Information Systems Security Engineer Jobs

New

Senior Information Security Engineer

Serve as a technical leader in our Security team reporting to our Information Se...

Location

United States , Boston

Salary:

150000.00 - 190000.00 USD / Year

Whoop

Expiration Date

Until further notice

Requirements

Bachelor’s degree in Computer Science, Information Security, or a related technical field and/or advanced certifications (CISSP, CISM, AWS Security Specialty, SANS, etc.)
8+ years of hands-on experience in Information Security, IT Security, or a related role, including at least 2 years in a senior or lead capacity
Proven track record implementing and managing advanced security technologies (e.g., CASB, CNAPP, CSPM, SIEM, SOAR, DLP, SWG)
Experience securing AI/ML systems or APIs, including governance of third-party AI integrations and organizational use of AI tools
Strong understanding of modern cloud security architecture (AWS, Azure, GCP) and experience performing threat modeling and risk assessments on cloud-based systems
Hands-on experience with application security tooling (SAST, SCA, DAST) and embedding secure development practices
Demonstrated leadership in security incident response, investigations, and root cause analysis
Effective communicator with the ability to influence stakeholders and explain security concepts to technical and non-technical audiences
Strong project management skills and the ability to drive initiatives to completion in a fast-paced environment
Experience mentoring engineers and setting operational standards

Job Responsibility

Implement and enhance security controls by leading the deployment, integration, and tuning of solutions such as CNAPP, SIEM, CASB, EDR, DLP, and MDM to maximize effectiveness
Support security design decisions by providing subject matter expertise on cloud and SaaS security best practices while influencing architecture led by the Security Architect role
Lead incident response and investigations by guiding containment, remediation, root cause analysis, and post-incident improvements
Strengthen application security by overseeing secure development practices and managing SAST, SCA, and DAST tooling
Advance identity and access management by supporting IAM policy enforcement, SSO, MFA, SCIM, RBAC, and user lifecycle governance
Secure AI systems and integrations by assessing and protecting embedded APIs and organizational AI tool usage to ensure resilience, privacy, and compliance
Collaborate cross-functionally by working with Engineering, IT, and GRC teams to embed security into systems and workflows
Mentor and influence by providing technical guidance, reviewing work, and promoting security-first thinking across the organization
Stay ahead of threats and regulations by tracking emerging risks, technologies, and compliance requirements to inform forward-looking strategies
Participate in and help improve the on-call rotation by providing guidance, escalation support, and driving improvements in response processes

What we offer

competitive base salaries
meaningful equity
generous equity package

Fulltime

New

Information Systems Security Engineer

STR has an exciting opportunity for a well-rounded cybersecurity professional to...

Location

United States , Woburn

Salary:

136000.00 - 170000.00 USD / Year

STR

Expiration Date

Until further notice

Requirements

Active Top Secret security clearance with the ability to obtain SAP and SCI access (U.S. citizenship required)
3-5 years of technical (hands-on) experience in Information Assurance/Cyber Engineering, including requirements development and implementation
DoD 8570 IAM Level III certification (CISA, CISM, CISSP, etc.) or the ability to obtain within 6 months of hire
Knowledge of the DCSA Authorization and Assessment Process Manual (DAAPM) and the Joint Special Access Implementation Guide (JSIG)
Configuration, certification, and auditing/analysis of Windows/Linux operating systems and system virtualization in peer-to-peer, LAN & WAN networks
Managing and implementing DISA STIGs and benchmarks in various operating systems (Windows, RHEL, Ubuntu)
Using IA vulnerability/compliance scanning tools (e.g., NMap, ACAS, Nessus, Security Content Automation Protocol (SCAP))
Maintaining/managing Security Incident and Event Management (SIEM) and centralized auditing tools (e.g., Splunk, PowerStrux)
Familiarity with Microsoft Deployment Toolkit (MDT)
Supporting the hardening of new builds of Information Systems (IS) and ensuring full functionality before deployment

Job Responsibility

Conduct both vulnerability and compliance scans of Information Systems
Support the development of Risk Management Framework (RMF) documentation and control validation testing for Authority to Operate (ATO) accreditations
Develop cybersecurity requirements, design, and architecture for current and emerging program needs
Implement Information Assurance and Information Security protections and requirements in program development and execution environments
Apply required security controls to networking devices, databases, operating systems, and hardware/software components
Assist ISSMs and ISSOs in monitoring and resolving Plan of Action and Milestones (POA&M) to mitigate system vulnerabilities
Conduct reviews and technical inspections to identify and mitigate potential security weaknesses, ensuring all security features are implemented and functional
Support the completion of Continuous Monitoring requirements in accordance with RMF and NIST SP800-53 standards
Perform other tasks as assigned by the manager

Fulltime

New

Senior Defensive Security Engineer – Embedded Systems

Silvus is seeking a Senior Defensive Security Engineer – Embedded Systems who wi...

Location

United States , Los Angeles

Salary:

140000.00 - 200000.00 USD / Year

Silvus Technologies (International)

Expiration Date

Until further notice

Requirements

Bachelor’s degree in Cybersecurity, Computer Science, Information Technology, or related field (e.g., Mathematics, Computer Engineering)
Minimum 5 years in cybersecurity, with at least 2 years in defensive security roles focused on Linux-based systems
Expertise in Linux network security, secure coding, or embedded systems security
Coding/scripting in C/C++, Python, Bash, or assembly for Linux environments
Familiarity with Linux security tools like Auditd, Lynis, or vulnerability scanners
Security Clearance: Active U.S. Government SECRET clearance or the ability to obtain one within 12 months of hire
Must be a U.S. Person (U.S. Citizen, or U.S. Permanent Resident) due to clients under U.S. federal contracts

Job Responsibility

Design and implement Linux-based security architectures for embedded systems, focusing on secure boot, and kernel hardening
Develop and enforce Linux security features, including iptables, netfilter, and auditd for intrusion detection and prevention
Conduct security assessments and audits of Linux-based embedded systems to identify and mitigate vulnerabilities
Integrate Linux security best practices into the development lifecycle (DevSecOps), emphasizing secure coding and configuration management
Manage vulnerabilities in Linux-based embedded systems, including timely patching and kernel updates
Train teams on Linux security practices, including privilege management, file system permissions, and container security
Participate in incident response planning and execution for Linux-based embedded systems
Implement Linux-native encryption and authentication mechanisms (e.g., dm-crypt, OpenSSL, PAM) for secure communications

Fulltime

New

Principal System Security Engineer

Owl’s Principal System Security Engineer ensures our mission-critical security p...

Location

United States , Columbia

Salary:

Not provided

Owl Cyber Defense

Expiration Date

Until further notice

Requirements

Bachelor’s Degree in a technical discipline (Master’s degree preferred)
Twelve+ years of experience in security and vulnerability analysis
Five+ years in a security leadership position
Cross-Domain Solutions (CDS) Familiarity
Experience with secure software development principles
Strong communication and collaboration skills across product teams
Excellent problem-solving and critical-thinking skills
Understanding of Agile/Scrum methodologies and tools (Git, JIRA)
Ability to prioritize tasks effectively
Experience in hiring, scaling teams, and managing remote engineering teams

Job Responsibility

Work as a cross functional technical engineer to provide system engineering, cyber security, solution architecture and product integration across various internal teams
Lead system and security engineering and integration reviews of new features and capabilities in current product portfolio and new products
Conduct technical deep dive TEMs and security architectural reviews
Work to understand the operational, functional and security requirements as they relate to mission and deployment environments
Work with solution architects and sales engineers to ensure system designs, implementations, configurations and integrations into operational environments are compliant from a security perspective
Assist in design engineering and development efforts to implement Raise the Bar (RTB) compliance
Facilitate products through the Cross Domain Solutions (CDS) processes
Support the development of related technical and information/ decision briefs, as well as patching and upgrades briefings
Collaborate with software development and network operations teams to integrate secure data transfer practices into the Software Development Lifecyle
Work with SW developers to ensure RTB compliance

New

Information Security Engineer

Responsible for maintaining the integrity and security of enterprise-wide cyber ...

Location

United States , Reston

Salary:

Not provided

LT Consulting

Expiration Date

Until further notice

Requirements

Active TS/SCI clearance
Bachelor’s degree in Computer Science, Engineering or a related field

Job Responsibility

Maintaining the integrity and security of enterprise-wide cyber systems and networks
Supporting cyber security initiatives through both predictive and reactive analysis, articulating emerging trends to leadership and staff
Coordinating resources during enterprise incident response efforts, driving incidents to timely and complete resolution
Employing advanced forensic tools and techniques for attack reconstruction, including dead system analysis and volatile data collection and analysis
Supporting internal HR/Legal/Ethics investigations as forensic subject matter expert
Performing network traffic analysis utilizing raw packet data, net flow, IDS, and custom sensor output as it pertains to the cyber security of communications networks
Reviewing threat data from various sources and develops custom signatures for Open Source IDS or other custom detection capabilities
Correlating actionable security events from various sources including Security Information Management System (SIMS) data and develops unique correlation techniques
Utilizing understanding of attack signatures, tactics, techniques and procedures associated with advanced threats
Developing analytical products fusing enterprise and all-source intelligence

New

Information System Security Engineer

Leave things better than you found them - share and share alike, let others bene...

Location

United States , Annapolis Junction

Salary:

150000.00 - 225000.00 USD / Year

LufCo

Expiration Date

Until further notice

Requirements

B.S. degree in Computer Science or other related field
4 years of additional experience may be substituted for a bachelor’s degree
CISSP Certification
Fourteen (14) years’ experience is required
Strong troubleshooting skills and ability to collaborate with others to determine root cause
Strong communication and requirements solicitation skills
TS/SCI with polygraph, U.S. citizen

Job Responsibility

Security engineering representative on engineering teams for the design, development, implementation, and integration of secure networking, computing, and enclave environments
Hands on application and knowledge of IA policy, procedure, and workforce structure to design, develop, and implement secure networking, computing, and enclave environments
Support the Government in the enforcement of the design and implementation of trusted relationships among external systems and architectures
Security planning, assessment, risk analysis, and risk management
Identify overall security requirements for the proper handling of Government data
Interact with the customer and other project team members

What we offer

Competitive salary
generous PTO
health/dental/vision insurance
401K matching
tuition reimbursement
Paid Time Off
401K Contribution and Employer Match Contributions
Medical, Dental, and Vision Coverage
Employee Assistance Program

Fulltime

New

Senior Information System Security Officer

We are seeking a highly skilled and mission-driven Senior Information Systems Se...

Location

United States , Clarksburg

Salary:

Not provided

Innovative Management & Technology Services

Expiration Date

Until further notice

Requirements

Bachelor’s degree in Cybersecurity, Information Systems, Computer Science, or a related field (or equivalent combination of education and experience)
8+ years of progressive experience in information systems security, with at least 3 years in a senior-level or lead ISSO role supporting federal or state government agencies
Strong working knowledge of: NIST 800-53, RMF, FISMA, OWASP Top 10, and SANS Institute standards
SAFe Agile environments and integrating security in Agile workflows
Networking, Linux/Windows system administration, and secure software development practices
Cloud platforms (AWS, Azure, GCP) and related security tools (e.g., AWS Security Hub, Azure Defender)
Experience in managing security documentation, participating in audits, and working with compliance frameworks
Relevant certifications such as CISSP, CISM, Security+, CEH, or equivalent
Active Top Secret clearance is required
U.S. Citizenship is required

Job Responsibility

Lead the implementation and maintenance of system security controls in compliance with federal cybersecurity frameworks, including NIST SP 800-53, RMF, OWASP, DISA STIGs, and Common Criteria
Oversee the full lifecycle of Authorization to Operate (ATO) processes, including preparation of System Security Plans (SSPs), Security Assessment Reports (SARs), POA&Ms, and risk assessments
Serve as a senior security advisor and liaison to system owners, developers, DevOps engineers, and government stakeholders
Participate in technical reviews of system architecture and ensure secure design of virtualized and software-defined infrastructures
Support integration of security controls into CI/CD pipelines using DevSecOps principles and tools (e.g., Jenkins, GitLab CI, SonarQube, Snyk)
Provide security engineering support for modern cloud environments, including AWS, Azure, or Google Cloud Platform, and assess cloud-native security capabilities
Conduct vulnerability assessments, interpret scan results from tools like Tenable, Nessus, Splunk, or Qualys, and lead remediation efforts
Mentor junior ISSOs and analysts on security policies, best practices, and tool usage
Ensure continuous monitoring activities are aligned with organizational risk tolerance and compliance goals

What we offer

competitive compensation
excellent benefits including tuition reimbursement and employer-contributed 401K
referral bonuses

Fulltime

New

Information Systems Security Engineer

Hoplite Solutions is seeking Information Systems Security Engineers (ISSE) to jo...

Location

United States , Fort Meade

Salary:

185000.00 - 225000.00 USD / Year

Hoplite Solutions

Expiration Date

Until further notice

Requirements

Active TS/SCI with Polygraph
Bachelor’s degree in Computer Science, Information Assurance, Information Security System Engineering, or related discipline from an accredited college or university is required
12 years' experience as an ISSE on programs and contracts of similar scope, type, and complexity to include recent experience within the 5 years with Cybersecurity principles and technology, including access/control, authorization, identification and authentication, PKI, network and enterprise security architecture
DoD 8570 compliance
Both Information Systems Security Engineering Professional (ISSEP) and CISSP Certifications are required

Job Responsibility

Perform, or review, technical security assessments of computing environments to identify points of vulnerability, non-compliance with established Cybersecurity standards and regulations, and recommend mitigation strategies
Validate and verifies system security requirements definitions and analysis and establishes system security designs
Design, develop, implement and/or integrate Cybersecurity and security systems and system components including those for networking, computing, and enclave environments to include those with multiple enclaves and with differing data protection/classification requirements
Review certification and accreditation (C&A) documentation, provide feedback on completeness and compliance of its content
Support security authorization activities in compliance with CSS Information System Certification and Accreditation Process (NISCAP) and DoD Risk Management Framework (RMF), the NIST Risk Management Framework (RMF) process, and prescribed CSS business processes for security engineering
Participate as the primary security engineering representative on engineering teams for the design, development, implementation, evaluation, and/or integration of secure networking, computing, and enclave environments
Apply knowledge of Cybersecurity policy, procedures, and workforce structure to design, develop, and implement secure networking, computing, and enclave environments
Interact with the customer and other project team members
Participate as the primary security engineering representative on engineering teams for the design, development, implementation, evaluation, and/or integration of Cybersecurity architectures, systems, or system components
Support the Government in the enforcement of the design and implementation of trusted relationships among external systems and architectures

What we offer

7% employer 401k contribution
fully paid healthcare for our employees
outstanding training benefits
company funded life insurance and short-term disability insurance

Fulltime

Information Systems Security Engineer

Hoplite Solutions

Location:
United States, Tysons

Category:
IT - Administration

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
December 09, 2025

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