Elastic SIEM Platform Engineer

Position Overview

The Elastic Cyber Defense Platform Engineer will support the migration from Splunk to an enterprise Elastic Security platform and the continued operation and improvement of that environment. The engineer will help design, deploy, secure, integrate, and sustain Elastic capabilities across three network enclaves while preserving continuous cyber defense operations. This hands‑on engineering role requires close coordination with customer stakeholders, cybersecurity analysts, infrastructure teams, and program leadership.

• Design, deploy, configure, upgrade, and sustain self‑managed Elastic Stack environments, including Elasticsearch, Kibana, Fleet, Elastic Agents, Beats, Logstash, and related integrations.
• Support the phased migration of priority data sources, searches, dashboards, detections, alerts, and analyst workflows from Splunk to Elastic Security.
• Build and troubleshoot ingest pipelines, parsers, index templates, data streams, mappings, and Index Lifecycle Management policies for high‑volume security telemetry.
• Monitor and tune cluster health, capacity, performance, availability, shard allocation, retention, snapshots, and recovery processes.
• Implement secure access and data protection controls, including TLS or mTLS, certificate management, CAC or enterprise identity integration, role‑based access control, Kibana spaces, and data segregation.
• Develop and refine dashboards, detection rules, alerting, and threat‑hunting content aligned to mission use cases and MITRE ATT&CK.
• Integrate Elastic with endpoint, network, vulnerability, identity, ticketing, and security automation technologies used by the Agency CSSP.
• Support deployment and troubleshooting in disconnected, air‑gapped, and classified environments, including offline repositories and controlled software transfer processes.
• Participate in customer workshops, testing, dual‑run validation, cutover, and post‑migration optimization at Fort Belvoir and other approved locations.
• Produce architecture, configuration, test, operating, troubleshooting, and knowledge‑transfer documentation; train government and contractor personnel as required.

• Five or more years of experience in cybersecurity, systems engineering, network engineering, or a closely related technical field.
• Two or more years of hands‑on experience engineering or operating Elastic Stack environments, or equivalent experience demonstrating the ability to perform the responsibilities of this role.
• Practical experience with Elasticsearch cluster architecture, Kibana, Fleet, Elastic Agents, ingest pipelines, data lifecycle management, monitoring, and troubleshooting.
• Experience securing enterprise platforms with TLS, certificates, identity integration, role‑based access, and logical data separation.
• Linux administration experience, preferably Red Hat Enterprise Linux, and working knowledge of platform tuning such as vm._count, ulimits, memory, storage, and swap settings.
• Experience supporting DoD, federal, classified, or otherwise highly regulated environments and applying RMF, STIG, and NIST security controls.
• Experience supporting DoD CSSP or comparable SOC operations across multiple network enclaves.
• Ability to communicate technical issues clearly, work directly with customers, document solutions, and operate effectively during time‑sensitive migration and cutover activities.
• Active Secret clearance and ability to maintain required access. Candidates supporting JWICS activities must be eligible for the applicable TS/SCI access.
• Ability to travel regularly to Fort Belvoir, Virginia, including on short notice when required for customer access, classified work, testing, or operational milestones.