PebbleJar
Elite engineering in flight autonomy, flight controls, and safety-critical flight software. We deploy senior-level expertise to accelerate mission-critical aerospace programs.
Mission-Critical Challenges in Aerospace Engineering
Talent Scarcity
Acute shortage of senior autonomy and flight controls engineers with deep domain expertise. Industry demand far exceeds the available talent pool, creating program bottlenecks.
Integration Delays
Flight software integration and certification timelines stretch programs beyond acceptable limits. DO-178C compliance bottlenecks slow progress and jeopardize schedules.
Critical Path Risk
Flight test milestones slip due to technical gaps. Program schedules are jeopardized by engineering resource constraints and expertise deficits.
Hiring Inefficiency
Traditional hiring cycles span 4–6 months. Generalist contractors lack specialized knowledge in autonomy, GN&C, and certifiable embedded systems.
Market Opportunity
Surging Demand
eVTOL, UAS, defense, and advanced avionics programs require immediate access to senior-level autonomy and flight controls expertise. Time-to-capability is now the competitive differentiator.
Critical Gap
Programs need trusted, specialized engineering teams capable of rapid integration and measurable delivery. PebbleJar bridges the gap between program urgency and engineering execution.
Senior Engineering Team
PebbleJar deploys highly specialized engineers with 10–30 years of flight-critical systems experience across OEMs, Tier-1 suppliers, and defense primes.
Pablo Borruel
Supernal Chief Engineer. 23+ years eVTOL, helicopter, and spacecraft systems leadership.
SpaceX Principal Engineer on Falcon 9 and Starlink GNC. Northrop Grumman and Airbus systems architect expertise.
Noam D Eisen
Lucid Aero Aerospace Engineer. 8+ years flight test, integration, systems engineering, and design reviews.
Wright Electric and Spaceship Company aerospace engineer. Flight controls, human factors, and advanced aircraft development expertise.
Hafez Khalifa
Supernal Associate Chief Engineer. 15+ years aircraft architecture, systems safety, and certification. Lockheed Martin and CMC Electronics avionics architect. DAL-A flight controls and FMS expertise.
Deschzunell Catlin
NASA avionics engineering lead. 15+ years flight test and systems integration.
Supernal Sr. Technical Program Manager. Flight test execution and GNC expertise for next-generation aircraft.

Every engineer has delivered production flight systems—credibility built on real programs, real aircraft, real results.
Engineering Engagement Model
01
Assess
Data-driven analysis of technical problem, constraints, program phase, and risk factors.
02
Architect
Develop multiple solution paths optimized across scope, schedule, cost, and certification requirements.
03
Integrate
Embed seamlessly into customer engineering workflows, toolchains, and development environments.
04
Execute
Deliver rapid, targeted work packages with continuous visibility and progress tracking.
05
Deliver
Provide certifiable engineering artifacts, tested functionality, and traceable documentation.
Time to contribution: Days to weeks, not months. PebbleJar adapts to your program timeline—whether immediate surge support or phased integration over a quarter.
Core Engineering Capabilities
Flight Controls
Control law design, flight dynamics modeling, stability analysis, guidance algorithms, and envelope protection for fixed-wing, rotary, and eVTOL platforms.
Autonomy
Mission planning, GN&C integration, perception fusion, pilot-optional capability, and decision-making architectures for UAS and autonomous aircraft.
Flight Software
Embedded C/C++, RTOS, middleware integration, software architecture, and DO-178C compliance for safety-critical flight control and avionics systems.
Systems Engineering
Requirements decomposition, system architecture, functional hazard analysis (FHA), and ARP4754A compliance for complex flight systems development.
Test & Evaluation
SIL/HIL simulation environments, flight test instrumentation, test procedure development, and data analysis for V&V and certification evidence.
Trusted by Industry Leaders
PebbleJar engineers bring proven experience from the most demanding aerospace and defense programs. Our team has contributed to flight-critical systems at organizations that define industry standards.
Why PebbleJar
Deep Domain Specialization
Senior engineers with 10–30 years in autonomy, flight controls, and certifiable flight software. Not generalists—specialists who understand the nuances of safety-critical systems.
Certification Fluency
Native understanding of DO-178C, DO-254, ARP4754A. We speak the language of safety-critical systems and regulatory compliance, accelerating your path to certification.
Rapid Integration
Onboard in days, contribute in weeks. We adapt to your tools, processes, and program phase—delivering immediate impact without disruption to existing workflows.
Proven Delivery
Track record across autonomy, controls, and flight software programs. Real systems, real flight test, real certification experience that translates to program success.
High-Clarity Communication. Decisive Engineering.
PebbleJar delivers not only technical execution but also the clarity and decision quality that program leaders require. We translate complex engineering into actionable insights, enabling faster decisions and reducing program risk.
Our engineers combine deep technical expertise with the ability to communicate effectively across organizational levels—from hands-on implementation to executive briefings.
Engage PebbleJar
Partner with elite engineering talent to accelerate your autonomy, flight controls, and safety-critical software programs. Let's discuss how PebbleJar can support your mission-critical objectives.