Join Mizuho as a Senior Windows Engineer!
Th ideal candidate has deep expertise in Microsoft 365, Exchange (Online and On‑Premises), Microsoft Teams and enterprise messaging platforms. In this role, you will be responsible for technical leadership, architecture-level decision making, and delivery of complex messaging and infrastructure initiatives in a large, regulated enterprise environment.
Responsibilities:
- Serve as a senior technical authority for Microsoft 365 and Exchange, including hybrid Exchange architectures.
- Design, implement, and maintain Exchange Online and Exchange On‑Premises environments, including mail flow, transport, migrations, and coexistence.
- Lead messaging and directory migration initiatives, including tooling such as Quest On Demand.
- Own and integrate email security platforms, including Proofpoint, ensuring reliability, security, and compliance.
- Drive end‑to‑end delivery of infrastructure and messaging projects, including upgrades, migrations, and modernization efforts.
- Partner with architecture, security, and operations teams to define technical standards and roadmaps.
- Author and maintain advanced PowerShell automation for administration, reporting, and operational efficiency.
- Act as escalation point for complex M365, Exchange, Active Directory, and Teams issues.
- Participate in vendor evaluations, solution design, and capacity planning.
- Operate within ITIL-based service management frameworks and support change, incident, and problem processes.
- Produce high‑quality technical documentation and provide clear stakeholder communication.
- Participate in on-call rotation with senior-level responsibility and ownership.
Requirements:
- At least 8+ years of experience supporting enterprise Windows and Microsoft messaging platforms (financial services experience preferred).
- Advanced hands-on experience with Microsoft 365 and Exchange (Online and On‑Premises) in hybrid environments.
- Strong experience designing and supporting Microsoft Teams including Voice / Calling solutions
- Proven leadership in delivering large-scale messaging or infrastructure projects.
- Experience with Quest On Demand for migrations or hybrid integrations.
- Expertise supporting Proofpoint or equivalent email security platforms.
- Advanced PowerShell scripting skills.
- Deep understanding of Active Directory, Windows Server, and identity integrations.
- Strong working knowledge of ITIL-based service management (ServiceNow preferred).
- Excellent technical judgment, communication, and stakeholder engagement skills.
Preferred:
- Experience with VMware Horizon, Azure Virtual Desktop (AVD)
The expected base salary ranges from $111k-$185k. 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.
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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.
#LI-MIZUHO
Skills Required
- At least 8+ years of experience supporting enterprise Windows and Microsoft messaging platforms
- Advanced hands-on experience with Microsoft 365 and Exchange in hybrid environments
- Strong experience designing and supporting Microsoft Teams including Voice / Calling solutions
- Proven leadership in delivering large-scale messaging or infrastructure projects
- Experience with Quest On Demand for migrations or hybrid integrations
- Expertise supporting Proofpoint or equivalent email security platforms
- Advanced PowerShell scripting skills
- Deep understanding of Active Directory, Windows Server, and identity integrations
- Strong working knowledge of ITIL-based service management
- Excellent technical judgment, communication, and stakeholder engagement skills
Mizuho Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Mizuho and has not been reviewed or approved by Mizuho.
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Healthcare Strength — Medical, dental, and vision coverage are characterized as strong, with plans described as excellent in multiple contexts. U.S. entities provide standard plan options and supporting programs that reinforce overall coverage quality.
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Retirement Support — A U.S. 401(k) program with employer contributions is available, indicating solid retirement support across entities. While formulas may vary by unit and year, the presence of an employer-funded component is a consistent feature.
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Parental & Family Support — Paid parental leave is described as meaningful, accompanied by programs that support childcare and eldercare. Flexible workstyles and family-focused resources broaden the depth of family support.
Mizuho Insights
What We Do
This is not your typical financial institution. It’s our people who make us a cut above. Here, every person is respected because of their differences, not in spite of them. We pride ourselves on a culture of purpose, passion and compassion. At Mizuho, we provide the stability of an international industry leader with the career trajectory of a growing business. Our steady, strategic growth gives our people at all levels rewarding degrees of responsibility and a richer work experience than a boutique firm or an established giant could offer alone. Working for Mizuho opens doors not just to a rewarding career with excellent prospects, but to lasting friendships with colleagues from diverse cultures. It’s the local expertise of our employees that makes our global network so powerful. By collaborating with colleagues and clients who have your same ambition, you can amplify your sphere of influence and base of knowledge as part of one of the largest—and growing—banks in the world. We’re all global citizens, and that’s why our company feels compelled to make an impact through more than just drawing up deals. We prove that it’s possible to do well and do good. We do right by our clients, our community and each other.
