Business Information Security Officer (BISO)

Join Mizuho as a Business Information Security Officer (BISO)!

Position Summary

The Business Information Security Officer (BISO) for Mizuho Americas is the strategic bridge between the central cybersecurity team and the business. They ensure that security initiatives align with business objectives, embedding security-first practices directly into daily operations without compromising agility or innovation. As a senior leader, the BISO collaborates with business units to integrate security into operations, supervises the execution of the cybersecurity strategy, and serves as the liaison within the financial services industry. This role is essential for maintaining Mizuho's reputation for security and compliance while fostering resilience and innovation.

What you'll do

• Serve as the primary point of contact and trusted advisor on information security matters for senior business and technology leaders within the various line of business.
• Execute against a comprehensive information security strategy aligned with firm standards, business objectives, regulatory requirements, and industry best practices.
• Conduct risk assessments and provide recommendations to mitigate security risks and vulnerabilities within the organization.
• Collaborate with cross-functional teams to ensure that security controls are implemented and maintained throughout the organization.
• Engage with business stakeholders to understand their security needs and requirements and provide guidance on security-related decisions.
• Participate in the evaluation and selection of security technologies and solutions to meet organizational needs.
• Conduct security awareness and training programs to educate employees on information security best practices and policies.
• Oversee remediation activities and ensure timely and effective resolution to information security risks across the business and technology functions that support the business.
• Monitor and analyze security metrics and reports to identify trends, potential threats, and areas for improvement.
• Stay up to date with emerging security threats, industry trends, and regulatory changes relevant to the financial services sector.

What's required

• Proven experience as a Business Information Security Officer (or similar) within the financial services industry, ideally with exposure to Equities and systematic trading environments.
• Deep understanding of information security principles, frameworks, and best practices, including relevant financial industry regulations (e.g., SEC, FINRA, etc.).
• Strong analytical skills to assess complex security risks, translate technical details into business impact, and develop pragmatic mitigation plans.
• Exceptional communication and stakeholder management skills, with proven ability to engage and influence senior business and technology leaders.
• Experience leading security initiatives, managing projects, and driving cross-functional collaboration to achieve secure outcomes.
• Familiarity with key security technologies and controls, including network security, application security, IAM, data protection, and incident response.
• Strong problem-solving and decision-making abilities, balancing security needs with business objectives to enable secure innovation.
• Relevant certifications (CISSP, CISM, etc.)
• Bachelor's degree in Computer Science, Information Security, or a related field.
• Commitment to the highest ethical standards

The expected base salary ranges from $300k-$350k. 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

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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