Sr. Adversarial AI Security Engineer

Who are we?

At Finastra, we’re a global leader in financial services software, dedicated to expanding access to financial services and shaping what’s next for the industry. Our technology powers mission‑critical solutions across Lending, Payments and Universal Banking, supporting over 7,000 customers, including 80% of the world’s top 50 banks, in more than 110 countries.

What will you contribute?

This role will design and deliver realistic adversarial cyberattacks, including the AI enabled/Orchestrated attacks, that will test the effectiveness of the security stack as well as the company's ability to detect and respond to these types of attacks.

Key Responsibilities

• Lead the planning, design and implementation of assessments and plans, with a focus on AI/ML systems. Continuously test LLM/RAG/agent systems for adversarial risks and automate in CI.
• Perform full scope adversarial simulation/red team assessments such as design and run adversarial suites (prompt injection, jailbreaks, retrieval poisoning), test model extraction, membership inference, and agent tool-use abuse, deliver PoCs and fixes.
• Work with the cyber defense Teams to develop new and improved ways to defend the organization
• Prepare reports containing attack paths, findings/vulnerability information, and mitigation options and recommendations
• Provide support during ongoing assessments by writing tools and setting up infrastructure
• Creating automation for specific tasks and operations
• Research, investigate and evaluate emerging technologies, industry trends and best practices, and vendor solutions to be able to recommend and assess various security products

Required Qualifications

• Proven experience with offensive security/research.
• Demonstrated adversarial AI; Python; replay/fuzzing automation; Security testing standard or Framework such as the MITRE ATLAST Framework
• Adversarial mindset and critical thinking skills

Preferred Qualifications

• Experience in regulated environments.
• OSCP/GXPN or equivalent a plus.
• Excellent written and verbal communication skills
• Experience working in complex, diverse and global (international) environments

We are proud to offer a range of incentives to our employees worldwide. These benefits are available to everyone, regardless of grade, and reflect the values we stand for:

Flexibility

Enjoy unlimited vacation, subject to local regulations and business priorities. Benefit from hybrid working arrangements and inclusive policies such as paid time off for voting, bereavement, and sick leave.

Well‑being

Access confidential one‑to‑one support through our Employee Assistance Program, connect with our network of Wellbeing Champions and Gather Groups, and take part in monthly events and initiatives designed to help you thrive—inside and outside of work.

Health & Financial Security

Medical, life and disability insurance, retirement plans, lifestyle, and other benefits.*

Sustainability

Paid time off for volunteering and donation‑matching opportunities to support causes that matter to you.

Inclusion

Get involved in our inclusion communities, such as Count Me In, Culture@Finastra, Proud@Finastra, Disabilities@Finastra, and Women@Finastra—open to everyone who wants to participate and contribute.

Career Development

Access online learning and accredited courses through our Skills & Career Navigator tool.

Recognition

Take part in our global recognition program, Finastra Celebrates, and share your voice through regular employee surveys that help shape our culture and ways of working.

*Specific benefits may vary by location.

At Finastra, each individual is unique—bringing their own ideas, perspectives, cultural backgrounds, and experiences. We learn from one another, value what makes us different, and create an environment where everyone feels included, supported, and able to be their authentic selves.

Be unique. Be exceptional. Help us make a difference at Finastra.

Applicants for this position need to be located in posted location or their immediate surrounding areas. Due to the requirements of this position, this job posting is not available for, and Finastra will not be considering any applicants who currently reside in New York City or California.