Mainframe Network

Mainframe Network Engineer Jobs

2 jobs found

1d ago

Mainframe and Web Application Security Senior Engineer - Senior Penetration Tester

Truist Bank Charlotte, NC 🇺🇸 Remote

Charlotte, NC

1d ago

$140k - $180k/yr Full time Application Security Cybersecurity Tools Identity and Access Management

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Job Description

Truist Bank is seeking a Senior Penetration Tester to lead advanced security assessments with a primary focus on enterprise mainframe environments, including z/OS. This role performs black box and grey box testing, documents and defends results, and works with engineering and risk partners to reduce exposure through repeatable testing methods and automation.

Responsibilities

Conduct black box, grey box, and assumed breach penetration tests of enterprise z/OS environments, including USS (Unix System Services) and external security manager subsystems such as RACF, ACF2, and Top Secret.
Assess mainframe workloads and technologies including CICS, IMS, Db2, MQ, batch processing using JCL and JES2, and TSO/ISPF usage.
Test network-facing services such as TN3270, FTP, Z/OS Connect, Rest APIs, and NJE.
Apply manual techniques and custom scripting using REXX, JCL, Assembler, and Python, along with offensive tooling to enumerate users and resources, map datasets, and evaluate access to unprotected spool and job output.
Exploit misconfigured CICS transactions and insecure interfaces, and leverage findings to assess exploitability and business impact.
Determine finding severity and risk using sound judgment based on evaluated exploitability and potential impact.
Document findings with clear reproduction steps, supporting evidence, impact statements, and practical remediation recommendations.
Present and defend technical findings in discussions with application teams, mainframe engineers, technology leaders, risk partners, and other stakeholders.
Perform validation and retesting to confirm remediation and risk reduction.
Maintain testing evidence to support audit, regulatory, and compliance requirements, including PCI DSS and SOX.
Partner with internal and external testing teams to improve mainframe testing coverage, methodologies, playbooks, tooling, automation, and repeatable processes.
Conduct peer reviews of penetration testing reports and provide technical guidance and mentorship to other security professionals.
Maintain current knowledge of mainframe attack techniques, security controls, platform changes, offensive security practices, and relevant industry threats.

Required Qualifications

Bachelor’s degree or equivalent education, training, and work-related experience.
Minimum of 7 years of experience in security engineering or related cybersecurity roles.
Deep specialized knowledge of cybersecurity principles, theories, and concepts.
Proven experience in software development lifecycle security practices.
Deep knowledge of threat modeling, security testing, and penetration testing.
Experience implementing and managing complex information security technologies.

Preferred Qualifications

Five or more years of penetration testing, red team, offensive security, vulnerability research, or related cybersecurity experience.
Hands-on experience assessing mainframe environments, including z/OS and common security components such as RACF, ACF2, or Top Secret.
Knowledge of mainframe architecture, identity and access management, privileged access, JCL, TSO/ISPF, CICS, Db2, network services, system configuration, and security hardening.
Experience identifying and validating mainframe vulnerabilities, misconfigurations, excessive access, insecure interfaces, and attack paths between mainframe and distributed environments.
Strong technical writing and communication skills, including the ability to explain and defend technical findings to technical and non-technical audiences.
Ability to independently manage multiple testing engagements, adjust approach as priorities and requirements evolve, and drive work to completion.
Experience developing scripts, automation, or AI-enabled tooling to streamline testing activities and improve repeatable processes.
Experience in banking, financial services, or another highly regulated industry.
Relevant offensive security certifications such as OSCP, OSEP, OSWE, GPEN, GXPN, or equivalent credentials.

Technology Stack

z/OS
USS (Unix System Services)
RACF, ACF2, Top Secret
CICS, IMS, db2, MQ
JCL, JES2, TSO/ISPF
TN3270, FTP, Z/OS Connect, Rest APIs, NJE
REXX, Assembler, Python

Compensation

Annual base salary: USD 140,000 - 180,000. Additional incentive pay is available for this position.

Benefits

Benefits eligibility for all regular teammates (not temporary or contingent workers) working 20 hours or more per week, with specific benefits determined by the division offering the position.
Medical, dental, vision, life insurance, disability, accidental death and dismemberment, tax-preferred savings accounts, and a 401k plan.
No less than 10 days of vacation during the first year of employment (prorated by date of hire and full-time or part-time status), along with 10 sick days (also prorated), and paid holidays.
May be eligible for Truist’s defined benefit pension plan, restricted stock units, and/or a deferred compensation plan depending on position and division.

Telecommuting and Workstyle

Telecommuting/remote workstyle may be considered for well-qualified individuals located outside of the Truist footprint.
Work hours will support Eastern Standard Time.

Work Authorization

For this opportunity, Truist will not sponsor an applicant for work visa status or employment authorization and will not offer immigration-related support for this position.

Location and Schedule

Location: Charlotte, NC (remote)
Work shift: 1st shift (United States of America)
Language fluency: English (Required)

Education

Bachelor’s degree or equivalent education, training, and work-related experience.

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12d ago

Senior Mainframe Network Engineer | TCP/IP, SNA/APPN, IBM NetView & OMEGAMON

Experis Plano, TX

Plano, TX

12d ago

$70 - $73/hr Contract Senior Engineering Information Technology (IT)

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Job Description

Experis is seeking a Senior Mainframe Network Engineer to support mainframe network integrations within the Network Operations Department. The role focuses on TCP/IP and SNA/APPN connectivity, with an emphasis on operating and improving high-availability network services for business-critical transaction and batch-processing workloads.

This is a contract opportunity based in Plano, TX (onsite), with an hourly rate of $70–$73/hr. You will troubleshoot complex issues across multiple network layers and help modernize mainframe network architectures using observability, telemetry, and automation tools such as IBM NetView and IBM Omegamon.

Responsibilities

Engineer and operate robust network solutions supporting mainframe TCP/IP and SNA/APPN system integrations.
Optimize high-availability connectivity for high-velocity transactions and batch-processing systems.
Lead modernization of mainframe network architectures, including enhancements in observability and telemetry.
Advance automation and AI-assisted operations to reduce manual effort, improve consistency, and strengthen network reliability.
Diagnose and resolve complex issues across routing, switching, firewalls, load balancers, and mainframe network stacks.

Requirements

Extensive experience supporting enterprise-scale networks with high availability and reliability requirements.
Strong foundational expertise in TCP/IP, including OSPF, EIGRP, and Layer 2 technologies such as VLANs and EtherChannel/Portchannel.
Proficiency in packet trace analysis and multi-layer troubleshooting techniques.
Experience supporting SNA/APPN networking environments.
Working knowledge of switches, firewalls, load balancers, VPNs, certificates, TLS/SSL, and REST APIs, along with automation tools such as IBM Netview and IBM Omegamon.

Technologies

TCP/IP, SNA/APPN
OSPF, EIGRP
VLANs, EtherChannel/Portchannel
Packet trace analysis
Switches, firewalls, load balancers, VPNs
Certificates, TLS/SSL
REST APIs
IBM Netview, IBM Omegamon

Benefits

Medical and Prescription Drug Plans
Dental Plan
Vision Plan
Health Savings Account
Health Flexible Spending Account
Dependent Care Flexible Spending Account
Supplemental Life Insurance
Short Term and Long Term Disability Insurance
Business Travel Insurance
401(k), Plus Match
Weekly Pay

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Mainframe Network Engineer Jobs

Mainframe and Web Application Security Senior Engineer - Senior Penetration Tester

Senior Mainframe Network Engineer | TCP/IP, SNA/APPN, IBM NetView & OMEGAMON

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