Senior C++/Java Engineer with Secret Clearance
Resume:
Lon Chang
Princeton TX *****
********@*****.***
US Citizen
I have Secret Clearances
Clearance and Clearance date: Secret. Favorable made on 2023-03-20 by DoD CAS.
Investigation Type and date: Tier 3 investigation 232******* has been Completed on 2023-02-28.
Continuous Evaluation: Enrolled 2023-03-20 DoD 2022-10-01
Current Location: Princeton TX
Relocation: Available to relocate
EDUCATION
University of Maryland - B.S., Computer Science;
TECHNOLOGY
Languages: Python, C, Pro*C, C++, g++, gcc, Visual Studio Code, UNIX Shell Scripts, JAVA, JavaScript, PL/SQL, Crystal Reports, LDAP, Perl, HTML, PASCAL, Visual Studio C/C++, VBA, COBOL, Fortran and PL/1, Remedy and ServiceNow.
Oracle Tools: SQL*Plus, SQL*Loader, PL/SQL Developer, TOLD
Database: ORACLE, PL/SQL, MySQL, INFORMIX, MS ACCESS
Software: X-WINDOWS, OSF/MOTIF, MS-WINDOWS 7, LU 6.2, Voice IP SNMP, TCP/IP, UDP, IPC, Message Queue, Eclipse
Operating Systems: SUN/Solaris, HP-UX, AIX, SCO UNIX, UNIX, LINUX, MVS/XA
Hardware: AT&T, IBM RS/6000, HP 9000, SUN MICROSYSTEM, IBM MAINFRAME
CERTIFICATION
Fundamentals of Unix, Linux C/C++ Development. HTML5 Development and MQ Series Development
EXPERIENCE
10/26/2025 – 03/13/2026 Radixlink Inc Princeton TX
Work as application support for Client Gainwell Technologies Corp.
•KYXIX MMIS Refactoring C shell Scripts for clients Applications on Linux systems
•Creating Linux shell script for auto run job test.
•Fixed ctl and shl control files
•Experience with GDB debugging
•Used copilot AI fix code issues
•Use Git in Linux systems to upload code
•Fix application production issues
•Support TPL, EDI, Claims and Provider Batch job process and created reports
•Verify test logs and reports from IWS schedule batch run.
•Experience reated Linux shell scripts to create files and deleted files.
•Debug test and fixed code dump files.
•Use Copilot with visual studio code to fix code issues.
•Support cycle monitor process.
04/26/2023 – 06/23/2025 RADCube Princeton TX
Work as Batch Developer (UNIX/C/SQL/Oracle) for Client Gainwell Technologies Corp.
•Coding and test C/C++, Pro*C for clients Applications on Unix and Linux systems
•Creating Unix and Linux shell script for auto run test.
•Develop PL/SQL applications for displaying Oracle database data and system supports
•Experience with GDB debugging
•Everyday development using Agile lifecycle with Jira
•Use Git in Unix and Linux systems
•Knowledge of software configuration management and change management practices
•Experience C/C++ Pthread and UDP Multicast process
•Fix application production issues
•Support TPL, EDI, Claims and Provider Batch job process and created reports
•Experience IBM Workload Scheduler for application process.
•Experience used math_operations python package and Python NumPy in scripts for Billing Application test.
•Experience created Linux shell scripts to run batch job.
•Exerience created Linux shell scripts to create files and deleted files.
•Experience with Python3 scripts with create cycle monitor reports.
09/26/2022 - 02/24/2023 AEROTEK AFFILIATED SERVICES, TX
Work as software Developer for L3Harris client Technologies Tx.
•Coding and test C, Pro*C for clients Applications on Linux systems
•Creating Unix shell script for auto run test.
•Develop C++ with GDAL Application for raster and vector geospatial data formats applications
•Develop PL/SQL applications for display Oracle database data and system supports
•Develop Python3 programs for RF SG380 and SG390 generator test applications
•Developed Java programs for Doe Vottron applications. Netbean, Visual Studio and Git Gui are used for develop
•Use Service NOW to create incident tickets java code
•Experience with GDB debugging
•Everyday development use Agile lifecycle with Jira
•Use Git in Unix and Linux systems
•Knowledge of software configuration management and change management practices
•Working experience with Make, GDB and Valgrind and Cmake
•Experience test with Mongodb NoSQL databases
02/2021 – 09/24/2022 Mphasis Corp, TX
Work as software Developer for Gainwell Technologies Kansas, Indiana and Kentucky states Medicaid claims applications.
•Coding and test C, Pro*C for clients Applications and convert Unix to Linux systems
•Creating Unix shell script for batch job using Autosys applications
•Cycle monitoring on all test and production systems.
•Develop PL/SQL applications for display Oracle database data and system supports
•Experience with a source code version control tool TFS
•Use iTrace, PWB for lease associated CO
•Use Service NOW to create incident tickets
•Experience debugging with GDB debugging
•Using Coverity scan application find and fix defects and make sure codes are no issues.
•Support Production Financial Data flush fix and create reports
•Use SQL scripts and create PAI data and POS Latency reports
•Model, Acc and Production on call support
•Support Go Live Claim extract and spend down data fix
•Fix bad xml data files and retransfer file
•Compile source codes make and build library
•Build and release codes
•Understanding various software development Agile lifecycle (Using Jira)
•Use Git in Unix and Linux systems
•Knowledge of software configuration management and change management practices
•Write TCP/IP and UDP C/C++ programs to send and received for file transfer
•Has OSI 7 Model on data link and network IBS MQ experiences.
•Created test scripts for Mongodb
•Experienced using Valgrind for debug C/C++ source code
•Experienced Python created claim reports
10/2019 – 2/2021 United Airlines Cerritos, CA
Work as Application Software Developer for United Airlines
The system experiences include:
•Coding and test C, Pro*C for clients United Airline Security Applications using Oracle Database 12C and PL/SQL. Support and Process Passenger records information for Airlines Security Systems.
•Creating Unix shell script for batch job for passengers reports and flights information
•Coding Java and JavaScript for United Airlines On Ground applications
•Develop PL/SQL applications for display Oracle database data and system supports
•Experience with a source code version control tool CVS and Git
•Experience debugging with GDB debugging
•Experience EDI Electronic Data Interchange Application for processing EA messages
2/2017 – 10/2019 Mphasis Corp Cerritos, CA
Work as PL/SQL developer for client DXC.
UNIX C Pro*C Oracle Java Web Server/Services.
Developer for DXC and United Airlines security applications
The system experiences include:
•Coding and test C, Pro*C for clients United Airline and DXC Security Application using Oracle Database 12C. Support and Process Passenger records information for Airlines Security Systems.
•Creating UNIX shell script for batch job for passengers reports and flights information.
•Creating Perl and Shell scripts for application Unix unit tests.
•Using IBM MQ Explorer and Infrared 360 application to monitor MQ connections.
•Develop Java Web Server/Services for Airline Security Systems Application. Expert in Eclipse Java, JavaScript, JBoss, Apache Tomcat Web server, Database use Oracle 12c and MySQL
•Use Git for Source code version control.
8/2007 – 11/18/2016 CenturyLink Corp Monroe, LA
UNIX C/C++ Pro*C Oracle Java Ensemble Developer
BSS Infra System Support
The system experiences include:
•Coding C/C++ using Amdocs Frameworks develop Order and Billing applications.
•Coding and reviewing of enhancements done in the Interface side during upgrade.
•Have developed new TUXEDO services for BSS applications.
•Wrote custom support modules for upgrade implementation using Pl/SQL, UNIX Shell Scripts, Pro*C, and C++ in CSM application.
•Strong experience in C++ and knowledge of standard library, STL containers, and algorithms
•Code with C++11, and embedded systems design
•Worked on C++ classes to implement Order Management BE Application.
•Create Perl, Shell script for application function tests.
•Worked on SQL*Loader to load data from flat files obtained from various facilities every day.
•Developed PL/SQL triggers and master tables for automatic creation of primary keys.
•Created PL/SQL stored procedures, functions and packages for moving the data from staging area to data mart.
•Created PL/SQL scripts to extract the data from the operational database into simple flat text files using UTL_FILE package.
•Created scripts to create new tables, views, queries for new enhancement in the application using TOAD and PL/SQL Developer.
•Experience router routing table configuration and setup connect CTL networks for NOC group.
•Experience test CTL smart Modem with CTL network.
•Lead a team with 2 entry software developers provide training and assign tasks for the team members. Result issues with QA team members.
•Guide offshore programmers assigned to the Production Support group
•Conduct code reviews to maintain quality of code
•Develop, maintain, enhance, and support applications
•Provide technical support for Unix systems
•Optimize performance and resolve problems using programming skills
•Develop and write code for Unix platform
•Test CenturyLink BE application
•Test and install executable programs on Unix platforms
•Take regular backup and restore of systems and perform maintenance
•production and test systems
•Create Oracle PL/SQL Scripts to add, update and delete database data
•Use XML applications to create XML strings send and received data from Mainframe Martens and UNIX servers
•Develop, debug, test and fix Ensemble Systems issues
•Using Dimensions for code control
•Design test cases for Order Management System tests
•Strong in UNIX shell scripts and Perl scripts.
•Develop TCP/IP, UDP using IPC client server application.
•Support CPNI new updated memos.
•Create Perl scripts and VB Script to test Billing Systems.
•Create Unix shell using AWK, SED commands
•Experience installing and using IBM Tivoli Workload Scheduler
•On call and support CenturyLink network and Ensemble systems
•Experience debugging with GDB debugging
11/04 - 8/2007 Lowes Corp
COBOL, C/C++, AIX and UNIX developer
The system experiences include:
•Sun Solaris UNIX systems and IBM AIX C developer for Lowes Store Systems.
•Setup and Configuration for Store Systems Applications.
•Monitor and support Store System fix problems and write reports to Remedy Incident Report System.
•Develop Shell and Perl scripts to install applications and access the database.
•Expert in TCP/IP and UDP file transfer C programs, IPC, Message Queue, signals, sockets, Unix File APIs.
•Very strong in structures design, development life cycle, coding, test and release to production. Database experiences include Oracle, MS SQL and Sybase ESQL.
•Compile, debug, test and build test plans and test cases for unit test.
•Install Applications in 1300 stores.
•Develop Oracle 9i PL/SQL scripts for HR Applications.
•Develop QTP VB scripts, test case and test suites for Lowes Store System Application.
•Develop Java applications to access Lowes.com.
•Use CVS to store all source code in CVS application.
•Work on projects optimizing Visual C++ codes for financial software using Microsoft Visual Studio 2005
1/02 – 11/04 Nortel Networks Corp
C++ Software Developer
Design and develop Nortel Networks Corp.
The system experiences include:
•The GAPP, CATT and Nortel Billing Applications is in Sun Solaris Unix, Linux and Microsoft NT 2000 systems.
•Design and develop C++ programs client/server and web base applications.
•Design and develop Credit Card and Billing applications.
•Coding, compile and, Expert and include libraries for the applications.
•Use TCP/IP data transfer classes for the application.
•Create Unix shell scripts (Korn shell, C shell, BASH shell and Born shell) for the applications.
•Write function test scripts and test for the applications.
•Fix bugs and report status.
•Create automated install Unix scripts for the HP-UX 9000 applications.
•Deep understand and using SDLC process for all applications development.
•Use PVCS Tracker report problems.
•Create SNMP, SIP C programs to test VOIP process.
•Using Ethernet Switch test net work connections.
•Experience connect to networks and process router packets.
PL/SQL Experience includes:
•Create PL/SQL block to perform actions, display debug statements, writing handle exceptions. Create stored procedures, stored functions and stored packages. Create database triggers.
•Build Web Applications with Oracle Web Server.
•Startup and shut down Oracle Web Listener.
•Backup and restore Oracle database.
SUMMARY
Senior software developer with expertise in Unix C/C++, Java, Python, Shell Scripts, Oracle database, PL/SQL, Sybase, AIX, UNIX internals, Sun Solaris, MS WINDOWS XP, and MS NT 2000 CLIENT/SERVER, Oracle Web Server and Oracle Application Server.
1. I have experience in coding and testing applications in C and Pro*C for client projects on Linux systems, as well as creating Unix shell scripts to automate testing processes. Additionally, I have developed C++ applications utilizing GDAL for handling raster and vector geospatial data formats. My expertise extends to PL/SQL development for displaying data from Oracle databases and providing system support. Furthermore, I have created Python3 programs for testing RF SG380 and SG390 generators, and I have also developed Java applications for Doe Vottron, utilizing tools such as NetBeans, Visual Studio, and Git GUI for the development process.
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