Hybrid
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…
Skills: Go, Rust, TCP, UDP, IP
London, England, United Kingdom · Hybrid
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…
Skills: Artificial Intelligence, Python, JavaScript, REST APIs, Prompt Engineering
Austin, Texas, United States · Hybrid
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…
Skills: Team Leadership, Talent Development, Go-To-Market Strategy, Revenue Growth, SaaS Metrics
Austin, Texas, United States · Hybrid
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…
Skills: Distributed Systems Architecture, Threat Intelligence, Go, TypeScript, Kubernetes
Austin, Texas, United States · Hybrid
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…
Skills: Go, JavaScript, Distributed Systems, AI-Assisted Development, Agentic AI Workflows
Hybrid
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…
Skills: Product Security, Application Security, Threat Modeling, Vulnerability Management, AI/LLM Integration
Austin, Texas, United States · Hybrid
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…
Skills: AI-assisted Development, Agentic AI Workflows, Distributed Systems, RESTful APIs, gRPC
Hybrid
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…
Skills: Distributed Systems, Go, SQL, Prometheus, Grafana
Hybrid
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…
Skills: Golang, Distributed Systems, SQL, ClickHouse, GraphQL
Hybrid
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…
Skills: Go, Distributed Systems, Scalable APIs, Prometheus, Grafana
Austin, Texas, United States · Hybrid
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…
Skills: Distributed Systems, Databases, Golang, Python, C++
Hybrid
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…
Skills: Data Analysis, Network Traffic Analysis, SQL, Python, Threat Intelligence
Hybrid
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…
Skills: Data Center Operations, Network Engineering, Linux Systems Administration, Python, Bash
Hybrid
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…
Skills: Sales acumen, Technical understanding, Pipeline management, Forecasting, Contract negotiation
San Francisco, California, United States · Hybrid
$231k–$300k/yr
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…
Skills: Web Security, Networking, Cloud Infrastructure, AI-Native Development, Technical Discovery
Austin, Texas, United States · Hybrid
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…
Skills: Rust, Go, C, C++, BGP
Austin, Texas, United States · Hybrid
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…
Skills: Engineering Management, Software Engineering, BGP, IP Networking, Distributed Systems
London, England, United Kingdom · Hybrid
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…
Skills: Rust, C, Go, Python, Computer Networking
Hybrid
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…
Skills: Vendor Management, Procurement Operations, Supplier Quality, Operational Program Management, Data Analysis
Hybrid
$167k–$264k/yr
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…
Skills: Application Security, Cloudflare Workers, Workers AI, Terraform, Infrastructure as Code
Sign up with Clera and we'll reach out the moment a role actually fits you — no more spraying applications into the void.
You will take shared ownership of a critical, high-scale L4 proxy and help evolve it into the next generation of Cloudflare's non-HTTP traffic platform. Responsibilities include managing the edge dataplane, control plane configuration, cross-dataplane integrations, and maintaining operational excellence.
Candidates should have strong experience building large-scale, reliable distributed systems and proficiency in Go. A solid understanding of L3/L4 networking, Linux networking primitives, and experience operating production systems is required.
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.
At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in.
Available Locations: Austin, TX
Cloudflare's Packet Processing team builds and operates the L3/L4 dataplane services that sit at the front door of our global network. We own the systems that receive, inspect, route, and forward every packet entering Cloudflare — from DDoS-scrubbed IP transit to TCP/UDP application traffic — across every colo in the world. Our work spans Unimog (Cloudflare's L4 load balancer that steers traffic to the right machine in every datacenter), Magic Transit and Cloudflare WAN (our IP-layer DDoS protection and private connectivity products), and Spectrum (our L4 reverse proxy for arbitrary TCP and UDP applications). Together, these systems form the packet-processing foundation of the Traffic Management organization.
We are a team of engineers who obsess over performance, correctness, and reliability at massive scale. We work close to the metal, we own what we build in production, and we take pride in shipping systems that "just work" for a very large fraction of the internet.
Spectrum is Cloudflare's Layer 4 reverse proxy — the front door for arbitrary TCP and UDP traffic. It gives customers Cloudflare's DDoS mitigation, anycast performance, TLS termination, and global footprint for any TCP or UDP application: gaming servers, SSH, MQTT, custom protocols, and TLS-terminated services of every shape. Spectrum's edge dataplane runs across every Cloudflare colo, terminating and forwarding a very large volume of concurrent connections per second, and its control plane manages configuration, provisioning, and integration with adjacent Cloudflare systems.
As a member of Spectrum in the Packet Processing team, we're looking for a Systems Engineer who wants to take shared ownership of a critical, high-scale L4 proxy and help evolve it into the next generation of Cloudflare's non-HTTP traffic platform. This is a rare opportunity to work on a product with massive existing scale while helping shape where it goes next as a first-class part of our L3/L4 dataplane story.
Some of the things you'll work on:
You'll partner closely with the rest of Packet Processing, other Traffic Management teams, DDoS, DNS, Core SRE, and Edge SRE to solve problems that span the entire Cloudflare stack.
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.
Athenian Project: 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!
Please note that applicants who progress to the offer stage of the interview process may be asked to attend an in-person interview within one of the Cloudflare Offices or Cloudflare Hubs. More details about this will be available at that stage of the interview process.
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 [email protected] or via mail at 101 Townsend St. San Francisco, CA 94107.
At Cloudflare, we have our eyes set on an ambitious goal — to help build a better Internet.
Cloudflare, Inc. (NYSE: NET) is the leading connectivity cloud company. It empowers organizations to make their employees, applications and networks faster and more secure everywhere, while reducing complexity and cost. Cloudflare’s connectivity cloud delivers the most full-featured, unified platform of cloud-native products and developer tools, so any organization can gain the control they need to work, develop, and accelerate their business. Powered by one of the world’s largest and most interconnected networks, Cloudflare blocks billions of threats online for its customers every day. It is trusted by millions of organizations – from the largest brands to entrepreneurs and small businesses to nonprofits, humanitarian groups, and governments across the globe.
Offices: 101 Townsend St, San Francisco, California 94107, US · Westminster Bridge Road, 6th Floor, Riverside Building, County Hall, London, England SE1 7PB, GB · 120 Robinson Road, Frasers Tower #35-01, Singapore, Singapore 069547, SG · 405 Comal St, Austin, Texas 78702, US · 10 Almaden Blvd, Suite 200, San Jose, California 95113, US
At Cloudflare, we have our eyes set on an ambitious goal — to help build a better Internet.
Cloudflare, Inc. (NYSE: NET) is the leading connectivity cloud company. It empowers organizations to make their employees, applications and networks faster and more secure everywhere, while reducing complexity and cost. Cloudflare’s connectivity cloud delivers the most full-featured, unified platform of cloud-native products and developer tools, so any organization can gain the control they need to work, develop, and accelerate their business. Powered by one of the world’s largest and most interconnected networks, Cloudflare blocks billions of threats online for its customers every day. It is trusted by millions of organizations – from the largest brands to entrepreneurs and small businesses to nonprofits, humanitarian groups, and governments across the globe.
Offices: 101 Townsend St, San Francisco, California 94107, US · Westminster Bridge Road, 6th Floor, Riverside Building, County Hall, London, England SE1 7PB, GB · 120 Robinson Road, Frasers Tower #35-01, Singapore, Singapore 069547, SG · 405 Comal St, Austin, Texas 78702, US · 10 Almaden Blvd, Suite 200, San Jose, California 95113, US
