z/OS Transaction & Network Engineer

We are seeking a senior z/OS Transaction & Network Engineer to support and optimize mission-critical IBM mainframe transaction and network environments supporting high-volume enterprise and retail workloads.

This role focuses on CICS / IMS transaction systems and z/OS networking, ensuring performance, availability, and resiliency in a 24/7 production environment.

The client is seeking a senior, hands-on z/OS Transaction & Network Engineer who can own both online transaction processing and mainframe network connectivity in a 24/7, high-volume enterprise (retail-style) environment.

This is a remote role (USA only).

Core intent of the role:
They want someone who can keep CICS/IMS transactions fast, available, and resilient, while also ensuring reliable, secure mainframe-to-distributed connectivity.

What matters most to the client:
1. Transaction systems ownership (CICS / IMS TM):

• Install, configure, and support CICS and/or IMS Transaction Manager
• Ensure high availability and performance for online transactions
• Transaction tuning, throughput optimization, and capacity analysis
• Strong experience in 24/7 production support, incidents, and RCA
• Supporting upgrades, patches, and subsystem maintenance

2. z/OS networking & connectivity expertise:

• Deep knowledge of VTAM, TCP/IP, and SNA

• Mainframe-to-distributed integration:

  • MQ, FTP, APIs, sockets

• Troubleshooting transaction flow, latency, and connectivity issues

• Understanding of network security, certificates, and encryption

• Coordination with enterprise network teams

3. Performance & resiliency mindset:

• Monitoring with OMEGAMON, RMF, SMF

• Supporting SLA-driven, high-volume workloads

• Ensuring resiliency, availability, and regulatory compliance

4. Enterprise & modernization exposure:

• Change, release, and problem management

• Documentation and operational runbooks

• Supporting cloud and distributed integration initiatives

Job Summary:
We are seeking an experienced z/OS Transaction & Network Engineer to support and optimize mission-critical mainframe transaction processing and network environments. This role focuses on CICS/IMS transaction systems, VTAM/TCP-IP networking, performance, availability, and resiliency, supporting high-volume enterprise and retail workloads.

Key Responsibilities:-
Transaction Systems:

• Install, configure, and support CICS and/or IMS Transaction Manager (IMS TM) environments
• Ensure high availability, performance, and stability of online transaction processing systems
• Perform transaction performance tuning, capacity analysis, and workload optimization
• Support 24/7 production environments, incident response, and root cause analysis
• Manage upgrades, patches, and maintenance for transaction subsystems
• Collaborate with application teams to support transaction design and throughput improvements

Network & Connectivity:

• Administer and support z/OS network components, including VTAM, TCP/IP, and SNA
• Configure and manage mainframe-to-distributed connectivity (MQ, FTP, APIs, sockets)
• Troubleshoot network latency, connectivity, and transaction flow issues
• Support network security, certificates, and encryption standards
• Coordinate with enterprise network teams for end-to-end connectivity

General Responsibilities:

• Monitor and analyze system and transaction performance using OMEGAMON, RMF, and SMF
• Ensure compliance with security, audit, and regulatory requirements
• Participate in change, problem, and release management processes
• Document configurations, procedures, and operational runbooks
• Support modernization and integration initiatives involving cloud and distributed platforms

Required Skills & Qualifications:

• 8+ years of hands-on experience in z/OS transaction and network engineering
• Strong expertise in CICS and/or IMS TM
• In-depth knowledge of VTAM, TCP/IP, and z/OS networking concepts
• Experience with transaction and network performance tuning
• Proficiency in JCL, ISPF, SDSF, and TSO
• Experience supporting high-volume, 24/7 production environments
• Strong troubleshooting and problem-resolution skills

Notes:- All qualified applicants will receive consideration for employment without regard to race, color, religion, religious creed, sex, national origin, ancestry, age, physical or mental disability, medical condition, genetic information, military and veteran status, marital status, pregnancy, gender, gender expression, gender identity, sexual orientation, or any other characteristic protected by local law, regulation, or ordinance.

Benefits: Danta offers a compensation package to all W2 employees that are competitive in the industry. It consists of competitive pay, the option to elect healthcare insurance (Dental, Medical, Vision), Major holidays and Paid sick leave as per state law.

The rate/ Salary range is dependent on numerous factors including Qualification, Experience and Location.