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71 staff security engineer jobs at 42 companies in Rockville, MD

1mo
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Staff Security Engineer, Application Security
Chicago or California or Colorado or Florida or Georgia or Illinois or Indiana or Minnesota or Missouri or Montana or New Jersey or New York or North Carolina or Ohio or Oregon or Pennsylvania or South Carolina or Texas or Utah or Vermont or Virginia or Washington or Washington or Wisconsin
$210k-$260k/yr HybridFull Time
NinjaTrader
NinjaTrader: Provides futures brokerage services and a trading software platform.
7+ YOE7+ years in application/product/security engineering; hands-on threat modeling, vulnerability management, secure design, CI/CD integration, automation using Python/Go; experience with cloud-native AWS/GCP environments.
AWS, GCP, Python, Go, SAST, SCA, DAST, CI/CD, AI/LLMs
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3w
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Staff AI Security Engineer
Bellevue or Chicago or New York City or San Francisco or Washington
$161k-$248k/yr HybridFull Time
Okta
OktaNASDAQ: OKTA: Provide secure identity management and authentication for enterprises.
8+ YOE8+ years in security engineering or backend development, expertise in AI threat landscape, strong coding in Python or Go, cloud (AWS/GCP) experience, and leadership/mentorship ability.
Python, Go, LangChain, Strands, Claude Agent SDK, AWS, GCP, OWASP, MITRE ATLAS, NIST AI RMF
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1w
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Entry Level Staff Engineer
Reston, Virginia, United States
$70k-$100k/yr OnsiteFull Time
KTA-Tator
KTA-Tator: Engineering firm providing materials testing and corrosion protection inspection.
0+ YOEBachelor's degree in engineering or science; entry level to 5 years' experience considered. Requires U.S. citizenship, security clearance eligibility, communication skills, Microsoft Office proficiency, and willingness to travel.
Microsoft Office, LabVIEW, CAD, Minitab
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2mo
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Staff Application Security Engineer
Washington, District of Columbia, United States
$150k-$173k/yr OnsiteFull Time
The Nuclear Company
The Nuclear Company: Deploys standardized nuclear reactors for utility-scale energy generation.
4+ YOE4+ years in application/product/software security; experience with secure SDLC tooling (GitHub Advanced Security, CodeQL, Dependabot, SAST/SCA/DAST), familiarity with AWS security, ability to read code (Python, TypeScript, Go, Java, C#, C++), strong communication and offensive-security mindset.
GitHub, GitHub Advanced Security, CodeQL, Dependabot, SAST, SCA, DAST, Palantir Foundry, AWS, IAM, CI/CD, Python, TypeScript, Go, Java, C#, C++, OWASP ASVS, OWASP Top 10, OWASP API Security Top 10, NIST CSF, NIST 800-53, SOC 2, IEC 62443, NERC CIP
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3mo
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Staff, Application Security Engineer - Product Security
Bentonville or Herndon
$110k-$220k/yr OnsiteFull Time
Walmart
WalmartNYSE: WMT: Operates a chain of hypermarkets, discount stores, and grocery stores.
4+ YOEBachelor's degree plus 4 years of application security experience, or 6 years of related experience. Expertise in secure architecture, threat modeling, security testing, SAST, SCA, and compliance controls.
SAST, SCA, OWASP, Web Content Accessibility Guidelines (WCAG), Microsoft Excel
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3mo
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Staff, Application Security Engineer - Product Security
Bentonville or Herndon
$110k-$220k/yr OnsiteFull Time
Walmart
WalmartNYSE: WMT: Multinational retail operating discount stores and supermarkets.
4+ YOE4+ years application security experience with Bachelor's or 6+ years without; expertise in secure architecture, threat modeling, SAST/SCA, OWASP, automation of security validation, and strong communication skills.
SAST, SCA, OWASP
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2mo
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Sr. Staff Security Engineer – AI, VMR, Offensive Security
Bethesda or Palo Alto or Dallas or Seattle
$120k-$260k/yr OnsiteFull Time
GEICO
GEICO: Provides vehicle and property insurance services to consumers.
10+ YOE10+ years in security engineering with deep vulnerability management and offensive security experience; hands-on cloud (AWS/Azure/GCP), programming (Python, Go, Java), NIST CSF, compliance (PCI, SOX, NYDFS), and strong leadership and communication skills.
AWS, Azure, GCP, Python, Go, Java, NIST CSF, SIEM, SOAR, CI/CD, CMDB, AI
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3w
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Offensive Security Agent Engineer
New York City or Seattle or Washington or San Francisco or United States
$347k-$490k/yr RemoteFull Time
OpenAI
OpenAI: Develops artificial intelligence models and generative AI software services.
Staff/principal-level offensive security expertise, domain knowledge in cloud/Kubernetes/web/Linux/macOS, experience building production software and agent systems, strong judgment and communication.
Kubernetes, Linux, macOS
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3mo
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Sr. Staff Site Reliability Engineer-Federal, Security Clearance
Crystal City, Virginia, United States
$140k-$200k/yr OnsiteFull Time
Zscaler
ZscalerNASDAQ: ZS: Provides cloud-native cybersecurity solutions through zero trust architecture.
7+ YOEActive Secret clearance; 7+ years SRE experience in operations and engineering; Linux, network troubleshooting, automation (Ansible, Terraform); Python; AWS ECS/Kubernetes; vulnerability monitoring; virtualization and networking.
Python, Ansible, Terraform, Kubernetes, AWS, Linux, Docker
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3mo
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Staff Engineer Mission Assurance
Linthicum, Maryland, United States
$169k-$254k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
12+ YOEBachelor's degree with 12 years of experience in Mission Assurance or related fields; security clearance required; US citizenship; 10+ years for Master’s with similar focus; experience with QMS, metrics, and risk management.
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5d
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Cyber Systems Security Engineering, Staff
Hanover, Maryland, United States
$136k-$252k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures advanced aerospace, defense, and security systems.
4+ YOEFour years of relevant software integration, testing, system administration, or systems engineering experience; bachelor's degree in electrical engineering, computer science, or related discipline, or equivalent experience.
Linux, Windows, AI
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1mo
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Staff Systems Engineer
Tampa or Warrenton
$110k-$150k/yr HybridFull Time
Auria
Auria: Engineering and software solutions for space and defense missions.
5+ YOEActive U.S. Secret security clearance, 5+ years systems engineering experience, bachelor’s in engineering or equivalent, experience with systems architecture, requirements, CM, and technical leadership.
Model-Based Systems Engineering (MBSE), DoDAF
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14h
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Staff Security & Compliance Engineer, Secure Platforms - Clearance Required
Newport News or Tysons
$121k-$194k/yr OnsiteFull Time
LMI
LMI: Provides management consulting and digital solutions to federal government agencies.
8+ YOEBachelor's degree or equivalent experience, 8+ years in security engineering or related fields, DoD RMF/ATO leadership, NIST controls knowledge, cloud security experience, and active Secret clearance.
AWS, NIST, Risk Management Framework (RMF), Authority to Operate (ATO), DevSecOps, infrastructure as code
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2mo
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Staff Electrical Engineer
El Segundo or Los Angeles or Washington or San Francisco or San Diego or Seattle or London
$150k-$210k/yr OnsiteFull Time
CHAOS Industries
CHAOS Industries: Develops advanced radar and sensing systems for modern defense.
8+ YOEBachelor's in Electrical Engineering with 8+ years experience in power and analog board design for high-reliability aerospace/defense systems; EMI/EMC, verification, production support, and ability to obtain U.S. security clearance.
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3mo
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Design Engineer Staff 2
Tysons, Virginia, United States
$91k-$113k/yr OnsiteFull Time
M.C. Dean
M.C. Dean: Designs and builds cyber-physical systems for mission-critical facilities.
2+ YOEBachelor's in engineering or related field, 2+ years relevant experience, system engineering/IT/physical security experience, strong communication and time management, ability to travel up to 25%.
Microsoft Excel, Microsoft Word, Microsoft PowerPoint
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1mo
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Cyber Security Engineer III
Washington, District of Columbia, United States
$106k-$115k/yr HybridFull Time
American University
American University: Private research university providing undergraduate and graduate education programs.
5+ YOEAdminister and monitor security systems, perform incident response and forensics, develop secure architectures, mentor junior staff. Requires bachelor's degree, 5+ years relevant experience, professional security certs desirable, and scripting (Python, PowerShell).
Python, PowerShell, Unix/Linux, Windows, macOS, TCP/IP, LDAP, 802.1x, SNMP, VPN, virtualization, firewalls, intrusion detection/prevention systems, SSL, TLS, IPsec, CMMI, ITIL
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1mo
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Staff AppSec Engineer
Washington or United States
$210k-$230k/yr RemoteFull Time
Upside
Upside: Personalized cashback rewards platform for everyday brick-and-mortar purchases.
6+ YOE6+ years in application/product security, hands-on Python code review, vulnerability management, deep AWS security experience (Lambda, Control Tower), experience integrating AI tools, strong communication; Bachelor's preferred.
GitHub Advanced Security, GitHub Actions, GitHub Copilot, Python, Terraform, AWS, AWS Lambda, DynamoDB, S3, SNS, SQS, IAM, VPCs, AWS Control Tower, ChatGPT, Snowflake, SQL
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2mo
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Staff DevOps Engineer (Linux)
Palo Alto or Atlanta or Washington
$195k-$220k/yr HybridFull Time
Quantifind
Quantifind: AI-driven platform for financial risk and fraud detection.
8+ YOE8+ years experience; strong Python or Go; Linux/Ubuntu administration; Docker, Kubernetes, Ansible; security, fleet management, monitoring/observability, release engineering, and Airflow experience.
Python, Go, Linux, Ubuntu, Docker, Kubernetes, Ansible, git, Hadoop, Nagios, PostgreSQL, Jenkins, Maven, Apache Airflow, Ganeti, Scala, NodeJS, React, AWS
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1w
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Staff Systems Solutions Engineer
Fort Meade, Maryland, United States
$60k-$80k/yr OnsiteFull Time
Diné Development Corporation
Diné Development Corporation: Provides professional IT, environmental, and engineering services to government.
5+ YOEFive years of experience, a bachelor's degree in engineering, information technology, or a related discipline, active Secret clearance, IAT Level II certification, U.S. citizenship, and enterprise IT experience.
ServiceNow, Security+, Network+
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2w
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Senior Information Systems Security Engineer (ISSE)
Annapolis Junction, Maryland, United States
$150k-$210k/yr OnsiteFull Time
Amatriot Group
Amatriot Group: Provides IT consulting and mission-critical technology support services.
Design and implement enterprise security architecture, perform security engineering across SDLC, manage vulnerability programs, support incident response, and mentor junior staff. Active TS/SCI and DoD IAT Level III required.
NIST RMF, DoD STIGs, CIS benchmarks, Tenable Nessus, ACAS, Qualys, Splunk Enterprise, PowerShell, Bash, Python, Trellix ePO On-Prem, CyberArk, VMware vSphere, GitLab, Microsoft Windows Server, Red Hat Enterprise Linux, Ubuntu Linux, Ansible, AWS, Azure, Kubernetes
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