Senior Security Engineer – Operations

Join Mizuho as a Senior Security Engineer – Operations!

The ideal candidate will be responsible for the day-to-day operational health, stability and support of the organization’s security tools including but not limited to: Endpoint Detection & Response, Security Orchestration, Network Security, Log Aggregation Platforms and related infrastructure platforms like Proxies, Domain Name System and Secure Access Service Edge technologies.

This role is focused on run-the-bank (RTB) support: serving as the primary line of technical support for the security platforms, performing the daily care and feeding required to keep them healthy, current and effective, and ensuring they continue to deliver value to our overall security program. The engineer will serve as the operational SME for the supported platforms and will partner closely with Security Engineering, Security Operations and Infrastructure teams, acting as the primary point of contact for incidents, service requests and changes affecting these tools.

The ideal candidate must demonstrate an ability to learn new platforms quickly, work within established IT service management processes and manage vendor support relationships.

Major Responsibilities:

· Provide daily (BAU) technical support for the security platforms, including triage, troubleshooting and resolution of incidents, service requests and user-reported issues within defined SLAs.

· Perform routine health checks and monitoring of platform availability, performance, capacity and log ingestion, proactively identifying and remediating issues before they impact the business.

· Execute operational care and feeding activities, including patching, version upgrades, agent deployment and coverage reconciliation, certificate renewals, license management and content/signature updates.

· Perform root cause analysis on platform incidents and recurring issues, and drive problem records through to permanent resolution.

· Implement configuration changes, policy updates and rule/exclusion requests through the change management process, including testing, peer review and rollback planning.

· Build and maintain operational documentation for the supported platforms, including runbooks, standard operating procedures, knowledge articles and support/escalation contacts.

· Serve as an escalation point for Security Operations on tool-related issues and support security monitoring use cases, including tuning, log source onboarding and data quality.

· Interface with vendors for support cases through to resolution, track product advisories and end-of-life notices, and participate in vendor service reviews.

· Support audit and regulatory requests, control evidence gathering and remediation of findings related to the supported platforms.

· Identify and automate repetitive operational tasks to improve efficiency and reduce manual effort.

· Partner with Security Engineering on projects to provide operational requirements and ensure new tools and changes are properly transitioned into BAU support.

· Report on platform health, operational metrics and risks to management.

Required Qualifications:

· Strong hands-on operational experience supporting the tools mentioned in the job description in an enterprise production environment.

· Experience performing upgrades, patching, agent deployments and routine maintenance of security tools.

· Experience working with VMware (or similar), Next Gen Firewall and SASE platforms.

· Experience with SIEM (Splunk preferred), including monitoring log ingestion health and troubleshooting data onboarding issues.

· Understanding of DNS and IP networking, with the ability to troubleshoot connectivity, proxy and name resolution issues.

· Strong troubleshooting/root cause analysis skills, with the ability to work effectively under pressure during production incidents.

· Experience working within ITSM processes (Incident, Problem and Change Management) using a ticketing platform such as ServiceNow.

· Self-driven – ability to manage a queue of tickets and tasks, prioritize effectively and complete independently.

· Strong communication skills to provide clear status updates during incidents and report on operational risks to the organization.

· Understanding of the Incident Response life cycle is required as this role will serve as an escalation point for Security Operations.

· Working knowledge of Linux (RHEL) and Windows OSes required.

· Ability to script/code to aid automation of operational tasks required – preferably Python + PowerShell.

· High attention to detail, particularly when executing changes in production environments.

· Educational background with BS/MS in Computer Science, Computer Engineering, Information Technology, Cyber Security, or similar.

· 5-7+ years of experience in a similar or related position.

Additional Qualifications:

· Experience working with the Financial Services Industry.

· Previous experience in system/network administration, desktop engineering or IT infrastructure operations a plus.

· Familiarity with ITIL practices; ITIL Foundation certification a plus.

· Experience with monitoring and observability tools for platform health and alerting a plus.

Hybrid position in NYC. Required to participate in the on-call rotation and support after-hours maintenance windows.

The expected base salary ranges from $112k-$160k. Salary offers are based on a wide range of factors including relevant skills, training, experience, education, and, where applicable, certifications and licenses obtained. Market and organizational factors are also considered. In addition to salary and a generous employee benefits package, successful candidates are eligible to receive a discretionary bonus.

Other requirements

In office attendance is an essential function of this role. There is currently a requirement to be in the office a minimum 50% of the time, or five out of every 10 business days. Specific information about the requirements for your role will be communicated during the recruitment process.

Company Overview

Mizuho Financial Group, Inc. is the 15th largest bank in the world as measured by total assets of ~$2 trillion. Mizuho's 60,000 employees worldwide offer comprehensive financial services to clients in 35 countries and 800 offices throughout the Americas, EMEA and Asia. Mizuho Americas is a leading provider of corporate and investment banking services to clients in the US, Canada, and Latin America. Through its acquisition of Greenhill​, Mizuho provides M&A, restructuring and private capital advisory capabilities across Americas, Europe and Asia. Mizuho Americas employs approximately 3,500 professionals, and its capabilities span corporate and investment banking, capital markets, equity and fixed income sales & trading, derivatives, FX, custody and research. Visit www.mizuhoamericas.com.​​

Mizuho Americas offers a competitive total rewards package.

We are an equal employment opportunity employer, and we comply with applicable laws prohibiting discrimination in all of the jurisdictions where we operate. AA Employer - M/F/Disability/Veteran.

Accommodations are available upon request for applicants with disabilities and other covered reasons in accordance with applicable law.

We participate in the E-Verify program.

We maintain a drug-free workplace and reserve the right to require pre- and post-hire drug testing, as permitted by applicable law.

About Us

Why Mizuho

Mizuho is in growth mode as we are climbing the league tables, disrupting the status quo, and attracting top talent. Positions are available across our corporate functions, and on our corporate and investment banking, capital markets, advisory, research, sales & trading, derivatives, and financing teams.

We are looking for candidates who want to contribute to our entrepreneurial culture where people at all levels are inspired to share ideas. Our creativity sets us apart, and our perseverance drives results in creating bespoke, client-focused solutions.

If you are interested in advancing your career working for a firm with a growth mindset and the resources of a global financial services team, we would like to hear from you.

For more information, please view our Recruiting Brochure