Mainframe Performance & Capacity Engineer Job at Realign (Atlanta)

Senior Technology Architect

We are seeking an expert Senior Technology Architect specializing in IBM Mainfra...

Location

Canada , Toronto

Salary:

Not provided

Randstad

Expiration Date

July 25, 2026

Requirements

Minimum of 7 years of dedicated, hands-on experience in Mainframe Performance and Capacity Management roles within massive enterprise environments
Firm structural understanding of IBM Mainframe CPU concepts, including Capacity BackUp (CBU) provisioning and Capacity on Demand (CoD) adjustments
Proven, advanced capability configuring and reporting via MICS, RMF, and associated ISV performance monitors
Deep familiarity parsing SMF records combined with practical SAS programming skills for processing massive performance datasets
Sound knowledge of database/transaction subsystem resource footprints, particularly IMS and DB2
Well-versed in ITIL-aligned Incident and Problem Management frameworks, with an ability to strictly adhere to enterprise Service Level Agreement (SLA) metrics

Job Responsibility

Capacity Planning & Assessment: Author, review, and maintain comprehensive capacity planning documents for the mainframe platform and IMS/DB2 subsystems. Perform complex 'what-if' impact modeling for CPU upgrades, hardware refreshes, and project workload variations
Metric Modeling & Calculations: Execute mathematical conversions and estimations to measure workload impacts in terms of $MIPS$ (Millions of Instructions Per Second) and $MSUs$ (Million Service Units) across complex, multi-partitioned LPAR environments
Tooling & Report Configuration: Configure, manage, and extract reporting insights from interactive capacity management utilities, specifically MICS (MVS Information Control System) and RMF (Resource Measurement Facility)
Data Logging Analysis: Parse, analyze, and manipulate System Management Facility (SMF) data utilizing SAS Programming frameworks to optimize subsystem throughput and manage zIIP engine utilization
Cost Optimization & Software Billing: Proactively identify CPU cost-saving opportunities, implement workload capping or balancing strategies, and reconcile mainframe software consumption billing for Independent Software Vendor (ISV) licenses
Disaster Recovery & Hardware Provisioning: Lead architectural installation, validation, and testing tracks for the new mainframe hardware platform at the DR co-location site. Participate in periodic live DR exercises to maintain total systems readiness
Incident Architecture & Root-Cause Analysis: Diagnose complex systemic failures, provide tier-3 operational support, and compile precise technical Method of Procedure (MOP) documentation along with root-cause system captures
Vendor & Lifecycle Management: Provide migration, modernization, and decommissioning architecture support for mainframe system utilities. Collaborate directly with tier-1 hardware/software vendors and cross-functional IT infrastructure leads

Head of High Availability Systems Engineering

This is a rare opportunity to lead a globally distributed engineering team at th...

Location

United States , Rutherford

Salary:

170000.00 - 300000.00 USD / Year

Citi

Expiration Date

Until further notice

Requirements

15+ years of overall experience in systems engineering or infrastructure roles
Minimum 8 years of hands-on z/TPF Administration experience in large-scale, production environments
Demonstrated experience managing global engineering teams in a senior leadership capacity
Proven expertise in High Availability systems design, disaster recovery, and business continuity planning
Deep, hands-on expertise in z/TPF Administration, including system programming, tuning, and troubleshooting at enterprise scale
Proficiency with Stratus VOS and I-Series IOS operating systems and associated toolsets
Strong working knowledge of mainframe hardware and software ecosystems, including Crypto, FICON, and platform utilities
Demonstrated experience with IBM Security Portal and enterprise vulnerability management frameworks
Expert-level understanding of disaster recovery architectures and storage replication technologies
Proven track record of leading and scaling global, senior-level engineering teams in high-stakes environments

Job Responsibility

Lead, mentor, and grow a high-performing global team of z/TPF, Stratus, and I-Series Systems Programmers
Foster a culture of engineering excellence, continuous learning, and accountability across geographically distributed teams
Set clear performance expectations and develop career pathways for senior technical contributors
Oversee the installation, configuration, maintenance, and upgrades of z/TPF, Stratus, and I-Series software environments
Drive end-to-end lifecycle management of complex, large-scale HA infrastructure — from hardware components to operating systems and related software
Administer and optimize the IBM Security Portal, ensuring robust vulnerability management practices are embedded across the estate
Proactively monitor system performance, identify bottlenecks, and architect solutions that maximize throughput and reliability
Lead capacity planning initiatives, translating business growth projections into actionable infrastructure roadmaps
Implement performance tuning strategies across z/TPF, VOS, and IOS environments
Champion comprehensive security policies and procedures that protect sensitive data and preserve system integrity

What we offer

medical, dental & vision coverage
401(k)
life, accident, and disability insurance
wellness programs
paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays
discretionary and formulaic incentive and retention awards

Fulltime

Apps Dev Tech Sr Lead Analyst Java SVP

Apps Dev Tech Sr Lead Analyst Java SVP at Citi. Own and drive end-to-end migrati...

Location

India , Chennai, Pune

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

Bachelor's or Master's degree in Computer Science, Information Technology, Engineering, or a related technical discipline
12–16 years of progressive software engineering experience, with at least 5 years in a senior technical leadership role (Tech Lead, Staff Engineer, principle)
Demonstrated experience leading or significantly contributing to at least one large-scale Mainframe modernisation or legacy platform migration programme
Prior experience in financial services, banking, or a similarly regulated industry strongly preferred
Java 17/21 (Expert), Python, COBOL / JCL (reading & assessment level)
Spring Boot, Spring Cloud, Spring Security, Spring Data JPA, Project Reactor / WebFlux
OpenShift, Kubernetes, Docker, Helm
Tekton, Harness, Jenkins, Git (Bitbucket / GitHub), Artifactory, SonarQube
Oracle, MongoDB, PostgreSQL, MS SQL Server, Redis, DB2/z
Apache Kafka, IBM MQ

Job Responsibility

Own and drive end-to-end migration of legacy Mainframe workloads (COBOL, JCL, CICS, IMS, DB2/z) to modern Java-based microservices deployed on enterprise container platforms (OpenShift / Kubernetes)
Conduct application assessments to identify migration candidates, define target-state architectures, and produce sequenced migration roadmaps with risk registers and rollback plans
Establish reusable migration patterns, tooling, and runbooks to accelerate successive migration waves
Leverage AI-assisted code translation tools (e.g., autonomous AI coding agents such as Devin) to automate COBOL-to-Java conversion at scale, with human-in-the-loop review gates
Validate functional parity post-migration through automated testing strategies (unit, integration, regression, performance)
Identify and quantify cost-reduction opportunities across MIPS consumption, software licensing, infrastructure footprint, and operational overhead
Build and maintain a technology cost model
track savings realisation against committed targets on a monthly cadence
Drive rationalisation of redundant systems, decommission end-of-life platforms, and consolidate tooling to reduce Total Cost of Ownership (TCO)
Partner with Finance and Vendor Management to renegotiate contracts and optimise spend through right-sizing, reserved capacity, and FinOps practices

Fulltime

Z/VM Technical Consultant

The z/VM Technical Consultant will provide expert-level support, engineering, an...

Location

United Kingdom , Bromsgrove

Salary:

Not provided

Vertali Ltd

Expiration Date

Until further notice

Requirements

Strong hands-on experience with IBM z/VM administration, engineering, or consultancy
Deep understanding of z/VM CP, CMS, DIRMAINT, RACF, and virtual networking concepts (VSWITCH, VLANs)
Proven ability to troubleshoot complex virtualisation, networking, and performance issues
Familiarity with enterprise storage (FCP, EDEV, DASD) and SAN connectivity
Strong scripting or automation capability (REXX, shell scripting, Python desirable)
Excellent communication skills and ability to work with technical and non-technical stakeholders

Job Responsibility

Design, deploy, and maintain IBM z/VM environments across multi-LPAR infrastructures
Provide deep technical expertise in z/VM virtualisation, CP, CMS, RACF integration, and performance tuning
Support provisioning, configuration, and lifecycle management of virtual servers and workloads
Troubleshoot complex issues across z/VM, TCP/IP stacks, network routing, and storage connectivity
Implement automation, monitoring, and operational improvements to enhance system reliability
Collaborate with Linux, z/OS, storage, and network teams to ensure seamless cross-platform integration
Produce technical documentation, architectural diagrams, and operational runbooks
Participate in capacity planning, performance analysis, and platform modernisation initiatives
Provide consultancy to stakeholders on best practices, platform optimisation, and future-state architecture
Support security hardening, patching, and compliance activities

What we offer

Comprehensive, locally competitive benefits package

Fulltime

Application Engineering Manager

We are seeking an experienced Engineering Manager to provide people leadership, ...

Location

United States , Appleton

Salary:

140000.00 - 180000.00 USD / Year

Beacon Hill

Expiration Date

Until further notice

Requirements

Bachelor's degree in Computer Science or a related technical field, or equivalent experience
Significant experience as an engineering people leader with demonstrated success managing and developing engineers
Background originating from hands‑on engineering roles (not purely oversight or adjacent functions)
Experience leading or influencing large enterprise application portfolios
Proven ability to engage in deep technical and architectural discussions
Experience working within corporate or enterprise technology environments
Familiarity with Agile and product‑oriented operating models
Strong communication skills with the ability to articulate the technical "why" to both technical and non‑technical stakeholders

Job Responsibility

Lead and develop multiple cross‑functional product teams, including engineers, scrum masters, and a staff engineer
Build, coach, and retain high‑performing engineering teams with a strong culture of accountability, collaboration, and continuous improvement
Provide regular 1:1 coaching, performance feedback, and career development planning
Foster psychological safety and a growth‑oriented team environment
Actively participate in architectural discussions and technical tradeoff decisions, including deep, hands‑on conversations
Guide teams toward sound system‑level and portfolio‑level architecture decisions rather than isolated optimizations
Review and influence solution design, integration approaches, and modernization strategies
Maintain credibility through hands‑on technical engagement, code review familiarity, and solution design participation
Provide leadership across a diverse application ecosystem, including: Packaged vendor platforms, Custom and in‑house applications, Legacy and mainframe systems
Lead or contribute to large‑scale, multi‑year modernization efforts involving deeply interdependent systems and aging data platforms

Fulltime

Systems Administrator

System Administrator works under the direction of a Principal Network Systems Ad...

Location

United States , Downey

Salary:

Not provided

Nexlogica

Expiration Date

Until further notice

Requirements

Minimum of five (5) years of broad knowledge of networking services and common networking protocols
Minimum of three (3) years of experience within the last four (4) in the capacity of a Network Systems Administrator or similar role
Minimum of two (2) years of experience within the last four (4) years in a security monitoring role
Possession of a bachelor’s degree in an IT-related or Engineering field
Additional qualifying experience may be substituted for the required education on a year-for-year basis
Technology skill sets required: Cisco ATA, Cisco ACI, Cisco APIC, Cisco Prime, Cisco VoIP Call Manager, CACTI, eCloud, Elastic Search, ITM, Open NMS, nGenius, McAfee
MVISION, NetScout, SCOM
UTR
StruxureWare, SecureWorks WAF (WAN App FW) toolset, Wireshark, & Web CTRL

Job Responsibility

Make sure that company networks align with business goals and objectives
Oversee an organization’s computer systems or database networks to ensure proper maintenance and security
Work with other network professionals and IT staff to update cyber security measures, install hardware or software devices and troubleshoot problems
Work with company employees to identify network or computer system needs, overseeing the installation of new hardware or software and using employee feedback to isolate issues
Maintain computer networks and systems including software, mainframes, VPNs, routers and other physical hardware
Install and configure network equipment to update or fix hardware or software issues
Update virus protection software to keep data and communications protected
Monitor computer systems to improve network performance for computer systems and networks
Communicate networking issues to other employees and management, especially in training new users
Fix software and hardware configuration issues for users on-demand or from inspection of the systems

Fulltime

Senior Mainframe Storage Architect

This job is responsible for defining an architectural vision and solution that s...

Location

United States , Richmond, Plano

Salary:

Not provided

The Muse

Expiration Date

Until further notice

Requirements

10 + Years experience leading and managing multiple competing and dynamic deliverables
10 + Years experience and skills to include: Storage Architecture
Encryption
Fiber protocols and configuration
FICON
HCD/IOCP
I/O Performance (DASD, Switches, Virtual Tape)
Refreshes/upgrades (inclusive of Brocade directors/switches, Hitachi DASD, and IBM Virtual Tape (TS7700s))
Storage Area Network (SAN) replication design and configuration
Capacity (inclusive of network/switches)

Job Responsibility

Works across the business, operations and technology to create the solution intent and architectural vision for complex solutions and prioritize functional and non-functional requirements into a technology backlog to enable the technology roadmap and functionality to support evolving capabilities and services
Contributes to the creation of the architecture roadmap of defined domains (Business, Application, Data, and Technology) in support of the product roadmap and the development of best practices including standardized templates
Clarifies the architecture, assists with system design to support implementation, and provides solution options to resolve any architectural impediments
Facilitates solution driven discussions, leads the design of complex architectures, and finds creative solutions through knowledge of domain, practical experiments, and proof of concepts while ensuring architecture is flexible, modular, and adaptable
Educates team members on the technology practices, standardization strategies, and best practices to create innovative solutions
Supports the team as needed to select the technology stack required for solutions and helps select preferred technology products
Performs design and code reviews to ensure all non-functional requirements are sufficiently met (for example, security, performance, maintainability, scalability, usability, and reliability)
Mainframe Storage Architect (Individual Contributor) Duties to include collaborating with others, designing, developing, and setting strategy for mainframe storage architecture in a large, diverse, dynamic, and exciting storage environment. Responsibilities will span mainframe storage disk, engineering, and virtual tape.

What we offer

FSA
HSA
Health Insurance
Dental Insurance
Vision Insurance
Life Insurance
Short-Term Disability
Long-Term Disability
Pet Insurance
Mental Health Benefits

Fulltime

New

IT Training Lead

The IT Training Lead will drive technology learning and user adoption across the...

Location

United States , Delray Beach

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

Experience in IT training, instructional design, technical enablement, or learning and development
Strong knowledge of Microsoft 365
Excellent communication, facilitation, and content development skills
Ability to translate technical concepts into practical, user-friendly training.

Job Responsibility

Design, develop, and deliver IT training programs in instructor-led, virtual, and self-paced formats
Take lead in the Microsoft Copilot and AI training strategy, including onboarding, advanced use cases, responsible AI usage, and ongoing enablement
Partner with IT leadership to support new technology rollouts, system upgrades, and digital transformation initiatives
Create and maintain training content, including videos, guides, tutorials, and job aids
Identify skill gaps and develop targeted learning solutions to improve adoption and productivity
Gather feedback and measure training effectiveness to continuously improve programs.

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Mainframe Performance & Capacity Engineer

Job Description

Job Responsibility

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