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Application Security Engineer

Job in London, Laurel County, Kentucky, 40741, USA
Listing for: Cloudflare
Full Time position
Listed on 2025-12-09
Job specializations:
  • IT/Tech
    Systems Engineer, Technical Support, Cybersecurity, Cloud Computing
Job Description & How to Apply Below

Position Title:
Application Security Engineer

About Us

At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the worlds largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code.

Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazines Top Company Cultures list and ranked among the Worlds Most Innovative Companies by Fast Company.

We realize people do not fit into neat boxes. We are looking for curious and empathetic individuals who are committed to developing themselves and learning new skills, and we are ready to help you do that. We cannot complete our mission without building a diverse and inclusive team. We hire the best people based on an evaluation of their potential and support them throughout their time e join us!

Available

Locations:
London (or remote UK), Lisbon (or remote Portugal) About the role

Cloudflare Professional Services provides advisory and hands‑on‑keyboard implementation and migration services for enterprise customers. As an Application Security Engineer, you are an individual contributor working in the post‑sales landscape, responsible for the technical execution of solutions and guidance to our customers to get the most value possible from their Cloudflare investment. You are an expert in Layer 7 products like: DDoS Protection, WAF, API Gateway, Bot Management, Certificates Manager, Rate Limiting, SSL and Page Shield.

This position has working hours Monday to Friday 09:00 a.m. to 06:00 p.m. Occasionally, we support our customers during the weekends for specific changes that need to be done outside of their business hours. Travel is expected around 30 %.

What you will do
  • Plan and deliver timely and organized services for customers, ensure customers see the full value in Cloud flares products and advice on product best practices
  • Gather business and technical requirements, use cases and any other information required to build, migrate and deliver a solution on behalf of the customer and transition the Cloudflare working environment to the customer. Produce a Solution Design, HLD, LLD, data builds, procedures, scripts, test plans, drawings, deployment plan, migration plan, as‑builts, and any other artifacts necessary to deliver the solution and transition smoothly into the customers technical teams
  • Implement changes on behalf of the customer in the Cloudflare environment following the customers change management process. Provide guidance to the customer to configure their CPEs and integration points
  • Troubleshoot implementation issues and collaborate with Customer Support, Engineering and other teams to assist technical escalations
  • Contribute towards the success of the organization through knowledge sharing activities such as contributing to internal and external documentation, answering technical Q&A, and helping to iterate on best practices. Support building operational assets like templates, automation scripts, procedures, workflows, etc
Experience might include a combination of the skills below
  • 5+ years of experience in a customer facing position as a Customer Engineer, Security Engineer, Implementation Engineer, Onboarding Engineer, Consultant, Technical Support Engineer, Solutions Architect, and/or Systems Engineer
  • Layers and protocols of the OSI model, such as TCP/IP, TLS, DNS, HTTP
  • Understanding of Internet and Security technologies such as DDoS, Web Application Firewall, Certificates, DNS, CDN, Analytics and Logs
  • Demonstrated experience with a scripting language (e.g. Python, JavaScript, Bash) and a desire to expand those skills
  • Demonstrated experience with security aspects of an internet property, such as DNS, WAFs, Bot Management, Rate Limiting, (M)
    TLS and…
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