Project index
Selected work in model evaluation, agent systems, applications, infrastructure, research, and teaching. Grouped by kind, newest first.
Working prototypes 7
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Budget Triage A self-hosted personal-finance system that treats correctness as policy you can prove, using cross-surface governance gates and a synthetic-data extraction harness rather than promises.
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Flux A control plane for AI image generation that compiles a single intent across a registry of providers, streams results, and captures full artifact and curation lineage in content-addressed storage.
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Host Capability Substrate (HCS) An operations kernel that gives every agent on a workstation a shared substrate for ground-truth, capability exposure, policy, approval, and audited execution. designed ring-by-ring with imports enforced in CI from the first commit.
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Hub of Wyn games A family-facing game suite built as agentic-framework output. proof that an AI-assisted development practice can produce coherent, tested software, from a 2D platformer to a Phaser monorepo side-scroller and an AI asset pipeline.
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ScopeCam A solo-built Android app for serious USB-microscopy workflows. a multi-module architecture over a vendored native imaging stack with session-based scientific capture and ArchUnit-enforced boundaries.
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shelltutor A dependency-free, single-file shell tutor that teaches absolute beginners the prerequisites for vimtutor through five mastery-gated stages, portable across Linux and macOS.
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Symmetry Groups Finite-group theory taught through play, on a generic FiniteGroup domain whose axioms are enforced as tests: 328 tests across 30 files, all passing. A playable MVP build is deployed for testing; the source repository is private. jefahnierocks.github.io/symmetry-groups
Released packages 1
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Agentic Architecture Audit A self-developed, released methodology that audits agent-built systems in eleven evidence-first phases. every finding cites the exact path, line range, and command that produced it.
Shipped systems 1
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Dicee / Game Lobby A solo-built, install-free multiplayer dice game taken from architecture through deployment. a deterministic Rust/WASM engine paired with real-time edge infrastructure for live play. dicee.games
Published research 2
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Pediatric walking-speed reference norms A peer-reviewed clinical study (n=1,593) establishing pediatric gait reference norms, contributing the statistical methodology and factorial analysis behind published reference data.
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Peripherally-Multiplicative Spectral Preservers Between Function Algebras (Ph.D. dissertation, 2013) Doctoral research in functional analysis and operator theory that extended composition-operator theory under spectral conditions. the formal foundation of a mathematician's career.
Teaching 3
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KPC/UAA mathematics & statistics course series (2017 → 2025) Eight years of sustained undergraduate instruction at KPC/UAA across calculus, statistics, differential equations, and modern algebra, with documented pedagogy and versioned course materials.
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Assistant Professor of Mathematics A three-year international tenure-track mathematics appointment that pairs undergraduate teaching with original research, anchoring a career built across continents.
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Peace Corps Education Volunteer Two years of education service in rural South Africa combining classroom teaching, school administration, and cross-cultural work. the early-career foundation of an international teaching path.