Senior Application Support Engineer - Distributed & Mainframe

Job-ID: 213961Category: Information TechnologyLocation: Dallas, TX, United States; Tampa, FL, United StatesSchedule: Full timePosted: 2026-10-16Closes: 2026-10-17Salary Range: Senior Associate-75,000-150,000-USDFeatured Opportunities: NoFLSA Status: ExemptAre 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 incentiveComprehensive health and life insurance and well-being benefits, based on locationPension / Retirement benefitsPaid 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 RoleAs an Senior Associate Application Support Engineer, you will play a key role in supporting mission-critical applications across mainframe and distributed platforms that are essential to everyday business operations.You will work in a hands-on production support environment focused on system stability, incident resolution, and continuous improvement. This role offers strong exposure to enterprise systems and provides an opportunity to build expertise in application support, root cause analysis, and platform reliability.Your Primary Responsibilities:Analyze application issues and incidents to identify root causes and prevent recurrenceProvide day-to-day production support for applications across mainframe and distributed environmentsMonitor application dashboards and alerts to proactively identify and mitigate potential issuesCollaborate with team members to resolve application alerts and escalate when necessaryMaintain and enhance runbooks, knowledge base, and standard operating proceduresSupport batch processing, job scheduling, and automation, ensuring processes meet expected thresholdsExecute Disaster Recovery (DR) procedures during planned or unplanned outages and capture required documentationProvide input into application design by identifying gaps and improving supportability and reliabilityPerform routine operational activities such as service account maintenance (e.g., password rotations)Resolve production defects and support minor enhancements as neededSupport audit requests by gathering required documentation and evidenceFollow risk and control processes as part of daily responsibilities and escalate issues appropriatelyQualificationsBachelor’s degree preferred or equivalent practical experience6-8 years of experience in application support, production support, or similar roleTalent Needed for SuccessHands-on experience in application or production support environmentsExperience supporting mainframe applications (required)Working knowledge of Unix/Linux and Windows environmentsWorking knowledge of Unix/Linux, Windows, Mainframe, and SQL/PLSQLFamiliarity with SQL and relational databasesExposure to monitoring and observability toolsStrong problem-solving, troubleshooting, and root cause analysis skillsExperience with incident, problem, and change management processes (ITIL preferred)Familiarity with job scheduling and batch processing systemsBasic understanding of application architecture and development conceptsStrong communication skills and ability to collaborate across teamsAbility to work in a fast-paced production support environment with a strong sense of ownership and urgencyThe 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.About the organizationServes 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.About the company 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, X, YouTube, Facebook and Instagram. 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.