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Network Security Engineer - job 2 of 3

About Us

At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s 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 Magazine’s Top Company Cultures list and ranked among the World’s 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 at Cloudflare. Come join us! 

Available Locations: Singapore, or Kuala Lumpur, Malaysia

About the Team

The Cloudflare Customer Support Team solves complicated problems and answers technical questions via phone, email, chat and social media. Whether it is a Wordpress blogger using our services for free or a global Enterprise business with petabytes of web traffic, we are always eager to assist. We are the eyes and ears of Cloudflare, acting as the real-time voice of the customer to help communicate their needs and real-world use cases back to the rest of the company - for better service and future product development.

What You'll Do

Do you love solving complex technical issues and interacting with people? Are you passionate about providing premium-level support to customers and are a standout colleague? Cloudflare is seeking an experienced Network Security Engineer to join our team and support our largest and most technically sophisticated customers in resolving technical problems, threats or attacks on their infrastructure at OSI Layers 3, 4, and 7. This will span the range of Cloudflare products from Magic Transit Infrastructure Protection, Argo Smart Routing, DDoS mitigation and Network Firewall, to using the Web Application firewall (WAF), Spectrum and Rate Limiting to help customers.

  • Serve as a trusted technical advisor for our enterprise customers, responding to and resolving inquiries and incidents related to network security and performance, while delivering timely, high-quality and personalized assistance.
  • Work directly with customers to diagnose, troubleshoot and resolve complex technical issues involving DDoS mitigation, firewall rules, SSL/TLS, network confirmation, and other security configurations.
  • Create and maintain knowledge base articles, technical guides, and troubleshooting documentation for internal and customer use.
  • Compare traffic signatures and attributes including IP addresses, cookie variations, HTTP headers, and JavaScript footprints to determine what is good traffic and what is malicious
  • DDoS mitigation for OSI layers 3,4, & 7: advise customers on how to filter malicious traffic using Cloudflare tools like Magic Transit, Network Firewall, WAF, IP reputation lists, packet inspection, blocklisting, allowlisting, and rate limiting
  • Work with Engineering and Product teams to improve products and tools

What We're Looking For

  • You have a minimum of 4 years experience working as a Network Security Engineer / Technical Support Engineer / Sr. Support Engineer supporting networking or web security products.
  • Exceptional troubleshooting and problem-solving skills, with the ability to simplify complex concepts for customers.
  • Strong customer service orientation and communication skills, both written and verbal, fluent in English and preferably a second language like Mandarin, Hindi, Tamil, Korean or Japanese.
  • Ability to work independently and collaboratively in a fast-paced, dynamic environment.
  • Strong understanding of network protocols, including TCP/IP, DNS, HTTP/S, and BGP, with a particular focus on anycast routing concepts and implementation, as well as tools such as iptables and looking glass.
  • Proven experience troubleshooting network connectivity issues, BGP routing, and GRE tunnels, and performing packet capture analysis
  • Confident with command line and tools, including curl, dig, traceroute, openssl, git
  • Experience in a web development and / or hosting environment such as installing and configuring web servers like Apache, Nginx, Caddy and IIS
  • You are competent writing scripts in Bash, Python, JavaScript or other scripting language
  • You have worked with PostgreSQL, MySQL, MS SQL, and other database servers
  • Bachelor’s degree in Computer Science, Cybersecurity, or a related field (or equivalent experience).
  • Relevant certifications such as CISSP, GCIA GCIH, GCFA, GCFE or equivalent.

What Makes Cloudflare Special?

We’re not just a highly ambitious, large-scale technology company. We’re a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.

Project Galileo: We equip politically and artistically important organizations and journalists with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare’s enterprise customers--at no cost.

Athenian Project: We created Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration.

1.1.1.1: We released 1.1.1.1 to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Here’s the deal - we don’t store client IP addresses never, ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers.

Sound like something you’d like to be a part of? We’d love to hear from you!

This position may require access to information protected under U.S. export control laws, including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license.

Cloudflare is proud to be an equal opportunity employer.  We are committed to providing equal employment opportunity for all people and place great value in both diversity and inclusiveness.  All qualified applicants will be considered for employment without regard to their, or any other person's, perceived or actual race, color, religion, sex, gender, gender identity, gender expression, sexual orientation, national origin, ancestry, citizenship, age, physical or mental disability, medical condition, family care status, or any other basis protected by law. We are an AA/Veterans/Disabled Employer.

Cloudflare provides reasonable accommodations to qualified individuals with disabilities.  Please tell us if you require a reasonable accommodation to apply for a job. Examples of reasonable accommodations include, but are not limited to, changing the application process, providing documents in an alternate format, using a sign language interpreter, or using specialized equipment.  If you require a reasonable accommodation to apply for a job, please contact us via e-mail at hr@cloudflare.com or via mail at 101 Townsend St. San Francisco, CA 94107.

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What You Should Know About Network Security Engineer, Cloudflare

Are you ready to take your career to the next level as a Network Security Engineer with Cloudflare? At Cloudflare, we're dedicated to building a better Internet and protecting millions of websites for clients ranging from individual bloggers to Fortune 500 companies. In this hybrid role, you'll provide top-tier support to our customers, tackling complex technical issues and threats aimed at their infrastructures at OSI Layers 3, 4, and 7. Your expertise will be invaluable as you help diagnose and troubleshoot DDoS attacks, firewall configurations, and much more. With a strong focus on customer service, you'll become a trusted advisor, crafting personalized solutions to meet their unique challenges. Not only will you be on the front lines solving problems, but you'll also have the chance to contribute to our knowledge base and refine our processes alongside talented peers. In a rapidly changing environment, adaptability and a passion for learning are key, as you will be working directly with cutting-edge Cloudflare products. If you are experienced, empathetic, and ready to work in a collaborative team atmosphere, this role at Cloudflare is a perfect fit for you. With locations in Singapore and Kuala Lumpur, we welcome individuals who are excited to drive innovation and embrace a diverse and inclusive work culture. Join us, and let’s make the Internet a safer place together!

Frequently Asked Questions (FAQs) for Network Security Engineer Role at Cloudflare
What are the main responsibilities of a Network Security Engineer at Cloudflare?

As a Network Security Engineer at Cloudflare, your primary responsibilities include troubleshooting technical issues related to network security and performance, providing expert guidance on DDoS mitigation and firewall rules, and serving as a trusted advisor to enterprise customers. You'll work with various Cloudflare products, helping to diagnose incidents and improve security configurations.

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What qualifications are required for the Network Security Engineer position at Cloudflare?

To be considered for the Network Security Engineer role at Cloudflare, candidates should have a minimum of 4 years experience in a similar position. A strong understanding of network protocols, excellent troubleshooting skills, and experience with tools like iptables and various scripting languages are essential. Certifications such as CISSP, GCIA, or GCIH are also preferred.

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What skills are crucial for success as a Network Security Engineer at Cloudflare?

Crucial skills for a Network Security Engineer at Cloudflare include exceptional problem-solving capabilities, strong customer service orientation, and proficiency in diagnosing networking issues. Familiarity with TCP/IP, DNS, HTTP/S, and experience with web server environments (like Apache or Nginx) are also important to thrive in this role.

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What is the work environment like for a Network Security Engineer at Cloudflare?

At Cloudflare, the work environment for a Network Security Engineer is dynamic and collaborative. You'll be part of a diverse team dedicated to innovation and solving complex challenges in network security. The hybrid setup allows for flexibility while still providing opportunities for teamwork and professional growth.

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How does Cloudflare support the continuous learning of its Network Security Engineers?

Cloudflare places great emphasis on continuous learning and development for its Network Security Engineers. The company encourages employees to expand their skill sets through training, certifications, and access to internal knowledge base resources. Cloudflare’s culture promotes curiosity and ongoing education, creating a supportive environment for personal and professional growth.

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Common Interview Questions for Network Security Engineer
Can you describe your experience with DDoS mitigation techniques?

When answering this question, detail specific techniques you've employed in previous roles, including tools and strategies like traffic filtering and rate limiting. Highlight your hands-on experience with Cloudflare products, if applicable, and demonstrate your understanding of how these techniques can effectively protect against attacks.

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How do you approach troubleshooting complex network issues?

Your answer should reflect a systematic approach to problem-solving. Explain how you gather information, analyze potential causes, and conduct tests. Share relevant examples from past experiences where you successfully identified root causes and implemented solutions.

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What scripting languages are you proficient in, and how have you used them in your past roles?

Mention specific scripting languages such as Bash, Python, or JavaScript. Provide examples of complex tasks you've automated using scripts, showcasing your technical skills and ability to enhance efficiency in technical environments.

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How do you stay updated on the latest trends and threats in network security?

Discuss your commitment to ongoing education, such as attending industry conferences, participating in online forums or webinars, and reading relevant publications. Emphasize your proactive approach to staying informed about emerging threats and security best practices.

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Describe a situation where you had to communicate a technical concept to a non-technical customer.

Provide an example where you successfully simplified a complex topic for a customer, focusing on how you used layman's terms and visual aids. Highlight the importance of effective communication and empathy in fostering customer relationships.

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What experience do you have with web application firewalls (WAF)?

Discuss specific WAF technologies you've used, your understanding of their functions, and how you've configured or managed them. If relevant, mention any experiences you have protecting applications from common vulnerabilities.

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How would you handle a disagreement with a team member on a security strategy?

In your response, show that you value collaboration by highlighting the importance of listening to different viewpoints. Describe your problem-solving approach, focusing on how you would seek common ground and arrive at a consensus through constructive dialogue.

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Can you provide an example of how you've improved a process in your prior roles?

Share a specific instance where you identified an inefficiency and implemented changes that had a positive impact on workflow or security outcomes. Articulate the steps you took and the measurable results achieved.

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What is your familiarity with network protocols like BGP?

Explain your understanding of BGP, its importance in routing, and any direct experience you have working with it. Be sure to mention specific scenarios where you've troubleshooted or configured BGP to overcome network challenges.

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Why do you want to work as a Network Security Engineer for Cloudflare?

Articulate your passion for technology and the internet, as well as your admiration for Cloudflare's mission to build a better Internet. Explain how your skills and experiences align with the company's values and how you can contribute to its ongoing success.

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Cloudflare is on a mission to help build a better Internet. Today the company runs one of the world’s largest networks, with nearly 10 percent of the Fortune 1,000 as paying customers and approximately 19 percent of the top 10,000 websites using a...

333 jobs
MATCH
VIEW MATCH
FUNDING
SENIORITY LEVEL REQUIREMENT
TEAM SIZE
SALARY RANGE
$90,000/yr - $120,000/yr
EMPLOYMENT TYPE
Full-time, hybrid
DATE POSTED
January 28, 2025

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