Senior Information Systems Security Engineer (ISSE)

Company logo
Parsons Corporation
Multinational technology‑driven engineering and infrastructure firm serving government and private sectors.
Lead DoD RMF security compliance for SCI/SAP systems, managing ATOs and continuous monitoring.
7 days ago ago
$108,700 - $190,200
Expert & Leadership (13+ years), Experienced (8-12 years)
Full Time
Colorado Springs, CO
Onsite
Company Size
19,600 Employees
Service Specialisms
Engineering
Consulting
Construction services
Project Management
Technical Services
Design
Architecture
Turnkey
Sector Specialisms
National Security
Defense
Cybersecurity
Intelligence
Transportation
Environmental Remediation
Urban Development
Geospatial Solutions
Role
What you would be doing
network monitoring
security policies
incident reporting
security audits
tool configuration
compliance management
  • Monitor and analyze network traffic for potential threats
  • Implement security policies and procedures including System Security Plans (SSP), Security Controls Traceability Matrices (SCTM), Risk Assessment Reports (RAR), Continuous Monitoring Plans (ConMon), Security Assessment Reports (SAR), and Plan of Actions and Milestones (POA&M)
  • Report Cyber incidents or vulnerabilities to the ISSM and/or government chain of command
  • Conduct security impact analysis activities and provide to the Information Systems Security Manager (ISSM) on all configuration management changes to the authorization boundaries
  • Play an active role in conducting continuous monitoring activities on Accredited Information Systems (AIS) environment of operation to include developing and updating the system artifacts as well as managing and controlling changes to the system
  • Coordinate and perform security audits and system updates to identify nonstandard events and maintain system and information integrity
  • Assisting in incident response and remediation efforts
  • Design, Configuration, and maintenance of security tools (SIEM, ACAS, PAM, Endpoint agents)
  • Ensuring compliance with DoD cybersecurity standards
  • Support the Government in the enforcement of the design and implementation of trusted relationships among external systems and architectures
  • Utilize Joint Special Access Program Implementation Guide (JSIG) /Risk Management Framework (RMF) to achieve and maintain Authorization to Operate (ATO), Interim Authorization to Test (IATT), and Authority to Connect (ATC) for all existing and new Information Systems (IS) that require accreditation to include on premise and cloud platforms
What you bring
devsecops
ts clearance
nist rmf
siem
aws
security+
  • Experience with DEVOPS / DEVSECOPS operations and requirements
  • Top Secret (TS) security clearance with eligibility for Secret Compartmented Information (SCI)
  • 100% onsite is required in Colorado Springs, CO
  • Strong ability to produce and maintain varied technical documentation, policy, and procedures such as: Ports Protocols and Services Management (PPSM) worksheets, system and network diagrams / descriptions, and Standard Operating Procedures (SOPs)
  • Able to develop current and future security plans, as to lower the threat landscape of the environment
  • Experience in reviewing and implementing secure configuration management techniques
  • Working knowledge of Microsoft Office (Word, PowerPoint, and Excel)
  • Knowledge of cyber tools such as Security Information and Event Management (SIEM) systems, vulnerability detection, scripting languages and/or programming language
  • Knowledge of risk management processes (e.g., methods for assessing and mitigating risk)
  • Must have the ability to work in a dynamic environment and effectively interact with numerous DOD, military/civilian personnel, and industry partners
  • Willingness to submit to a Counterintelligence Polygraph to achieve SAP Security Clearance within 6 months of hire
  • Possess a DoD 8140.03/8570.01 Information Assurance Manager II certification or able to obtain within 6 months of hire: CompTIA Security+, Cisco Certified CyberOps Associate, GIAC Security Essentials (GSEC), SSCP (Systems Security Certified Practitioner)
  • Must have a Bachelors Degree in Computer Science/Engineering/Cybersecurity or other relevant Engineering field from an accredited university with minimum 8 years of experience
  • Experience with Enterprise Mission Assurance Support Service (eMASS) and Xacta
  • Broad knowledge of Information Technology (IT) security principles and methods (e.g., firewalls, demilitarized zones, encryption); computer networking concepts and protocols, and network security methodologies; network security architecture concepts including topology, protocols, components, and principles (e.g., application of defense-in-depth)
  • Practical experience in guiding systems through NIST SP 800-37 RMF steps, from Prepare to Monitor, using CNSSI 1253 to ascertain appropriate Confidentiality, Integrity, and Availability levels, and the NIST SP 800-53 controls associated with each level
  • Have expert knowledge of and hands on experience to configure and manage security tools and systems e.g., Security Technical Implementation Guides (STIGs), Assured Compliance Assessment Solution (ACAS), Host Based Security System (HBSS) / Trellix / Splunk
  • Knowledge of Cloud Computing such as Amazon AWS and Microsoft Azure platforms
Benefits
Information not given or found
Training + Development
Information not given or found
Interview process
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Visa Sponsorship
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Security clearance
  • must obtain a counterintelligence polygraph within 6 months of hire.
  • top secret sci clearance required.
Company
Overview
1944 Founded
Year of Establishment
The company was established in 1944 by Ralph M. Parsons in California.
$6 Billion Annual
Revenue Figure
The firm generates an average of $6 billion in annual revenue.
Free Space Shuttle Move
Notable Achievement
The company successfully transported the Space Shuttle Endeavour at no cost.
  • Over decades it expanded into oil, petrochemical, water and infrastructure projects across the US and globally.
  • It leverages digital tools such as AI platforms, utility data systems, and drone integration alongside traditional design and construction.
  • Parsons completed high‑profile projects like major bridge, tunnel, and transit works.
  • Specializing in transportation, energy, environmental remediation, urban development, industrial, and cybersecurity projects.
  • The firm has delivered hundreds of mega‑projects worldwide, including infrastructure in the Middle East and environmental cleanup contracts.
Culture + Values
  • Safety: We adeptly avoid risk through our high‑value technical and management solutions and a companywide, personal commitment to maintaining a safe and healthy culture and environment in all our offices and on each of our projects.
  • Quality: We’re on a never‑ending quest to improve our processes, services, and products. Our quality management systems ensure ISO 9001 compliance every time…
  • Integrity: Having integrity means that we remain transparent in our practices by openly communicating with each other, our customers, and stakeholders; that we prioritize the quality of every job; and that we do the right thing each time we’re faced with a tough decision.
  • Innovation: Through intensive research and development, partnerships, and rapid prototyping, we confidently provide inventive processes and unique solutions that offer unrivaled value to our customers.
  • Sustainability: We operate in accordance with best practices to deliver solutions while addressing environmental risk and minimizing our carbon footprint.
Environment + Sustainability
50% Reduction
Absolute Scope 1 & 2 GHG Emissions by 2030
Aims to reduce absolute Scope 1 and Scope 2 greenhouse gas emissions by 50% by 2030, referencing a 2019 base year.
100% Renewable
Electricity Sourcing by 2028
A commitment to sourcing 100% of electricity from renewable sources by 2028, having started from 0% in 2019.
90% Reduction
Absolute GHG Emissions by 2045
Long-term goal to reduce absolute Scope 1 and Scope 2 greenhouse gas emissions by 90% by 2045.
Net-Zero Goal
GHG Emissions by 2045
Comprehensive target to achieve net-zero greenhouse gas emissions across the entire value chain by 2045.
  • Purchased renewable energy certificates and reduced market-based Scope 2 emissions in 2023.
  • Achieved significant diversion of shredded paper and repurposed electronics in 2023.
  • Recycled or repurposed hardware units in Middle East offices in 2023.
Inclusion & Diversity
34% increase
Diversity Representation
The organization achieved a significant 34% increase in diversity representation across the enterprise in 2021.
33% increase
Women in Leadership
Women in leadership roles grew by 33% within the organization in 2021, reflecting progress in gender diversity.
50% diverse
Executive Leadership
The executive leadership team was 50% diverse and demonstrated a strong commitment to inclusion in early 2022.
100% score
Human Rights Campaign Index
The organization earned a perfect score of 100 on the Human Rights Campaign Corporate Equality Index for 2023–2024, highlighting its dedication to LGBTQ+ equality.
  • Created a DEI Council in 2017 to unify efforts around diversity and inclusion.
  • Supports Employee Business Resource Groups such as MILVET, HOLA, PRIDE Alliance, BELONG, PWR, SOAR, and FORCE to foster networking, mentorship, and professional development.
  • Recognized as one of Forbes' 2023 Best Employers for Diversity.
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