System Security Engineer

Markon

3d

About The Position

Markon is seeking an experienced System Security Engineer to join a large, collaborative team of developers, software engineers, and data engineers supporting mission-critical systems. This role focuses on secure system design, cloud integration, accreditation support, and lifecycle security engineering in a fast-paced Agile environment.
The ideal candidate will bring strong cloud, security, and systems engineering experience, along with the ability to support accreditation efforts and provide high-level customer support.

Requirements

• Active TS/SCI with Polygraph
• Bachelor’s degree and 11–15 years of relevant experience
• Experience working in AWS cloud environments
• Experience with SQL
• Experience in Agile environments using Jira and Confluence (ServiceNow ESP experience preferred)
• Experience with Infrastructure as Code tools such as Terraform and/or AWS CloudFormation
• Experience working in DevSecOps environments
• Experience providing Linux system administration
• Familiarity with security accreditation processes and tools, including: RMF and NIST frameworks Accreditation tools (e.g., Xacta, GreenLight) System and vulnerability scanning POA&M tracking

Nice To Haves

• Experience supporting IdAM / ICAM systems (Authentication, Authorization, Attribute Management)
• Experience with Entitlement Management and Digital Policy Management systems
• LDAP experience
• Security certifications (e.g., Security+, CISSP)
• AWS Certification
• Experience with BPM / BAW platforms

Responsibilities

• Support system build-outs, testing, maintenance, monitoring, and ongoing enhancements
• Decompose requirements and ensure system designs align with enterprise architecture and allocated requirements
• Translate customer requirements into hardware and software specifications through functional analysis, cost estimation, and interface definition studies
• Identify system integrity risks and implement solutions across the full system lifecycle (concept through disposal)
• Integrate systems and services and clearly communicate technical findings and recommendations
• Address user requirements and automate/improve existing systems to enhance workflow efficiency
• Support the development, documentation, and execution of system security policies
• Support Authorization to Operate (ATO) / accreditation efforts for customer systems and applications
• Conduct security analysis and maintain system and workflow documentation following updates or iteration changes
• Perform application demonstrations and end-user training as required
• Support release management activities, including deployment readiness, coordination, and release notes documentation
• Note: Occasional after-hours support (typically once per month, 5:00 PM – 9:00 PM) may be required
• Provide Tier 3 and Tier 4 support to internal teams and customers

Benefits

• Medical
• Dental
• Vision
• Life Insurance
• Short-Term Disability
• Long-Term Disability
• 401(k) match
• Flexible Spending Accounts
• EAP
• Training and Tuition Assistance
• Paid Time Off
• Holidays

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level