Cyber Threat Hunter

Experian, a global leader in providing information solutions to organizations and consumers, is seeking a highly motivated Senior Cyber Threat Hunter to join our Cyber Fusion Center (CFC) team as a fully remote position located in Costa Rica.

RESPONSIBILITIES

As a member of Experian's Global Security Office (EGSO) this individual will research and investigate hosts and networks to identify adversary tools, techniques, and procedures (TTPs), investigate potential exploitation of systems, and provided reactive investigate support during security incidents to identify adversary behavior elsewhere in the environment. They will also be expected to participate in several different areas within Security Operations and Incident Response process; these activities may include malware reversing, digital forensics, use case development, security control testing, and hunt plan development. The candidate for this role must have strong personal skills involving report writing, presentation, organization, and communication.

This is a technical position supporting the strategies of the Global Security Operations Center and Experian's Chief Information Security Officer. You will report directly to the Senior Manager, Cyber Threat Hunting as part of the CFC's Incident Response program.

KEY RESPONSIBILITIES INCLUDE

• Implement proactive threat hunting activities based on intelligence, telemetry, and hypotheses to identify malicious activity across host, network, and cloud environments.
• Develop and refine hunt queries, detections, and rules (Yara, Sigma) to support continuous improvement of detection engineering use cases.
• Monitor the evolving threat landscape, vulnerabilities, and adversary TTPs, applying this knowledge to enhance hunting strategies.
• Document hunting methodologies, queries, findings, and recommended actions in SOPs and playbooks aligned to MITRE ATT&CK.
• Participate in purple team exercises and adversary simulations to validate detection coverage and improve hunting techniques.
• Use SIEM, EDR, NDR, and UEBA tools to conduct hunts and confirm threats through forensic artifact analysis.
• Collaborate with incident response and forensic teams to share findings, support remediation, and strengthen detection capabilities.
• Contribute to automation efforts by developing scripts and workflows that reduce repetitive tasks and accelerate hunting operations.
• Help maintain a hunt lab environment for testing hypotheses, validating detections, and experimenting with new tools and techniques.

Experian is a global data and technology company, powering opportunities for people and businesses around the world. We help to redefine lending practices, uncover and prevent fraud, simplify healthcare, create marketing solutions, and gain deeper insights into the automotive market, all using our unique combination of data, analytics and software. We also assist millions of people to realize their financial goals and help them save time and money.

We operate across a range of markets, from financial services to healthcare, automotive, agribusiness, insurance, and many more industry segments.

We invest in people and new advanced technologies to unlock the power of data. As a FTSE 100 Index company listed on the London Stock Exchange (EXPN), we have a team of 22,500 people across 32 countries. Our corporate headquarters are in Dublin, Ireland. Learn more at experianplc.com.

• 3–5 years of experience in cybersecurity with focus in Threat Hunting, Incident Response, Forensics, or Detection Engineering
• Bachelor's degree in cybersecurity, computer science, information technology, or related field
• Certifications such as GIAC Certified Incident Handler (GCIH), GIAC Network Forensic Analyst (GNFA), GIAC Cloud Forensics Responder (GCFR), EC-Council Certified Ethical Hacker (CEH), or equivalent are highly beneficial
• Hands-on experience with SIEM, EDR, NDR, and forensic tools, with ability to write hunt queries and detections.
• 3+ years of experience with at least one scripting or programming language (Python, PowerShell, or JavaScript) to support automation and custom tooling

This is a permanent home-based role in Costa Rica. No Visa sponsorship or relocation available.**

Our benefits include: Medical, life and dental insurance, Asociación Solidarista, International Share Save Plan, Flex Work/Work from home, Paid time off, Annual Performance Bonus, Education Reimbursement, Family Bonding, Bereavement Leave, Referral Program, and more.

Experian is proud to be an Equal Opportunity and Affirmative Action employer. Our goal is to create a successful, inclusive and diverse team where people love their work and love working together. We believe that diversity, equity and inclusion is important to our purpose of creating a better tomorrow. We value the uniqueness and want you to bring your whole, authentic self to work. For us, this is The Power of YOU and it ensures that we live what we believe.

Experian Careers - Creating a better tomorrow together

Find out what its like to work for Experian by clicking here

#LI-REMOTE #LI-SA1