About Treeline

Treeline Global is a systems architecture firm developing advanced technology frameworks for energy, structure, and environmental resilience. Operating across aerospace, defense, infrastructure, acoustics, and architecture, our systems are designed for high-performance environments where precision, durability, and continuity are critical. Headquartered in California with a global footprint, Treeline supports strategic partners advancing planetary infrastructure, field intelligence, and long-range stewardship.

Regenerative Systems, Globally Deployed

Treeline designs advanced infrastructure systems that integrate structural resonance with ecological and material intelligence. These frameworks are engineered for global deployment across seismic, architectural, energy, and environmental domains. Each system is built for high-load conditions, long-range adaptability, and region-specific functionality. Designed to hold, adapt, and regenerate—these systems form the groundwork for the next era of infrastructure.

Ethical by Design, Grounded in Science

Scientific integrity and ethical governance are core architectural layers within every Treeline system. From codebase to deployment protocol, each framework is developed with embedded safeguards—balancing performance with long-term planetary alignment. Rooted in original equations and cross-disciplinary modeling, these systems operate with coherence across physical, computational, and ecological domains. Ethics aren’t added on—they’re structurally encoded.

Where Resonance Becomes Structure

Structured Resonance is a system architecture developed by Treeline Global during Phase I. It governs how vibration, data, and energy align through harmonic logic—establishing coherence across physical infrastructure, acoustic systems, artificial intelligence, and language itself. Founded on original mathematics developed through the HERA Initiative, Structured Resonance is the foundation of every Treeline deployment. It is original to this architecture and in active use.

The HERA Initiative

The HERA Initiative is Treeline Global’s core R&D program. Developed over multiple years by interdisciplinary researchers and doctoral-level experts, HERA (Harmonic Energy Resonance Architecture) originated as a theoretical framework for structured coherence across complex systems. It has since evolved into a deployable platform for physical infrastructure, energy optimization, seismic modeling, and AI alignment. The HERA Initiative remains an active research body, led by Chief Systems Architect and Principal Investigators, Dr. Salena Fehnel and Dr. Melissa Geiger, within Treeline—advancing original mathematics, system logic, and sovereign-grade architecture.

Internships & Fellowships

Treeline Global is dedicated to fostering the next generation of systems thinkers, interdisciplinary researchers, and resonance-based designers. We offer tailored internships and research fellowships advancing the next generation of innovative design.

Team Directory

Dr. Salena Fehnel

Founding Partner | Chief Systems Architect | Principal Investigator, HERA Initiative

Bay Area born. Globally deployed. Salena Fehnel is a systems strategist and former academic executive who’s led nine-figure infrastructure initiatives, advised sovereign development teams, and designed frameworks that hold under pressure. Her work blends seismic logic, sovereign AI, and computational design into scalable architectures that don’t just react—they stabilize.

She’s a published researcher and international speaker on Structured Resonance. At Treeline, she leads the architecture layer—designing systems that absorb complexity and build for permanence.

Dr. Melissa Geiger

Founding Partner | Chief Systems Architect | Principal Investigator, HERA Initiative

Melissa Geiger is an art historian, systems theorist, and large-scale integration designer with a global footprint in cultural preservation, acoustic architecture, and advanced signal systems. She’s advised on multibillion-dollar IP strategy, designed resonance frameworks for luxury environments, and presented internationally on applied resonance and legacy infrastructure.

She brings visual intelligence, design fluency, and cultural depth to Treeline’s system integration. If it needs to hold, harmonize, or last—she’s the one who makes it work.