Hi, I’m Jeff Kessler. I’m a results-driven software developer with 20+ years of experience designing and modernizing software solutions across Windows and cloud environments. I specialize in Microsoft technologies, cloud integration, and legacy system modernization to streamline business processes. I enjoy building reliable, scalable solutions that improve efficiency and digital transformation. I thrive in full-stack development, automation, and system optimization, with a focus on reliability and accuracy. I’m passionate about delivering value through technology and helping teams adapt to evolving requirements through well-architected software and thoughtful DevOps practices.

Jeff Kessler

Hi, I’m Jeff Kessler. I’m a results-driven software developer with 20+ years of experience designing and modernizing software solutions across Windows and cloud environments. I specialize in Microsoft technologies, cloud integration, and legacy system modernization to streamline business processes. I enjoy building reliable, scalable solutions that improve efficiency and digital transformation. I thrive in full-stack development, automation, and system optimization, with a focus on reliability and accuracy. I’m passionate about delivering value through technology and helping teams adapt to evolving requirements through well-architected software and thoughtful DevOps practices.

Available to hire

Hi, I’m Jeff Kessler. I’m a results-driven software developer with 20+ years of experience designing and modernizing software solutions across Windows and cloud environments. I specialize in Microsoft technologies, cloud integration, and legacy system modernization to streamline business processes. I enjoy building reliable, scalable solutions that improve efficiency and digital transformation.

I thrive in full-stack development, automation, and system optimization, with a focus on reliability and accuracy. I’m passionate about delivering value through technology and helping teams adapt to evolving requirements through well-architected software and thoughtful DevOps practices.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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Language

English
Fluent

Work Experience

Software Developer at Sensor Technology Canada
October 1, 2025 - October 1, 2025
Upgraded legacy Windows applications controlling industrial hardware to Docker-based microservices deployed to the cloud, added PostgreSQL access for data retrieval and result storage. Built full-stack web applications using .NET Core, React, and Blazor with REST APIs, designed as cloud-based solutions for onsite industrial equipment. Created a project management interface integrating QuickBooks Online (OAuth) and Titra Time Tracking for consolidated reporting to federal and provincial partners. Updated the company website with a new logo and FedDev wordmark. Leveraged Azure DevOps and Teams Sites to consolidate project assets (User Stories, development/testing/deployment plans, and OAuth renewals guides).
Senior Software Developer – Contract at The Source
March 31, 2023 - March 31, 2023
Modernized legacy POS and inventory management systems, integrating modern technologies while preserving critical business functionality. Led IoT-driven process automation with real-time inventory tracking. Reduced shipment processing time by 90% through an assumed receiving process. Integrated legacy systems with cloud technologies, improving data accessibility and business intelligence capabilities.
Senior Software Developer at Buchanan Associates
November 30, 2008 - November 30, 2008
Designed, developed, and maintained various application improvements to the Point of Sale (POS) used by Army Air Force Exchange Service (AAFES). Developed real-time monitoring applications for AAFES, controlling over-the-counter medicine distribution in combat zones.
Senior Software Design Engineer at Verifone Canada
February 28, 2007 - February 28, 2007
Developed and optimized embedded payment applications for US Moneris Solutions, integrating secure credit and debit transactions. Collaborated with cross-functional teams to enhance POS software with real-time transaction monitoring.
Client Care Representative at Millennium Process Group
January 1, 2024 - November 19, 2025
Client support role, maintaining client satisfaction.
Customer Service Agent/Supervisor at Gatestone & Co. Inc.
December 31, 2016 - December 31, 2016
Promoted to supervisor within 3 weeks, overseeing 15+ agents.

Education

Honours Enterprise Software Development Post-Graduate Certificate at Humber College Institute of Technology & Advanced Learning
January 11, 2030 - November 19, 2025
Computer Science Technology Co-Op Diploma at Sheridan Institute of Technology and Advanced Learning
January 11, 2030 - November 19, 2025

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Manufacturing