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Senior Information System Security Engineer; ISSE

Job in Frederick, Frederick County, Maryland, 21701, USA
Listing for: Belay Technologies
Full Time position
Listed on 2026-06-26
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, Information Security
Job Description & How to Apply Below
Position: Senior Information System Security Engineer (ISSE)

Belay Technologies has been voted Baltimore Business Journal's (BBJ) Best Places to Work 2019, runner‑up in 2020, and a finalist in 2021!

Belay Technologies is seeking a Sr. Information System Security Engineer (ISSE) with a solid understanding of security practices and policies as well as hands‑on vulnerability testing experience. The selected candidate will have numerous responsibilities from day to day drawn from a wide array of activities.

Responsibilities
  • Validating and verifying system security requirements and establishing system security designs for large-scale systems, major system elements, and interfacing systems that are part of a large complex network environment with geographically distributed components
  • Identifying and implementing appropriate information security architectures and functionality to ensure uniform application of security policy and enterprise solutions
  • Recommending and developing technical solutions, products, and standards based on current and desired system security architecture
  • Assessing and mitigating system security threats and risks throughout the program life cycle
  • Leading and/or contributing to the security planning, assessment, risk analysis, risk management, certification and awareness activities for various system and networking operations
  • Effectively collaborating with other internal technical experts on a day‑to‑day basis
  • Communicating with Program Managers and POCs from customer organizations when necessary, regarding Security issues of significant importance
  • Participating in Program Increment Planning and related agile team activities.
  • Working closely with System Engineering, Test Engineering, and Integration teams to ensure that the hardware and software architecture and implementation meets security requirements
  • Analyzing and assessing system implementation against multiple security compliance policies and recommending and implementing enhancements
  • Evaluating security solutions to ensure they meet customer specified requirements for processing information
  • Evaluating the impact of new development on the operational security posture of the system
  • Evaluating, reviewing, and testing critical software
  • Proposing, assessing, coordinating, implementing, and enforcing information systems security policies, standards, and methodologies
  • Auditing and assessing system security configuration settings using common methodologies and tools
  • Managing and enforcing security strategies and policies that affect various components of geographically distributed systems
  • Providing configuration management for security‑relevant information system software
  • Serving as a subject matter expert in security architecture to include providing advice to Program Managers, Customer technical experts, and internal program teams
  • Formulating security compliance requirements for new system features
  • Identifying and remediating security issues throughout the system
  • Supporting risk assessment, risk management, security control assessment, continuous monitoring, service design, and other IA program support functions
  • Working with development teams to enrich team‑wide understanding of different types of vulnerabilities, attack vectors and remediation approaches
  • Planning and conducting security verification testing of relevant type 1 devices.
Basic Qualifications
  • Must have at least 12 years of experience working as an ISSE on a large technical program
  • Must have a solid understanding of security practices and policies and hands‑on vulnerability testing experience
  • Must have experience applying Risk Management Framework
  • Must have experience formulating and assessing IT security policy
  • Must have demonstrated knowledge of and experience with common security tools, such as Nessus, NMAP and Wireshark hardware/software security implementation, communication protocol, encryption techniques/tools, and web services
  • Must have experience with secure configurations of commonly used desktop and server operating systems
  • Must be comfortable working on multiple systems and components simultaneously in various configurations
  • Must have strong verbal and written communications skills
  • Must be committed to adopting and adhering to best practices
  • Mu…
Position Requirements
10+ Years work experience
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