Jobs at Sigma Defense Systems LLC

Develop, test, and maintain desktop and web applications, backend services, and hardware-integrated systems using C++, Python, JavaScript/TypeScript. Implement networking (TCP/IP, UDP, WebSockets, gRPC), REST APIs, databases, and Protocol Buffers. Support system integration, field testing, customer demos, documentation, and troubleshooting within a small engineering team.

Lead and manage BMD program training configuration, operation, maintenance, and management for TTGP. Provide BMD SME support, develop scenarios/scripts, configure/operate simulations, supervise combat systems teams, and perform project planning to deliver Fleet Synthetic Training to ships.

Provide network engineering and sustainment for CTU 4 tactical systems supporting Navy afloat operations. Maintain, configure, and troubleshoot CANES/NIPR/SIPR enclaves, virtualized environments, and cross-domain interfaces; perform patching, RMF/STIG compliance, vulnerability remediation, and system testing. Coordinate with NIWC, TYCOM, and shipboard personnel, support pier-side and underway testing, produce technical documentation, and assist automation and DevSecOps-aligned hardening where applicable.

Lead design, integration, testing, certification, and fielding of airborne and mission-critical communications/network systems. Oversee system installation, configuration management, troubleshooting, documentation, and readiness certification activities while mentoring junior engineers and supporting cross-functional teams in a classified on-site environment.

Perform data collection, analysis, modeling, and visualization to build and deploy scalable ML/AI solutions (including NLP/LLM) in operational defense environments. Collaborate with engineers, implement data processes, validate predictive models, and support secure, containerized deployments while training teams and writing quality procedures.

Perform on-site systems engineering for classified airborne and communications mission systems. Design, integrate, test, certify, deploy, and maintain networked systems. Develop requirements, technical documentation, perform site surveys, troubleshooting, configuration management, and lead cross-functional teams while supporting operational test and readiness certifications.

Provide Marine Corps logistics support including developing an Integrated Logistics Support (ILS) plan for SPDRS, and support SIXCOM and the USMC Expeditionary Fueling Dispensing System operations and sustainment.

Provide 24/7 Tier 2 help desk and network administration for MQ-9 communications and global network architectures. Troubleshoot and configure network devices, monitor performance, analyze logs, manage tickets, maintain documentation and support network testing, multicast, VPN/IPSec, and routing protocols in a shift work environment.

Provide management analysis and project oversight for the Army NetMod program: gather and analyze operational data, identify improvements, produce monthly financial and government reports, develop procedures and training, coordinate resources and staffing, and present findings to stakeholders.

Provide engineering support for C-NOC MQ-9 communications, maintain and troubleshoot complex network infrastructure (BGP/EIGRP/OSPF, DMVPN, IPsec), administer Cisco ISE and SolarWinds, configure HAIPE devices, perform root cause analysis, plan upgrades, monitor performance/security, train administrators, and support 24/7 operations with on-call and weekend coverage.

Develop and deploy Java applications and microservices on RHEL/Linux, support containerized hosting and VMware hypervisors, create scripts and deployment automation, follow Agile processes, harden systems to DISA STIG/RMF guidance, and produce test plans and engineering documentation for PEO C4I baselines.

Provide programmatic, administrative, and analytical support for U.S. Navy Above Water Sensors and Lasers programs across the full acquisition lifecycle. Ensure compliance with DoD 5000 series, NAVSEA guidance, and Adaptive Acquisition processes while coordinating with PMO, technical directors, and cross-functional teams to deliver timely, high-quality program products.

Provide programmatic, analytical, and acquisition support across lifecycle phases for U.S. Navy above-water sensors and lasers. Support planning, milestone readiness, acquisition documentation, contracting, reporting, and coordination with government program leadership per NAVSEA, DoD 5000 series, and JCIDS.

Support SMWDC HQ by performing capability assessments across surface, air, and mine warfare mission areas. Apply SWO experience to enhance warfare training, write POM/technical documentation, liaise with acquisition/POM processes, and support staff and fleet operations planning to improve tactical readiness and lethality.

Provide full‑spectrum systems engineering and technical analysis for Navy above‑water sensor and combat system programs. Support requirements development, system design reviews, MBSE/digital engineering, risk management, trade studies, performance assessments, test & evaluation planning, modeling & simulation, cybersecurity/RMF documentation, and acquisition milestone technical input while coordinating with government and industry stakeholders.

Provide software engineering, systems analysis, and cybersecurity support for US Navy above-water sensors and combat systems across development, test, production, and sustainment. Support software implementation/integration, engineering trade studies, technical documentation, and system certification activities.

Support P-8A mission and combat systems engineering: perform CONOPS analysis, requirements decomposition, roadmaps, ECP/TD implementation, troubleshooting, Agile support, create technical documentation, use cases, and software development plans to meet fleet expectations.

Design and develop mechanical components, assemblies, and systems for military electronic platforms using CAD. Select materials and manufacturing processes, create engineering drawings, develop and execute test plans, troubleshoot issues, and collaborate with electrical and software teams. Ensure secure-environment design (TEMPEST, cable management), participate in design reviews, and support continuous improvement and documentation.

Lead full-lifecycle execution of large, complex defense support-services programs (Surface Radars, EW, EO/IR, Decoys, Laser Systems). Responsible for cost, schedule, performance, subcontractor oversight, risk management, and government customer engagement. Serve as primary interface with stakeholders to meet contractual requirements and program objectives. Requires Secret clearance and onsite work in Washington, D.C.

Senior analyst responsible for developing, planning, tracking, and analyzing surface ship training and certification requirements and policy. Produce Flag-level briefings, support surface warfare training strategy, manage synthetic training capabilities and LVC initiatives, and align training with POM and Ready Relevant Learning processes. Requires extensive senior surface Navy operational and staff experience and the ability to obtain an active Secret clearance.