Cybersecurity Engineer II

Lyntris is a defense technology company that connects sensing to action across the connected battlespace. Lyntris brings together the talents of Accelint and Vitesse teams under one mission, with each contributing deep expertise within their domain. Combining differentiated hardware, software and mission expertise, Lyntris helps customers sense threats, make sense of complex conditions and act with greater speed, precision and confidence in contested environments.  

Lyntris supports U.S. and allied defense organizations across every branch — including Navy, Army, Air Force, Space Force and allied partners — spanning strategic, operational and tactical missions and every domain: Space, Air, Land, Sea and Cyber. With more than 200 active defense programs, Lyntris works at every level of the mission, from national command authority to the tactical edge. 

Solutions are designed by operators who understand the mission, engineered for the conditions that degrade or defeat standard systems, and built on an open, modular architecture that integrates into existing programs without requiring them to start over. Lyntris moves faster than the traditional defense cycle — with integrated design, build and test capabilities in-house — and delivers systems that sustain and endure long after initial fielding. 

Job Description

• Cybersecurity Engineer II
• Full time
• Onsite

*This position requires an active U.S. national security clearance. To learn more about the security clearance process please access this link. 

Duties and Responsibilities

• Plan, execute, and present National Security and Cybersecurity assessments, analyses, studies, and technical recommendations.
• Design, engineer, integrate, test, and deploy cybersecurity and network defense solutions across complex DoD environments.
• Configure, integrate, and troubleshoot Splunk Enterprise, Splunk Enterprise Security, SIEM, IDS/IPS, firewalls, vulnerability management tools, and network monitoring solutions.
• Support DoD Computer Network Defense (CND) requirements, boundary defense, vulnerability mitigation, remediation, and risk management activities.
• Integrate cybersecurity solutions across Windows, Linux/Unix, network infrastructure, servers, security appliances, APIs, and third-party platforms.
• Conduct network and security analysis using tools such as Wireshark, Tenable, Splunk, and network taps.
• Leverage automation, scripting, APIs, generative AI, and agentic coding to improve cybersecurity engineering, analysis, testing, and troubleshooting.
• Coordinate and support vendor integration, testing, demonstrations, and fielding activities, including CONUS and OCONUS events.
• Collaborate with government, vendors, engineering teams, and international stakeholders to resolve technical issues and achieve consensus.
• Develop technical documentation, test procedures, assessment reports, briefings, and customer presentations.
• Support cybersecurity activities throughout the acquisition, integration, testing, deployment, and sustainment lifecycle.
• Support Foreign Military Sales (FMS) programs and international customer engagements as required.

Required Qualifications

• Currently holds an active U.S. national security clearance or be able to receive and maintain one. To learn more about the security clearance process please access this link. 
• 5–7+ years of relevant hands-on cybersecurity, network defense, systems eng