Cyber Security Operations Specialist in London

Information security is an integral part of Visa’s corporate culture. It is essential to maintaining our position as an industry leader in electronic payments, which is why Visa has made it a priority to create top‑tier security operations and incident response teams to defend the company against evolving cyber threats. If you would like to join a company where security is truly valued, where you can work with like‑minded peers who are passionate about the art & science of cyber defense, and where you can use state‑of‑the‑art tools for maximum impact, then we have a home for you.

The successful candidate will work with a team of incident responders at one of Visa's Cyber Fusion Centers. The team is part of a larger organization located across multiple geographical sites that is responsible for the comprehensive cyber defense of Visa and its subsidiaries. This is a hybrid position. The expectation of days in the office will be confirmed by your Hiring Manager.

Essential Functions

• Monitor Information Security alerts using Security Information and Event Management (SIEM) to triage, mitigate, and escalate issues as needed while capturing essential details and artifacts.
• Utilize sensor telemetry data and correlated logs to establish context of an alert and rule out false positives.
• Perform analysis of security alerts to evaluate true positive malicious risk to the business, determine containment action, and identify required preventative measures.
• Ensure proper documentation of security incidents including attack details within the incident management system.
• Collaborate with operational support teams to ensure they are actively engaged in addressing potential security threats that can impact business.
• Respond to incoming reports of security incidents from the organization via calls and emails.
• Quarterly reports for PCI v4.
• Lead Sensitive Data investigations and ensure remediations within a timeframe.
• Tabletop Exercise development, leading and ownership.
• Ensure all processes and controls that fall within your area of responsibility are operating effectively and are correctly evidenced as working.
• Contribute to development of information security policy, standards and guidelines.
• Development of dashboards within SIEM/SOAR.
• Generate reports for both technical and non‑technical staff and stakeholders.
• Keep up to date with the latest security and technology developments.
• Research/evaluate emerging security threats and ways to mitigate them.

Qualifications

• Experience of Security Operations Center (SOC) work experience with a Bachelor’s degree.
• Experience in Cybersecurity or computer network defense role.
• Experience in operating and utilising Security Information and Event Management tool such as Google SecOps (formally Chronicle & Siemplify), ADX, Splunk, Sumo Logic.
• Experience with query languages such as YARA‑L, MDX, SPL.
• Familiarity with MITRE ATT&CK, Cyber Kill Chain, and Incident Response frameworks.
• Relevant security‑related certifications a plus: CISSP, GCIH, GCIA, GCED, GCFA, CySA+.
• Proven subject matter ability in relevant areas, such as incident response, intrusion analysis, malware analysis, web application security or security engineering.
• Strong knowledge of malware families and network attack vectors.
• Solid understanding of TCP/IP and internetworking technology including packet analysis, routing and network security defenses.
• Strong knowledge of operating systems (Windows & Linux), network services and applications.
• Demonstrated experience in an enterprise‑level incident response team or security operations center.
• Direct experience in handling cyber security incidents and associated incident response tools.
• Familiarity with python scripting.
• Strong working knowledge of common security tools such as SIEM, AV, WAF, IDS, NetFlow, Packet Analyzer and Endpoint Detection & Response tools.
• Knowledge of web applications security vulnerabilities including cross‑site scripting, cross‑site request forgery, SQL injection, DoS attacks and API attacks.
• Good understanding of Web Application Security risks.
• Excellent understanding of DDoS techniques and mitigation mechanisms.
• Display great problem‑solving skills, with tenacity and resilience to resolve issues.
• Excellent communication and presentation skills with proven skill in presenting analytical data effectively to varied audiences.
• Familiarity and demonstrated experience with AI and the automation around Security Operations.
• Strong interpersonal and leadership skills to influence and build credibility as a peer.
• Strong understanding of cloud technologies (AWS) and related security best practices.
• Knowledge of OWASP (Open Web Application Security Project) Top Ten Risk Factors.
• Understanding or experience working in an ISO27001/2, PC‑DSS or SOC 2 environment.
• Technical proficiency in at least one programming language, and the ability to successfully complete a coding assessment as part of the selection process.