Senior Offensive Security Engineer III — Hybrid (TX)

RBFCU Insurance Agency LLC; Texas; Hybrid; USD 130,000 - 190,000; Full time

Benefits offered by this job

Hybrid work schedule

Professional development opportunities

Job summary

Randolph-Brooks Federal Credit Union is seeking an experienced Offensive Security Engineer III to join its IT Security team in Texas, performing advanced adversary emulations across identity, endpoints, networks, and cloud.

The role blends offensive testing with defensive validation, requires leading campaigns, developing tooling, and mentoring engineers. Hybrid work from Texas with training at Live Oak campus.

Qualifications

• Bachelor's degree or equivalent in CS, MIS, Cybersecurity, IT, or related field.
• 3–5 years conducting adversary emulation, red team ops, or advanced security assessments.
• Experience leading multi-domain adversary emulations across enterprise tech.
• Strong knowledge of identity attacks, endpoints, networks, apps, cloud paths, and C2.

Responsibilities

• Lead complex adversary-emulation campaigns across multiple surfaces.
• Translate threat intel into campaign objectives and success criteria.
• Design rules of engagement, safety controls, and risk-aware engagement plans.
• Develop custom tooling and orchestrate attack simulations end-to-end.

Skills

Adversary emulation

Penetration testing

Red team operations

Threat intelligence

Python

Go

PowerShell

Cloud security

Education

Bachelor's degree in Computer Science / MIS / Cybersecurity or related field

Tools

Python

Go

C/C++

PowerShell

JavaScript

Job description

Randolph-Brooks Federal Credit Union is seeking an experienced Offensive Security Engineer III to join its IT Security team in Texas, performing advanced adversary emulations across identity, endpoints, networks, and cloud.

The role blends offensive testing with defensive validation, requires leading campaigns, developing tooling, and mentoring engineers. Hybrid work from Texas with training at Live Oak campus.