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Ray J. Chen, US citizen 

Flexibel Full-Stack Solution Programmer or Developer


one of the 5000 .NET Application charter members in the world

Home: ***** Via Cereza, Mission Viejo, CA 92691

Email: rayJchen2000@gmail.com



  • US citizen with 19 years of productive (industrial) experience   
  • Fifteen (16) IT certificates in Microsoft Azure Cloud, Python, C#, ASP.NET with Ajax, SQL Server with T-SQL, Web Service with Soap, WebForm Application, Web Application, Microsoft Dynamic CRM, C++, XML, MFC, Java, JavaScript, HTML 5, CSS,  JQuery, Bootstrap, and so on, …
  • Very flexible full-stack developer for back-end/front-end/middle-tier, huge/regular, new/existing projects; or solving very-tough/old/new bugs
  • You can click any underlined clause below to see details/evidence
  • I am NOT looking for a job now, please do NOT call/email me. Thanks

Fifteen (16) IT Programming Certificates:  

Selected skills (years):

  • Microsoft skills:

.NET Framework 1.1-4.7 (16y), C# (16y), VC++ (10y), MFC (4y), VB.NET (3y), ASP.NET(16y), Web Service (6y), SQL Server (12y), T-SQL (9y), Entity Frameworks (8y), ADO.NET (9y), Ajax (6y), LINQ (8y), WinForms (7y), TFS (10y), SSRS(2y), SSIS(1y), WCF (3y), ASP.NET MVC (4y), ASP.NET Web API 2 (2y), WPF(2y), WF (2y), OpenXML (3y), Microsoft Dynamic CRM & SDK (2y), PowerShell (1y), Silverlight (1y), Telerik(1y), Azure Cloud-computing(1y), Visual Studio (12y), IIS (10y), COM (3Y), DCOM (1y), and so on;

  • Scripts-related skills:

HTML (14y), XML (12y), JavaScript (8y), jQuery (6y), CSS (8y), Bootstrap (2y), JSON (6y), Ajax (6y), Angular JS (3y), PERL (2y), Python (3y), XSLT (2y), LESS (1y), and so on;

  • Version Controller-related skills:

TFS (10y), SVN (2y), VSS (2y), Clear Case (1y), GIT (2y), GitHub (1y), and so on;

  • Other skills:

Design Patterns (4y), IoC (4y), Reports (5y), Agile/Scrum (8y), Linux (1y), Unix (3y), Algorithms (20y), Agile/Scrum (8y), SQL (12y), C (10y), C++ (12y), ERP (9y), eCommerce(3y), Oracle (4y), SDLC (18y), JAVA (2y), Mobile Application (1y), Cloud-computing (1y), Machine Learning & Pattern Recognition (8y), PCI (1y), n-tier systems (9y), and so on

Main experience:

2/4/2019-, Data Engineer, Providence Health Searvice, Anaheim, CA

2016-2018, C#.NET Software Developer, BeyondTrust, Aliso Viejo, CA 

  • Developed validation software for all available Vulnerability Audit Backend Product use cases (more than 46000 cases) with exact error positions and detail reasons (thousands).
    • Used C# .NET (mainly based on Wiki document or C/C++ source code, also referred to earlier Python code)
    • Reviewed, enhanced, learned, and understood product-environment-related technologies such as Regular Expressions, SQL Servers, Python, Entity Frameworks, related PowerShell, ASP.NET MVC 5.2, ASP.NET API 2, and so on.
  • Finished all eleven (11) Vulnerability OpenXML Word Reports (can be up to thousands of pages): PCI Compliance, Summary, Vulnerability Export, Regulatory Compliance, Discovery, Non-Compliant, IAVA, Remediation, Access, and so on. 
    • Reviewed and enhanced product-related technologies with latest. Took and passed 6 WWW certificate exams.

2014-2015, C#.NET Consultant, FujiTec America, Mason, OH 

2013-2014, Senior C#.NET Developer, Cincom Systems, Cincinnati, OH

  • Obtained MCP for Dynamic CRM 2011 Installation & Deployment in 2 weeks (3/2013)

  • Simplified and improved performance significantly for several projects. For example, I simplified 75 complicated workflow conditions to 6 simpler conditions.

  • Wrote discount software, pricing engine, custom revise software, reusable jQuery custom controller, CAD mapping, and so on

2011-2012, C#.NET Consultant, Eli Lilly & Company , Indianapolis, IN

  • Sped up a wiki page builder application (23226 genes) by more than 90%

  • Transferred Oracle database data to SQL Server database

2005-2011, C#.NET Instructor, Software School of Xiamen University , China  

  • Was the instructor for all C# ASP.NET projects and courses at the school for the five full years (2005-2010)
  • Obtained high evaluation from the students
  • Taught compiler technology and projects (2006-2010)
  • Taught UX GUI (2005-2007)
  • Taught parallel and distributed network algorithms/projects (2007-2010)
  • Designed & programmed the world fastest permutation software

2003-2004, Chip Design Data Mining Consultant, IBM Data Prep: 3D optical proximity correction process, VT

  • Added C/C++/PERL/MACRO call features (tools/library) to reduce up to 99% of Chip Design 3D optical proximity correction shape layout data file memory (gigabytes), and to make the data files neater.

2001-2002, Software Developer, Boston Instruments, Waltham, MA

  • Built up a 3D object model from a set of 2D images.

1992--2000, Senior Software Engineer, Speery (foemerly Pandrol Jackson Tech, Headquarter Charter plc, UK), Danbury, CT USA

  • Designed and programmed the first real-time 3D pattern recognition (machine learning) in the world for rail flaw ultrasonic detection systems (the data was megabytes/sec at that time). The software has tested more than 65% of US railroads and 100% of Chinese railroads since 1995, product

  • Organized ultrasonic data input into 24 parallel multithreads to recognize 3D flaws; the Microsoft C/VC++ software was embedded into flash memery

  •  Receive the (company) President Award for the 3D pattern recognition software

1990-1992, Data Mining Software Developer, Argent Software, Torrington, CT

  • Programmed a data compression product by optimizing two (2) algorithms in “Timothy C. Bell, John G. Cleary, Ian H. Witten, Text Compression, ISBM 0-13-911991-4”

1982-1988, Instructor, Xiamen Commercial School, China

  • Authored (editor-in-chief ) a database textbook in 1988
  • Taught Database for 6 years



  1. Swimming, a few miles a week if not busy

  2. Software coding (solutions / debugging), I enjoy it as playing games

  3. Ping-pong

  4. Hiking

  5. Playing chess (I can play chess without seeing the chess board)

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