Mainframe Cybersecurity Engineer

Post Date

Jul 21, 2026

Location

Plano,
Texas

ZIP/Postal Code

75024
US
Sep 20, 2026 Insight Global

Job Type

Perm

Category

Programmer / Developer

Req #

AXS-b911b533-b59c-4d5a-a36d-b509a5c2a7cb

Pay Rate

$130k - $150k (estimate)

Job Description

As a Mainframe Cybersecurity Software Engineer, you will take ownership of the security posture, core architecture, and ongoing evolution of Gen (formerly known as
COOL: Gen or CA Gen). This is a high-impact, visible role where you will apply your advanced cybersecurity expertise to influence all levels of product delivery. You will
guide architectural design, spearhead secure coding standards, and act as a technical mentor to other engineers. This is a hands-on technical role: you will write code, lead
code reviews, and influence testing strategy. Concurrently, you will serve as a subject matter expert and thought leader—championing security best practices in partnership with product management and customers.

We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to HR@insightglobal.com.To learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy: https://insightglobal.com/workforce-privacy-policy/.

Required Skills & Experience

. Minimum of 12 years of experience in software development.
. BA/BS in Computer Science or equivalent degree.
. Deep expertise and hands-on coding experience in at least two of the following: IBM Assembler, COBOL, PL/I, C, C++, Java, .NET.
. Experience with mainframe(z/OS) and distributed environments (Windows, Unix, Linux) and related security best practices.
. Understanding of complex microservices, APIs, databases, and Client-Server communication.
. Demonstrated experience implementing cybersecurity principles (e.g., cryptography, secure coding practices, access controls) and using industry-standard products like RACF, ACF2, Top Secret, and TLS.
. Strong command of object-oriented programming (OOP) principles and interlanguage communications (ILC) across hybrid environments.

Nice to Have Skills & Experience

. Expertise in deep-dive debugging, including reading system dumps, utilizing advanced diagnostic tools, and executing performance tuning.
. Experience executing penetration testing, including triage and remediation.
. Thorough understanding of z/OS system components and sub-systems, including z/OS Language Environment (LE), ISPF, CICS, IMS, WebSphere Liberty, and DB2.
. Experience working with enterprise middleware and network protocols, such as ECI, TCP/IP or IBM MQ.
. Knowledge and related product expertise in any of the following: Python, Typescript, Docker, Kubernetes, Spring Boot, Jakarta, Oracle, Db2, MS SQL Server,
ODBC, JDBC, ADO.NET, COM, Windows MFC, Jenkins, Ansible
. Working knowledge of Cloud Native Architectures, Containers, .NET, TCP/IP, Tuxedo, WebSphere, Liberty, WebLogic, JBoss (WildFly), InstallAnywhere, Eclipse
. Experience developing with or maintaining Gen (formerly known as COOL:Gen or CA Gen).

Benefit packages for this role will start on the 1st day of employment and include medical, dental, and vision insurance, as well as HSA, FSA, and DCFSA account options, and 401k retirement account access with employer matching. Employees in this role are also entitled to paid sick leave and/or other paid time off as provided by applicable law.