Senior Analyst, Security Operations Center (SOC)

About Us

MarketAxess is on a journey to digitally transform one of the world’s largest financial markets, enabling the shift from analog, phone‑based trading to a fully electronic marketplace. Our platform makes trading fixed‑income more accessible, ultimately improving transparency, efficiency, and competition in the marketplace. With over 2,000 clients worldwide, we are committed to building a transparent, robust trading platform and helping the industry thrive.

The Role

The Senior Analyst is responsible for monitoring, detecting, and responding to security incidents and threats to safeguard the firm’s IT infrastructure. This role involves analyzing security alerts, creating and maintaining playbooks, and implementing measures to mitigate risks. The ideal candidate will possess strong analytical skills, knowledge of cybersecurity tools, the ability to work collaboratively, and basic scripting (Python, PowerShell) proficiency.

How You’ll Help Take Us There

• Monitor and analyze security infrastructure to ensure the integrity, confidentiality, and availability of sensitive data and systems.
• Assist in conducting in‑depth security investigations, analyzing logs, network traffic, and other data sources to identify root causes, assess impact, and gather evidence for response and mitigation actions.
• Develop and maintain threat detection and response playbooks, incorporating industry best practices and regulatory requirements.
• Conduct proactive cyber threat hunting activities to identify advanced, persistent, or previously undetected threats across the environment.
• Assist in maintenance of the threat intelligence lifecycle, including collection, analysis, dissemination, and continuous improvement.
• Collaborate with cross‑functional teams to develop and implement coordinated security strategies, policies, and procedures.
• Be part of a 24/7/365 SOC, with a rotating on‑call schedule for overnights and weekends.

What We’re Looking For

• 3+ years of incident response experience, handling malware, phishing, and network intrusion incidents.
• Exceptional analytical and problem‑solving skills, with the ability to quickly assess alerts and distinguish false positives from true threats.
• Strong written and verbal communication skills, able to report incidents and explain technical details to non‑technical stakeholders.
• Adaptability and ability to work effectively in a fast‑paced environment where threats evolve constantly.
• Current knowledge of AI‑security technologies and adversarial AI to anticipate and mitigate evolving threat landscapes.

What You Can Expect From Us

• Central location: office near St Paul’s.
• Free food: daily lunch, breakfast cereals, office snacks, and drinks from vending machines.
• Paid time off: 25 days annual leave plus 2 charity days.
• Reward for service: two‑week bonus holiday after each 5 years of service.
• Core benefits: competitive package including private medical insurance, cash plan, health screenings, dental cover, life assurance, critical illness cover, income protection, pension, car leasing, wellness stipend, interest‑free season ticket loan, and a share incentive plan.
• Tuition assistance and professional training: on‑demand learning, boot camps, and conference attendance.

Collaboration and innovation are integral to our success – it’s how we got to where we are and how we’ll maintain and grow our competitive advantage. Employees in Technology work in the office two or more days a week, with flexibility where appropriate.