Lead Offensive Cybersecurity Engineer — Onsite Cedar Rapids

Cybersecurity Jobs; Cedar Rapids (IA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Onsite in Cedar Rapids

Workplace flexibility

Unlimited PTO

Education assistance

Job summary

Parry Labs, LLC in Cedar Rapids, IA is seeking a senior security engineer to lead authorized offensive security assessments across software, networks, and distributed systems. You will identify vulnerabilities, demonstrate impact, and collaborate with engineers to verify remediation, while developing threat models and security test plans.

You will report to a functional engineering manager with direction from the Chief Engineer, with a target start in February/March 2027.

Qualifications

• Bachelor’s degree in cybersecurity, CS, engineering, or related field, or equivalent relevant experience.

Responsibilities

• Develop threat models and security test plans aligned to system requirements and potential failure modes.
• Define authorized test scope, rules of engagement, and stop conditions with program stakeholders.
• Conduct penetration testing, protocol analysis, and vulnerability research within approved test environments.
• Build protocol and parser fuzzing tools.
• Add repeatable security checks to automated test workflows.
• Assess Linux services and network interfaces.
• Review Rust or C/C++ code for security weaknesses.
• Evaluate authentication, digital signatures, replay protection, and key handling with engineers.
• Document findings with impact and remediation priorities.
• Retest fixes and preserve test evidence.
• Support red-team and blue-team exercises.
• Maintain assessment signoff separately from implementation ownership.

Skills

Offensive security

Penetration testing

Threat modeling

Security test planning

Red-team/Blue-team

Documentation

Education

Bachelor’s degree or equivalent experience in cybersecurity/CS/engineering

Tools

Rust

C/C++

Python

Linux

TCP/IP

Job description

Parry Labs, LLC in Cedar Rapids, IA is seeking a senior security engineer to lead authorized offensive security assessments across software, networks, and distributed systems. You will identify vulnerabilities, demonstrate impact, and collaborate with engineers to verify remediation, while developing threat models and security test plans.

You will report to a functional engineering manager with direction from the Chief Engineer, with a target start in February/March 2027.