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i3 has an exciting opportunity for a RF Engineer to support the Naval Research Laboratory, Tactical Electronic Warfare Division. The TEWD's mission is to protect the warfighter from emerging threats by advancing electronic warfare (EW) through RDT&E of current and future technologies. The RF Engineer will design RF subsystems for threat simulators, as well as serve as a subject matter expert (SME) during the analysis of seekers.   Pay Range $130,000 - 225,000 The pay range for this position is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include...

i3 is seeking an experienced Radar Systems Engineer to design, develop, and optimize advanced radar systems for defense applications. The successful candidate will work on cutting-edge radar technologies, from initial concept through deployment, ensuring systems meet stringent performance, reliability, and performance requirements.   Pay Range $127,000 - $250,000 The pay range for this position is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending...

i3 is seeking a Software Engineer with 14+ years of professional experience to develop a new digital engineering environment for a government customer. This environment will include virtual testing and deployment capabilities to simulate UxS platforms for the DoD. Experience with web and platform engineering is desired.

i3 has an exciting opportunity for a Digital Hardware Engineer to support the Naval Research Laboratory, Tactical Electronic Warfare Division. The TEWD's mission is to protect the warfighter from emerging threats by advancing electronic warfare (EW) through analysis and RDT&E of current and future technologies.   Pay Range $115,000 - 189,000 The pay range for this position is a general guideline...

We’re seeking an Electrical Engineer with strong embedded programming skills to design, build, and maintain hardware simulators and hardware-in-the-loop (HIL) testbeds used to validate real-world systems before they reach the lab, range, or field. You’ll work at the intersection of electronics, firmware, and test automation; creating simulation hardware, interface boards, and real-time control/monitoring software that makes system testing faster, safer, and more repeatable.   If you enjoy hands-on lab work, debugging across hardware + firmware boundaries,...

The NASA Armstrong Flight Research Center (AFRC) Navigator/Mission Planner performs duties in support of the operations of all aircraft assigned to AFRC. Navigators/Mission Planners will plan and fly sorties for NASA and NASA customers ensuring that quality products and safe operations are provided as tasked. AFRC aircraft are located at the main campus at Edwards Air Force Base, California.    Salary Range: $130,000 - $160,000  

We’re seeking a Data Analysis & Event Reconstruction Engineer to reconstruct trajectories and key event timelines from diverse data sources collected during lab, range, and field activities. You will fuse and align time-stamped data from sensors, instrumentation, and logs to produce defensible trajectory solutions and event reconstructions that support engineering decisions, test reporting, and operational effectiveness.   This role is a strong fit for an Electrical, Mechanical, or Aerospace Engineer who enjoys turning disparate, real-world data into clear answers, combining estimation, physics, and MATLAB-based analysis into repeatable workflows.  

We’re seeking a Power Distribution Engineer to design and implement reliable power architectures for complex electronics and test systems. You will own power sequencing (voltage rail order, timing, and interlocks), PCB-level power distribution, and relay/contactor control logic to ensure safe bring-up, robust operation, and clean shutdown across electro-mechanical assemblies.   This role is ideal for an engineer who enjoys practical design ownership – requirements to schematic/PCB, build and debug – and who is comfortable working across analog power,...

We’re seeking an Electrical Engineer with strong embedded programming skills to design, build, and maintain hardware simulators and hardware-in-the-loop (HIL) testbeds used to validate real-world systems before they reach the lab, range, or field. You’ll work at the intersection of electronics, firmware, and test automation; creating simulation hardware, interface boards, and real-time control/monitoring software that makes system testing faster, safer, and more repeatable.   If you enjoy hands-on lab work, debugging across hardware + firmware boundaries,...

We’re seeking a Hardware Simulator Engineer / Operator to support the operation, troubleshooting, and sustainment of hardware simulators and hardware-in-the-loop (HIL) testbeds in both laboratory and field environments. You will be hands-on with real equipment, setting up systems, running test scenarios, collecting and validating data, and ensuring simulator availability for customer demos, developmental testing, and field events.   This role is ideal for someone who enjoys practical engineering, disciplined execution, and fast-paced troubleshooting, from...

i3 is searching for an Azure Cloud Engineer to support the Missile Defense Agency Information Management and Software Services (AIMSS) effort. The mission is to design and implement a Missile Defense System with multiple layers of protection. The Azure Cloud Engineer performs administration of cloud and on-site technologies and provides end-to-end solutions for IT Systems, creates and configures virtual and physical machines in a multi-platform environment, monitors system performance and addresses any issues through an effective support process. This position is located at Redstone Arsenal in Huntsville, AL.

NASA Armstrong Flight Research Center (AFRC) Aircrew member performs duties in support of the operations of all aircraft assigned to applicable base location. Pilots will fly sorties for NASA and NASA customers to ensure that quality products and safe operations are provided as tasked. Aircraft are operated to meet Agency platform, research, and support aircraft requirements. AFRC aircraft are located at the main campus at Edwards Air Force Base, California. Deployed operations, both CONUS and OCONUS, are routine for these aircrew positions.  

i3 is seeking a Principal AI Engineer to lead the design, development, and deployment of AI-driven security and data solutions for defense and intelligence community customers. This role combines hands-on technical expertise with strategic leadership to advance i3's AI capabilities across cybersecurity threat detection, supply chain risk management, and mission-critical analytics platforms. This is a full-time position based in Huntsville, AL (with potential for hybrid flexibility).

i3 is seeking a Software Reverse Engineer (Electronic Warfare / Embedded & Binary Analysis) to support the Naval Research Laboratory’s Tactical Electronic Warfare Division. You will reverse engineer and analyze software used in electronic warfare (EW) and build purpose-driven tools that help teams test, characterize, and understand real-world systems. This role is ideal for someone who enjoys deep technical problem solving, from disassembly and debugging to building automation and instrumentation that turns analysis into action.   Pay Range $129,000 - 210,000 The pay...

i3 is seeking a VMware Systems Administrator. The selected candidate will provide technical expertise supporting information system components, infrastructure integration and maintenance to satisfy architectural and business requirements. The VMware Systems Administrator must have a customer centric approach and provide all levels of support for the user base community.

i3 is seeking a Virtualization Systems Administrator to join a team to support an Army contract. Provide technical expertise supporting information system components, infrastructure integration and maintenance to satisfy architectural and business requirements. The Virtualization Systems Administrator must have a customer centric approach and provide all levels of support for the user base community. 

i3 is excited to offer a part-time Software Engineering Internship within our Science, Engineering, and Technology (SET) business unit. This is a unique opportunity to gain hands-on experience in developing cutting-edge autonomy and command and control (C2) software for uncrewed air, ground, and waterborne systems. Join our dynamic team where innovation meets real-world applications.   This internship will be for the Summer 2026 period and will be onsite in Huntsville, AL.  

i3 is seeking a skilled Budget Analyst to provide high-level financial and budgetary analysis in support of the DEVCOM Aviation and Missile Center. This role will specifically assist civil service personnel assigned to the S3I Directorate, Strategic and Operational Analysis Division, in Huntsville, AL. Responsibilities will include budget planning, execution, tracking, and reporting to ensure informed decision-making and effective resource management. This is a full-time position based in Huntsville, AL.

i3 has an exciting opportunity for a machine learning (ML) engineer to support the development of DoD systems. The ML engineer will develop and program neural network (NN)-based software solutions. Additionally, the ML engineer will aid in the analysis of artificial intelligence (AI)-enabled systems.   Pay Range $132,000 - 234,000 The pay range for this position is a general guideline only and not a guarantee of compensation or salary....