Mar 2019 – Mar 2019 · 0 mo

• Created "Software Architecture Foundations" class (https://www.linkedin.com/learning/software-architecture-foundations or https://www.lynda.com/Developer-tutorials/Software-Architecture-Foundations/779753-2.html)

Jan 2018 – Present · 8 yrs 3 mos

• I’ve created two classes for LinkedIn Learning: Software Architecture Fundamentals (an introduction to what a Software Architect does and to a few of the common architectural patterns), and Domain-Driven Design (covers the basics of DDD including a demonstration of Event Storming).

Jan 2015 – Present · 11 yrs 3 mos

• Created three 5-star video courses:
• "Swift in Depth"​ is an in-depth introduction to Apple's Swift programming language for professional-level programmers.
• "Picturing Architecture" takes you through the design process from story development to code, showing you the visual artifacts (e.g. story maps and whiteboard drawings) that can help you work.
• "OO Design" covers the essential principles of Object-oriented design, with extensive examples (in Java) demonstrating those principles.

Jan 2015 – Present · 11 yrs 3 mos

• Authored the "Design Patterns in the Real World" video course --- a practical introduction to the Gang-of-Four design patterns. I also speak regularly at O'Reilly's Software Architecture conference (SACon) and have a bi-monthly webinar on Incremental Architecture.

Feb 2012 – Dec 2012 · 10 mos · San Francisco Bay Area

• Hired on a consulting basis as principle (that is, only) architect. Did that, but also spent considerable time doing hired-gun CTO work surrounding culture changes within the organization as a whole. Guided the design of financial subsystem APIs and "expert" (user) dashboard. Considerable Agile infusion work. Presented weekly "university" sessions on various technical design/development topics. Provided in-depth company-wide training on Agile process (not just Scrum, but agile practice as well). Provided hands-on guidance to several groups re. architecture and process. Implemented (using TDD) an API framework that provided a bare-bones implementation suitable to be taken over by the actual developers.

Aug 2011 – Mar 2012 · 7 mos · Oakland, Ca

• Representative of one sort of programming project that I take on occasion to stay sharp. This was a back-end financial system, requiring rock-solid reliability, built in Java using BerkeleyDB and HornetQ (which I don't recommend). Heavy use of TDD, implemented under Mockito and PowerMock. Integration with Jenkins. Agile development environment. Helped estanblish a functional engineering culture based on TDD and agile principles.

Jan 2009 – Jan 2010 · 1 yr · Distributed.

• Typical of an early-stage startup, a hands-on CTO job that involved programming, management, and strategic work building a highly interactive Web 2.0 application. Guided small distributed development team using Agile processes. Working closely with scientist domain experts, determined user requirements, designed, guided implementation, and helped implement web-based electronic-notebook for biotech researchers, a highly interactive AJAX Web 2.0 application based on the Google Web Toolkit (GWT), JavaScript, Java Servlets, and MySQL. Made hiring decisions and interviewed candidates.

Jan 2000 – Present · 26 yrs 3 mos

• Provide technical and strategic advice, participate in occasional board meetings, provide a sounding board for the principals.

Jan 2000 – Jan 2001 · 1 yr

• Responsible for product design, building a technical team, and for infusing a culture of engineering best practices throughout the organization. Designed physical and software architecture for a cross-jurisdictional certificate infrastructure for use in eBusiness. Mentored the marketing department in Use-Case analysis and OO requirements-gathering techniques using UML. Hired engineers.

May 1999 – Jan 2004 · 4 yrs 8 mos · San Francisco

• Wrote a highly technical monthly column on Java programming, geared towards solving the problems of real programmers. Columns were always about nuts-and-bolts programming issues, and were written for advanced-level programmers.

Jan 1990 – Present · 36 yrs 3 mos · International

• A regular presenter at many conferences. I now speak primarily on Agile-process and software-architecture topics such as design patterns and optimizing architecture for Agile development (Recent talks at: http://sddconf.com/ , http://ndcconferences.com/ , https://conferences.oreilly.com/software-architecture/sa-ny )

Jan 1990 – Jan 2009 · 19 yrs · Santa Clara, CA

• Probably the most technically rigorous of the non-vendor-related technical conferences, spoke at the conference on diverse topics over the entire life of the conference, and served as the Security Track Chair from 2003-2009.

Jan 1984 – Present · 42 yrs 3 mos · International

• Write regular monthly columns and blogs. Topics (depending on the publication) included Java, object-oriented design, software-industry analysis. My writing is characterized by above-average technical depth and a willingness to critique common wisdom when alternative approaches are available. My "C Chest" column (in Dr. Dobb's Journal during the mid-to-late '80s) was instrumental in introducing the C programming language to the programming community.
• Also review submissions and made publication decisions. High-level content edits.

Jan 1983 – Present · 43 yrs 3 mos

• REPRESENTATIVE PROJECTS
• Executive and Team Coaching, Fractional/consulting CTO
• Improve your software-development processes, making them faster, cheaper, and higher quality. Make AI assistance more impactful, without creating long-term problems. Coach at both the executive and team levels, and train entire organizations in effective processes and AI-friendly architecture (such as Agentic microservices). Participate in strategic decision-making.
• Principal Software Architect
• Creating an AI-friendly architecture that easily adapts and scales to changing requirements. Working with end users, gather requirements and develop APIs and architectural-level design for system that satisfies user needs. Provide structural designs for highly-robust systems that optimize throughput (hits per minute), etc. (Pearl.com/Justanswer.com, CoValuate/SmartCorridors, etc)
• Training
• Full-team training in effective process (beyond Scrum and Agile). Consulting with senior staff (CTO, VPE, Senior Engineers) in methodology and culture. Also train engineers in software architecture and systems thinking with a focus on agility (easily adapting to changing requirements) and AI-assistance. Put together small design teams that take a real problem from requirements gathering through to an implementation-level architecture. Please see a full list of classes at http://holub.com/classes
• Programming
• Guru-level in many languages (Java, C++, JavaScript/Typescript, Python) and competent in many others. Projects range from robotic systems, compilers (both proprietary languages and C implementations for nonstandard hardware), real-time operating systems (both at the kernel and I/O levels) to web applications (React/Redux, JQuery, Less, Bootstrap, etc.) and enterprise-scale server back ends (REST, SaaS, microservice back ends). Considerable experience with server-side infrastructure (JMS/messaging, ZeroMQ, Rabbitmq, Kafka, MySQL, MongoDB, BerkleyDB, Cassandra, Redis, etc.)

Jan 1983 – Present · 43 yrs 3 mos

• Advisory Council, University of Calif. Extension, Computer Information Systems Dept.
• Senior Editor, C/C++ User’s Journal, Java Solutions
• Contributing Editor, SD Times, JavaWorld, Programmer’s Journal, Dr. Dobb’s Journal
• Technical reviewer, Kernighan and Ritchie, "The C Programming Language."
• Technical reviewer, Spolsky, "User Interface Design for Programmers."

Jan 1983 – Jan 2020 · 37 yrs

• . I teach some of the most technically rigorous classes offered by the Extension, in subjects ranging from Object-Oriented Design (and Design Patterns) to Java and C++ to Web Front-End development (HTML, CSS, JavaScript, Bootstrap, React, UX, Wordpress). Consistently received highest student ratings in the department.