Response Engineer - PhishGuard

Location: Bengaluru

About the Department

Cloudforce One is Cloudflares threat operations and research team responsible for identifying and disrupting cyber threats ranging from sophisticated cyber criminal activity to nation-state sponsored advanced persistent threats (APTs). Cloudforce One works in close partnership with external organizations and internal Cloudflare teams continuously developing operational tradecraft and expanding ever-growing sources of threat intelligence to enable expedited threat hunting and remediation.

Members of Cloudforce One are at the helm of leveraging an incredibly vast and varied set of data points that only one of the worlds largest global networks can provide. The team analyzes these unique data points at massive scale and efficiency synthesizing findings into actionable threat intelligence to better protect our customers.

About INTERDICT

I.N.T.E.R.D.I.C.T. (Identify Neutralize Triage Engage Respond Disrupt Integrate Contain Threat Hunting) is Cloudforce Ones unified operational security organization responsible for identifying analyzing and responding to threats targeting Cloudflare and its customers. INTERDICT encompasses three main sub-functions:

• PhishGuard: Managed email threat detection and response service
• Cloudflare Managed Defense (CMD): Network and application security monitoring for Under Attack mitigation support.
• Detection Engineering: ML model development and detection optimization

Together INTERDICT provides comprehensive 247365 protection across email application and network threat surfaces.

Role Summary

As a Response Engineer for PhishGuard you will serve as the essential human intelligence layer responsible for identifying tracking and defeating sophisticated email-borne cyber threats like Business Email Compromise (BEC) and vendor fraud. You will operate within the INTERDICT organization collaborating closely with internal teams like Detection Engineering PREDICT (Threat Intelligence) and SIRT to hunt down adversaries and refine global security models. Our ideal candidate possesses deep forensic thoroughness exceptional nuance detection and a growth-minded curiosity to protect global organizations using one of the worlds largest networks.

Role Responsibilities

• Conduct continuous real-time monitoring of email threat queues to review and analyze sophisticated attacks flagged by Cloudflare Email Security automated systems.
• Investigate customer-reported submissions execute proactive threat hunts targeting emerging patterns and perform manual retraction or quarantine of verified malicious emails.
• Provide critical feedback to Detection Engineering to update machine learning models and contribute novel campaign data to global intelligence repositories.
• Identify nuanced threat patterns by correlating technical telemetry with behavioral indicators generating detailed threat dossiers for impending organizational risks.
• Deliver direct crisis intervention and proactive phone notifications to customers regarding high-dollar BEC threats and active insider risks.
• Lead technical onboarding sessions for new customers configuring internal system instances with bespoke detection rules thresholds and custom allow/block lists.
• Guide customers through their multi-year DMARC implementation journey toward strict Reject policy enforcement by conducting SPF and DKIM alignment audits.

Role Requirements (Must-Have Skills)

• Undergraduate degree in Computer Science Information Security Information Systems or equivalent practical experience.
• 5 years of experience tracking and analyzing complex cyber campaigns utilizing technical indicators such as Domains IP Addresses and email headers.
• Proven expertise analyzing investigating and defending against highly targeted phishing invoice fraud and Business Email Compromise (BEC) attacks.
• Deep working knowledge of core email authentication protocols (SPF DKIM DMARC) and aggregate/forensic data interpretation.
• Hands-on experience utilizing AI LLM tools (such as OpenCode or Windsurf) to develop automations for daily analysis and productivity workflows.
• Excellent verbal and written English communication skills with a strong ability to translate complex technical threats into actionable business intelligence for executive stakeholders.

Nice-to-Have Skills

• Relevant industry certifications such as GCIH GCIA CEH Security or equivalent.
• Technical familiarity with regular expressions YARA rules SQL query formulation and malicious file format analysis (e.g. Microsoft Office Documents Adobe PDFs).
• Prior experience working within managed security services (MSSP) or customer-facing security consulting environments.
• Familiarity with the broader Cloudflare ecosystem including Cloudflare Email Security WAF and Zero Trust architectures.

What Makes Cloudflare Special

Were not just a highly ambitious large-scale technology company. Were a highly ambitious large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.

Project Galileo: Since 2014 weve equipped more than 2400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work technology already used by Cloudflares enterprise customers--at no cost.

Athenian Project: In 2017 we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free so that their constituents have access to election information and voter registration. Since the project weve provided services to more than 425 local government election websites in 33 states.

1.1.1.1: We released 1.1.1.1 to help fix the foundation of the Internet by building a faster more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Heres the deal - we dont store client IP addresses never ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers.

Sound like something youd like to be a part of Wed love to hear from you!

Please note that applicants who progress to the offer stage of the interview process may be asked to attend an in-person interview within one of the Cloudflare Offices or Cloudflare Hubs. More details about this will be available at that stage of the interview process.

This position may require access to information protected under U.S. export control laws including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license.

Cloudflare is proud to be an equal opportunity employer. We are committed to providing equal employment opportunity for all people and place great value in both diversity and inclusiveness. All qualified applicants will be considered for employment without regard to their or any other persons perceived or actual race color religion sex gender gender identity gender expression sexual orientation national origin ancestry citizenship age physical or mental disability medical condition family care status or any other basis protected by law. We are an AA/Veterans/Disabled Employer.

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