ITTConnect

z/OS Connect API Engineer

Posted Yesterday

Be an Early Applicant

Columbus, OH, USA

In-Office

Mid level

Agency • Professional Services

IT Recruintg & Staffing

The Role

Modernize mainframe services by designing and developing REST APIs with IBM z/OS Connect, exposing CICS/DB2 transactions, building OpenAPI specs and YAML mappings, configuring authentication (RACF, JWT, OAuth2/OIDC, certificates), implementing CI/CD (GitHub Actions, Gradle), integrating with enterprise API gateway (APIM), troubleshooting performance/security issues, and creating reusable onboarding templates and accelerators.

Summary Generated by Built In

ITTConnect is seeking a z/OS Connect API Engineer to work on site for a client in the Columbus, OH area. This is a contract position with a client that is a global leader in consulting, digital transformation, technology and engineering services with over 300,000 team members in nearly 50 countries. The end client is in the Utilities sector.

Job location: Columbus, OH (on site work)

The z/OS Connect API Engineer is responsible for modernizing mainframe services through API enablement using IBM z/OS Connect. This role bridges traditional CICS/COBOL systems with modern API and cloud-native architectures while enabling secure, scalable, and reusable integration capabilities.

Key Responsibilities:

Develop REST APIs using IBM z/OS Connect.
Expose CICS and DB2 transactions through modern API contracts.
Build and maintain API service definitions, mappings, and YAML configurations.
Develop OpenAPI specifications aligned with enterprise standards.
Configure and support JWT, OAuth2, OIDC, RACF, and certificate-based authentication.
Implement CI/CD deployment pipelines using GitHub Actions and Gradle.
Support integration with APIM as the enterprise API gateway.
Troubleshoot performance, security, and connectivity issues.
Develop onboarding templates and reusable API accelerators.
Participate in mainframe modernization initiatives and Shadow Service migration efforts.

Requirements

IBM z/OS Connect
REST APIs
OpenAPI
JSON/XML
CICS
COBOL
DB2
RACF
GitHub
CI/CD

Preferred Skills:

APIM
Java
Spring Boot
OAuth2/OIDC
Mainframe modernization programs

Skills Required

IBM z/OS Connect
REST APIs
OpenAPI
JSON
XML
CICS
COBOL
DB2
RACF
GitHub
CI/CD
GitHub Actions
Gradle
APIM
Java
Spring Boot
OAuth2/OIDC
Mainframe modernization programs

View all jobs at ITTConnect

View ITTConnect Profile

Report Job

Am I A Good Fit?

beta

Get Personalized Job Insights.

Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company

Year Founded: 2017

What We Do

ITTConnect is an innovative provider of IT Professional Services focused on finding the best IT talent. Through a network of specialized IT recruiters we efficiently connect employers to top IT professionals. We assist companies to reach their recruitment objectives through flexible and tailored recruiting and staff augmentation services.