Mike Stec
Highlands Ranch
Summary
Senior Full Stack Software Engineer with extensive experience driving large-scale enterprise projects across various industries, including financial, insurance, e-commerce, and SAAS. Skilled in cloud computing (Azure, AWS), .NET technologies, and scalable software architecture. Adept at database design, API integrations, cloud-native architecture.
Overview
17
17
years of professional experience
Work History
Senior Software Engineer
PoolCorp
2025.05 - Current
- Develop scalable cloud-native event-driven architectures and microservices on Azure
- Architect REST API solutions that enable seamless connectivity between internal and external systems
- Design and implement integration strategies for ecommerce customers
- Recommended solutions aligning with business needs and optimizing system performance.
- Mentored junior developers on C# .NET 9 practices and cloud-native design patterns, enhancing team skill set.
- Wholesale Distributor
Senior Full Stack Software Engineer
GCM Grosvenor
2021.07 - 2025.03
- Architected and developed cutting-edge financial applications using Azure Functions, AWS, .NET Core, C#, and SQL Server, enhancing functionality for multi-billion-dollar asset management operations
- Engineered high-performance REST APIs, microservices, and event-driven systems, streamlining real-time data processing
- Integrated third-party APIs to automate data exchange, enhancing operational efficiency
- Developed front-end solutions using ASP.Net MVC, Angular 18, Knockout, Bootstrap, SignalR, and TypeScript for improved user experience
- Financial, Asset Management
Senior Full Stack Software Engineer
Jewelers Mutual
2020.12 - 2021.06
- Designed and implemented REST APIs using .Net Core, Azure, APIM, and SQL Server to ensure high availability and scalability for client applications
- Developed dynamic front-end applications with Vue.js, Bootstrap, and TypeScript to improve user experience and engagement
- Integrated third-party APIs to automate data exchange, enhancing operational efficiency across workflows
- Insurance
Senior Full Stack Software Engineer
Navient
2020.05 - 2020.11
- Migrated legacy student loan systems from mainframe to Azure using .NET Core and SQL Server, enhancing system reliability and lowering infrastructure costs
- Optimized database queries to improve data retrieval speed, enhancing overall application responsiveness
- Financial, Student Loans
Senior Full Stack Software Engineer
Unit Here Health
Aurora
2019.09 - 2020.03
- Designed and developed secure, scalable REST APIs for membership, payment processing, reporting, and real-time notifications, enhancing user experience and system reliability
- Implemented high-performance data access layers, significantly reducing query execution times and streamlining data retrieval
- Developed modern, responsive web applications using ASP.Net MVC, C#, JQuery, Bootstrap, SQL Server, improving usability and engagement
- Health Insurance
Senior Full Stack Software Engineer
Instec
Naperville
2019.02 - 2019.09
- Designed and developed REST APIs for insurance rating platform, enhancing application integration and user experience using Azure, C#, .Net Core
- Optimized database queries with Entity Framework and SQL Server, improving data retrieval speed and overall application performance
- Insurance, SAAS
Senior Full Stack Software Engineer
Lions Club International
Oak Brook
2018.03 - 2019.01
- Led front-end and back-end development using ASP.Net MVC, Bootstrap, JQuery, C#, SQL Server
- Designed and developed secure, scalable REST APIs supporting a global membership platform used by 1.4 million users
- Received recognition from IT leadership for strong performance, leading to involvement in additional projects
Senior Full Stack Software Engineer
Gladson (Syndigo)
Chicago
2017.08 - 2018.02
- Implemented API-driven architecture using .NET, C#, MongoDB, Web API, Azure, SQL Server, Swagger, and Dapper, increasing system scalability and maintainability
- Revamped legacy digital asset management systems to modern, cloud-based architectures, improving data processing capabilities
- Developed web applications using ASP.Net MVC, JQuery, Bootstrap, enhancing user experience and interface design
- Contributed to SAAS development, streamlining deployment processes and improving application accessibility
Senior Full Stack Software Engineer
Jones Lang LaSalle
Chicago
2014.07 - 2016.08
- Implemented architectural improvements and major enhancements for a property management system that is used by thousands of users across the globe daily to manage facilities and service requests
- Developed web applications using ASP.Net MVC, JQuery, C#, .Net, SQL Server, enhancing user experience and functionality for property management
- Contributed to property management SAAS solutions, supporting operational needs and improving client service
Senior Full Stack Software Engineer
RedBox
Oak Brook
2012.04 - 2013.12
- Engineered large-scale enterprise systems for RedBox's media business, enhancing payment processing and kiosk management utilizing Azure, C#, .NET, ASP.Net, SQL Server
- Managed 2-5m daily rentals, supporting a network of over 40k rental kiosks
- Processed 200-500 transactions per second, ensuring system reliability and performance
- ECommerce
Senior Full Stack Software Engineer
BridgePoint Technologies
Oak Brook
2011.04 - 2012.04
- Developed financial, insurance, and healthcare solutions using C#, .Net, ASP.Net, SQL Server to address client needs
- Provided consulting services to enhance client project outcomes and streamline development processes
- Collaborated with cross-functional teams to gather requirements and implement solutions.
Senior Full Stack Software Engineer
Citadel Group
Chicago
2009.06 - 2011.03
- Developed back-office financial applications and investor reporting systems using .NET, C#, ASP.Net, WPF, SQL Server, MySQL to enhance data accuracy and reporting capabilities.
- Financial, Hedge Fund
- Developed responsive web applications using JavaScript frameworks and RESTful APIs.
- Collaborated with cross-functional teams to design scalable software solutions.
- Implemented automated testing protocols to enhance code reliability and performance.
Education
Master of Science - Computer Science
DePaul University
Chicago, ILSkills
- REST API
- Microservices
- Serverless
- Design Patterns
- DDD
- Clean
- SOLID
- AWS
- Azure
- C#
- SQL
- JavaScript
- NET Core 9
- Entity Framework
- Dapper
- ORM Lite
- Auto Mapper
- NServiceBus
- GraphQL
- SQL Server
- MySQL
- PostgreSQL
- Oracle
- Cosmos DB
- MongoDB
- ASPNet MVC
- Pages
- Angular
- Blazor
- React
- HTML
- CSS
- BootStrap
- JQuery
- SignalR
- NUnit
- XUnit
- TDD
- SpecFlow
- Selenium
- Moq
- Postman
- Power BI
- Jira
- Confluence
- Service Bus Explorer
- GITHUB
- CI/CD
- Agile/Scrum
- Architectural excellence
- Best coding practices
- Technical standards
- Mentorship
- Full-stack
- Code reviews
- Design reviews
- Troubleshooting
Timeline
Senior Software Engineer
PoolCorp
2025.05 - Current
Senior Full Stack Software Engineer
GCM Grosvenor
2021.07 - 2025.03
Senior Full Stack Software Engineer
Jewelers Mutual
2020.12 - 2021.06
Senior Full Stack Software Engineer
Navient
2020.05 - 2020.11
Senior Full Stack Software Engineer
Unit Here Health
2019.09 - 2020.03
Senior Full Stack Software Engineer
Instec
2019.02 - 2019.09
Senior Full Stack Software Engineer
Lions Club International
2018.03 - 2019.01
Senior Full Stack Software Engineer
Gladson (Syndigo)
2017.08 - 2018.02
Senior Full Stack Software Engineer
Jones Lang LaSalle
2014.07 - 2016.08
Senior Full Stack Software Engineer
RedBox
2012.04 - 2013.12
Senior Full Stack Software Engineer
BridgePoint Technologies
2011.04 - 2012.04
Senior Full Stack Software Engineer
Citadel Group
2009.06 - 2011.03
Master of Science - Computer Science
DePaul University