Fullstack Developer
Resume:
Thomas Mackin III
Software Developer
*.*******@*****.***
SUMMARY
Throughout my career, I have designed and optimized high-performance fullstack systems that power mission-critical applications for pharmaceutical planning, financial technology, and enterprise SaaS. With 15 years of experience in software development- including scalable backend systems, cloud-native architectures, and SaaS platforms- I am eager to contribute my expertise to your team and help drive innovation.
SKILLS
Applications: Microsoft Office Suite, Google Suite, SalesForce
Development Tools: Microsoft NET 6.0/2003, Visual Studio 2005-2022
Languages: C, C++, C#, HTML, JavaScript, Kendo, Angular, ASP.NET, SQL
Other Skills: Onboarding experience, architectural design and
implementation, troubleshooting, cloud development, API/SOAP
Unrelated Skills: Improv, sword fighting, dungeon mastery
EXPERIENCE
StoneX, Chicago, IL- Senior Software Developer
Dec 2022 - Apr 2025
●Upgraded and maintained a major financial broker-dealer firm’s client onboarding software utilizing a fullstack suite, including SQL Management Studio, .NET Framework 4.8.1, C#, Angular 17, SQL, Kafka, Azure tools, Git, TeamCity, Wrangler, Rancher, and Octopus
• Enabled test-driven feedback across multiple platforms for various projects using C#, nUnit, CodeSmells, SonarQube, and Azure Insights
• Orchestrated multiple client-facing projects to Azure DevOps CI/CD, using Kubernetes to automate deployments
• Worked closely with QA for final approvals on code changes, including client-facing websites, a backend data factory, and RESTful API endpoints, all within a JIRA-tracked Agile environment
BigTime Software, Chicago, IL- Developer I
Jan 2022 - Dec 2022
●Expanded the functionality of a robust Professional Services Automation SaaS Azure-hosted platform, tracked with JIRA
• Redesigned product frontends with Angular and CSS
• Enhanced product MVC-modeled backend and REST APIs using C#
• Optimised SQL calls for complicated data sets, reducing retrieval times by 40-60%
LEIDOS, Chicago, IL- Senior Contract Developer
Aug 2021 - Jan 2022
●Upgraded an existing, industrial pharmacy assembly ladder for the Veteran’s Administration, using a combination of C#, C++, and Programmable Logic Controllers
• Translated an existing 32-bit C++ codebase to meet 64-bit C# modernisation standards
The Messina Group, Chicago, IL- Senior Contract Developer
Sep 2020 - May 2021
●Modernised a legacy technology stack for a nationwide dairy marketing trade association.
• Pulled multiple projects into the cloud, including a COVID-tracking system and an internal Service Notification tracker, making heavy use of Microsoft Azure, SQL Management Studio, and Azure Data Studio
HBR Consulting, Chicago, IL- Contract Developer
Feb 2020 - May 2020
●Maintained and streamlined an expenditure tracking platform used by multiple large-scale clients across industries from a contract position, using Azure DevOps and an Agile development approach
• Enhanced platform with Telerik Tools and Kendo, providing faster data access and greater manipulability to our contract dashboards
• Automated customization of various reports per client
• Cut page loading times with SQL optimization by 50% - 80%
Meetings and Events International, Chicago, IL - Software Developer
May 2014 - Feb 2020
●Continued the development of both internal platforms and external client websites, while maintaining legacy software for national pharmaceutical companies
• Utilized a combination of modern-day .NET stack technology, SQL, Access VBA, Frontend Angular, and some MVC with attendant javascript and LINQ
• Spearheaded architecture development from the ground up for key new client
• Onboarded and led a team of new developers, bringing them up to speed with projects, and training them in the use of proprietary software and legacy technology
• Acted as Mergemaster and Buildmaster for bulk of clients
EDUCATION
Ohio Northern University, Ada, OH
June 2007
●Bachelor of Science, Computer Science
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