Freelance Mainframe Storage Engineer Jobs (NOW HIRING)

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Job Summary
The Mainframe Storage Engineer is responsible for the engineering, administration, optimization, and strategic direction of enterprise storage platforms supporting IBM Z (z/OS) and distributed environments. Serving as a senior technical subject matter expert within Enterprise Storage, this role ensures the availability, resiliency, security, recoverability, and performance of storage services supporting critical business functions. The engineer leads complex technical initiatives, drives storage modernization efforts, supports regulatory and cyber resiliency requirements, collaborates across infrastructure, operations, application, and security teams, and mentors junior engineers while promoting operational excellence and continuous improvement.
Key Responsibilities
The engineer is responsible for designing, implementing, administering, and optimizing enterprise storage solutions including IBM DS8000, IBM FlashSystem, IBM Storage Scale (GPFS), IBM Storage Virtualize, and Pure Storage platforms across multiple data centers. Responsibilities include storage provisioning, performance analysis, capacity planning, lifecycle management, hardware refreshes, and modernization initiatives while ensuring service levels for availability, resiliency, and recoverability are met. The role also provides technical leadership for SAN infrastructure supporting FICON and Fibre Channel environments, including Cisco MDS and Brocade fabrics, zoning administration, connectivity management, and performance optimization.
The engineer designs and supports disaster recovery and business continuity solutions utilizing Metro Mirror, Global Mirror, HyperSwap, FlashCopy, PPRC, and related replication technologies. This includes leading recovery exercises, validation testing, continuity planning, and ensuring recovery objectives align with business and regulatory requirements. The role further supports enterprise data protection and cyber resiliency programs through technologies such as Dell PowerProtect Data Domain, Dell DLm, IBM TS7700, IBM Virtual Tape Library, SecureAgent VTL, Cobalt Iron Compass, Rubrik, Copy Services Manager, and Safeguarded Copy, with responsibility for immutable recovery strategies, ransomware recovery readiness, and recovery testing.
As a senior technical contributor, you would lead incident response, root cause analysis, and complex infrastructure changes while partnering with security and risk teams on encryption, key management, privileged access controls, audit readiness, and regulatory compliance initiatives. The role is also responsible for maintaining architecture standards, operational procedures, technical documentation, and runbooks while providing technical leadership and mentorship across the Enterprise Storage organization.
Required Qualifications
Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field, or equivalent professional experience, with a minimum of five years of enterprise storage engineering experience and at least three years supporting IBM Z and z/OS storage environments. Candidates should possess strong experience supporting business-critical production environments and a solid understanding of enterprise storage architecture, SAN infrastructure, disaster recovery, data protection, and operational support within regulated environments. Experience working within incident, change, problem, risk, and compliance management frameworks, combined with strong analytical, troubleshooting, communication, and technical leadership skills, is required.
Technical Skills & Experience
The successful candidate will possess advanced knowledge of IBM DS8000, z/OS storage environments, DFSMS, DFHSM (HSM), SMS administration, catalog management, storage groups, IDCAMS, ICKDSF, TSO, JCL, FICON architecture, and CKD/ECKD storage administration, including performance analysis, allocation strategies, and recovery procedures. Experience with Dell DLm, IBM TS7700, IBM Virtual Tape Library, SecureAgent VTL, disaster recovery validation, archival strategies, and recovery testing methodologies is required.
Additional expertise should include IBM FlashSystem, IBM Storage Scale, IBM Storage Virtualize, IBM Storage Insights, Pure Storage FlashArray, Metro Mirror, Global Mirror, HyperSwap, FlashCopy, and PPRC technologies. Strong familiarity with Cisco MDS SAN infrastructure, Brocade Fibre Channel fabrics, SAN zoning, Fibre Channel networking, FICON connectivity, and storage performance troubleshooting is required. Experience with Dell PowerProtect Data Domain, Cobalt Iron Compass, Rubrik, Copy Services Manager, Safeguarded Copy, Splunk, ServiceNow, enterprise monitoring platforms, and automation technologies such as Python, PowerShell, Shell scripting, and Ansible is highly desirable.
Preferred Qualifications
Experience within financial services or other highly regulated industries is preferred, along with experience supporting large-scale IBM Z environments, enterprise disaster recovery programs, and storage modernization initiatives. Knowledge of NYDFS cybersecurity requirements, NIST, cyber resiliency frameworks, SIEM integration, privileged access management, and regulatory governance standards is desirable. Industry certifications from IBM, Cisco, Dell, Pure Storage, or related technology providers are considered advantageous.
Salary Range
NJ: $130,000 - $165,000 base salary + annual target bonus
BBH and its affiliates' compensation program includes base salary, discretionary bonuses, and profit-sharing. The anticipated base salary range(s) shown above are only for the indicated location(s) and may differ in other locations due to cost of living and labor considerations. Base salaries may vary based on factors such as skill, experience and qualification for the role. BBH's total rewards package recognizes your contributions with more than just a paycheck-providing you with benefits that enhance your experience at BBH from long-term savings, healthcare, and income protection to professional development opportunities and time off, our programs support your overall well-being.
We value diverse experiences. We value diverse experiences and transferrable skillsets. If your career hasn't followed a traditional path, includes alternative experiences, or doesn't meet every qualification or skill listed in the job description, please do go ahead and apply.
About BBH:
Brown Brothers Harriman (BBH) is a premier global financial services firm, known for premium service, specialist expertise, technology solutions and partnership approach to client management. Across Investor Services and Capital Partners, we work with an enviable roster of sophisticated clients who make BBH their first call when they are tackling their hardest challenges. Delivering for our clients and each other energizes us.
We believe that how we do our work is just as important as what we do. We are relentless problem solvers who know our best ideas come from collective debate and development-so we are never possessive about our ideas. Every day we come together as a diverse community of smart and caring people to deliver exceptional service and expert advice-creating success that lasts. No matter where you sit in the organization, everyone is empowered to contribute their ideas. BBHers can pick up the phone and call any colleague, and they are happy to help. Expanding your impact beyond your daily role is part of how we operate as trusted partners to one another.
We believe stability is a competitive advantage, but being stable means having the knowledge, skill, and discipline to evolve, often-pushing the boundaries of innovation. As a private partnership, every investment we make is in the relationships, technologies, products and development we believe are in the long-term interests of our clients and our people. Our long-tenured leaders are experts in their areas and are actively involved in the day-to day business, taking the time to provide guidance and mentoring to build the next generation of BBHers. Because we know, our success begins with yours.
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