Senior Software Engineer, Network On-Ramps

CloudFlare; Canada; Hybrid; CAD 208,000 - 292,000; Full time

Job summary

Cloudflare is seeking a Senior Software Engineer for Network On-Ramps. You will work on distributed, high-performance networking systems, shipping features across Linux networking stacks and edge networks.

The role involves Go and Rust, RESTful APIs, and cross-team collaboration to deliver scalable solutions for customers. You’ll contribute to Flow, log collection, and datastreams, while building robust control planes and data pipelines to support Cloudflare’s global network.

Qualifications

• Experience building and shipping large-scale, reliable, highly distributed systems.
• Systems-level programming experience, especially in Go and Rust.
• Expertise in L3 and L4 networking protocols.
• Experience building on top of Linux kernel networking primitives – netfilter, nftables, eBPF, tc, network namespaces, etc
• Experience designing and integrating RESTful APIs and backend systems.
• Experience with large-scale distributed data pipelines, from data structuring to efficient querying to data analysis.
• Excellent debugging and optimization skills.
• Attention to detail and ability to solve complex customer problems.
• Own solutions end‑to-end and driving the design, development, and deployment process.
• Able to work across teams and level common, sustainable solutions.
• Creative, open‑minded, collaborative problem solver.
• Focus on clarity in written and verbal communication.

Responsibilities

• Develop and deliver features across a wide range of networking systems.
• Improve performance and scalability of Cloudflare Network Services.
• Build, deploy, and operate team systems on one of the world's largest edge networks.
• Collaborate with engineers and product managers to solve big problems for customers.

Skills

Distributed systems

Go

Rust

L3/L4 networking

Linux kernel

REST APIs

Data pipelines

Debugging

Cross-team collaboration

Communication

Tools

netfilter

nftables

eBPF

tc

network namespaces

Job description

Senior Software Engineer, Network On-Ramps

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 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.

Location: Austin, Champaign

About The Team:

Cloudflare is redefining the way networks are run at scale. Our Network Services product suite puts the connectivity, scale, and performance of Cloudflare’s global network in front of customers’ network infrastructure and private networks, providing a single pane of glass for network connectivity, visibility, and operating network functions like BGP, WAN optimization, and more. We are a team of engineers and product managers who obsess over quickly building products that solve real customer problems using innovative technologies and techniques which leverage Cloudflare’s unique architecture and global network footprint.

About the role

We are hiring engineers of all experience levels on our teams. Some of the things our teams work on include:

• An anycast BGP implementation that sustains sessions that are moved across servers and regions
• Flow and log collection, correlation, and analytics systems to provide customers with unparalleled visibility into their own networks
• A Linux kernel-based networking dataplane which ingests and forwards traffic from some of the largest networks in the world
• Control plane systems which allow customers to simply express complex network configurations

As a Software Engineer on our team, you will work across a wide range of technologies and systems to deliver new features, improve performance, and increase the scalability of our Network Services products. You'll build, deploy, and operate our team’s systems on top of one of the largest edge networks in the world. You'll partner with some of the best engineers and product managers to solve big problems that have a meaningful impact in the lives of our customers and users.

We're looking for curious, empathetic engineers who are excited to join us in changing the way networking is done!

Examples of desirable skills, knowledge, and experience

• Experience building and shipping large-scale, reliable, highly distributed systems
• Systems‑level programming experience, especially in Go and Rust
• Expertise in L3 and L4 networking protocols
• Experience building on top of Linux kernel networking primitives – netfilter, nftables, eBPF, tc, network namespaces, etc
• Experience designing and integrating RESTful APIs and backend systems
• Experience with large-scale distributed data pipelines, from data structuring to efficient querying to data analysis
• Excellent debugging and optimization skills
• Attention to detail and ability to solve complex customer problems
• Own solutions end‑to‑end and driving the design, development, and deployment process
• Able to work across teams and level common, sustainable solutions
• Creative, open‑minded, collaborative problem solver
• Focus on clarity in written and verbal communication

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.

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.

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