Mississauga, Ontario
437-972-5792 | crachwal@uoguelph.ca | charlesrachwal.com
• Dean's Honours List recipient in Winter 24, Fall 24, Winter 25
• Relevant Coursework: Object-Oriented Programming, Systems Analysis, Digital System Design, Large-Scale Software Architecture
• Consulted with Archr Inc. during company outreach, identified that ARCHR Inc.'s manual invoice processing created a 48-hour bottleneck handling 100+ monthly invoices
• Engineered automated solution using n8n and QuickBooks API, delivering 85% reduction in manual processing time and scaling capacity to handle 100+ monthly invoices with 99.8% accuracy
• Delivered immediate ROI, eliminating 15+ hours weekly overhead and accelerating processing cycle time by 99%
• Recognized that manual course scheduling consumed 1+ hours each semester with high risk of time conflicts
• Developed a full-stack application that automates the generation of conflict-free university course schedules
• Initially built with Java, then migrated and enhanced with JavaScript for web deployment on my website
• Improved schedule creation time by 97-98%, reducing the process from an hour to just 1-2 minutes
• Architected unit testing framework for uniFide WebApp, increasing code coverage to 90% and reducing production defects across 3 development teams
• Researched and documented AI integration opportunities across SDLC, presenting actionable recommendations to enhance development workflows
• Experimented with emerging technologies and tools to assess potential benefits for the uniFide Platform
• Supported development towards new enhancements and report generation features for the uniFide Platform
• Identified inconsistent quoting practices across 150+ jobs leading to margin risks, developed Excel pricing optimization tool reducing turnaround times by 60%
• Recognized 15-minute retrieval delays for past orders, built web-based job management system handling 1000+ jobs, cutting search time to 30 seconds
• Discovered time-intensive manual PDF conversion process, automated 6800+ SolidWorks drawings saving 120 labor hours ($2,100) and accelerating delivery
• Founded and scaled a window-cleaning company to 50+ recurring residential clients within 12 months
• Developed comprehensive Excel spreadsheets to track all business metrics, track and analyze all company operations, and manage inventory, resulting in 15% reduction in supply costs
• Achieved a 22% conversion rate from door-to-door prospects with a designed sales script that improved closing rates by 30% when expanded to staff