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What is Mainframe?

Mainframe is a high-performance computer system used by large organizations to process large volumes of data and run critical business applications.

3,358 open Mainframe jobs on freehire.

Named alongside Mainframe

Jobs asking for Mainframe

ADENTIS Italia

3 days ago

Java Developer Middle

NewBe an early applicant EuropeMiddle
Italy

CHI SIAMO ADENTIS Italia è un gruppo europeo di consulenza ingegneristica e operativa facente parte del Gruppo MoOngy. Presente in 14 paesi europei con oltre 8.500 dipendenti, abbiamo aperto, da quattro anni, la prima…

AI API COBOL Gdpr Java +2 skills

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Ensono

22 views 3 days ago

Senior Linux Systems Engineer

Open 40d APACFull-timeSenior
India

Hands-on Linux L3 engineer on Ensono's Linux Operations team, resolving high-priority incidents with end-to-end ownership, automating with Ansible and Bash, and managing RHEL/CentOS/Ubuntu servers in production across hosted, AWS/Azure, and remote infrastructure, while maintaining SOPs and mentoring junior engineers on 24/7 rotational shifts.

Active Directory Ansible Authentication Automation AWS +26 skills

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Ensono

21 views 3 days ago

Senior Virtualization Systems Engineer

Open 36d APACSenior
India

Senior engineer at managed services provider Ensono who designs, administers, and optimizes enterprise VMware vSphere and Nutanix virtualization environments in Pune, leads datacenter migrations and infrastructure upgrades, and automates operations with PowerShell, PowerCLI, and Python. Role includes 24/7 rotational shifts and mentoring junior engineers.

Automation AWS Azure Cloud Cloud Native +11 skills

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Ensono

2 views 3 days ago

Senior Network Engineer

NewBe an early applicant APACSenior
India

Senior Network Engineer at managed service provider Ensono: runs and supports complex datacenter network infrastructure (~80% operations, 20% build), handling major incidents, RCA, and lifecycle management across routers, switches, firewalls, load balancers, Cisco ACI, and VMware NSX-T, working 24/7 rotational shifts in Bengaluru, Chennai, or Pune.

Ansible Automation AWS Azure BGP +18 skills

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Ensono

3 views 3 days ago

Data Center Operations Analyst - Mainframe Operations

NewBe an early applicant APAC
India

ABOUT US Ensono is a hybrid IT services provider that sees a world in transformation. We understand the world of business has become more complex, layered, and interdependent because we’re enabling the IT…

Cloud Db2 ITIL Jcl Mainframe +1 skills

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Ensono

4 views 3 days ago

Mainframe Systems Programmer - z/OS

NewBe an early applicant APACFull-timeJunior
India

Senior mainframe systems programmer at Ensono providing z/OS systems programming support to mainframe clients — performing z/OS (V2.5/V3.1) and ISV product upgrades and installations via SMP/E and zOSMF workflows, plus JES2/JES3, JCL, and environment support for storage, performance, and security teams.

Cloud Jcl Mainframe Networking

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Upstaff

3 days ago

Senior Business Analyst

NewBe an early applicant HybridNorth AmericaContractSenior
Canada

Contract Senior Business Analyst (via Upstaff) supporting the Government of Newfoundland and Labrador OCIO's MVAD modernization, moving legacy mainframe motor registration and ticketing systems to a unified modern platform. Hybrid role in St. John's covering requirements management, data migration, testing/UAT, and change management.

Data Quality .NET Mainframe Process Improvement Requirements Elicitation +1 skills

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Ensono

1 views 3 days ago

Expert Network Engineer

NewBe an early applicant APAC
India

Senior network expert (15+ yrs) at managed service provider Ensono: ~60% L3/L4 network operations — critical incident escalation, RCA and performance optimization — and 40% design/deployment of enterprise, data center and cloud networks using BGP/OSPF routing, Palo Alto/Fortinet/Check Point firewalls, F5 load balancers, Cisco ACI, VMware NSX and SD-WAN, on 24/7 rotational shifts.

AI Ansible API Automation AWS +32 skills

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Ensono

5 views 3 days ago

Mainframe Security Engineer - Logical Security

NewBe an early applicant APAC
India

Ensono is hiring a Mainframe Security Engineer in Chennai to administer RACF security on IBM z/OS mainframes for enterprise clients — managing user IDs, groups, access controls, SMF log monitoring, audit compliance, and digital certificates. Core tech: RACF, z/OS, TSO/ISPF, JCL, SDSF, SMF, zSecure, and subsystems like CICS, DB2, IMS, MQ.

Automation Cloud Corrective Action Cybersecurity Db2 +2 skills

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Zone IT Solutions Pty Ltd

3 days ago

Senior PL/I Mainframe Architect & Modernisation Lead

NewBe an early applicant APACLead
Australia

A lead consultant role in Sydney focused on PL/I development on IBM mainframes, modernising and remediating large legacy systems. Day to day involves complex migrations, troubleshooting, code reviews, technical leadership, testing, and performance tuning across the full development lifecycle.

Mainframe

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