Karn Ratana
Stack Overflow Developer Story

Accomplished Software Architect with managerial background. Spent many years working with distributed teams. Focused on delivering quality products on schedule, utilizing the best technologies and practices, and helping team members excel. Experienced with small startup cultures and large corporation processes, including transitions through acquisitions.

Highlights

• Provided architectural designs and technical documentations
• Full Stack Developer
• C#, JavaScript, SQL Server, Redis, RESTful APIs
• AWS, Terraform, Git, Jenkins
• Managed remote teams including hiring, mentoring, and evaluating team members
• Collaborated with Product Managers on short term and long term planning
• Led Scaled Agile process

Experience

2018-02 – present
Lead Technical Architect
Xtime, a Cox Automotive company

• .NET, C#, SignalR, Hangfire, SQL Server, Redis, AWS, JavaScript/jQuery/AngularJS/ReactJS
• Designed and architected projects
  • Migration to AWS
  • Single Sign-On Integration
  • Cross platforms services via APIs and message queues
• Provided documentations and diagrams
• Set up and maintained deployment pipeline
• Improve system stability and reliability

2016-02 to 2018-02
Software Engineering Mananger
Xtime, a Cox Automotive company

• .NET, C#, SignalR, Hangfire, SQL Server, Redis, AWS, JavaScript/jQuery/AngularJS/ReactJS
• Managed a distributed engineering team
• Guided the team through another acquisition
• Collaborated with product managers
• Scaled up the applications
• Consolidated DMS integrations
• Moved business logic from database layer into application layer

2014-07 to 2016-02
Software Engineering Manager
Dealertrack Technologies (Acquired by Cox Automotive)

• .NET, C#, SignalR, SQL Server, Redis, AWS S3, JavaScript/jQuery/AngularJS
• Managed a distributed engineering team
• Guided the team through an acquisition
• Improved system monitoring
• Adopted Scaled Agile process

2012-09 to 2014-07
Chief Technology Officer
ASR Pro (Acquired by Dealertrack)

• .NET, C#, SignalR, SQL Server, Redis, AWS S3, JavaScript/jQuery/AngularJS
• Built a remote-first culture
• Assembled and managed a distributed engineering team
• Designed and architected projects
• Supervised outsourced engineering teams and contractors

2008-11 to 2012-09
Lead Software Engineer
AutoLoop

• .NET, C#, SQL Server, JavaScript/jQuery, HTML, CSS
• Developed a digital multipoint inspection and service tracking software for auto dealerships
• Created RESTful and SOAP APIs
• Integrated with third party services

2007-01 to 2008-05
Software Engineer
Super Stock

• .NET, C#, VB, SQL Server, JavaScript, HTML, CSS
• Maintained and improved stock photography ecommerce site
• Updated web application from classic ASP to ASP .NET

2005-05 to 2007-01
Web Developer
Clayton Kendall

• PHP, MySQL, JavaScript, HTML, CSS
• Maintained and improved branding ecommerce site
• Developed a framework for branding customizations
• Developed integrations with third party accounting software

Education

MS in Computer Engineering
2003-2005 University of Florida

BS in Computer Science
1999-2003 University of Florida