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2,430 senior security engineer jobs at 695 companies in Frederick, MD

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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
2mo
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Senior Security Engineer
Bethesda, Maryland, United States
OnsiteFull Time
Futrend Technology
Futrend Technology: Provider of IT solutions and consulting for federal agencies.
5+ YOE5+ years information security experience, including 3+ years cloud security; BA/BS in CS/IT or related field (or equivalent experience); strong communication and cross‑functional collaboration.
Tenable Security Center, Nessus, Splunk, Python, AWS, Azure
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3mo
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Senior Security Engineer
Washington, District of Columbia, United States
HybridFull Time
Ardent
Ardent: Provides geospatial and digital transformation services to federal agencies.
4+ YOE4+ years cybersecurity engineering; 2+ years with SIEM (prefer Microsoft Sentinel); Bachelor's in cybersecurity/IT or equivalent; US citizenship; strong KQL and log management skills; vulnerability management and patching experience.
Microsoft Sentinel, KQL, Log Ingestion, Security Information and Event Management, Threat Detection, Vulnerability Management
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2mo
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Senior Security Engineer
McLean, Virginia, United States
OnsiteFull Time
Range
Range: AI-powered platform for wealth management and financial planning.
6+ YOE6+ years security engineering; offensive security; cloud AWS; tooling for security testing (Python/Go); web app vulnerability analysis; threat modeling; translate findings to engineering.
Python, Go, AWS, ECS, EC2, RDS, S3, IAM
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2mo
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Senior Microsoft Security Engineer
Adelphi, Maryland, United States
$116k-$131k/yr HybridFull Time
University of Maryland Global Campus
University of Maryland Global Campus: Online higher education for adult and military learners.
10+ YOESenior security engineer with Microsoft Defender ATP, Azure Security Center, information protection, risk assessments, and 10+ years IT security experience.
Microsoft Defender ATP, Azure Security Center, Microsoft Information Protection, Splunk, Cisco ASA, Palo Alto, firewalls, intrusion detection systems, patch management
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2mo
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Email Security Engineer, Senior
Fort Meade, Maryland, United States
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
Senior email security engineer with F5 LTM, network design, and DoD experience.
F5 LTM, tmsh, bash, imish, ZebOS, Azure, BGP, IPv6, Cisco, VRF, NIPR, BIND, RedHat, SMTP, Security+, IAT
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3mo
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Senior Security Engineer, Detection and Response
Austin or San Francisco or Seattle or Boston or Washington
$182k-$202k/yr RemoteFull Time
HackerOne
HackerOne: Connecting organizations with ethical hackers to find security vulnerabilities.
5+ YOE5+ years in detection and response or security engineering; strong software fundamentals; experience with cloud (AWS); experience with log analysis and endpoint detection tools.
Python, Go, Ruby, CloudTrail, GuardDuty, VPC flow logs, Datadog, Splunk, ELK, SentinelOne, CrowdStrike
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1mo
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Senior Security Engineer
Austin or Bochum or Dubai or Geneva or London or Singapore or Tokyo or Washington
OnsiteFull Time
Sonar
Sonar: Provides automated tools for code quality and security analysis.
Senior-level security engineering experience with cloud (AWS), application security, vulnerability management, DLP, scripting/automation (Python or Bash), and experience assessing SaaS/security tools (Wiz, CrowdStrike). Strong communication skills.
AWS, Python, Bash, Wiz, CrowdStrike, Google Workspace, GitHub Copilot, Claude Code, Codex, Cursor, Gemini, Devin, SonarQube, SonarQube Foundation Agent, SonarSweep, Sonar Context Augmentation, DLP
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3mo
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Senior Cloud Security Engineer
McLean, Virginia, United States
OnsiteFull Time
Steampunk
Steampunk: Design-led federal technology consulting and innovation services firm.
7+ YOESenior cloud security engineer with 8-10+ years in cloud, cybersecurity, and DevOps; strong infrastructure as code, zero-trust, IAM, data protection; experience with clouds and automation; US government security clearance preferred.
AWS, Azure, GCP, Git, GitHub, GitLab, Bitbucket, Bash, PowerShell, Python, Groovy, Ruby, Pivotal, Chef, Terraform, CloudFormation, Ansible
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2mo
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Senior Network Security Engineer
Columbia, Maryland, United States
$121k-$266k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
8+ YOEActive TS/SCI with Polygraph; 8+ years network security engineering; DoD 8570 IAT II; 3 of PCNSA, SNSA, SNSP, Symantec ProxySG, Cisco CCNA or higher; Bachelor’s degree or 5 years alternative experience.
LAN/WAN, Network design, Security testing
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2w
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Senior Cloud & Security Engineer
Ashburn or United States
$130k-$170k/yr RemoteFull Time
Unacast
Unacast: Provides human mobility analytics and global location intelligence solutions.
5+ YOE5+ years cloud/security engineering with AWS, Java/Spring experience, strong SQL, JSON/GeoJSON processing, AWS security tooling, incident response, and excellent communication.
Java, Java Spring Framework, SQL, Snowflake SQL, Amazon Web Services (AWS), AWS Elastic Container Service, AWS X-Ray, JSON, GeoJSON, Scala, Python, Google Workspace
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2mo
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Senior Security Engineer
Washington, District of Columbia, United States
$160k-$190k/yr OnsiteFull Time
Evolver
Evolver: Provides cybersecurity and IT solutions for government and enterprise.
6+ YOEBachelor's degree and CISSP with ISSEP, 6+ years technical experience or 4+ years in IT solutions at senior management; US citizenship required.
Splunk, Elastic, Cortex XSOAR, CrowdStrike, Microsoft Defender, AWS GovCloud, Azure Government, Kubernetes, Docker, RMF, NIST, ITIL
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2mo
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Security Engineer – Lead (R-00161)
Arlington or Washington or United States
OnsiteFull Time
True Zero Technologies: A veteran-owned small business delivering security and technology services.
Senior security engineer with RMF/FISMA experience, capable of translating security requirements into technical designs and leading security engineering in enterprise and classified environments.
Splunk Enterprise Security, MITRE ATT&CK, RMF, FISMA
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2mo
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Senior Network Security Engineer (SDN / Multi-Enclave)
College Park, Maryland, United States
$146k-$234k/yr OnsiteFull Time
Peraton
Peraton: Provides advanced technology and mission support for government agencies.
12+ YOE12+ years of network security experience in DoD/IC environments; BS in CS/Cybersecurity Engineering/System/Network Engineering; CCNA with progress toward CCNP; active TS/SCI with polygraph.
Cisco IOS, Juniper, FORE, Cisco routers/switches, VPN, IDS/IPS, SDN, TACACS, AAA, PoP/ConOps
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2mo
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Security Engineer
Bellevue or Menlo Park or Washington or New York
$271k-$347k/yr OnsiteFull Time
Meta
MetaNASDAQ: META: Develops social networking platforms and virtual reality technologies.
15+ YOEB.S. in CS or related; 15+ yrs security risk management; 15+ yrs cross-company engineering; system design, threat modeling; engineered controls; security principles; threat knowledge; distributed systems; strong communication.
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4w
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Senior Platform Engineer - Security
Washington or Sarasota or Miami or New York City or Toronto or Longboat Key
$165k-$205k/yr OnsiteFull Time
Rumble
RumbleNASDAQ: RUM: Online video sharing platform and cloud services provider.
Strong Linux systems engineering and security hardening experience; vulnerability management, OpenStack/Ceph/Kubernetes familiarity; automation with Ansible/Terraform and scripting in Bash or Python; audit and compliance experience.
CIS Benchmarks, STIGs, OpenStack, Nova, Neutron, Keystone, Cinder, Ceph, Kubernetes, CIS Kubernetes Benchmarks, Ansible, Terraform, Bash, Python, SELinux, AppArmor, auditd, PAM, SIEM, EDR, Elastic, Splunk, Wazuh, Falco, Vault, LUKS/dm-crypt, CVSS, ISO 27001, SOC 2, PCI DSS, FedRAMP, Pod Security Standards
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1mo
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Senior Security Engineer
Washington, District Of Columbia, United States
$145k-$165k/yr OnsiteFull Time
ECS
ECSNYSE: ASGN: Provides advanced technology and engineering services to government agencies.
8+ YOEBachelor's degree, active or eligible Public Trust clearance, 8+ years security engineering experience, multiple security certifications, knowledge of STIGs, SDLC and systems engineering, strong written and verbal communication.
Security Technical Implementation Guides (STIGs), Waterfall Model, Spiral Model
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1mo
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Senior Security Engineer
Washington or United States
OnsiteFull Time
Zermount
Zermount: Provider of cybersecurity and IT solutions to government agencies.
5+ YOEHands-on security engineer to design and implement cloud and network security (AWS required), perform RMF-based reviews, develop IaC blueprints, script cloud assessments, and research emerging security capabilities. CISSP required; 5+ years experience.
RMF, CSF, FISMA, Fedramp, SIEM, IaC, CICD, DevSecOps, AWS IAM, KMS, S3, RDS, SNS, SQS, Organization, Guard Duty, Security Hub, Detective, Config, CloudTrail, CloudWatch, Lambda, Microsoft Azure E3/E5, Active Directory, Blob, Microsoft Azure Security Center, Microsoft Azure Key Vault, SSE, Microsoft Azure Monitor, Microsoft Log Analytics, Policy, ZTNA, SASE, ICAM, OKTA, CWPP, SOC Operations, Vulnerability Threat Management, IDS, IPS, WAF, CDN, DDOS, LAN, WAN, Hypervisor, Container security, Serverless, Microservices, AI/ML
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2mo
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Senior Physical Security Engineer
Arlington, Virginia, United States
OnsiteFull Time
M.C. Dean
M.C. Dean: Design-build and systems integration for complex, mission-critical infrastructure.
5+ YOEActive Secret clearance; Bachelor's or Master's with 5+ or 7+ years in security systems; VMS/CCTV, electrical security, system architecture; travel; IAT II certification.
VMS, CCTV, Bosch, Milestone, Genetec, ACS, PSIM, PIDS, IDS, SOP, SOW
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2w
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Senior AI Security Engineer
McLean, Virginia, United States
OnsiteFull Time
Appian
AppianNASDAQ: APPN: Provides a low-code platform for enterprise-grade process automation.
4+ YOE4+ years software engineering experience with LLMs, Python, cloud AI deployment, and security-first engineering; experience with multi-agent systems, vector DBs, and interfacing with security platforms.
Python, LangChain, LlamaIndex, AutoGen, CrewAI, Semantic Kernel, Pinecone, Qdrant, Milvus, Weaviate, Splunk, CrowdStrike, Microsoft Sentinel, Palo Alto XSOAR, Kubernetes, EKS, AKS, AWS, Google Cloud, Azure, Llama 3, Mistral, LoRA, QLoRA
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1mo
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AI and ML Security Engineer, Senior
Fort Meade, Maryland, United States
$99k-$225k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
3+ YOESenior AI/ML security engineer with TS/SCI with poly clearance; 3+ years AI/ML experience (or 6+ years in lieu of degree); BS preferred.
Python, Linux, Docker, Docker Compose, LLMs, AI/ML evaluation, red-team tooling
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