Welcome to our Career Page!

i3 is proud to help our nation’s military personnel make the transition to civilian careers through the Department of Defense (DoD) SkillBridge program. These opportunities are specifically for transitioning service members to gain valuable civilian work experience through an individual internship during their last 6 months of service, for up to 180 days. Participants are not eligible for compensation as they continue to receive military compensation and benefits as active-duty service members.    i3...

i3 is seeking a Senior Integrated Master Scheduler to develop Integrated Master Schedules (IMS) for the for Foreign Military Sales (FMS) and Building Partner Capacity (BPC) Programs. Must be able to integrate tiered master plans and schedules for various programs with resource loading.

i3 has a Summer 2026 internship opportunity for a Program Finance Intern to be located at our Corporate Office in Huntsville, AL.

i3 is offering a part-time Summer 2026 internship position within our Accounting Department for Huntsville, AL. This candidate will be exposed to the Accounting environment by learning the basics of Accounts Payable, Accounts Receivable, Time and Expense, etc.   The intern program allows students with the opportunity to experience hands on work experience in support of on-going projects. We offer flexibility within the program based upon the student’s schedule.

i3 is seeking a EO/IR Systems Engineer to join our team. This is a hands-on, end-to-end role that applies first-principles thinking to design optical sensors, model sensor performance, and support the integration of those designs into real-world hardware. The candidate will define test strategies, assist in building test infrastructure, and validate systems under realistic conditions. The candidate will advise on the technical direction and then develop it for a rapidly evolving, low-cost, novel system.   This position is contingent upon funding.

i3 has an exciting opportunity for an Electrical 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.   Pay Range $84,000 - 163,000 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...

i3 has an exciting opportunity for an Electrical 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.   Pay Range $65,000 - 148,000 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 (but are not limited to) responsibilities of job,...

The Engineering Intern supports the organization in an area related to the student’s current area of graduate or undergraduate engineering study. Learns skills related to their degree while also supporting departments across the organization with engineering tasks. Work is performed under immediate supervision and provides a real-world application of classroom knowledge. Examples of Engineering internships include but are not limited to: Electrical, Mechanical, Aerospace, and Systems Engineering roles.   This position is for the Summer 2026 Term and will be an onsite position in Huntsville, AL.

i3 is offering a part-time Summer 2026 internship position within our Army Training Solutions business unit. This candidate will be exposed to the development of Interactive Multimedia Instruction (IMI) within an Agile software development environment. This candidate will interact with Instructional Systems Designers (ISD), 3D Artists, Software Developers, Designers, and Program Managers in support of DoW training development.

The Tactical Software and Autonomy Solutions (TSAS) team at i3 supports USSOCOM Headquarters in Tampa, FL in developing cutting-edge autonomy software architectures to distribute autonomous control across a diverse assortment of uncrewed air, ground, surface, and subsurface platforms. The team is seeking a Subject Matter Expert in Uncrewed Systems (UxS) Software Systems with 10+ years of professional experience to assist in managing the execution of cutting-edge UxS system development projects at i3 in support of various DoD customers.

We are seeking a Software Engineer to support the Launched Effects (LE) Product Office (PO) within the Program Management Office (PMO) Uncrewed Aircraft Systems (UAS) and contribute to the development of new LE weapons platforms through the integration of DevSecOps principles and practices. As a LE Software Engineer, you will play a pivotal role in transforming LE weapon systems into more agile, secure, and efficient platforms. This position is located in Huntsville, AL. 

The Data Analyst supports the Missile Defense Agency’s (MDA) Agency Information Management and Software Services (AIMSS) program by enhancing data visibility, quality, and usability across the test data management lifecycle. This role bridges data management operations and technical analysis—leveraging structured methods, tools, and reporting to improve efficiency, ensure metadata consistency, and identify opportunities for process improvement.   The Data Analyst works closely with Data Managers, Data Scientists, and software engineers...

i3 has an exciting opportunity for an Electrical Engineer Intern to support the Naval Research Laboratory, Tactical Electronic Warfare Division. TEWD’s mission is to protect the warfighter from emerging threats by advancing electronic warfare (EW) through RDT&E of current and future technologies. This position is for the Summer 2026 internship and will be located onsite at i3's Arlington, VA location.   Pay Range $25.00 - 35.00 per hour The pay range for this position is a general guideline only...

At i3, our Industrial Security Team is integral to our success. Do you enjoy learning new ideas and processes? Are you committed to bringing a unique and innovative approach to constantly evolving security requirements? Are you customer service-centric and looking to excel at every opportunity?  If so, we are seeking an exceptional individual looking to begin their career as an Industrial Security Specialist.  This is an entry-level position with the expectation for growth into all aspects of security. If you are interested in starting a career in the national security field and want to help us solve our nation’s toughest problems, please apply below!

i3 is seeking Cybersecurity Compliance Specialist who will be skilled in monitoring security controls, implementing compliance tools, and ensuring adherence to Risk Management Framework (RMF) controls and policies. Experienced in collaborating with all levels of civilian and contractor stakeholders to ensure compliance requirements into daily operations. Located in Huntsville, Alabama.

i3 has an exciting opportunity for a Machinist to support the Naval Research Laboratory, Tactical Electronic Warfare Division. The TEWD's purpose is to protect the warfighter from emerging threats by advancing electronic warfare (EW) through simulation, testing and evaluation. Candidate will be responsible for mechanical fabrication and assembly of a variety of electromechanical hardware for use within an RF test facility.   Pay Range $31.73 - 51.44 per hour The pay range for this position is a general guideline only...

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 (but are not limited to) responsibilities of...

i3 has an exciting opportunity for a RF 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 RDT&E of current and future technologies. RF Hardware Engineers design and analyze RF components and circuit assemblies for radar systems.   Pay Range $85,000 - 151,000 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 (but are not limited to) responsibilities of job, education, experience, knowledge,...

At i3, our Security team is integral to our success. Do you have a passion for all things security? Are you committed to bringing a unique and innovative approach to constantly evolving security requirements? We are seeking a motivated Facility Security Officer (FSO) at our Orlando, Florida office who strives to excel at every opportunity. The FSO will be responsible for obtaining and maintaining the Facility Clearance and overseeing the construction of a new Open Storage Area.  If you are interested in helping us solve our nation’s toughest problems, apply below!

i3 is searching for a Cloud Engineer to support multiple Training Aids, Devices, Simulators and Simulations (TADSS) projects. The Cloud Engineer performs administration of cloud and on-site technologies and provides end-to-end solutions. This position is in Huntsville, AL.