Mainframe Application Sr. Consultant

Engineering and Product | Software Engineering Solutions

Lake Mary, Florida, United States

Position Summary

Mainframe Application Sr. Consultant

Deloitte Consulting's technology professionals help clients identify and solve their most critical information and technological challenges. We provide advisory through end-to-end implementation services as well as outsourcing services and are recognized in the marketplace for capabilities across the spectrum.

Recruiting for this role ends on 10/1/2026

Our experienced technology professionals offer deep technical experience in their area of focus and are committed to delivering efficient, technology-based solutions to our clients. Our professionals are also aligned to industry sectors. By combining our technical capabilities with our industry experience, we create unmatched market offerings to solve our clients' business issues. Additionally, we have long-term partnerships with many of the world's leading technological companies, allowing us to understand solution alternatives and recommend and support the most appropriate solution for our clients. By leveraging these elements, we can help our clients convert leading edge ideas into tangible results. The Mainframe Application Sr. Consultant will provide AMS support (L2/L3 support) including minor and major enhancements for the client's applications for SAP, Basis systems, Salesforce, Legacy applications.

Work you’ll do

The Mainframe Application Sr. Consultant will support IBM z/VSE production applications, batch jobs, online transactions, and interfaces. Monitor workloads and troubleshoot ABENDs, batch failures, application errors, and data issues. Perform root cause analysis, job restarts, recovery activities, and production validation. Develop and implement application enhancements and production fixes.

Modify COBOL/VSE programs, z/VSE JCL, CICS transactions, SQL, and file-processing logic. Support VSAM files, DB2 for VSE & VM data, CICS/VSE transactions, and batch processing. Prepare and execute unit, functional, integration, regression, SIT, and UAT testing. Develop test cases, coordinate test data and environments, track defects, and perform retesting. Support production implementations, change management, and post-implementation monitoring. Maintain technical documentation, support procedures, and knowledge-transfer materials. Coordinate with business users, project managers, infrastructure teams, vendors, and offshore resources. Provide technical guidance and participate in 24x7 or on-call production support. The successful candidate would possess these skills:

• Ability to work independently and collaborate as part of a team
• Effective written and verbal communication skills
• Meticulous attention to detail and quality of work product
• Ability to build and sustain professional relationships
• Ability to lead projects or workstreams
• Ability to manage and prioritize multiple tasks in a fast-paced and dynamic environment
• Strong interpersonal skills and professional demeanor
• Ability to meet deadlines
• Ability to provide clear guidance to others

The Team

Engineering as a Service provides complete design, implementation, and technology operations, leveraging our core engineering expertise. We transform engineering teams, modernize technology, and deliver complex programs with a product engineering approach. Our flexible delivery models—traditional teams, pools, or pods—are tailored to each client’s needs, offering engineering-led advisory, implementation, and operational capabilities to accelerate innovation.

Required Qualifications

• 8+ years of hands-on experience with IBM z/VSE, z/VSE JCL, VSE/POWER, COBOL/VSE, CICS/VSE, VSAM, DB2 for VSE & VM, SQL, embedded SQL, IDCAMS, and batch processing.
• Strong knowledge of ABEND resolution, job-log and SYSLOG analysis, CICS troubleshooting, dumps, root cause analysis, application debugging, job restart and recovery procedures, production incident management, testing, defect management, and release implementation.
• Exposure to CA 7, Control-M, Endeavor, ChangeMan, InterTest, Xpediter, File-AID, ICCF, VSE/Interactive Interface, MVS, OS/390, TSO, ISPF, IDMS, IMS, Oracle, and Microsoft SQL Server.
• Strong analytical, problem-solving, communication, stakeholder-management, offshore coordination, documentation, and knowledge-transfer skills.
• Bachelor's degree, preferably in Computer Science, Information Technology, Computer Engineering, or related IT discipline; or equivalent experience
• Limited immigration sponsorship may be available.
• Ability to travel 10%, on average, based on the work you do and the clients and industries/sectors you serve

Preferred

• Strong analytical, problem-solving, communication, stakeholder-management, offshore coordination, documentation, and knowledge-transfer skills
• Analytical ability to manage multiple projects and prioritize tasks into manageable work product
• Can operate independently or with minimum supervision
• Excellent Written and Communication Skills
• Ability to deliver technical demonstrations

The wage range for this role takes into account the wide range of factors that are considered in making compensation decisions including but not limited to skill sets; experience and training; licensure and certifications; and other business and organizational needs. The disclosed range estimate has not been adjusted for the applicable geographic differential associated with the location at which the position may be filled. At Deloitte, it is not typical for an individual to be hired at or near the top of the range for their role and compensation decisions are dependent on the facts and circumstances of each case.

You may also be eligible to participate in a discretionary annual incentive program, subject to the rules governing the program, whereby an award, if any, depends on various factors, including, without limitation, individual and organizational performance.

Deloitte is committed to providing reasonable accommodation for people with disabilities. If you require a reasonable accommodation to participate in the recruiting process, please direct your inquiries to the Global Call Center (GCC) at USTalentCICInbox@deloitte.com.

Deloitte is committed to providing reasonable accommodations for people with disabilities. If you require a reasonable accommodation to participate in the recruiting process, please direct your inquiries to the Global Call Center (GCC) at USTalentCICInbox@deloitte.com.

Recruiting tips

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Benefits

At Deloitte, we know that great people make a great organization. We value our people and offer employees a broad range of benefits. Learn more about what working at Deloitte can mean for you.

Our people and culture

Our inclusive culture empowers our people to be who they are, contribute their unique perspectives, and make a difference individually and collectively. It enables us to leverage different ways of thinking, ideas, and perspectives, and bring more creativity and innovation to help solve our clients' most complex challenges. This makes Deloitte one of the most rewarding places to work.

Our purpose

Deloitte’s purpose is to make an impact that matters for our people, clients, and communities. At Deloitte, purpose is synonymous with how we work every day. It defines who we are. Our purpose comes through in our work with clients that enables impact and value in their organizations, as well as through our own investments, commitments, and actions across areas that help drive positive outcomes for our communities. Learn more.

Professional development

From entry-level employees to senior leaders, we believe there’s always room to learn. We offer opportunities to build new skills, take on leadership opportunities and connect and grow through mentorship. From on-the-job learning experiences to formal development programs, our professionals have a variety of opportunities to continue to grow throughout their career.

As used in this posting, "Deloitte" means Deloitte Consulting LLP, a subsidiary of Deloitte LLP. Please see https://www.deloitte.com/us/about for a detailed description of the legal structure of Deloitte LLP and its subsidiaries.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or protected veteran status, or any other legally protected basis, in accordance with applicable law.

Requisition code: 366235

Job ID

366235