Senior Mainframe Engineer

Company: Capital One
Location: Mc Lean
Posted on: April 1, 2026

Job Description:

Senior Mainframe Engineer Do you want to work for a tech company that writes its own code, develops its own software, and builds its own products? We experiment and innovate leveraging the latest technologies, engineer breakthrough customer experiences, and bring simplicity and humanity to banking. We make a difference for 65 million customers. At Capital One, you’ll be part of a big group of makers, breakers, doers and disruptors, who love to solve real problems and meet real customer needs. We want you to be curious and ask “what if?” Capital One started as an information strategy company that specialized in credit cards, and we have become one of the most impactful and disruptive players in the industry. We have grown to see ourselves as a technology company in consumer finance, with great opportunities for engineers who want to build innovative applications to give users smarter ways to save, transact, borrow and invest their money, as we seek to disrupt the industry again. As a Capital One Mainframe Engineer, you’ll work on a Mainframe identity platform to support Identity Access Management needs. Responsibilities: Identify opportunities for automation, evaluate new tools, and drive implementation of technology that creates value for the organization. Build strong relationships with customers, stakeholders, and team members Provide regular updates to the management team on project progress Support the rollout and onboarding of new applications Responsible for overall delivery of software components which meet functional specifications & product requirements Automate component & integration tests Collaborating with tech leads to ensure integrated end-to-end design and delivery Good knowledge of secure coding practices Be fearless and try out new open source technologies/frameworks to solve business problems Be fungible in a full stack team and own all aspects of delivering business applications Assist in monitoring, troubleshooting, and providing problem resolutions to related incidents Operational support with change and incident management processes Basic Qualifications: High school diploma, GED or equivalent certification At least 3 years of experience of CICS Transaction Security including sub-system security setup At least 3 years of experience of IBM z/OS including knowledge of RACF, TSO, ISPF. SDSF, and JCL At least 3 years of experience investigating and resolving user/system security issues. Preferred Qualifications: Bachelor’s Degree 4 years of experience troubleshooting end user issues in Access Certifications 3 years of experience with Cyber Security Domain specifically IAM Lifecycle Management 2 years of experience FIS Systematics GN Transaction Security including a sound knowledge of EOR’s, SOR’s, and TAR’s 2 years of experience Sailpoint IdentityIQ 1 year of experience in SQL 1 year of experience with Role Based Access Controls (RBAC) 1 years of experience with Amazon Web Services (AWS) CISSP Certification AWS Certification At this time, Capital One will not sponsor a new applicant for employment authorization, or offer any immigration related support for this position (i.e. H1B, F-1 OPT, F-1 STEM OPT, F-1 CPT, J-1, TN, E-2, E-3, L-1 and O-1, or any EADs or other forms of work authorization that require immigration support from an employer). The minimum and maximum full-time annual salaries for this role are listed below, by location. Please note that this salary information is solely for candidates hired to perform work within one of these locations, and refers to the amount Capital One is willing to pay at the time of this posting. Salaries for part-time roles will be prorated based upon the agreed upon number of hours to be regularly worked. McLean, VA: $161,800 - $184,600 for Prin Assoc, Cyber Technical Richmond, VA: $147,100 - $167,900 for Prin Assoc, Cyber Technical Candidates hired to work in other locations will be subject to the pay range associated with that location, and the actual annualized salary amount offered to any candidate at the time of hire will be reflected solely in the candidate’s offer letter. This role is also eligible to earn performance based incentive compensation, which may include cash bonus(es) and/or long term incentives (LTI). Incentives could be discretionary or non discretionary depending on the plan. Capital One offers a comprehensive, competitive, and inclusive set of health, financial and other benefits that support your total well-being. Learn more at the Capital One Careers website . Eligibility varies based on full or part-time status, exempt or non-exempt status, and management level. This role is expected to accept applications for a minimum of 5 business days. No agencies please. Capital One is an equal opportunity employer (EOE, including disability/vet) committed to non-discrimination in compliance with applicable federal, state, and local laws. Capital One promotes a drug-free workplace. Capital One will consider for employment qualified applicants with a criminal history in a manner consistent with the requirements of applicable laws regarding criminal background inquiries, including, to the extent applicable, Article 23-A of the New York Correction Law; San Francisco, California Police Code Article 49, Sections 4901-4920; New York City’s Fair Chance Act; Philadelphia’s Fair Criminal Records Screening Act; and other applicable federal, state, and local laws and regulations regarding criminal background inquiries. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation, please contact Capital One Recruiting at 1-800-304-9102 or via email at RecruitingAccommodation@capitalone.com . All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodations. For technical support or questions about Capital One's recruiting process, please send an email to Careers@capitalone.com Capital One does not provide, endorse nor guarantee and is not liable for third-party products, services, educational tools or other information available through this site. Capital One Financial is made up of several different entities. Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC).

Keywords: Capital One, Arlington , Senior Mainframe Engineer, IT / Software / Systems , Mc Lean, Virginia