John Maxfield work email
- Valid
- Valid
John Maxfield personal email
- Valid
I am a software engineer with over 30 years of experience developing IBM mainframe products. I've been writing HLASM (IBM mainframe high level assembler) software systems since 1986. During my career, I have led many successful engineering efforts to create, enhance, and maintain IBM mainframe products for database management, system security, and system performance.
-
Senior Software EngineerBroadcom Sep 2023 - PresentPalo Alto, California, UsAs a senior software engineer, my primary responsibly is to enhance and maintain CA Explore Performance Management for z/VSE.During my first year, I completed an enhancement, APAR LU14922 Report Writer CSV Output Support, that allow customers to produce a CSV disk file containing a tabular report. This reduces the effort required to import tabular report results into a spreadsheet. -
Senior Software EngineerVanguard Integrity Professionals Jan 2017 - Sep 2023Las Vegas, Nv, UsAs a senior software engineer, my primary responsibly was to enhance and maintain Vanguard ez/Token.Vanguard ez/Token provides multi-factor authentication for IBM System Z applications. Vanguard ez/Token communicates with multi-factor authentication services such as ActivID, DUO, LinOTP, PingID, PIVCard, and RSA SecureID. Vanguard ez/Token also supports the RADIUS protocol and Vanguard proprietary passcode methods.Most recently, a colleague and I implemented a new product architecture for Vanguard ez/Token Version 2.4. This new version improves performance and includes support for RACF, ACF2, and Top Secret Security. -
Senior Software EngineerRocket Software Aug 2014 - Aug 2016Waltham, Ma, UsAs a senior software engineer, I resolved product defects and developed enhancements for the IBM DB2 for z/OS Cloning Tool.During my two years as a cloning tool engineer, I provided enhancements that 1) resolved memory leaks which caused end-of-memory abends, 2) reduced CPU consumption by 60%, 3) implemented media manager services to resolve I/O errors during the log apply processing phase, and 4) developed an overlapped I/O method to achieve CPU bound processing for significant elapsed time reduction.Along with resolving a substantial number of IBM DB2 Cloning Tool defects, I produced an enhancement that provides customers with the option of executing IBM DB2 UNLOAD and LOAD utilities to complete the cloning process for source and target objects with different object attributes. This UNLOAD and LOAD process is performed using the DB2 DSNUTILU stored procedure in a multi-threaded environment. -
Lead Software EngineerBmc Software Apr 1993 - Jul 2014Houston, Texas, UsAs a lead software engineer, I resolved product defects and developed enhancements for LOAD PLUS for DB2, UNLOADPLUS for DB2, REORG PLUS for DB2, and CHECK PLUS for DB2.During my employment I received numerous innovation awards and three patents. In 2013, a BMC innovation program reviewed approximately thirty innovations from BMC development organizations. Four of these innovations were selected for further research and development of which two were my own.Some of my more significant development projects included:1) LOB and XML Data Type Support - required significant architectural changes to support multi-threaded LOB and XML extract, transform, and load processes for LOB an XML auxiliary objects. This project also required implementation of HFS and BPAM access methods for referenced file data sources.2). SmartDBA for DB2 Automation Spawner - is a multi-threaded started task that generates, schedules, and executes data management functions on candidate objects during user defined processing windows.3). UNLOAD PLUS for DB2 DIRECT NO Support - required parser enhancements to extract SQL from utility statements, preparation and execution of dynamic SQL, and production of internal row images from fetched rows to allow utility conversion and translation processes to produce unload formatted rows based on field specifications.4). DB2 Version 5 ASCII Server Support ASCII Server Support - required common, extensible, translation services to provide support for data translation integrated within high performance data conversion routines.5). DB2 Version 3 Compression Support - required interfaces to DB2 lempel-ziv compression dictionary build services and integration of data compression and expansion services during utility row processing. -
Software AnalystCa Technologies Sep 1990 - Apr 1993San Jose, California, UsAs a Software Analyst for Sterling Software Compression Tools (MVS, DB2, and IMS), I communicated with customers to analyze and resolve product defects. This process involved analyzing dumps, developing code changes, performing quality assurance testing, and recommending changes to publications. I also developed and delivered presentations for customer education. -
Staff SergeantUnited States Marine Corps Dec 1981 - Jun 1990Washington, Dc, UsI was a seven-time rifle expert, a pistol sharp shooter, a two-time battalion high shooter, a rifle range coach, and I maintained a first class PFT during my eight and one half years of service.My Military Occupational Specialties (MOS) were Systems Programmer (4069), ALC Programmer (4065), Data Control Technician (4038), IBM Series/1 EDL Programmer (4066), and COBOL Programmer (4063).As an IBM Series/1 EDL Programmer (4066), I deployed with Communication Company, Combat Service Support Detachment 33 (CSSD-33), 3rd Force Service Support Group (3rd FSSG), Fleet Marine Forces Pacific (FMFPAC), for Team Spirit 83, Pohang, South Korea, February 1983. During the exercise, I operated IBM Series/1 Green Machines producing encrypted messages on paper tape for transmission via satellite.As a systems programmer, I was responsible for mainframe capacity planning, performance and tuning, coding system exits, software installation, and software education.
John Maxfield Skills
John Maxfield Education Details
-
Austin Community CollegeAdvanced C++ Programming -
Austin Community CollegeC++ Programming -
United States Marine Corps Computer Sciences SchoolMvs Diagnostic -
United States Marine Corps Computer Sciences SchoolMvs Performance And Tuning -
United States Marine Corps Computer Sciences SchoolMvs Fundamentals And Logic -
Orange Coast CollegeIbm Mainframe Assembler Language Programming -
United States Marine Corps Computer Sciences SchoolData Control Techniques -
Orange Coast CollegeIbm Mainframe Fortran Programming -
United States Marine Corps Computer Sciences SchoolCobol Programming -
Banning High School
Frequently Asked Questions about John Maxfield
What company does John Maxfield work for?
John Maxfield works for Broadcom
What is John Maxfield's role at the current company?
John Maxfield's current role is Software Engineer.
What is John Maxfield's email address?
John Maxfield's email address is jo****@****ook.com
What schools did John Maxfield attend?
John Maxfield attended Austin Community College, Austin Community College, United States Marine Corps Computer Sciences School, United States Marine Corps Computer Sciences School, United States Marine Corps Computer Sciences School, Orange Coast College, United States Marine Corps Computer Sciences School, Orange Coast College, United States Marine Corps Computer Sciences School, Banning High School.
What skills is John Maxfield known for?
John Maxfield has skills like Ibm Mainframe, Z/os, Db2, Mainframe, Ibm Db2, Software Development, Mvs, Job Control Language, Software Design, Software Engineering, Software Project Management, Technical Leadership.
Free Chrome Extension
Find emails, phones & company data instantly
Aero Online
Your AI prospecting assistant
Select data to include:
0 records × $0.02 per record
Download 750 million emails and 100 million phone numbers
Access emails and phone numbers of over 750 million business users. Instantly download verified profiles using 20+ filters, including location, job title, company, function, and industry.
Start your free trial