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1–2 jobs· newest first

Senior Response Engineer - Cloudflare Managed Defense Center (CMDC)New
Cloudflare · Singapore
Hybrid · Full-time · Senior
Member of Technical Staff (Web Access Engineer, Crawler)
Perplexity · London, United Kingdom
Hybrid

+10K new in the last hour

Senior Response Engineer - Cloudflare Managed Defense Center (CMDC)

Cloudflare · Posted Nov 13, 2026

Singapore
Hybrid
Full-time · Senior
6–8 years

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Lead technical response and incident command for sophisticated cyberattacks across Cloudflare’s enterprise customer base, designing mitigation strategies, mentoring engineers, and collaborating with product and engineering teams.

Responsibilities

Act as technical lead and incident commander during high-impact security events
Perform deep-dive forensic analysis of complex traffic anomalies
Apply advanced mitigation strategies using Cloudflare’s security suite
Lead technical communications and incident bridge calls with enterprise stakeholders
Monitor and investigate proactive security alerts

Requirements

Nice to have: SQL
Nice to have: GraphQL
Nice to have: ClickHouse
Nice to have: SIEM
Nice to have: Splunk

Skills

Security Operations Center Managed Detection and Response network engineering incident response TCP/IP UDP ICMP DNS BGP edge network design Layer 7 protocols HTTP/1.1 HTTP/2 HTTP/3 TLS reverse proxy API security packet capture tcpdump Wireshark tshark AI and machine learning command line Bash Linux Mac Windows incident bridge stakeholder management

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Member of Technical Staff (Web Access Engineer, Crawler)

Perplexity · Posted Nov 13, 2026

London, England, United Kingdom
Hybrid
5+ years

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Web Access Engineer for the Crawler team building reliable fetching and rendering systems for AI-powered search.

Responsibilities

Own fetching and rendering improvements end to end, from investigation through implementation and production rollout, partnering with crawler engineers and SREs.
Investigate fetch and rendering failures across DNS, TLS, HTTP, caching, redirects, and client-side rendering, and classify root causes.
Improve page loading, completion detection, and content capture to preserve relevant content and handle dynamic pages reliably.
Ensure the crawler respects site-imposed access restrictions and rate limits, identifies itself clearly, and retries only transient technical errors.
Build tools to reproduce failures, compare crawler output against expected page content, and turn findings into regression tests.

Requirements

Nice to have: CDN development
Nice to have: caching systems
Nice to have: web performance systems
Nice to have: operating crawlers
Nice to have: headless browsers

Skills

Go Python Rust C++

content delivery

HTTP error handling

server-defined rate limits

service workers

client-side rendering

JavaScript debugging

Chrome DevTools

packet captures

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