IT Offensive Security Engineer III (Must Reside in Texas)

RBFCU Insurance Agency LLC; Texas; Híbrido; USD 130.000 - 190.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Hybrid work schedule

Professional development opportunities

Descripción de la vacante

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.

Formación

• 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.

Responsabilidades

• 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.

Conocimientos

Adversary emulation

Penetration testing

Red team operations

Threat intelligence

Python

Go

PowerShell

Cloud security

Educación

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

Herramientas

Python

Go

C/C++

PowerShell

JavaScript

Descripción del empleo

IT Offensive Security Engineer III (Must Reside in Texas)You may choose to display a cookie banner on the external site. You must specify the message in the cookie banner and may add a link to a relevant policy. If you are unfamiliar with these requirements, please seek the advice of legal counsel.### IT Offensive Security Engineer III (Must Reside in Texas)Apply: ASC - San Antonio: Full time: Posted 2 Days Ago: 015537**Job Description and Requirements**Randolph-Brooks Federal Credit Union is currently searching for an experienced and talented **Offensive Security Engineer III** to join our amazing **IT Security** team! The **Offensive Security Engineer III** will have the ability to work a hybrid schedule (remote/onsite) after a period of training (time frame may vary). Training will take place at the RBFCU Administrative Service Center: **1 Ikea-RBFCU Pkwy, Live Oak, Texas 78233.** **All applicants must reside within the state of Texas and have the capability of performing all of the work from their home in Texas.** To successfully work from home, employees must have access to a minimum internet connection as noted by RBFCU. * Must have a reliable home internet provider and the ability to hard wire a connection directly to modem (Ethernet cable provided).* Must be able to provide a workspace at home that is safe, suitable for work, and within a distraction free environment The Offensive Security Engineer III leads complex, intelligence-informed adversary emulations that test how well the organization’s people, processes, architecture, and technology withstand realistic multi-stage attacks. The role designs and executes campaigns across identity, endpoints, networks, applications, APIs, cloud platforms, data environments, software delivery systems, and other authorized surfaces, including controlled human-factor and physical scenarios when explicitly approved. The engineer evaluates attack-path viability and the effectiveness of preventive, detective, responsive, and recovery controls, then translates demonstrated compromise paths into systemic improvements across security and engineering. This role provides technical and engagement leadership, develops custom offensive tooling and infrastructure, manages operational risk, and coordinates closely with threat intelligence, SOC, incident response, security engineering, legal, privacy, physical security, and business stakeholders. The Senior Red Team Engineer raises the maturity of both offense and defense through purple-team collaboration, detection validation, rigorous reporting, mentorship, and repeatable assessment methods. **Essential Functions and Responsibilities:** * Lead complex, multi-domain adversary-emulation campaigns targeting critical services, high-value assets, privileged identities, cloud control planes, applications, data, and software delivery systems.* Translate threat intelligence and business context into campaign objectives, adversary profiles, attack hypotheses, target selections, techniques, success criteria, and measurable defensive outcomes.* Design engagement plans, rules of engagement, safety controls, communications, deconfliction, escalation paths, data-handling requirements, and technical workstreams.* Execute and supervise advanced attack activity involving stealth, persistence, identity compromise, lateral movement, cloud privilege escalation, application exploitation, data access, and objective demonstration.* Lead controlled social-engineering, physical, wireless, third-party, or assumed-breach scenarios when explicitly approved by the required business, legal, privacy, human resources, physical security, and risk authorities.* Develop custom tooling, implants, payloads, test harnesses, automation, redirectors, infrastructure, and operational-security practices appropriate to authorized objectives.* Evaluate defense-in-depth performance across prevention, identity, segmentation, telemetry, detection, investigation, containment, eradication, recovery, and resilience.* Lead purple-team exercises and convert engagement observations into high-value detections, hunts, playbooks, architecture improvements, control validation, and remediation priorities.* Produce executive and technical narratives that connect attack paths and defensive gaps to business risk, systemic causes, and prioritized corrective actions.* Mentor offensive and defensive engineers, conduct technical reviews, and lead lessons-learned activities that improve engagement safety, realism, repeatability, and impact. **Requirements:** * Bachelor's degree in Computer Science, Management Information Systems, Cybersecurity, Information Technology, or a related field; or equivalent combination of education and experience.* Minimum 3-5 years conducting adversary emulation, penetration testing, red team operations, or advanced security assessments.* Deep hands-on experience leading multi-stage adversary emulations and complex assessments across several enterprise technology domains.* Advanced knowledge of identity attacks, endpoint tradecraft, network protocols, application and API exploitation, cloud attack paths, persistence, command and control, evasion, and data access techniques.* Experience designing rules of engagement, managing testing risk, coordinating deconfliction, protecting sensitive data, and making stop-work decisions during live exercises.* Production-quality engineering experience using Python, Go, C#, C/C++, Rust, PowerShell, JavaScript, APIs, infrastructure automation, or comparable technologies.* Experience developing or modifying offensive tools, payloads, infrastructure, attack automation, and validation methods while maintaining operational security.* Advanced technical judgment to balance realism, stealth, evidence, business impact, legal and ethical boundaries, safety, and operational continuity.* Strong communication, facilitation, and stakeholder engagement skills, including constructive debriefs and concise communication to senior leadership.* Experience emulating advanced threat actors in hybrid and multi-cloud environments, identity systems, software supply chains, data platforms, AI systems, or critical infrastructure.* Experience with advanced application exploitation, exploit development, malware research, reverse engineering, cloud red teaming, wireless testing, or hardware security. **Skills / Certification / Licensing:** * Serves as a subject-matter expert across adversary emulation, identity, applications, cloud, endpoints, networks, offensive tooling, operational security, and defensive validation.* Defines engagement strategy, technical methods, safety controls, priorities, and deliverables for complex campaigns.* Develops novel attack paths, adapts to mature controls, and connects demonstrated compromise to systemic technical and process causes.* Influences multiple technology teams, critical services, security platforms, architectures, and program-level defense outcomes.* Builds alignment among offensive security, SOC, incident response, engineering, threat intelligence, legal, privacy, physical security, risk, and leadership.* Leads significant engagements, mentors others, sets technical and safety expectations, and raises offensive and defensive quality.* Establishes enterprise offensive-security direction, leads the highest-consequence assessments, and creates organization-wide capabilities and trusted governance. ***All qualified applicants will receive consideration for employment without regard to race, color, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, or other legally protected status.***