Information Security Engineer

Mariner is seeking a proactive and technically curious Information Security Engineer to join their Technology & Information Security team. The role involves engineering and operating modern security platforms, conducting security assessments, and embedding security into applications and infrastructure to enhance the organization's security posture.

Responsibilities:

• Engineer and operate modern security platforms
• Implement, run, and optimize enterprise-level security tooling across detection, identity, cloud, endpoint, and governance technologies
• Conduct deep-dive security assessments
• Evaluate systems, configurations, and architecture through hands-on testing and analysis—delivering actionable insights that directly influence engineering and business decisions
• Strengthen core security operations
• Support And Mature Processes Such As
• Malware response and remediation
• Vulnerability management and patch governance
• SIEM log analysis, correlation, and monitoring
• Incident documentation, reporting, and lifecycle management
• Improve systems by design—not by accident
• Embed security into applications, infrastructure, and business initiatives from the outset, partnering with IT and engineering teams to identify risks and drive effective mitigations
• Contribute through data, insights, and experimentation
• Analyze trends, surface patterns, and help refine the firm’s Information Security Program through continuous improvement and cross-functional engagement

Requirements:

• Bachelor's degree in Computer Science, Information Systems, Cybersecurity, or equivalent experience
• 3–5 years of hands-on experience in information security, IT operations, or adjacent engineering roles; experience in financial services is a plus
• Familiarity with modern security tools, frameworks, and standards (SIEM, EDR, vulnerability scanners, CIS, NIST, ISO 27001)
• Familiarity with identity and access management (IAM) solutions, such as Okta, including integration with applications and security systems
• Experience with automation, including scripting languages (e.g., Python, PowerShell, Bash) to streamline security processes, workflows, and response actions
• Ability to operate with autonomy, accountability, and comfort in fast-moving environments
• Exceptional communication and collaboration skills with the ability to influence across teams
• Analytical mindset with a high bar for detail, documentation, and operational excellence