Remote Senior Security Systems Reliability Engineer

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 Location

Lisbon, Portugal

Job Title 

Security Systems Reliability Engineer

About the Department

The Security team at Cloudflare is focused and committed to helping secure both Cloudflare and our customers. The Security Systems Reliability Engineering team supports tooling and infrastructure across the Security team.

About the Role

As a Security Systems Reliability Engineer, you will play a key role in designing, implementing, managing, and supporting infrastructure and security technologies. You will be responsible for ensuring systems are secure, highly available, fault tolerant, and scale to meet business needs. 

Work may include documenting new standard operating procedures, ensuring vendor recommended security baseline configurations are implemented, designing repeatable deployment patterns, performing disaster recovery testing, performing chaos testing, configuring new integrations, implementing new technologies, patching applications and operating systems, performing upgrades and other maintenance tasks, establishing integrations, documenting the as-built architecture, establishing monitoring and logging, and participating in investigations and service restorations.

As part of our team, you will be expected to:

• Design, implement, and maintain secure infrastructure across various environments (non-production and production).


• Ensure resilient and secure designs are implemented and maintained.


• Drive continuous improvement while maintaining multiple environments. 


• Ensure systems meet performance expectations.


• Engage in proactive risk management and incident response planning.


• Develop or utilize automation to streamline repeatable tasks.


• Ensure company data is managed in a secure and scalable manner.


• Contribute to the creation and dissemination of knowledge about the designs within the company.

Examples of desirable skills, knowledge and experience

Security Systems Reliability Engineers take part in a wide variety of tasks and projects in the team. One individual is not expected to know everything, but a working knowledge in several of the following areas is required: 

• Bachelor's degree in Computer Science, Information Systems, Cybersecurity, related technical field, or equivalent practical experience


• Experience performing the functions of a Site Reliability Engineer (SRE).


• Ability to clearly communicate complex security requirements to stakeholders at all levels


• Ability to navigate ambiguity, and provide clarity to complex situations


• Extensive experience with deploying and administering Kubernetes in an enterprise environment. 


• Extensive experience developing and utilizing Terraform to deploy and update environments through infrastructure as code (IaC). 


• Extensive experience with deploying and administering Linux systems in an enterprise environment. 


• Extensive experience deploying and administering enterprise solutions in GCP, AWS or Azure.


• Experience implementing, integrating, and supporting application security tools within a CI/CD pipeline environment.


• Solid understanding of reliability engineering principles and a commitment to continuous improvement.


• Experience writing scripts, leveraging automation, and creating infrastructure as code to streamline processes.


• Advanced programming experience (Python, Golang, Bash, etc.)


• Strong analytical skills focused on service availability with curiosity and thoroughness in problem-solving.


• Ability to navigate ambiguity, bring clarity to complex situations, and collaborate effectively with various stakeholders.


• Experience working with different security functions as part of a wider team

Bonus Points

• Strong Linux system experience from user-space to kernel-space


• Cross-functional governance experience with programs like PCI-DSS, FedRAMP


• Proficient in managing Application Security related technologies like Veracode, Checkmarx, SonarQube, Snyk, Semgrep, Fortify, or Coverity integrated into CI/CD pipelines.


• Experience with deploying and administering Cloudflare products (access, tunnels, waf) 


• Experience working with large data platforms


• Experience working with data classification schemas at scale


• Experience working with organization wide business ecosystems (Google, Microsoft)

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 : Since 2014, we've equipped more than 2,400 journalism and civil society organizations in 111 countries 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.

: In 2017, we created the 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. Since the project, we've provided services to more than 425 local government election websites in 33 states.

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 View email address on talent.com or via mail at 101 Townsend St. San Francisco, CA 94107.