Avionics Systems Engineer with Security Clearance

Overview i3 is seeking an Avionics Systems Engineer to support a rapidly evolving, low-cost, novel system. You will be responsible for designing, developing, testing and integrating advanced avionics solutions for sUAS platforms. The position involves collaborating with a small, diverse team of engineering professionals to ensure project goals and timelines are achieved. This position is in Huntsville, Alabama, and the candidate can expect up to 10% travel. This position is contingent upon contract award, with an estimated timeframe of December 2025. Responsibilities

• Develop air and missile system dynamics, guidance, navigation, and flight controls models.
• System engineering and integration support for multiple Avionics products including Flight Management Systems (FMS), Autopilot, Displays, Datalink, etc.
• Reverse engineer flight parameters for existing systems and research new algorithms for air and missile systems
• Analyze real world data and compare against simulated data for model verification.
• Aircraft Level Avionics systems design, integration and test
• Systems validation and test of new Avionics functionality using dynamic aircraft simulation and test facilities (Integrated Test Benches)
• Generate design drawings and system schematics as well as conduct analysis to support and substantiate design approaches.
• Support structural, thermal, and aerodynamic testing activities.
• Support the rapid iteration cycle: flight test, identify points of failure or areas for improvement, and implement design changes for the next build.
• Collaborate with the broader engineering team to ensure mechanical designs meet the requirements of our autonomy and mission systems.
• Identify and troubleshoot mechanical, optical laser, electrical, and build issues.
• Work alongside an interdisciplinary team of mechanical, electrical, and software engineers to analyze in-situ data as well as post-print material characteristics and rapidly iterate on improving the printing technology.
• Support engineering efforts in preparation for Critical Design Reviews (CDRs). Qualifications Education/Experience
• Bachelor's Degree in an applicable engineering area (mechanical, aerospace, manufacturing, and engineering technology, etc.) Additional experience may substitute for degree.
• 2-7 years of experience in mechanical design, robotics, or a related field with a portfolio of hands-on projects.
• Fundamental understanding of drone components (flight controllers, ESCs, motors, communication links) and basic aerodynamic principles.
• Familiarity with CAD and simulation software (SolidWorks, CATIA, NX, ANSYS, MATLAB, etc.).
• Understanding of aerodynamics, propulsion, structures, and materials.
• Knowledge of industry standards (AS9100, FAA Part 23/25, MIL-STD).
• Experience with programming or data analysis (Python, MATLAB, C ).
• Hands-on experience with composites, propulsion systems, or avionics integration.
• Ability to obtain and maintain a DoD security clearance.
• Ability to travel to suppliers as required.
• U. S. Citizenship is required. Knowledge/Skills
• Excellent communication, teamwork, and client service skills; ability to clearly communicate in discussions and written documents, and to deliver feedback clearly and tactfully.
• Be extremely organized and exceptionally detail oriented.
• Work well both independently and in a team environment.
• Be energized by a fast-paced work environment.
• Must be able to communicate with others effectively.
• Manage time wisely and prioritize tasks.
• Work well under pressure. Physical Demands
• The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.
• While performing the duties of this job, the employee is regularly required to talk or hear. The employee frequently is required to stand; walk; handle or feel; and reach with hands and arms.
• The employee is occasionally required to sit; climb or balance; and stoop, kneel, crouch or crawl. The employee must be able to lift and/or move up to 10 pounds and occasionally lift and/or move up to 25 pounds. About i3 i3 is a technically diverse, 100% team member owned business, headquartered in Huntsville, Alabama specializing in missile and aviation systems engineering and logistic services, electronic warfare and electromagnetic effects analysis, UAS system integration and flight operations, full lifecycle C5ISR engineering services, cybersecurity and IT/IA innovative solutions and virtual training, simulation & serious game development and implementation. We have established a broad offering of products and capabilities collectively providing decades of experience supporting the full complement of DoD military services, Missile Defense Agency, National Aeronautics and Space Administration, and a variety of other Government organizations and private industry customers. Perks of being a team member owner include:
• Long-term financial security
• Higher job satisfaction
• Greater job security
• Personal and professional growth
• Great company culture Other outstanding benefits:
• Excellent insurance coverage
• 401(k) match
• Generous PTO
• Health and wellness incentives
• Tuition and certification reimbursement
• Countless opportunities to give back to the community through i3 Cares We work hard. We compete hard. We play hard. Apply now to join us!