Software Engineer - Trust & Safety

Posted on Mar 02, 2023

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Job Details

Full Time
🇬🇧 United Kingdom

About Cloudflare

Help Build a Better Internet. At Cloudflare, we have our eyes set on an ambitious goal: to help build a better Internet. Today the company runs one of the world’s largest networks that powers approximately 25 million 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!

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.
  • Path Forward Partnership: Since 2016, we have partnered with Path Forward, a nonprofit organization, to create 16-week positions for mid-career professionals who want to get back to the workplace after taking time off to care for a child, parent, or loved one.
  • We released 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!

Cloudflare is proud to be an equal opportunity employer. We are committed to providing equal employment opportunities 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 or via mail at 101 Townsend St. San Francisco, CA 94107.

The Position

Engineers on the Trust & Safety Engineering team are responsible for the entire software development lifecycle for our products and services which include both internal and customer-facing software. Whether closing gaps in our abuse processing pipeline, extending our Trust & Safety platform or road mapping the future of Trust & Safety solutions, software engineers on the Trust & Safety Engineering team are critical to Cloudflare’s ability to help make the internet a better place.

About the team

Cloudflare’s mission is to help build a better internet and the Trust & Safety Engineering (TSENG) team lives at the core of that effort. The team empowers customers with products and services to combat abuse, enables deeper coordination with our external industry anti-abuse partners, and ensures that teams in the company can respond to the quickly changing legal landscape of the internet with scalable tools and services. This includes services that have a direct impact on efforts to stop the spread of CSAM (child sexual abuse material) across the internet.

What you'll do

While the majority of our services are now written in Golang, you will also work with technologies such as Rust, PHP, Lua, Salt, Kafka, Redis, Kubernetes, Terraform, Airflow, Cadence, Temporal and PostgresSQL. We are looking for great engineers regardless of experience with any of these specific technologies.

Responsibilities include

  • Designing, building, running and scaling tools and services that support Trust and Safety efforts
  • Analyzing and communicating complex technical requirements and concepts, able to identify the highest priority areas and carve a path to deliver
  • Collaborating with product teams to understand goals and develop robust and scalable solutions that align with the customer need
  • Improving system design and architecture to ensure stability and performance of the internal and customer-facing compliance and anti-abuse services (handling upto 100K events per second)
  • Ongoing monitoring and maintenance of production services, including participation in oncall rotations
  • Working closely with Cloudflare's Trust and Safety team to help make the internet a safer place
  • Mentoring and guiding developers in the Trust and Safety Engineering team to help build collective knowledge and technical expertise


Desirable skills and experience

  • More than 5 years of experience building large-scale software applications, preferably distributed systems
  • Experience designing and integrating RESTful APIs and/or gRPC services
  • Knowledge of SQL and common relational database systems such as PostgreSQL and MySQL
  • Prior experience working with Rust and Go
  • Excellent debugging and optimization skills
  • Expertise in writing well tested code
  • Interest in opportunities to be a technical mentor for teammates
  • Bonus

(Relevant but not required - we love to learn on the job!)

  • Understanding of DNS, TLS/SSL and HTTP
  • Understanding of web security issues and industry standards for access control
  • Experience with Kafka
  • Experience building web applications using React
  • Experience with Kubernetes
  • Experience with PHP
  • Experience with Redis

Our Hiring Process

  1. Initial conversations
  2. Team/panel interviews
  3. Executive call(s)
  4. Offer
  5. Orientation

Meeting the Team

We've designed our hiring process so that you have the opportunity to meet a variety of Cloudflare team members that you will work directly with: your prospective manager, peers from the team, and key stakeholders.

These conversations will help us understand how you think, what you’re passionate about, as well as which skills and creative problem-solving abilities you bring to the table. We also want you to get to know us too — our interviewers will be ready to answer all of your questions!

Orange Cloud Interview

During the hiring process you’ll have an Orange Cloud Interview which will focus on the Cloudflare Capabilities and the behaviors that we value. The interviewer will ask you to share examples of how you do your work and make an impact, rather than assessing your role-specific skills, knowledge, or experience.

So, how do you prepare for this interview? Consider how you display these values in your everyday work, reflect on recent situations at work, whether you’ve learnt from these experiences, and if you’d do anything differently if they were to happen again.


We want to empower and inspire our team members to do their best work every day - making sure they feel happy, healthy and fulfilled both inside and outside of the workplace.

  • Competitive pay. We offer a competitive total rewards package, where every employee is an owner of our stock.
  • Take-what-you-need vacation. We encourage employees to find a comfortable work-life balance by taking as many days off as they need while still being able to perform their jobs satisfactorily. (We really mean it!)
  • Paid maternity & paternity leave. Our global parental leave policy allows up to sixteen paid weeks of bonding leave time for all qualifying new parents.
  • Employee benefits. We offer a comprehensive benefits package including healthcare, life insurance, short- and long-term disability, pension plans in accordance with the market practice in our locations.
  • Commuter program. We are flexible about where we work and value connecting at the office. Our commuter benefits program is in place to support team members' commute to work via public transportation without the extra cost burden.
  • Wellbeing. Global offerings that provide mental health, childcare and family forming support to our employees across our offices.
Software Engineer - Trust & Safetyat Cloudflare