Jobs / United States / Cloudflare INC
Senior Certificate Authority Architect
Cloudflare INC · 🇺🇸 Hybrid
Sponsorship verdict
Sponsorship possible
One solid signal, not two — worth applying, and worth asking about sponsorship early.
- Employer is on a government sponsor recordThe US Department of Labor certified 120 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 30 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
- The posting doesn’t mention sponsorshipSilence isn’t a refusal — ask the recruiter before investing much time.
- No salary bar for this routeH-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area. Cap-subject employers enter a lottery weighted by wage level. Source: https://www.federalregister.gov/documents/2025/12/29/2025-23853/weighted-selection-process-for-registrants-and-petitioners-seeking-to-file-cap-subject-h-1b, rules effective 2026-02-27.
- What Cloudflare INC paid sponsored hires in similar roles1 certified filing for “Solution Architect - Anaplan” (Computer Systems Analysts) in NJ: $180k–$180k, median $180k. Most were filed at wage level IV (100%) — 4 lottery entries, ≈61% projected selection odds for cap-subject employers. Source: US Department of Labor LCA disclosure data (Oct 2025 – Jun 2026).
- Confirmed live todayWhen a source last listed this job as open.
US H-1B: cap-subject employers enter a lottery weighted by wage level — Level I gets 1 entry, Level IV gets 4 (DHS projected selection odds ≈15% at Level I to ≈61% at Level IV). Universities and non-profit research employers are cap-exempt. The $100,000 fee for new petitions from abroad is currently blocked by a court order (appeal pending).
A verdict summarises public evidence; it is not legal advice and never a guarantee — the employer and the immigration authority decide. Sign in to factor in where you can already work.
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Sponsor Radar — Cloudflare INC
The US Department of Labor certified 120 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 30 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
Past sponsorship or register membership never guarantees sponsorship for this vacancy or for you. Full Sponsor Radar for Cloudflare INC →
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. 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. Cloudflare is building a new public Certificate Authority for the Internet. We are looking for a senior technical architect to help define the systems, protocols, and security architecture behind it. This role spans applied cryptography, Web PKI, distributed systems, security engineering, compliance, and Internet standards. It will help Cloudflare build a CA that operates safely at Internet scale while establishing a credible path from today's X.509 ecosystem toward post-quantum authentication using Merkle Tree Certificates (MTCs). Mission Define and guide the end-to-end architecture of Cloudflare's public Certificate Authority: a high-assurance, highly available system capable of issuing conventional publicly trusted certificates at Cloudflare scale while supporting Merkle Tree Certificates (MTCs) and the evolution toward a post-quantum Web PKI. You will help determine not only how the CA is implemented, but also its trust boundaries, key hierarchy, issuance architecture, auditability, failure modes, incident response mechanisms, and long-term cryptographic evolution. Key Responsibilities • Define and maintain the end-to-end technical architecture of Cloudflare's public CA across certificate issuance, key management, transparency, revocation, renewal, and relying-party integration. • Design root and intermediate CA trust hierarchies, signing systems, HSM integration, key ceremonies, key rotation, backup, recovery, migration, and key-compromise response. • Architect secure, resilient, and highly available issuance services capable of operating at Internet scale and across multiple geographic and failure domains. • Design certificate lifecycle systems around ACME, domain and IP validation, CAA, Certificate Transparency, pre-issuance linting, revocation, renewal, and large-scale certificate replacement. • Integrate Cloudflare’s MTC infrastructure, including CA logs, landmarks,, cosigning or mirroring, and interactions with relying parties. • Develop practical architectures for coexistence and migration between classical X.509 certificates and post-quantum authentication mechanisms. • Define trust boundaries, security properties, and threat models covering key compromise, unauthorized issuance, software su