Jake Estrada portrait
Jake Estrada
Fullstack Engineer (C#/.NET)

About

/* Jake Estrada Software Engineer — C# / .NET, Full-Stack, Applied ML I'm a 33-year-old software engineer with a background in logistics and construction operations. Eight years at UPS supervising high-volume workflows, then several more in construction ops managing jobs, schedules, and the kind of breakdowns that have immediate consequences. I got tired of patching broken processes and started building the tools to fix them. While working full time and raising a family, I completed my CS degree and shipped production software that runs in real businesses today. A full ERP replacing whiteboards and spreadsheets at a construction company. A multi-tenant financial platform with live bank sync and automated transaction processing. Systems I designed, built, deployed, and maintain. My focus is backend architecture: API design, data modeling, authentication, and real-time systems on ASP.NET Core and C#. I own the full stack when the work calls for it. I build with operational pressure in mind because I have been on the floor when things go wrong. Looking for a role where the problems are hard and the software actually matters. */

const location = 'Lake Forest';

Education
B.S. Computer Science
California State University, Fullerton
A.A. Mathematics
Saddleback College

Skills

$ cat core-languages.txt
  • C#
  • TypeScript / JavaScript
  • Python
  • SQL
  • C / C++
$ cat backend-&-frameworks.txt
  • ASP.NET Core
  • Entity Framework Core
  • Node.js / Express
  • REST APIs
  • Flask
$ cat frontend.txt
  • React
  • Tailwind CSS
  • Socket.IO
$ cat databases.txt
  • PostgreSQL
  • MongoDB
  • SQLite
$ cat auth-&-security.txt
  • JWT
  • RBAC
  • OAuth flows
  • Swagger / OpenAPI
$ cat cloud-&-devops.txt
  • Docker
  • AWS S3
  • Azure
  • Vercel
  • Render
  • Linux
$ cat integrations.txt
  • Plaid
  • Stripe
  • Twilio
  • Google Calendar API
$ cat ai-/-ml.txt
  • Hugging Face Transformers
  • RAG pipelines
  • LoRA fine-tuning
  • Gradient Boosting
  • Pandas

Projects

$ cd projects/finantrac

Finantrac — Financial Operations Platform

Multi-tenant financial operations platform on ASP.NET Core and PostgreSQL with Plaid bank sync, reconciliation workflows, and ML-assisted transaction categorization.

Full-StackC#.NETFinTechMulti-TenantProduction System
Finantrac — Financial Operations Platform
$ cd projects/paarth

Paarth — ERP | Job Management, Scheduling & Team Coordination

Production ERP used daily by a construction business for jobs, scheduling, and team coordination — replatformed from Node.js to ASP.NET Core and C# without disrupting live operations.

Full-StackC#.NETERPOperationsProduction System
Paarth — ERP | Job Management, Scheduling & Team Coordination
$ cd projects/shopview-kiosk

ShopView Kiosk — Radar-Driven Real-Time Operations Display

A motion-aware wall display that replaces a shop dry-erase calendar with live scheduling and pipeline state from Paarth. Radar wakes the screen; Socket.IO keeps the UI in sync with the backend with no manual refresh.

HardwareIoTKioskReal-TimePaarth
ShopView Kiosk — Radar-Driven Real-Time Operations Display
$ cd projects/punchtrack

PunchTrack — Time & Activity Tracking System

Time-tracking system for employees to clock in/out and log receipts and mileage. Started as a Raspberry Pi prototype with RFID authentication, later redesigned as a scalable web application.

Web ApplicationHardware IntegrationTime Tracking
PunchTrack — Time & Activity Tracking System
$ cd projects/lightwall

Lightwall — Interactive AI Art Installation

Embedded engineering role on an interactive light and motion installation exhibited in a museum. Programmed Arduino-based controllers for stepper motors and radar sensors.

Embedded SystemsHardwareC Programming
Lightwall — Interactive AI Art Installation
$ cd projects/nlp-transformer

Transformer & LLM Systems — NLP and RAG Pipeline (School)

Academic project at Cal State Fullerton — transformer models for classification, summarization, and QA; RAG pipeline and LoRA fine-tuning on Energy & Gas news articles.

School ProjectMachine LearningNLPPyTorchLLM Fine-TuningRAG
Transformer & LLM Systems — NLP and RAG Pipeline (School)
$ cd projects/ml-classification-clustering

Sales & Economic Impact Analysis — ML Classification (School)

Academic ML and data science project at Cal State Fullerton — classification and regression on sales/estimate data to analyze geographic demand and macroeconomic drivers.

School ProjectData ScienceMachine LearningGeospatial Analysis
$ cd projects/nanohub

NanoHub — E-Commerce Platform (School Capstone)

Senior capstone school project at Cal State Fullerton — full-stack e-commerce with scraped product data, admin dashboard, and Stripe payment integration.

School ProjectFull-StackE-CommerceCapstone