Agile Defense — Security Engineer jobs
19 open roles
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Security Engineers protect software systems at every layer — from application security (AppSec) and cloud infrastructure to threat detection and incident response. As AI systems move to production and attack surfaces expand, security engineering has become one of the most in-demand and fastest-growing engineering disciplines. This board aggregates open Security and AppSec engineering roles daily from public ATS feeds, linked to the original posting.
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Cybersecurity Team LeadAgile Defense · Springfield, VA (onsite)On-site$170–180kNew 2026-11-12
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Cyber Security Specialist – Intermediate (Cybersecurity)Agile Defense · Fort Huachuca, AZ (onsite)On-site$80–93kNew 2026-11-12
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Cyber Security Specialist – Associate (Cybersecurity)Agile Defense · Fort Huachuca, AZ (onsite)On-site$80–93kNew 2026-11-12
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Baseline Security EngineerAgile Defense · RemoteRemote$135–150k 2026-11-05
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Vulnerability ResearcherAgile Defense · Fort Meade, MD (onsite)On-site$155–175k 2026-10-27
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Senior Vulnerability Researcher & Reverse EngineerAgile Defense · Fort Meade, MD (onsite)On-site$155–175k 2026-10-27
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Cyber Systems Administrator – Control Systems CybersecurityAgile Defense · Columbus, OH (onsite)On-site 2026-10-13
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Cybersecurity Engineer / RMF SpecialistAgile Defense · Columbus, OH (onsite)On-site 2026-10-13
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Information System Security Engineer (ISSE) Senior - Top Secret Clearance RequiredAgile Defense · Washington, D.C. (onsite)On-site$140–155k 2026-10-06
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Cleared IT, Cybersecurity, Engineering, Data, and Program Support ProfessionalsAgile Defense · Quantico, VA (onsite)On-site 2026-10-06
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Senior Application Security EngineerAgile Defense · RemoteRemote$140–145k 2026-09-17
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Network Security EngineerAgile Defense · Suitland, MD (onsite)On-site$100–115k 2026-09-15
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Vulnerability Assessment (VA) Team Lead (CBP)Agile Defense · Reston, VA (hybrid)Hybrid$155–175k 2026-08-19
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Information System Security Officers (ISSO), Senior Security Engineers & Security Engineering Leads (CBP)Agile Defense · Ashburn, VA (hybrid)Hybrid$140–190k 2026-08-18
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Senior Security Architect-HYBRID Onsite 3 days per week in D.C.Agile Defense · Washington, D.C. (hybrid)Hybrid$160–180kVisa sponsorship 2026-06-12
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Security AnalystAgile Defense · China Lake, CA (onsite)On-site$85–110k 2026-04-29
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Security Engineering LeadAgile Defense · Reston, VA (hybrid)Hybrid$165–201k 2026-02-19
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Information Systems Security Engineer - SMEAgile Defense · Washington, D.C. (onsite)On-site$175–190k 2026-02-09
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Security EngineerAgile Defense · Springfield, VA (hybrid)Hybrid$120–140k 2025-11-17
Security Engineer — FAQ
- What is a Security Engineer?
- A Security Engineer designs, builds, and operates defenses for software systems — covering application security (code review, vulnerability assessment), cloud security (IAM, network controls, CSPM), and detection and response (SIEM, threat hunting). The role spans preventative engineering and reactive incident work.
- AppSec vs. Cloud Security vs. Security Engineer — what's the difference?
- Application Security (AppSec) engineers focus on the software development lifecycle — finding and fixing vulnerabilities in code and APIs. Cloud Security engineers focus on infrastructure controls in AWS/GCP/Azure. Security Engineers often span both, plus detection engineering and incident response.
- What skills do Security Engineers need?
- Strong software engineering fundamentals plus security-specific knowledge: OWASP Top 10, threat modeling, cloud IAM, network security, cryptography, and tooling (Burp Suite, Semgrep, Falco, etc.). Programming in Python or Go is common. Certifications (OSCP, AWS Security Specialty) are a plus but rarely a hard requirement at strong engineering shops.