John Sloan

John Sloan Email and Phone Number

a.k.a. Chip Overclock® @ Digital Aggregates Corporation
John Sloan's Location
Denver Metropolitan Area, United States, United States
John Sloan's Contact Details

John Sloan work email

John Sloan personal email

About John Sloan

John Sloan does software and firmware development for very large and very small products on the Internet of Interesting Things: real-time, high-reliability, kernel, new and prototype hardware, board support package, board bring-up, distributed, datacenter, embedded, device drivers, asynchronous, low-level, concurrent, clouds, microcontrollers, interconnected, high-altitude, close to bare metal, and even some web front-end and back-end when duty calls. John is currently the sole employee of Digital Aggregates, a firm he founded in 1995, through which he helps clients plan, architect, design, develop, debug, ship, integrate, troubleshoot, reverse engineer, and support their products. For more than four decades, John has worked in the academic, big science, supercomputing, telecommunications, industrial control, enterprise, business aviation, and defense and intelligence sectors. At Wright State University, he led a systems administration and network engineering group, introducing the campus to UNIX and the Internet. While at the National Center for Atmospheric Research, he was the head of the section responsible for that national lab’s supercomputers, mass storage system, and server farm. While at Lucent Technologies and its spinoffs, John worked on teams to develop, ship, and support telecommunications products and major features, working on some for several release cycles. John has co/authored an article in the Proceedings of the IEEE, an entry in the Encyclopedia of Computer Science, and many conference papers and technical reports. He is the co/inventor of two patents. John has served on industry and academic advisory panels, has been an invited conference speaker, and has served as a visiting scientist and consultant domestically and abroad. He has worked with remote engineering teams in such exotic locales as China, India, Australia, Scotland, Ireland, England, and New Jersey. He has taught university courses in real-time and embedded software design at the undergraduate and graduate level. He has M.S. and B.S. degrees in Computer Science from Wright State University in Dayton Ohio. John entertains his friends by writing on business and technology under the pseudonym Chip Overclock®. There are several Raspberry Pi SBCs running 24x7 at the palatial Sloan estate, where a cesium atomic clock ticks away in the living room near a differential GNSS base station. Due perhaps to his broad skill set, this ambivert has been described by former managers as "a renaissance man" and as "unfocused".

John Sloan's Current Company Details
Digital Aggregates Corporation

Digital Aggregates Corporation

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a.k.a. Chip Overclock®
John Sloan Work Experience Details
  • Digital Aggregates Corporation
    Principal Consultant
    Digital Aggregates Corporation Nov 1995 - Present
    Wheat Ridge, Co, Us
    Worked on new business aviation products developed under AS9100 and DO-178C DAL D and tested under DO-160. Developed ARINC 717 and other software portions of IFE business aviation product. Developed custom platform capabilities for an Android-based product. Developed Asterisk channel drivers, codec, and associated device handlers for an Iridium-based SATCOM business aviation product that also supported Inmarsat. Developed PIC microcontroller firmware for building automation sensors and controllers. Hacked PowerPC and ARM Linux kernels and drivers to support new hardware. Developed portions of protocol stack for cellular base transceiver station. Wrote board support package, configured, built and hacked Linux kernel and file systems, and developed device drivers, daemons and applications for custom embedded target. Taught course in embedded development specific to customer's code base. Reverse-engineered competitive product and developed firmware emulation. Designed and developed Java framework for web services business orchestration product. Consulted on requirements and architecture for Fibre Channel optical switching product. Consulted with foreign government on their purchase of supercomputer and other data processing systems. Experience with GPS and other GNSS technologies for PNT applications.
  • Cranequin Llc
    Owner And Founder
    Cranequin Llc Nov 2014 - Present
    Cranequin LLC is a wholly owned subsidiary of the Digital Aggregates Corporation. It is the proprietary closed source business to the parent company's open source and consulting business.
  • Avaya Inc.
    Member Of The Technical Staff
    Avaya Inc. Feb 2000 - Aug 2006
    Morristown, New Jersey, Us
    (Avaya was spun off from Lucent Technologies.) Technical lead for service-oriented architecture/event-driven middleware platform using Java Business Integration enterprise service bus for business process automation product (CPM). Designed and developed C software under Linux for high-availability/survivability feature for PBX product under ISO 9001 conformant processes at SEI CMM 3 (CM ESS). Architect and technical lead of a team developing reusable library of C++ classes based on POSIX threads for embedded Linux and VxWorks applications. Designer and lead developer of error recovery subsystem, trap generation, alarm management, and other embedded software in C++ under VxWorks for VOIP media gateway product (G700). Routinely dealt directly with customers, both on-site and remotely, for troubleshooting, site support.
  • Lucent Technologies Inc.
    Member Of The Technical Staff
    Lucent Technologies Inc. Dec 1996 - Feb 2000
    Designed and implemented hard real-time software in Java and device software and drivers in C, implementing analog station and trunk applications, CODEC and SLIC interfaces, and related infrastructure under C-Executive for VOIP access concentrator product (R300). Designed and implemented traffic shaping, survivability, error recovery, power-on self-test, and other embedded and device software in C++ and assembler under VxWorks for ATM network interface card product (TN2305). Designed and implemented several connection admission control algorithms in C under pSOS for ATM switch product (A500). Performed troubleshooting of ATM network issues on-site for Fortune 500 customers. (Avaya was spun off from Lucent Technologies.)
  • University Corporation For Atmospheric Research
    Section Head, Assistant Section Head, Software Engineer V
    University Corporation For Atmospheric Research Jul 1989 - Dec 1996
    Boulder, Colorado, Us
    Managed section at the National Center for Atmospheric Research, a national lab sponsored by the NSF, responsible for mainframe-based mass storage system, several supercomputers, file servers, and other UNIX-based distributed systems. Developed mass storage architecture, benchmarks, and simulation software in C, SAS, Perl under UNIX, publishing several papers on this work (MSS). Developed user interface, task control, file management, and graphical imaging software in C for distributed Solaris-based film and fiche output production system (TAGS). Developed portable UNIX-based software tool libraries in C, ported across many platforms, and reused in several projects by other developers (LIBTOOLS).
  • Wright State University
    Director, Senior Computer Systems Engineer, Senior Systems Programmer, Instructor
    Wright State University Mar 1976 - Jul 1989
    Dayton, Oh, Us
    Technical lead and manager of developers, systems programmers, network engineers, and system administrators (mostly undergraduate and graduate students). Introduced the campus to UNIX and the Internet. Taught undergraduate/graduate-level ten-week course in real-time/embedded software design. Developed real-time robotics software framework in FORTH and PDP-11 assembler. Developed mainframe-based systems code in IBM 360/370 assembler, including I/O channel programming. IT manager; system administrator; network engineer; mainframe systems programmer.
  • Third National Bank
    Computer Operator
    Third National Bank Jun 1974 - Mar 1976
    Worked part-time as an IBM 370 mainframe computer operator on weekends on any of three shifts while attending university during the week. Spent a lot of time doing homework on scrap continuous form paper while listening to rock and roll on the radio.

John Sloan Skills

Device Drivers Embedded Systems Software Development Embedded Software Linux Distributed Systems Unix Software Design Vxworks Linux Kernel Telecommunications C Firmware C++ Tcp/ip System Architecture Java Public Speaking Multithreading Voip Rtos Object Oriented Design Technical Writing Python Pthreads Product Development Integration Posix Asterisk Embedded Operating Systems Sockets Iridium Atm Api Design U Boot Reverse Engineering Systems Programming Freertos Iot Time And Frequency Go Global Positioning System Avionics Satellite Communications Programming Ipv6 Android Platform Rust Arinc

John Sloan Education Details

  • Wright State University
    Wright State University
    Computer Science
  • Wright State University
    Wright State University
    Computer Science

Frequently Asked Questions about John Sloan

What company does John Sloan work for?

John Sloan works for Digital Aggregates Corporation

What is John Sloan's role at the current company?

John Sloan's current role is a.k.a. Chip Overclock®.

What is John Sloan's email address?

John Sloan's email address is go****@****ail.com

What is John Sloan's direct phone number?

John Sloan's direct phone number is +171937*****

What schools did John Sloan attend?

John Sloan attended Wright State University, Wright State University.

What are some of John Sloan's interests?

John Sloan has interest in Christianity, Kids, Cooking, Investing, Outdoors, Electronics, Education, Shooting, Reading, Sports.

What skills is John Sloan known for?

John Sloan has skills like Device Drivers, Embedded Systems, Software Development, Embedded Software, Linux, Distributed Systems, Unix, Software Design, Vxworks, Linux Kernel, Telecommunications, C.

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