Principal Software Engineer – Mainframe Modernization & Cloud Platforms

Are you ready to make an impact at DTCC?

Do you want to work on innovative projects, collaborate with a dynamic and supportive team, and receive investment in your professional development? At DTCC, we are at the forefront of innovation in the financial markets. We are committed to helping our employees grow and succeed. We believe that you have the skills and drive to make a real impact. We foster a thriving internal community and are committed to creating a workplace that looks like the world that we serve.

The Information Technology group delivers secure, reliable technology solutions that enable DTCC to be the trusted infrastructure of the global capital markets. The team delivers high-quality information through activities that include development of essential, building infrastructure capabilities to meet client needs and implementing data standards and governance.

• Competitive compensation, including base pay and annual incentive
• Comprehensive health and life insurance and well‑being benefits, based on location
• Pension / Retirement benefits
• Paid Time Off and Personal/Family Care, and other leaves of absence when needed to support your physical, financial, and emotional well‑being.
• DTCC offers a flexible/hybrid model of 3 days onsite and 2 days remote (onsite Tuesdays, Wednesdays and a third day unique to each team or employee).

The Fin Sight organization delivers critical technology platforms that support DTCC’s risk management, treasury, and clearing operations. Within Fin Sight, the Collateral Fund Management (CFM) platform is foundational to DTCC’s financial resilience, supporting internal treasury users and external clients in managing collateral funds used to absorb losses if a clearing participant defaults.

As a Principal Software Engineer / Assistant Director, you will provide technical, delivery, and operational leadership for the modernization of CFM batch and mainframe processing. You will lead the transformation of legacy COBOL and mainframe‑centric batch flows into modern, cloud‑based, distributed solutions, while preserving business rules, financial controls, resiliency, and regulatory integrity.

This role is accountable for driving and de‑risking end‑to‑end modernization delivery, strengthening architectural and design governance, and aligning CFM transformation initiatives with DTCC’s broader enterprise modernization strategy. You will also mentor and guide technical and delivery teams across multiple modernization initiatives to ensure stable, compliant, and business‑critical outcomes.

• Lead the end‑to‑end delivery of CFM batch and mainframe modernization initiatives
• Drive the transformation of legacy COBOL and mainframe‑centric batch processing to modern, distributed, cloud‑based solutions
• Provide architectural and design governance to ensure solutions align with DTCC standards and long‑term strategy
• Strengthen transparency and observability across batch processing ecosystems
• Coordinate cross‑functional execution across engineering, QA, infrastructure, architecture, and business teams
• Ensure financial controls, regulatory compliance, risk management, and resiliency are embedded into all solutions
• Mentor and guide technical and delivery teams, promoting high standards of engineering and execution
• De‑risk modernization delivery by identifying architectural, operational, and execution challenges early
• Support business‑critical application delivery while reducing the overall mainframe footprint

• Minimum 8+ years of related experience in enterprise software engineering, platform modernization, or large‑scale systems
• Bachelor’s degree preferred or equivalent professional experience

• Demonstrated experience delivering large‑scale, enterprise‑wide technology solutions in complex environments
• Hands‑on experience modernizing legacy or mainframe systems into cloud‑based or distributed architectures
• Proven ability to reduce dependency on legacy batch processing and simplify fragmented technology ecosystems
• Strong architectural mindset with experience strengthening design and governance…