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Diego SalazarFull-Stack Architect
2022Full StackActive

PrintQuoteNow

A comprehensive enterprise print management platform powered by a research-driven gang-run optimization algorithm. The system generates instant, production-ready quotes by positioning multiple items on a single sheet, minimizing material waste and machine time. Developed through extensive study of academic optimization models and deep immersion into real-world printing processes, the platform replaced the client’s expensive legacy quoting system while enabling long-term scalability and operational control.

ReactReduxPHPYii FrameworkMySQLREST APIAWS EC2AWS LambdaAWS RDSAWS S3AWS Route 53AWS Load BalancerQuickBooks APICustom AlgorithmEnterprise ApplicationAWS

Project Overview

Understanding the Project

The Goal

Build a scalable print management system capable of generating instant, highly optimized print quotes while managing the full production lifecycle, invoicing, and reporting; while enabling the client to replace an expensive, outdated legacy quoting system with a modern in-house platform.

The Challenge

Design and implement a mathematically gang-run optimization algorithm capable of handling real-world printing constraints such as sheet sizes, bleed margins, grain direction, machine limitations, and cost structures. The solution required translating academic bin-packing and cutting-stock research into a production-grade system tailored to the printing industry.

My Role

Lead Full-Stack Architect responsible for system design, research and implementation of a custom geometric optimization algorithm, API architecture, AWS infrastructure, and long-term platform evolution. Conducted deep domain research, studied industrial cost modeling methodologies, and collaborated directly with printing specialists through on-site visits to ensure algorithmic accuracy and production alignment.

Role

Lead Full-Stack Developer

Timeline

2022

Platform

Enterprise web application for printing companies

Team

Team (3)

Screenshots

Visual Showcase

Advanced quote builder powered by the gang-run optimization algorithm.

Advanced quote builder powered by the gang-run optimization algorithm.

What I Built

  • Custom research-based gang-run optimization engine for geometric placement of multiple print jobs on a single sheet.
  • Constraint-aware layout system incorporating bleed, margins, grain direction, sheet formats, and machine capabilities.
  • Instant quote engine calculating material consumption, machine time, finishing operations, and overhead costs.
  • REST API supporting quoting, production workflows, and external integrations.
  • Invoice module integrated with QuickBooks API for automated accounting synchronization.
  • Scalable AWS infrastructure ensuring high availability and long-term growth.

Tech Stack

Frontend

ReactReduxHTMLCSS

Backend

PHPYii Framework

Database

MySQL

Cloud & Infrastructure

AWS EC2AWS LambdaAWS RDSAWS S3AWS Route 53AWS Load Balancer

Integrations

QuickBooks APIREST API

Architecture Design Decisions

These decisions were intentional to ensure the site feels professional, calm, and easy to navigate:

  • Research-driven gang-run optimization engine inspired by bin-packing and cutting-stock models, adapted to real-world printing constraints.
  • Incorporation of industrial constraints such as bleed, margins, grain direction, sheet formats, and machine limitations.
  • Clear separation between optimization engine, pricing logic, production workflows, and accounting integrations.
  • Modular architecture enabling continuous feature expansion without disrupting existing operations.
  • Iterative validation with on-site printing specialists to ensure algorithmic outputs matched real production workflows.
  • Use of AWS managed services to ensure scalability, fault tolerance, and long-term reliability.

Results & Learnings

The platform enabled instant, production-accurate quoting through a custom optimization engine, fully replacing a costly legacy system. This eliminated dependency on third-party software, improved long-term maintainability, and provided the client with full ownership of their pricing and production logic. Integrated QuickBooks synchronization streamlined invoicing and reporting, aligning financial and production workflows into a single scalable system.