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. Pay and Benefits:

• 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 Impact You Will Have in This Role The FinSight organization delivers critical technology platforms that support DTCC’s risk management, treasury, and clearing operations. Within FinSight, 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. Your Primary Responsibilities: * 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 Qualifications * Minimum 8+ years of related experience in enterprise software engineering, platform modernization, or large‑scale systems * Bachelor’s degree preferred or equivalent professional experience Talent Needed for Success * 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 standards * Ability to improve transparency, monitoring, and observability across complex systems * Experience aligning modernization initiatives with broader enterprise technology strategy Technical & Delivery Strengths

• Strong working knowledge of Java and Spring Boot
• Experience designing and operating microservices‑based, distributed batch

architectures

• Hands‑on experience with AWS cloud platforms
• Familiarity with Agile delivery practices; exposure to AI‑driven development

approaches is a plus Leadership & Collaboration * Strong communication skills with the ability to engage both technical and non‑technical stakeholders * Proven ability to mentor, guide, and influence teams across multiple disciplines

• Comfortable operating with senior leadership and business stakeholders
• Demonstrated conflict‑resolution and decision‑making capabilities
• Ability to learn quickly, operate through ambiguity and change, and help

teams navigate transformation The salary range is indicative for roles at the same level within DTCC across all US locations. Actual salary is determined based on the role, location, individual experience, skills, and other considerations. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation. With over 50 years of experience, DTCC is the premier post-trade market infrastructure for the global financial services industry. From 20 locations around the world, DTCC, through its subsidiaries, automates, centralizes, and standardizes the processing of financial transactions, mitigating risk, increasing transparency, enhancing performance and driving efficiency for thousands of broker/dealers, custodian banks and asset managers. Industry owned and governed, the firm innovates purposefully, simplifying the complexities of clearing, settlement, asset servicing, transaction processing, trade reporting and data services across asset classes, bringing enhanced resilience and soundness to existing financial markets while advancing the digital asset ecosystem. In 2024, DTCC’s subsidiaries processed securities transactions valued at U.S. $3.7 quadrillion and its depository subsidiary provided custody and asset servicing for securities issues from over 150 countries and territories valued at U.S. $99 trillion. DTCC’s Global Trade Repository service, through locally registered, licensed, or approved trade repositories, processes more than 25 billion messages annually. To learn more, please visit us at [ or connect with us on LinkedIn

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DTCC proudly supports Flexible Work Arrangements favoring openness and gives people freedom to do their jobs well, by encouraging diverse opinions and emphasizing teamwork. When you join our team, you’ll have an opportunity to make meaningful contributions at a company that is recognized as a thought leader in both the financial services and technology industries. A DTCC career is more than a good way to earn a living. It’s the chance to make a difference at a company that’s truly one of a kind. Learn more about Clearance and Settlement by clicking here [ Serves as a dedicated technology resource for advancing DTCC’s business opportunities and providing industry thought leadership for leveraging new technology. The goal of this new department is to partner internally with IT, our business and regulatory divisions and externally with clients, regulators, and fintech vendors, to help build new platforms and business models to advance DTCC’s mission to support the financial markets.