Description Context-Driven AI Orchestration Engineering for Rapid Full-Stack Delivery documents two greenfield case studies demonstrating how comprehensive project-level context provision (3,500+ line CLAUDE.md documents) and multi-agent AI orchestration (3-role system: Product Manager, App Developer, Backend Developer) enabled rapid delivery of production-grade mobile and backend applications. Key Findings Observed Outputs (N=2 projects): 35,434 lines of code delivered across 99 git commits in 7.9 person-days Weighted development velocity: ~4,485 LoC/day Code quality: 0 TypeScript strict mode errors, 100% accessibility label coverage (grep-verified) Technology stack: React Native, TypeScript, Node.js/Express, Spring Boot Methodology: PIVA Framework 80% Preparation (context engineering) 1% Instruction (minimal task directives) 19% Verification (systematic quality checks) 0% Autonomy (continuous human oversight) Limitations This study explicitly acknowledges: Sample size: N=2 (insufficient for statistical generalization) No control groups or A/B comparisons Baseline estimates derived from industry proxies, not measured human teams Source code under 12-month client confidentiality embargo Scope limited to greenfield development on React Native/TypeScript stack Reproducibility Complete methodology documentation provided: PIVA framework protocols CLAUDE.md context template (3,500+ lines) AI agent role profiles (Product Manager, App Developer, Backend Developer) Bash-verifiable measurement commands (TypeScript, accessibility, git metrics) Verification scripts and quality gates Data Availability: Methodology templates and measurement protocols available immediately. Full source code repositories will be released 12 months post-publication, subject to client approval. Contribution This work provides: Existence proof that context-driven AI development can deliver enterprise-grade applications rapidly Reproducible framework enabling practitioners to apply PIVA methodology to their own projects Transparent measurement baseline for future controlled studies (N≥30 recommended) Complete documentation (10,742 lines) of context engineering, multi-agent orchestration, and verification protocols Important: This study does NOT claim universal productivity multipliers or statistical validation. It presents observed outcomes from two projects as a measurement baseline and invites community replication for larger-scale validation. Keywords AI-augmented development, context engineering, multi-agent systems, software productivity, human-AI collaboration, large language models, PIVA framework, prompt engineering, TypeScript, React Native, enterprise software development Citation If you use this methodology or templates in your research, please cite: Kim, J. S. (2025). Context-Driven AI Orchestration Engineering for Rapid Full-Stack Delivery: Two Greenfield Case Studies (N=2). DOI: [to be assigned by Zenodo] Contact Author: Jacob Sunho Kim Email: shkim.the@gmail.com Affiliation: Independent Researcher, Seoul, South Korea