8975 - Site Reliability Engineer Cloud, Infrastructure and ITOps India Published Today

Unosquare; India; On-site; INR 1,800,000 - 3,200,000; Full time

Job summary

Unosquare seeks a Senior Site Reliability Engineer to apply Google-inspired SRE practices to hybrid systems running OCI and IBM Mainframe with z/OS 2.5. You will automate operations, define SLOs, reduce toil, and support CA-IDEAL online and COBOL batch apps.

The role blends legacy mainframe with cloud-native modernization and data replication or API orchestration on OCI. Ideal candidates will have 6+ years in SRE or mainframe operations, strong Python/Go skills, and expertise in z/OS 2.5,

Qualifications

• 6+ years in Site Reliability Engineering or Mainframe operations.
• Hands-on IBM z/OS 2.5 administration experience.
• Proficient in COBOL batch environments and batch scheduling.
• Automation-focused with programming in Python/Go; REXX/Assembler acceptable.

Responsibilities

• Own end-to-end reliability of OCI and IBM Mainframe systems.
• Establish SLIs/SLOs and manage error budgets.
• Develop automation tools for mainframe operations on z/OS 2.5.
• Participate in on-call incidents and postmortems.
• Eliminate toil through automation of batch and workload tasks.
• Support CA-IDEAL online apps and COBOL batch workflows.

Skills

SRE principles

Mainframe expertise

Python

Go

REXX

JCL

z/OS 2.5

OCI experience

Automation

Incident management

Education

Bachelor's or Master's in CS/Engineering

Tools

CA-IDEAL

CA Datacom/DB

JES2/JES3

GDPS/Parallel Sysplex

OCI connect for z/OS

DB2 on z/OS

Job description

We are seeking a Senior Site Reliability Engineer who applies Google-inspired SRE principles to ensure the reliability of hybrid systems spanning Oracle Cloud Infrastructure (OCI) and IBM Mainframe environments running z/OS 2.5.
You'll focus on production reliability as a software engineering discipline: automating operations, defining SLOs, reducing toil, and handling incidents, while providing specialized support for CA-IDEAL online applications and COBOL batch applications. This role is perfect for a mainframe expert eager to blend legacy systems with cloud-native practices, enabling seamless integration, modernization, or migration of mainframe workloads to OCI or other SaaS cloud (e.g., via data replication, API orchestration, or hybrid architectures leveraging OCI's compute, storage, and networking).
Embrace blameless postmortems, error budgets, and automation to keep critical business processes running at scale.
There's an opportunity to grow experience into SRE practices running Oracle EBS on OCI.

Key Responsibilities

Own the end-to-end reliability, performance, availability, and scalability of integrated OCI and IBM Mainframe systems

Establish and maintain Service Level Indicators (SLIs), Service Level Objectives (SLOs), and error budgets for mainframe-dependent services and OCI workloads

Develop automation tools and scripts to manage mainframe operations on z/OS 2.5, using languages like Python, Go, REXX, or JCL-integrated automation

Participate in on-call rotation for incident response, troubleshooting, root-cause analysis, and blameless postmortems across hybrid environments

Eliminate toil by automating repetitive mainframe tasks: job scheduling, batch monitoring, error handling, and system maintenance

Provide expert support for IBM Mainframe components:Administer z/OS 2.5 environments, including JES2/JES3, SMF, RACF security, WLM, and system performance tuning
Manage CA-IDEAL online applications: development, deployment, runtime support, integration with CA Datacom/DB, screen mapping, and transaction processing (e.g., under CICS or IMS)
Handle COBOL batch applications: JCL creation/submission, debugging, VSAM/ISAM file management, DB2 or IDMS database interactions, and batch optimization

Ensure high availability and disaster recovery for mainframe apps (e.g., using GDPS, Parallel Sysplex, or integration with OCI DR solutions)

Troubleshoot issues in hybrid setups: OCI services (Compute, Networking, Storage, Databases) interfacing with mainframe via connectors like OCI GoldenGate, API Gateway, or custom middleware

Conduct capacity planning, cost optimization, and performance tuning for mainframe-OCI integrations, including data synchronization and workload offloading

Promote SRE culture across teams, mentoring on mainframe reliability best practices

Minimum Qualifications

• 6+ years in Site Reliability Engineering, Systems Administration, or Mainframe Operations roles
• Extensive hands-on experience with IBM z/OS 2.5 (or earlier versions) administration, including IPL, subsystem management, and z/OSMF
• Proven expertise in CA-IDEAL for online application development and support (e.g., panels, programs, Datacom navigation)
• Strong background in COBOL batch programming and operations (JCL, utilities like IDCAMS/SORT, batch scheduling with CA-7/OPC or similar)
• Proficiency in software engineering for automation (Python/Go preferred; REXX, Assembler, or CLIST acceptable)
• Experience with OCI or similar clouds (AWS/GCP/Azure) for hybrid/mainframe integration
• Solid understanding of distributed systems, networking, and database concepts (e.g., DB2 on z/OS integrating with OCI databases)

Preferred Qualifications

• Experience integrating mainframes with OCI (e.g., using OCI Connect for z/OS, data replication tools, or hybrid cloud patterns)
• Knowledge of mainframe transaction managers (CICS, IMS) and databases (DB2, Datacom, VSAM) in CA-IDEAL/COBOL contexts
• Exposure to Google SRE practices (SLOs, toil reduction, production engineering)
• Certifications: IBM z/OS System Programmer, OCI Architect, or related mainframe credentials
• Background in mainframe modernization or migration projects (e.g., to cloud-native equivalents)
• Bachelor's or Master's in Computer Science, Engineering, or equivalent experience