CSS frameworks like Tailwind CSS.
  • Experience with testing frameworks, tools and methodologies such as QUnit or Mocha.
  • Knowledge & interest in developing genuinely accessible interfaces.
  • Comfortable with Git or similar version control systems and workflows.
  • A desire to work closely with others to deliver quality software and solve problems.

Bonus Points

  • Familiarity with client‑side build processes and tools (e.g., Ember CLI, Webpack, etc.)
  • Experience creating or contributing to open‑source projects.
  • Experience with graphics and visualization tools such as D3 or Three.js.
  • Experience with UI performance measurement and optimization.
  • Experience with web accessibility testing and support.
  • Familiarity with Amazon Web Services.
  • Prior experience in cybersecurity.
  • Prior experience building enterprise software as a service.

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.

Equal Employment Opportunity Statement

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. If you need assistance accessing or reviewing the information on this website or need help submitting an application for employment or requesting an accommodation, please contact us at recruiting@crowdstrike.com for further assistance.

#J-18808-Ljbffr…

Posted: June 1st, 2026