Cloudflare · 2 weeks ago
Software Engineer - Network Services
Austin, TX
Full-time
Hybrid
Entry, Mid, Senior LevelCloudflare is on a mission to help build a better Internet and operates one of the world’s largest networks. As a Software Engineer - Network Services, you will work on building robust, secure, and high-performance distributed systems that power millions of Internet properties globally.
AnalyticsEnterprise SoftwareSecurityWeb Hosting
Responsibilities
A TLS/HTTP proxy to make the connection from eyeball to edge as fast and secure as possible
Filtering malicious traffic and handling good traffic according to customer configuration
Content optimization that takes content served from customer sites and makes it more performant
A platform that runs “serverless” Workers and provides a key value store
A reverse-proxy system that caches customer website content according to customer configuration
Optimization of connections from Cloudflare to our customers' origin servers to reduce their load and increase performance
Our Authoritative DNS server and our public resolver 1.1.1.1
Data Science diving deep into HTTP request data, identifying malicious and fraudulent traffic patterns, and building novel solutions for mitigating such attacks
Full Machine Learning platform and model development, from feature engineering to model development to release and monitoring
One of the biggest data pipelines in the world, operating at well over 250M events per second
We operate some of the fastest, and most widely distributed services on the Internet. Your work will focus on building robust, secure, and high performance distributed systems
Qualification
Required
First and foremost curiosity and critical thinking
Experience (and love for) debugging to ensure the system works in all cases
Experience with a continuous integration workflow and using source control (we use git)
Designing and building APIs
Understanding of what it takes to build secure systems
Confidence to work in multiple programming languages - bonus points for Go and/or Rust
Preferred
Understanding systems at the network protocol level, including the differences between what the specs say, and what actually happens on the Internet
Strong systems level programming skills
Optimization of complex solutions
Experience with databases (we use PostgreSQL and Clickhouse)
Understanding what it takes to build and maintain distributed systems
Good Unix knowledge, having submitted patches to Operating Systems a huge plus for some roles
Experience with monitoring, alerting and debugging high volume production systems
Fluent in analyses of data sets such as logs
Understanding of security and fraud detection systems
Company
Cloudflare
Cloudflare is a web performance and security company that provides online services to protect and accelerate websites online.
Founded in 2009
1001-5000 employees
H1B Sponsorship
Cloudflare has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (117)
2024 (115)
2023 (66)
2022 (98)
2021 (83)
2020 (37)
Funding
Current Stage
Public CompanyTotal Funding
$2.08BKey Investors
Franklin TempletonFidelityUnion Square Ventures
2025-06-13Post Ipo Debt· $1.75B
2019-09-12IPO
2019-03-12Series E· $150M
Leadership Team
Matthew Prince
CEO & Co-Founder
Lee Holloway
Co-Founder & Lead Engineer
Recent News
Winnipeg Free Press
2026-01-09
San Francisco Chronicle
2026-01-09
2026-01-09
Company data provided by crunchbase