Senior Security Engineer

Be Challenged and Make a Difference In a world of technology, people make the difference. We believe if we invest in great people, then great things will happen. At AnaVation, we provide unmatched value to our customers and employees through innovative solutions and an engaging culture. Description of Task to be Performed: Come join our growing team and make a difference every day AnaVation is seeking a highly skilled Senior Security Engineer to provide expertise, guidance, recommendations and document security configurations for the implementation of security tools and processes for government networks. The Senior Security Engineer shall include the installation, analysis, and troubleshooting of data/security networks and devices to include network and software system. Key responsibilities include: • Develop technical solutions and new security tools to help mitigate security vulnerability and automate repeatable tasks; • Assist security personnel with responding to incidents across a wide array of technologies, mitigate and contain impacts, coordinate remediation efforts, and summarize recommendations for improvements; • Provide up-to-date reports on security incidents and task process; and • Maintain documentation to support security strategies by outlining the requirements and benefits of specific security tools and/or solutions. This position is on-site in Quantico, VA with hybrid telework possible, and requires a Top Secret clearance and the ability to obtain a CI clearance with a polygraph. Required Qualifications: At least six (6) years of experience as Security Analyst in a corporation, government, or service firm. Experience using and administering SIEM and analytics solutions (Splunk, Elastic Stack (Elasticsearch, Logstash, Kibana - ELK), or similar) required. Experience conducting security assessments, penetration testing and/or ethical hacking, and identifying and mitigating vulnerabilities required. Ability to engineer and deploy critical security analytic services including, but not limited to, IPS/IDS, EDR, and SIEM solutions to secure the enterprise. Industry security certification such as Certified Information Systems Security Professional (CISSP), Certified Information Security Manager (CSIM), Security+, or similar certification is required. Education: Bachelor of Science Degree in Computer Science, Computer Engineering, Cybersecurity or related field of study; or in lieu of education, five additional years of relevant experience. Preferred Qualifications: Architect and operate a hybrid SIEM stack spanning Microsoft Sentinel and Splunk Enterprise across on-prem, Azure, AWS; design ingestion pipelines (DCR/AMA, Splunk UF/HF/HEC), normalization with ASIM/CIM, and cross-workspace/cross-tenant event sharing. Lead security architecture reviews and reference designs aligned to Zero Trust, NIST 800-53/207, CNSSI 1253; deliver threat models, control mappings, and security data flow diagrams for collection networks. Build and maintain detections-as-code: author and version KQL/SPL analytics, watchlists, and entity behavior rules with MITRE ATT&CK coverage. Administer a proactive threat-hunting program using KQL/SPL, Jupyter notebooks (MSTICPy), Sigma conversion, and purple-team ATT&CK emulations; convert hunt findings into resilient analytics and anomaly baselines. Optimize telemetry governance and cost: table/namespace policies, retention tiers/archival, Splunk license & index strategy, Sentinel ingestion caps and data filters, plus egress controls for FOUO/SCI data. Establish incident response operations and SLOs: unify case management (Sentinel Incidents, Splunk ES Notables), evidence handling, post-incident reviews, and executive dashboards/metrics for readiness and dwell time. Provide tiered platform support and enablement: backlog grooming, rule/playbook QA, change control, analyst/admin training, and ATO/RMF continuous monitoring package updates as required. Benefits • Generous cost sharing for medical insurance for the employee and dependents • 100% company paid dental insurance for employees and dependents • 100% company paid long-term and short term disability insurance • 100% company paid vision insurance for employees and dependents • 401k plan with generous match and 100% immediate vesting • Competitive Pay • Generous paid leave and holiday package • Tuition and training reimbursement • Life and AD&D Insurance About AnaVation AnaVation is the leader in solving the most complex technical challenges for collection and processing in the U.S. Federal Intelligence Community. We are a US owned company headquartered in Chantilly, Virginia. We deliver groundbreaking research with advanced software and systems engineering that provides an information advantage to contribute to the mission and operational success of our customers. We offer complex challenges, a top-notch work environment, and a world-class, collaborative team. If you want to grow your career and make a difference while doing it, AnaVation is the perfect fit for you AnaVation is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.