The Functionary
Website:
thefunctionary.com
Job details:
Job Description:
We are seeking a Senior Site Reliability Engineer applying Google-inspired SRE principles to ensure reliability across hybrid environments spanning Oracle Cloud Infrastructure (OCI) and IBM mainframe systems running z/OS 2.5.
This role suits a mainframe expert looking to combine legacy systems with cloud-native practices and support modernization or migration of workloads to OCI through APIs, data replication, and hybrid architectures.
You will treat reliability as a software engineering discipline—automating operations, defining SLOs, reducing toil, and managing incidents—while supporting CA-IDEAL online and COBOL batch applications.
You will apply SRE practices such as blameless postmortems, error budgets, and automation to maintain high system availability, with exposure to Oracle E-Business Suite (EBS) on OCI.
Key Responsibilities
- Own reliability, performance, availability, and scalability across OCI and IBM mainframe systems.
- Define and manage SLIs, SLOs, and error budgets for hybrid services.
- Automate mainframe operations using Python, Go, REXX, and JCL-based tooling.
- Support incident response, on-call rotation, root-cause analysis, and postmortems.
- Reduce toil by automating batch jobs, scheduling, monitoring, and maintenance. tasks.
- Administer z/OS 2.5 environments (JES2/3, SMF, RACF, WLM, performance tuning).
- Support CA-IDEAL applications, including CICS/IMS integrations and CA Datacom/DB.
- Manage COBOL batch processing (JCL, VSAM, DB2/IDMS, debugging, optimization).
- Ensure HA/DR using GDPS, Parallel Sysplex, and OCI-based recovery solutions.
- Troubleshoot OCI–mainframe integrations via GoldenGate, APIs, and middleware.
- Drive capacity planning, cost optimization, and performance tuning.
- Promote SRE practices and mentor teams on reliability engineering in hybrid environments.
Must haves:
- 6+ years of experience in Site Reliability Engineering, Systems Administration, or Mainframe Operations.
- Hands-on experience with IBM z/OS 2.5 (or earlier), including IPL, subsystem management, and z/OSMF
- Proven expertise in CA-IDEAL for online application development and support (panels, programs, Datacom navigation)
- Strong experience in COBOL batch operations, including JCL, utilities (IDCAMS, SORT), and scheduling tools (CA-7, OPC, or equivalent)
- Proficiency in automation and scripting (Python or Go preferred; REXX, Assembler, or CLIST acceptable)
- Experience with OCI or other cloud platforms (AWS, GCP, Azure) in hybrid or mainframe integration environments
- Solid understanding of distributed systems, networking, and databases (e.g., DB2 on z/OS integrated with cloud databases)
Nice to have
- Bachelor’s or Master’s degree in Computer Science, Engineering, or equivalent experience
- Experience integrating mainframes with OCI (e.g., OCI Connect for z/OS, data replication, hybrid cloud architectures)
- Knowledge of mainframe transaction systems (CICS, IMS) and databases (DB2, Datacom, VSAM) in CA-IDEAL/COBOL environments
- Exposure to Google SRE practices (SLOs, error budgets, toil reduction, production engineering)
- Relevant certifications (IBM z/OS System Programmer, OCI Architect, or equivalent mainframe credentials)
- Experience in mainframe modernization or migration projects to cloud-native platforms
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