SRE: Mainframe & API Reliability (Remote Options)

Huntington National Bank; Columbus (OH); Hybrid; USD 57,000 - 113,000; Full time

Job summary

Huntington National Bank seeks an experienced SRE specialist to provide production support for Mainframe apps, APIs, and microservices. You will troubleshoot incidents, monitor batch processing, and support API lifecycles including SOAP‑to‑REST migrations. Strong knowledge of z/OS, COBOL, MQ, and API gateways is required.

You will collaborate across DevOps, Middleware, and Vendor teams to enhance observability, automation, and reliability while upholding SLAs and operational excellence.

Qualifications

• Bachelor’s Degree OR minimum 3 Years of related experience may be considered.
• Mainframe support experience with z/OS, MVS, CICS, MQ, DB2, COBOL, JCL, and TSO/ISPF.
• Experience supporting batch scheduling tools such as Zeke, Zena, CA7, Control-M, or equivalent.
• Hands-on experience supporting REST APIs, SOAP Web Services, Microservices, and Middleware platforms.
• Experience supporting API modernization and SOAP-to-REST migration programs.
• Knowledge of JSON, XML, REST, SOAP, API Gateway technologies, and Microservices architecture.
• Experience troubleshooting API failures, authentication issues, SSL/TLS certificates, performance bottlenecks, and integration failures.

Responsibilities

• Provide SRE production support for Mainframe applications, APIs, Web Services, and Microservices.
• Troubleshoot incidents, outages, batch failures, API failures, performance issues, and integration problems.
• Support Mainframe technologies including z/OS, MVS, CICS, MQ, DB2, COBOL, JCL, TSO/ISPF, Easytrieve, IBM Utilities, SORT, FileAid, Xpediter, ChangeMan, AbendAid, and related tools.
• Monitor and manage batch processing using scheduling tools such as Zeke, Zena, CA7, Control-M, or equivalent.
• Support and troubleshoot REST APIs, SOAP Web Services, API Gateways, Middleware platforms, and Microservices, including authentication, SSL/TLS, performance, and integration issues.
• Support API modernization initiatives, including SOAP-to-REST migrations, API onboarding, production cutovers, and post-implementation stabilization.
• Validate JSON/XML payloads, request/response mappings, and API data transformation issues.
• Support API testing and troubleshooting using Postman, SoapUI, Swagger/OpenAPI, or similar tools.
• Work closely with Development teams during migration, deployment, cutover, and stabilization activities.
• Build and enhance monitoring, alerting, dashboards, observability, and self-healing capabilities.
• Utilize monitoring tools such as Dynatrace, Splunk, Grafana, Azure Monitor, AppDynamics, CloudWatch, or equivalent.
• Drive process enhancements, streamline communication, and optimize delivery through innovative practices from discovery to deployment.
• Drive automation, eliminate operational toil, improve availability, and reduce recurring incidents.
• Perform Root Cause Analysis (RCA), problem management, and continuous service improvement initiatives.
• Manage customer-impacting incidents, technical escalations, vendor engagements, and business communications.
• Support production releases, deployments, change management activities, and post-deployment validation.
• Maintain runbooks, knowledge articles, support documentation, and operational procedures.
• Collaborate with Infrastructure, Cloud, Development, Middleware, and Vendor teams to ensure system reliability and availability.
• Coordinate with various teams to document production issues requiring code fixes and assist with validating and closing defects.
• Support message-based integration technologies such as IBM MQ, Kafka, Event Hub, or similar enterprise messaging platforms.
• Ensure adherence to SLA, SLO, availability, performance, and operational excellence targets.

Skills

Mainframe expertise

z/OS

CICS

MQ

DB2

COBOL

JCL

TSO/ISPF

REST APIs

SOAP/Web Services

Microservices

API Gateways

Monitoring tools

Dynatrace

Splunk

Grafana

Cloud monitoring

SQL

IBM MQ

Kafka

Education

Bachelor’s Degree

Tools

CA7

Control-M

Zeke

Zena

SoapUI

Postman

Swagger/OpenAPI

Job description

Huntington National Bank seeks an experienced SRE specialist to provide production support for Mainframe apps, APIs, and microservices. You will troubleshoot incidents, monitor batch processing, and support API lifecycles including SOAP‑to‑REST migrations. Strong knowledge of z/OS, COBOL, MQ, and API gateways is required.

You will collaborate across DevOps, Middleware, and Vendor teams to enhance observability, automation, and reliability while upholding SLAs and operational excellence.