Security Platform Software Engineer, Cloudflare
Internal Public Key Infrastructure
$187-240k
Salary dependent on location. Plus equity
Web performance and security platform
Job no longer available
Web performance and security platform
1001+ employees
Job no longer available
$187-240k
Salary dependent on location. Plus equity
1001+ employees
Company mission
To help build a better Internet that is bold and ambitious.
Role
Who you are
- Familiarity with PKI standards and their surrounding ecosystem (X.509, TLS, etc.)
- Experience running an internal or public PKI with deep understanding of their requirements and pitfalls
- Worked with codebases and developed in Go or Rust
Desirable
- Familiarity with SPIFFE/SPIRE or other service identity framework/standards
- Experience executing CA rotations for a reasonably large environment
- Worked with HSMs, TPMs, or other platform TEEs (AMD SEV, Intel SGX, Apple Secure Enclave)
What the job involves
- As a Security Platform Engineer at Cloudflare you will help us provide a secure infrastructure for one of the biggest online platforms in the world, handling extensive amounts of traffic at very low latency
- You will be instrumental at defining the vision to help secure Cloudflare going forward
- The Security Platform team is responsible for secrets and internal certificate management at Cloudflare, and has the mandate of building powerful and robust infrastructure and tools that enable other engineering teams to deliver secure products to our customers without sacrificing development velocity
- Build and manage the PKI that provides trusted certificates to all of our internal services with fine-grained authentication and authorization controls
- Create and support robust client-side automation tooling to enable the use of short-lived certificates while maintaining reliability
- Promote the use of strongly-authenticated mTLS for all service-to-service communications and work with other engineering teams to develop solutions for their use cases
- Communicate and execute on periodic CA rotations and migration to best practices
- Contribute to the strengthening of CA and leaf certificate key protection schemes to elevate our security profile
Our take
Cloudflare is a multi-service global network that provides web security and infrastructure, DDoS mitigation services, and a content delivery network. Founded in 2009, Cloudflare has risen to become an industry giant, with over 25 million global internet properties on its network.
Cloudflare has been responsible for a number of admirable initiatives, offering free web protection to human rights groups, journalists, artists, and US election websites. This goes some way to counteracting the flak Cloudflare has received in some circles for the controversial groups and users who use its services. This chequered history, however, has not affected its over 80% market share in the content delivery network field.
This is perhaps in part because it has proven sharp at staying abreast of the rapidly morphing tech and digital space and customer demands. For example, Cloudflare is shifting to 100% renewable energy usage to create a zero-emissions internet, and in 2020 released a feature that would help users navigate data privacy regulations by selecting where their data is stored.
And impressive third-quarter 2025 results show strong momentum, with revenue rising to $562 million from $430 million a year earlier. The company also raised its full-year guidance, underscoring confidence in continued growth. As demand for secure, cloud-based infrastructure keeps growing, Cloudflare's expanding platform and improving efficiency leave it well positioned to capture further gains in a rapidly growing market.
Steph
Company Specialist at Welcome to the Jungle
Insights
16% employee growth in 12 months
Company
Company benefits
- Take-what-you-need vacation: We encourage employees to find a comfortable work-life balance by taking as many days off as they need while still being able to perform their jobs satisfactorily. (We really mean it!)
- Paid maternity & paternity leave: Our global parental leave policy allows up to sixteen paid weeks of bonding leave time for all qualifying new parents.
- Employee benefits: We offer a comprehensive benefits package including healthcare, life insurance, short- and long-term disability, pension plans in accordance with the market practice in our locations.
- Commuter program: We are flexible about where we work and value connecting at the office. Our commuter benefits program is in place to support team members' commute to work via public transportation without the extra cost burden.
- Wellbeing: Global offerings that provide mental health, childcare and family forming support to our employees across our offices.
Company HQ
China Basin, San Francisco, CA
Leadership
Lee Holloway
(Co-Founder & Lead Engineer)Lee began their career as an Engineer at Homewarehouse for a year before working at Unspam Technologies for 4 years. They co-created Project Honey Pot in 2004 and Cloudflare in March 2009, serving as Lead Engineer of both to present.
Michelle Zatlyn
(Co-Founder, President & Co-Chair)Having worked for Investor Economics and I Love Rewards for a combined 4 years, Michelle worked at Toshiba for 3 years as a Product Manager. She then co-founded Cloudflare in 2009 as COO, and has served as President since 2020. She is also a Board Member at Atlassian.
Matthew Prince
(Co-Founder & CEO)Matthew studied for an MBA at Harvard Business School before co-founding Unspam Technologies in December 2001, and Cloudflare in 2009, where he has served as CEO ever since.
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