Contact
- Name
- Sean Hanna
- Phone
- 1 513 255 5383
- hannasm@gmail.com
- Web
- http://rsndev.com/resume
- Github
- https://github.com/hannasm
As an accomplished software developer, I'm all about delivering next-level solutions that are both efficient and high-performing. From microservices to software component design, I'm your go-to expert for building cutting-edge technology that integrates seamlessly with front-end UI and real-time monitoring and visualization tools. I lead by example and mentor my team to create simple, correct, and beautiful code that drives business growth and success. I excel at mentoring and leading cross-functional teams to achieve shared goals, and am comfortable working with a wide range of technologies including C#, SQL, Powershell, Windows Server and any others needed to deliver innovative solutions.
Skills
- C#
- Powershell
- SQL
- Javascript
- LINQ
- HTML
- Dotnet Core
- REST
- Domain Drive Design (DDD)
- ASP.NET
- CSS
- C/C++
- VB
- Java
- PHP
- VueJS
- Typescript
- Windows
- Linux
- AWS
- Azure
- AngularJS
- Git
- TFS
- Soap
- Json
- Android
- VLANs
- VPN Security
- DNS
- DHCP
- MS SQL
- Oracle
- MySQL
- Postgres
- Web Crypto
- Mutation Observer
- Intersection Observer
- Responsive Design
- Docker
- Redis
- MQTT
Experience
November 2024
CF-L1 - Crossfit Level 1 Trainer
- Hands on training and successful completion of written test
October 2010 - present
Lead Dotnet Developer @ Epsilon
- Migrated 1,000,000+ line codebase from .NET Framework to .NET core
- Mentored and provided technical guidance to team of 20, including 3-5 software developers
- Implemented major features, technologies, protocols, etc... per client needs
- Maintainer of build automation and infrastrucuture management
- High performance clustered web services
- SOAP and REST / JSON based microservices
- Designed, built, and maintained custom, high performance, business rules engine
- Front-end ui developer, supporting high visibility websites
- Integration with realtime monitoring and visualization tools
- Backend development in C# / Powershell / Windows Server / Oracle SQL / and other technologies as needed
2015 - present
Github Side Projects
- DemandJS - advanced web content lazy loader
- FloodgateDotNet - high perf event throttling
- MasonFlexJS - high perf masonry layouts for web
- Charades Arcade - AI Generated Version of Charades
- rsndev.com#resume - this resume published and printed from web
October 2013
Padi Open Water Diver Certification
- Written test and open water skills evaluation
March 2009 - August 2010
Dotnet Developer @ Standard Register
- Full stack ASP.NET for collection of b2b services
- Integration with exstream for personalized web-to-print media
- C# / .NET / WEB
February 2009 - March 2009
Programming Competition @ CSA Group LLC
- grand prize winner
- High performance FIX over FAST parser
- C++, XML parser
December 2008
B.S. Computer Science @ Miami University
- Compiler Theory
- Math Electives
May 2006 - August 2006
Undergraduate Summer Scholars @ Miami University
- collision detection research grant
- overlap and penetration testing between 2D polygons
- performance analysis, documentation and source code
- linear algebra and geometric math
May 2003 - August 2003
Software Tools Intern @ Intelligrated LLC
- Internal tools development for software engineering group
- Full waterfall process experience
- requirements, design, development, and documentation
- C# / .NET / Winforms
August 2000 - May 2002
Cisco Networking Academy
- High school elective - cisco CCNA curriculum
June 1998 - October 1998
Visual Fox Pro Developer @ Paradigm Inc
- Tools development in Visual Fox Pro
- Automated data sanitization of millions of records