Sheldon Linker, ISAM Developer in Irvine, CA, United States
Sheldon Linker

ISAM Developer in Irvine, CA, United States

Member since June 14, 2020
Dr. Linker has been doing consulting/contract programming (and other job functions) for decades. He has specialized in database work since 1978. His doctoral work involved AI and knowledge bases. He is also adept at programming servers, client systems, desktop systems, embedded systems, and a number of other types of systems. He has served in a database, programming, business analyst, and project management capacity. He currently teaches the latter two at the University of Maryland online.
Sheldon is now available for hire




Irvine, CA, United States



Preferred Environment

SQL, Mainframes, Unix, Linux, C++, Java, Windows, .Net, WIN32, Embedded

The most amazing...

...project I've worked on was the Strategic Defense Initiative; I optimized a message-passing system, allowing throughput to enable taking out an incoming ICBM.


  • Adjunct Professor

    2016 - PRESENT
    University of Maryland
    • Taught students project management and operational techniques involving requirements gathering, requirements writing, choosing a project methodology, and QA.
    • Helped to write and improve new textbooks currently in use.
    • Helped to update the curriculum (currently under review for use next year).
    Technologies: Project Management
  • Full-stack/Desktop/Embedded Developer

    1984 - PRESENT
    • Vastly improved the operational speed and normalization of databases for a number of clients.
    • Simplified the amount of code in use (and the time taken) by a number of clients' applications through rewriting and refactoring of code.
    • Improved system design resulting in shorter and clearer message flows and business processes.
    • Managed projects, sometimes from the onset, and sometimes from the point of original failure to successful completion.
    • Brought clients' website ideas from original sketches to finished websites, boxed products, and embedded products.
    • Closed security holes for a number of clients, including insurance and banking endeavors.
    • Helped in the transition from one system to another, such as SQL Server to Oracle and DB/2, from Borland C to C#, and from Amiga to Mac, Windows, and SGI.
    • Found and fixed a number of bugs for a variety of clients.
    Technologies: APL, ASP, Assembly, Basic, C++, C#, CL, Cobol, Crystal, CSS, Embedded Fortran, HTML, JavaScript


  • JCB™ English and JCB Robotics (Development)

    A knowledgebase/AI that can learn, understand, and make intelligent decisions. Additionally, JCB Robotics can reject a command based on safety/morality grounds. You can see my patents by searching on or go to the product website.


  • Languages

    APL, Assembly, C, C++, C#, Fortran, HTML, Java, JavaScript, PHP, PL/I, SQL, Crystal, Stored Procedure, Transact-SQL, Visual Basic, COBOL, CSS, Visual Basic .NET (VB.NET), Pascal, Prolog, Visual Basic for Applications (VBA)
  • Paradigms

    Management, ETL, Database Design, ETL Implementation & Design, Business Intelligence (BI)
  • Platforms

    Linux, Windows, AS/400, z/OS
  • Storage

    IBM DB2, PL/SQL, Databases, Microsoft SQL Server, Database Architecture, Database Modeling, SQL Server 2014, SQL Server Integration Services (SSIS), SQL Stored Procedures, Relational Databases, Database Triggers, Database Transactions, SQL Triggers, Oracle DBMS, Database Management Systems (DBMS), Column-oriented DBMS, MySQL, PostgreSQL, Teradata, Teradata Databases
  • Other

    Shell Scripting, ISAM, Yacc, Business Analysis, Reporting, Data Modeling, Data Analysis, Data Architecture, Database Optimization, Database Table Optimization, Query Optimization, Stored Procedures, Relational Data Mapping, Relational Database Design, Relational Database Services (RDS), Triggers, Data Reporting, Data Analyst, Data Quality Analysis, Data Analytics, Complex Data Analysis, Kofax, Data Migration, Writing & Editing, Lecturing, Data Warehousing, APIs, Data Warehouse Design, Data Engineering, Database Analytics, Data Visualization, Software QA
  • Frameworks

    ASP, JSP
  • Libraries/APIs

    ASPX, Node.js
  • Tools

    JCL, Microsoft Access, Microsoft Excel, Cron


  • PhD in Computer Science and Software Engineering
    2008 - 2011
    Auburn University - Auburn, AL
  • Master of Science degree in Computer Science
    2006 - 2008
    University of Illinois - Springfield, IL
  • Bachelor of Science degree in Applied Science and Technology
    2004 - 2006
    Thomas Edison State College - Trenton, NJ
  • Coursework in Electrical Engineering
    1973 - 1977
    University of California - Berkeley and Los Angeles, CA

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