Security Engineer, Institutional Trading @Blockchain

Overview

The role of Security Engineer, Institutional Trading at Blockchain involves ensuring the secure operation of off-chain trading processes and infrastructure. This position is embedded within the Institutional Trading and Financial Operations team and is responsible for mitigating risks associated with trading activities.

Key Responsibilities

• Partner with Trading, Middle Office, and Quant teams to assess trading systems, data flows, and third-party integrations.
• Conduct assessments to identify structural vulnerabilities and draft strategic Risk Treatment Plans.
• Serve as the primary security liaison for Senior Management and vendors, summarizing technical gaps into business risks.
• Implement monitoring for FinOps-specific security signals and integrate them into SIEM/SOAR.
• Support secrets and key-management hygiene, ensuring keys are stored securely and rotated.
• Assist product security in triage of findings and implement CI checks.
• Participate in incident exercises and post-incident reviews for trading incidents.
• Document controls and produce risk summaries for FinOps leads and Security.
• Research and integrate AI utilities and Large Language Model agents into secure infrastructure.

Requirements

• 5+ years in security engineering or a related field.
• Expertise in Threat Modeling and ability to perform structured reviews.
• Experience with observability and detection tooling.
• Practical knowledge of KMS/HSM, secrets management platforms, and IAM patterns.
• Ability to translate technical debt into business risk summaries for stakeholders.
• Proficiency in auditing Pull Requests in TypeScript, Java/Kotlin, or Python.
• Experience with technical due diligence on third-party integrations.

Benefits

• Full-time salary based on experience with meaningful equity.
• Work from anywhere for up to 20 days per year.
• ClassPass subscription.
• Unlimited vacation policy.
• Apple equipment provided.
• Flexible work culture.

Location

This role is based in the London office with a mandatory in-office presence four days per week. Remote work is available for a limited number of days.

How to Apply

Please apply directly through the company career page.