Collin DeSoto
Graniteville,SC
Summary
Experienced Backend Engineer with 7+ years in developing and scaling payroll and financial systems. Expertise in Node.js API development, DB2 financial workflows, and ensuring data integrity in multi-tenant environments. Proven skills in modernizing architectures, enhancing query performance, and implementing concurrency controls for secure financial transactions.
Overview
15
15
years of professional experience
Work History
Senior Web Developer / Project Lead
SONIC WEB SYSTEMS
01.2016 - Current
- Led backend architecture and long-term ownership of a multi-tenant payroll platform serving enterprise clients.
- Design and maintain REST APIs using Node.js and TypeScript for employee management, payroll workflows, and tax calculations (FUTA, SUTA, Tip Credit).
- Implemented concurrency locking mechanisms to prevent payroll conflicts and ensure financial data integrity.
- Optimized complex DB2 queries for year-to-date reporting and reconciliation, improving performance and reducing processing delays.
- Integrated direct deposit and paycard services via secure SOAP and third-party API integrations.
- Diagnosed and resolved production payroll discrepancies and financial edge cases in live financial systems.
Project Manager / Web Developer
BLACK NOTE, INC.
01.2013 - 02.2016
- Managed delivery of large-scale website feature releases across cross-functional teams.
- Improved collaboration between business stakeholders and engineering vendors.
- Refactored backend systems for performance optimization and integrated MongoDB for flexible data storage.
Web Development Lead
WRITING THE WEB, LLC
03.2011 - 06.2013
- Built custom frontend and backend systems for diverse clients.
- Conducted code reviews and refactored legacy logic to improve maintainability and performance.
- Maintained platform stability during company merger transition.
Skills
Backend & APIs:
Nodejs, TypeScript, Express, REST API Design, SOAP Integrations, Concurrency Controls, Financial Workflow Logic
Databases:
DB2, MySQL, MongoDB, SQL Optimization, Data Integrity & Validation
Engineering Practices:
CI/CD, Git, Code Reviews, Incident Resolution, Project Ownership
Frontend (Supporting):
React
Timeline
Senior Web Developer / Project Lead
SONIC WEB SYSTEMS
01.2016 - Current
Project Manager / Web Developer
BLACK NOTE, INC.
01.2013 - 02.2016
Web Development Lead
WRITING THE WEB, LLC
03.2011 - 06.2013