Join Mizuho as a Systems Administrator!

We are seeking a Senior Windows Systems Administrator with 6+ years of experience to design, secure, and lead enterprise Windows and Azure environments within a financial services organization. This role requires deep technical expertise, strong security and compliance knowledge, advanced automation, and strategic use of AI-driven tools to improve reliability, detection, and response.

Key Responsibilities

• Architect, implement, and maintain enterprise Windows Server and hybrid cloud environments.
• Design and Manage Active Directory, Azure AD, and hybrid identity solutions.
• Lead Microsoft 365 administration, security, and governance
• Manage VMWare infrastructure including VMs, networking, storage, and backup solutions.
• Perform patching, vulnerability management, and system hardening initiatives.
• Familiar and able to implement Zero Trust (cyber security framework) principles, conditional access, and endpoint detection and response (EDR)
• Drive automation using PowerShell, Python, and infrastructure-as-code principles.
• Evaluate and integrate AI-powered tools for monitoring, incident response, log correlation, and capacity planning.
• Lead disaster recovery planning, business continuity testing, and system resilience initiatives.
• Function as a technical escalation point and mentor junior administrators
• Partner with security, risk, audit, and compliance teams
• Produce engineering documentation and runbooks and audit-ready evidence documents.
• Participate in On-Call rotation. 
• Work in a collaboration work environment
• Working knowledge of Citrix XenApp and NetScaler Infrastructure 

Required Skills & Qualifications

• 6+ years of Windows Systems Administration experience
• Expert knowledge of Windows Server, Active Directory, Group Policy, and identity management
• Advanced experience with Microsoft 365 and Azure
• Strong PowerShell and Python automation and scripting skills
• Experience with SCCM as a patch and software management tool
• Experience operating in highly regulated financial environments.
• Strong understanding of security controls, monitoring, and compliance requirements
• Experience with Microsoft Clustering
• Experience with AI-assisted security, monitoring, or AIOps platforms
• Strong written and communication skills

Preferred / Nice to Have

• Familiarity with SIEM platforms and AI-driven threat detection
• Experience in a financial, banking, or regulated environment 

The expected base salary ranges from $112k-$140k. 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

Mizuho has in place a hybrid working program, with varying opportunities for remote work depending on the nature of the role, needs of your department, as well as local laws and regulatory obligations. Roles in some of our departments have greater in-office requirements that will be communicated to you as part of 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 EEO/AA Employer - M/F/Disability/Veteran.

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.

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