C
Cloudflare

Research Engineer Intern (Fall 2026)

In-OfficeOnsitePart Time
StrategyEngineeringAI & DataResearchAI
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At a glance
LocationIn-Office
Work styleOnsite
ContractPart Time
CompensationNot disclosed
SeniorityNot specified
DeadlineNot stated
The opportunity

About the role

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.

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Your work

What you'll do

  • Cloudflare's Research Team solves difficult problems in security, privacy, and systems at scale. This involves engineering, data analysis, open source software development, protocol design, implementation of primitives, with lots of measurement alongside.
  • Successful candidates will be matched to suitable projects in on-going research directions. We are particularly interested in applications in the following areas:
  • Distributed Systems
  • Trusted Execution Environments
What matters

What they're looking for

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  • Evidence of tackling hard or open-ended problems
  • Proven track record of peer-reviewed research, open-source software contributions,
  • Knowledge or experience with at least one of the following:
  • Computer networking protocols (TCP/IP, DNS, BGP, QUIC, etc.) and related algorithms
  • Machine learning analysis, ideally in systems or network optimization
  • Authentication protocols, applied cryptography, PKI and SSL/TLS
  • Operating or distributed systems analysis or development
  • Measurement for network and computer systems
  • Proficiency in a scripting language, such as Python

Helpful, not always essential

  • Proven track record of independently driving projects in a fast-paced environment
  • Experience working in groups, or with multiple stakeholders
  • Able to fluently work across multiple programming languages
The organization

About Cloudflare

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3work modes observed
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