Mainframe Solutions Architect

🕒 May 1

🇺🇸 United States – Remote

⏰ Full Time

🟠 Senior

🔴 Lead

💻 Solutions Engineer

👻 Ghost score 69%

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&Dine

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2021

🍽️ Food & Beverage

🤝 B2B

🏪 Marketplace

Food & Beverage • B2B • Marketplace

&Dine is a London-based workplace catering company founded in 2021 that connects companies with hundreds of independent food Makers to provide high-quality, bespoke office catering. It offers three main services: &Dine Premium (subscription cafeteria-style recurring catering with fixed pricing and account managers), &Dine Events (bespoke event catering with professional presentation), and Order &Dine (ad-hoc online ordering). The company emphasizes supporting independent vendors, sustainability in packaging and delivery, flexible menu planning, and reliable delivery across London with tiered delivery fees and minimum orders. Trusted by notable corporate clients, &Dine focuses on breakfasts, team lunches, meetings, and company events, ensuring health & safety compliance from vendors.

📋 Description

• Serve as the lead technical voice on mainframe architecture, application structure, data flows, and modernization feasibility • Engineer, administer, and troubleshoot IBM z/OS environments supporting DISA/DoD mission workloads • Support and tune DB2 for z/OS environments and CICS regions • Analyze dumps, logs, and system traces; drive root-cause analysis and implement permanent fixes • Provide technical support for COBOL, REXX, JCL, FORTRAN, and other mainframe workloads • Lead legacy system assessments, including inventory, dependency mapping, risk identification, and modernization roadmaps • Design modernization architectures involving code refactoring, rehosting, API enablement, hybrid cloud integration, and workload offloading • Plan and execute migrations and upgrades, including z/OS and subsystem upgrades and environment consolidation • Translate assessment findings into technical recommendations, trade-off analyses, and phased implementation plans for Government customers • Coordinate cutovers and validate post-migration stability • Collaborate with ICAM, security, and infrastructure teams on DoD security frameworks and controls • Implement and validate security controls including STIGs, hardening guidance, and RACF or equivalent administration • Mentor junior and mid-level engineers • Contribute to proposals, technical volumes, PWS development, and ROM estimates • Develop operational documentation including runbooks, SOPs, change plans, and rollback procedures • Perform other related duties as assigned

🎯 Requirements

• 8+ years of IBM mainframe experience supporting enterprise production environments • Active Secret clearance strongly preferred • Hands-on expertise in z/OS systems programming/administration • DB2 for z/OS operational support experience • CICS operational support experience • Proficiency in JCL, TSO/ISPF, SDSF, JES2, and SMP/E • Experience with performance and capacity analysis using SMF/RMF or equivalent tools • Experience contributing to or leading mainframe assessments and migrations/upgrades • Experience designing and executing mainframe modernization strategies, including application rehosting, code refactoring, cloud migration, or API enablement of legacy systems • Familiarity with hybrid cloud architectures and mainframe environments, including IBM z/OS Connect, cloud-native integration, and workload offloading • Direct experience supporting DISA, DoD, or other Federal defense agency mainframe programs preferred • Assembler experience preferred • Experience with ICAM systems, access control modernization, or RACF/RBAC environments on mainframe preferred • Familiarity with RMF, ATO processes, NIST 800-53, CMMC, and DISA STIG implementation preferred • Experience with AWS, Azure, or GCP and migrating or refactoring mainframe capabilities into cloud services preferred • REST/Web Services knowledge and familiarity with z/OS Connect preferred • Familiarity with modernization-related tooling such as Rocket Software, IBM Data Virtualization, SAS, VSAM/ISAM, Natural, and Adabas preferred • Familiarity with AIOps concepts preferred • Experience with Micro Focus, Broadcom, or IBM-native refactoring and migration tools preferred • Active TS/SCI clearance preferred

🏖️ Benefits

• Medical coverage • Dental coverage • Vision coverage • Life coverage • Disability coverage • Retirement savings with company match • Paid time off • Voluntary supplemental benefits • Employee assistance program • Educational assistance • Tuition reimbursement

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