Process
The first round involved a discussion with the hiring manager, followed by a phone interview without a coding exercise. This initial round focused on past experience and background.
The second round queried basic knowledge of network and CS concepts.
Questions
Difference between TCP and UDP
Network model
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Interview Statistics
The following metrics were computed from 46 interview experiences for the Cloudflare Software Engineer role in United States.
Success Rate
9%
Pass Rate
Cloudflare's interview process for their Software Engineer roles in the United States is extremely selective, failing the vast majority of engineers.
Experience Rating
Positive30%
Neutral15%
Negative54%
Candidates reported having negative feelings for Cloudflare's Software Engineer interview process in United States.
Cloudflare Work Experiences
5.0
Excellent workplace environment.
Software Engineer • Former Employee
March 15, 2021
Pros: HR and internal management are well treated.
Cons: Remote offices and high living costs
4.0
Good
Software Engineer • Current Employee
March 9, 2026
Pros: * WLB (dependent on the team)
* Coworkers who are very knowledgeable
* Very nice coworkers
Cons: Compensation could be better.
2.0
Hopefully, someone has a good experience
Software Engineer • Current Employee
London, England, United Kingdom
October 27, 2025
Pros: - Good salary, reasonable benefits.
- There are some good people and teams here. Like most tech companies, it depends where you get hired into.
Cons: - Company runs on duct tape and hope, and blog post puffery.
- Terrible onboarding process (failed completely, apparently that is expected).
- Mentors not trained in any way: mine had one response to any question, "you'll figure it out."
- Manager rarely attended 1:1s, zero guidance except what not to do.
- Consistently cheap, happier to burn engineering time rather than pay for anything new. Comically bad at this.
- Company lobbies employees very hard to vote for Cloudflare in the top-100 companies; doesn't actually care to solicit feedback on how it really is.
- There are hopefully better teams, but mine was the least bonded I've ever encountered.
- 5.0Excellent workplace environment.Software Engineer • Former EmployeeMarch 15, 2021Pros: HR and internal management are well treated.Cons: Remote offices and high living costs
- 4.0GoodSoftware Engineer • Current EmployeeMarch 9, 2026Pros: * WLB (dependent on the team) * Coworkers who are very knowledgeable * Very nice coworkersCons: Compensation could be better.
- 2.0Hopefully, someone has a good experienceSoftware Engineer • Current EmployeeLondon, England, United KingdomOctober 27, 2025Pros: - Good salary, reasonable benefits. - There are some good people and teams here. Like most tech companies, it depends where you get hired into.Cons: - Company runs on duct tape and hope, and blog post puffery. - Terrible onboarding process (failed completely, apparently that is expected). - Mentors not trained in any way: mine had one response to any question, "you'll figure it out." - Manager rarely attended 1:1s, zero guidance except what not to do. - Consistently cheap, happier to burn engineering time rather than pay for anything new. Comically bad at this. - Company lobbies employees very hard to vote for Cloudflare in the top-100 companies; doesn't actually care to solicit feedback on how it really is. - There are hopefully better teams, but mine was the least bonded I've ever encountered.
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