Alexius SethSystems & Software Engineer

Specializing in Modern Web Applications, Desktop Systems, and Database Engineering. Architecting reliable low-level software and high-throughput web applications.

Core Runtime & Toolchain

C#.NET 8CJavaPythonSQL ServerNext.js

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01 // REPOSITORY_INDEX

Featured Systems Projects

Architectural breakdowns of production web systems, desktop runtimes, and local-first ledgers.

SYS_PRJ // 01

SRC

AI-CAMSLead Developer

AI-Assisted Centralized Assessment Monitoring System

▸Win32 low-level keyboard lockdown shell preventing unauthorized task switching
▸On-device computer vision pipeline using OpenCvSharp4 & Dlib 68-point gaze telemetry
▸Multi-language isolated compiler sandbox (GCC, JDK, Python) with EF Core 8 & SQL Server

C#.NET 8OpenCvSharp4SQL Server

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SYS_PRJ // 02

SRC

Talaan (PWA)

Local-First Double-Entry Ledger & Inventory Management PWA

▸Offline-first local persistence architecture powered by Dexie.js (IndexedDB)
▸Zero-sum double-entry accounting engine storing currency in integer centavos
▸Background transactional outbox sync to Neon PostgreSQL with native SIM SMS receipts

PWADexie.jsNeon PostgreSQLTypeScript

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SYS_PRJ // 03

LIVE SRC

CaseKo

Supreme Court Case Digest & Legal Research System

▸PostgreSQL weighted Full-Text Search (FTS) indexed with GIN
▸Next.js App Router streaming architecture with RFC 4180 CSV bulk ingest
▸Supabase Row-Level Security (RLS) and custom legal brief print stylesheets

Next.jsPostgreSQL FTSSupabase RLSTypeScript

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SYS_PRJ // 04

LIVE SRC

Pomodoro Web App

Personalized Productivity & Focus Timer Web Application

▸High-precision timer engine with background tab drift compensation
▸Customizable work-to-rest cycle telemetry and task sequence state machine
▸Persistent session logging with browser storage, deployed globally on Vercel Edge

Next.jsReactTypeScriptTailwind CSS

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02 // CAPABILITIES