Senior Information Systems Security Engineer (ISSE)

Job overview

The Senior Information Systems Security Engineer (ISSE) works onsite in Rome, NY. The stated salary range is $125,000–$155,000 per year. The role supports Sigma Defense’s cybersecurity engineering work. The engineer implements and maintains security controls across the system lifecycle, translating Risk Management Framework and Zero Trust requirements into technical controls, automation, and continuous monitoring practices.

What you'll do

• Implement and maintain security controls
• apply Risk Management Framework principles in Zero Trust architectures
• conduct vulnerability assessment and continuous monitoring using ACAS
• analyze scan results and coordinate remediation
• design and maintain Azure security controls and policies
• use Microsoft Defender for Cloud to assess posture and compliance
• develop Xacta automation for documentation and evidence
• automate security processes with Infrastructure as Code
• integrate security validation into deployment workflows
• collaborate with architects, cloud engineers, DevSecOps, administrators, and cybersecurity personnel
• support assessments and authorization activities.

What we're looking for

Skills & competencies

senior information systems security engineer

cybersecurity

information systems security

acas

risk management framework

zero trust

microsoft azure

xacta

infrastructure as code

rome ny

sigma defense

$125k–$155k

Work arrangement

• Weekend coverage required

Benefits & perks

• Dental and vision insurance
• medical insurance including HSA, FSA, and DFSA plans
• life and AD&D coverage
• EAP
• 401(k) with company matching
• 160 hours of PTO
• 12 floating holidays
• educational assistance.

Why this role

Requires 8+ years of relevant experience, a bachelor's degree in cybersecurity or a related field, U.S. citizenship, and CompTIA Security+, CISSP, and ACAS Operator and Supervisor Course certifications. Candidate must possess or be able to obtain an active TS/SCI clearance or higher; clearance may be sponsored for the right candidate.

About the employer

Sigma Defense is hiring for this role. Industry: Computer Systems Design Services. Sector: 54.