Recent Accomplishments

C# / .NET · 26 projects · 26,379 LOC · 158 commits (104 since mid-December)

Built a comprehensive suite of reusable .NET libraries spanning geometry, quantities, file systems, money, XML processing, and property management. A production-quality codebase with rigorous engineering discipline. The majority of the work — 104 commits adding ~27,700 net lines across 296 files — was delivered in a 50-day sprint from mid-December through early February.

• Developed 8 core libraries (Utility, FileSystem, Xml, Quantity, GeometryUtility, ModelCore, Money, Property) with clean separation of concerns — 6 of these libraries were created from scratch during this period
• Wrote 2,268 passing unit tests across 11 test projects — a 2.02x test-to-production code ratio, demonstrating a test-first development approach
• Achieved 100% code coverage on RSA.FileSystem, Quantity/src, Quantity.NUnitExtension, and GeometryUtility.NUnitExtension
• Built the RSA.Property library with SingleValuedProperty, Scalar<T>, Vector<T>, Color (with CSS/X11 named color support), value comparisons (ContinuousRange, DiscreteRange, RangeBoundary), and value parsers
• Defined domain-specific property type systems: Mechanical (38 types), Electrical, Optical, and Thermal — loaded from XML with auto-registration and per-category validation
• Added quantity conversion support (integer and real quantities), binary +/- operators for IntegerQuantity, composite unit support (units with ^), and dimensionless quantities (PoissonsRatio)
• Created 3 NUnit extension libraries for custom test assertions, improving test readability and maintainability
• Built 2 WPF libraries (WPFLib.Utility, WPFLib.Quantity) including a specialized numeric input control for quantity conversion
• Produced 19 markdown documentation files and 11 XML data files for units, quantity types, and property type definitions

C#, Python, JavaScript · ASP.NET Core 8, GTK 3, PyVista, Docker · 9,741 LOC across 65 files

Designed and built a full-stack distributed system for CAD model storage, visualization, and cloud integration — spanning three integrated components with a shared data interchange format.

• Architected a unified CAD_ModelData interchange format implemented identically in C# and Python, enabling seamless interoperability across all system components
• Built CADModelServer: a containerized REST API (ASP.NET Core 8) with 8 endpoints, PostgreSQL persistence, Redis caching, and Nginx reverse proxy — fully orchestrated via Docker Compose
• Developed cadquery: a desktop parametric CAD application with a GTK 3 GUI, PyVista 3D viewer, FreeCAD exporter, and a library of 11 parametric models (gears, brackets, hex bolts/nuts, and more)
• Created onshape: a cloud integration client that extracts geometry from the Onshape REST API v6, including tessellation, mass properties, and STL export
• Wrote 3,619 lines of documentation across 15 files covering deployment, installation, API usage, and design decisions

Python, GTK 3/4 (PyGObject), GitPython · 7,004 LOC · 86 files · 73 commits

Built a full-featured desktop Git GUI application from scratch in a focused 9-day sprint, demonstrating rapid delivery and clean architecture.

• Delivered a complete Git GUI with diff viewing, line-level staging/unstaging/reverting, branch management, SSH key handling, and declarative UI via GtkBuilder
• Implemented an MVVM architecture with clean separation across viewmodels, widgets, dialogs, git operations, and caching layers
• Achieved a development velocity of ~871 net lines per day and 18.3 commits per active day
• Added multi-line staging and revert support, dynamic branch-aware history visualization, and selectable dialog text

Python, NumPy, Matplotlib · 8,941 LOC · 85 files · 43 classes

Built a complete neural network framework from scratch — no ML libraries — progressing from single perceptrons to MNIST digit classification. A deep-dive into the mathematics and implementation of deep learning fundamentals.

• Implemented a modular neural network framework with 32 classes: protocol-based activation functions (Sigmoid, ReLU, LeakyReLU, Tanh, Softmax), loss functions (Cross-Entropy, fused Softmax-CrossEntropy), and a full training pipeline
• Built 3 optimizers from scratch (SGD, Momentum, Adam) with gradient processing pipeline support (clipping, normalization, noise injection, weight decay)
• Designed a dual-format serialization system (JSON for readability, NPZ for performance) with auto-detection
• Progressed through a structured curriculum: perceptrons and logic gates (day 1) to backpropagation and XOR (day 2) to MNIST classification with 60,000 training samples (day 3)
• Applied numerical stability techniques throughout: gradient clipping, softmax max-subtraction, sigmoid clamping
• Wrote extensive documentation including guides on hyperparameter spaces, optimization strategies, and model format comparisons

C# / .NET 9 / Blazor Server, LiteDB, BCrypt · 2,226 LOC · 32 components · 8 commits

Built a structured Blazor Server application over a 10-day learning sprint, covering the full spectrum of modern web application patterns.

• Implemented 32 Razor components organized across pages, shared components, and layouts with scoped CSS
• Built a complete authentication & authorization system with cookie-based login, bcrypt password hashing, role-based access, and custom authorization policies
• Developed a user management CRUD system with 3 interchangeable repository implementations (File, JSON, LiteDB) — demonstrating the repository pattern and dependency injection
• Created reusable infrastructure: dialog/modal system, toolbar components, form validation with custom attributes, and multiple layout templates
• Covered Blazor fundamentals through authentication in a structured day-by-day learning progression

Astro 5, Tailwind CSS 4, PHP, MySQL, PHPMailer · 14,991 LOC · 51 files

Designed, built, and deployed a professional services marketing website with a full contact management backend — from concept to production on IONOS hosting.

• Built a 3-page marketing site (Home, Services, Contact) using Astro 5 for static site generation with a custom Tailwind CSS theme
• Developed a PHP backend with contact form processing, MySQL storage, and email delivery via PHPMailer/SMTP
• Created an admin dashboard with session-based authentication, submission management, and state transition workflows
• Implemented security best practices: PDO prepared statements, XSS output encoding, input validation, bcrypt password hashing, state whitelist validation
• Engineered an incremental deployment pipeline (deploy.sh) that compares builds byte-by-byte and uploads only changed files via SFTP