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Engineer, technologist, marketer and technical evangelist, I translate between marketing, engineering and field sales to ensure alignment and deliver customer focused solutions and messaging. 20 years experience in software development, hi-tech sales, technical marketing, technology evangelism and executive communications. 11 years experience with Internet of Things and a pioneer in the field. Dedicated, focused, intelligent and very energetic. I bring passion and energy to everything I do and inspire it in others.


  • Internet of Things (IoT) pioneer

  • Executive level presentation skills

  • Expertise in new technology architectures

  • Open source and developer community development and support



  • Application architecture and proof-of-concept design for business solutions

  • New and emerging technology management

  • Demo application development, presentation, packaging, and distribution

  • Industry reviews management of key technologies

  • Press and Analyst presentations (Media-trained official company spokesperson)

  • Technical presentations to CEO, CIO and technical staff

  • On-stage demo and technical presentations to audiences of all levels, from 10 to 20,000 members

  • Web site development in HTML and PHP, including design, installation and maintenance of LAMP stack

  • Java application development and application porting to Java

  • Java ME (Mobile) application development

  • Technical support, trouble shooting, problem diagnosis and software maintenance

  • Network software engineering and development

  • TCP/IP socket-based applications development

  • UNIX shell script programming

  • Experience with Apple, Windows, Linux and Sun Microsystems hardware and software



Founder and Chief Technology Officer • Dragonfly IoT, Holly Springs, NC — November 2015-Present

  • Responsible for all engineering activities

  • Contract and consulting for IoT integration projects, demo development and other IoT-related development efforts

  • Whitepaper and blog post authoring

Chief Technology Evangelist • PsiKick, Charlottesville, VA — March 2015-October

  • Defined developer platform architecture for engaging developers with new IoT Platform

  • Tested experimental IoT hardware and developed demos to showcase unique capabilities

  • Built custom iOS applications for demos

  • Built custom (C-based) developer interface for in-house developed custom hardware

  • Ported Linux/Windows driver to Mac OS X

  • Brought in both Fortune 50 and emerging company partners and customers

  • Evangelism activities including blog posts, active twitter feed, LinkedIn updates, etc. promoting IoT and company offerings

  • Technical evangelism of Ultra Low-Power IoT Chips


Technical Evangelist • Riverbed Technologies, Inc., San Francisco, CA — 2012-2015

  • Worldwide technical evangelism for the Entire Riverbed platform of products including WAN Optimization, Storage Optimization, Network and Application Performance Management, and Cloud Storage solutions.

  • Developed and delivered demos for video, web, and major on-stage product launches.

  • Delivered over 100 User Group presentations to potential and current Riverbed customers enabling the Field Sales organization to close sales and deliver value to customers.

  • Organized and developed the technical session content for the Riverbed FORCE user conference including 60 Technical Sessions, 20 Hands on Labs, and continuous Certification Testing by engaging key stakeholders throughout the company.

  • Delivered customer presentations, marketing presentations, end-user and developer workshops.

  • Directly engaged with over 1,000 customers per year to drive sales revenue and increase cross-product adoption.

  • Regular contributor to the Riverbed Corporate blog as well as maintaining a regular and significant presence on Social Media to drive traffic to Riverbed web properties.


Staff Engineer • Sun Labs (now Oracle Labs), Menlo Park, CA — 2003-2012

  • Engineering and technical marketing for extremely large-scale experimental storage system including early access customer management, customer support and benchmark testing.

  • Research and development for embedded wireless sensor network platform

  • Developed and grew the user and developer community from zero to ~3,000 participants.

  • Developed the installer software for entire Sun SPOT Platform

  • Delivered customer presentations, marketing presentations, end-user and developer workshops.

  • Developed the Demonstration Application Suite for Sun SPOT Platform

  • Maintained a regular high-traffic technical blog (top 50 blogs on


Senior Technical Marketing Manger • Vitria, Sunnyvale, CA — 2002-2003

  • Created and delivered in-bound and out-bound technical product messaging

  • Managed the Executive Brieļ¬ng Center

  • Developed new product launch messaging

  • Developed and delivered new product launch demos and support


Senior Technical Marketing Manager • General Magic, Sunnyvale, CA — 2002

  • In-bound and out-bound technical marketing of J2EE/VoiceXML-based enterprise voice application (OnStar)

  • Wrote technical trade journal articles in support of business and marketing objectives

  • Developed and delivered web-based seminars on voice application development and deployment

  • Developed VoiceXML and J2EE demonstration application

  • Conducted technical evaluations of partner/competitor offerings

  • Developed and supported on-line developers program including White Papers, answering technical questions, developer support, etc.

  • Managed technical aspects of relationships with strategic partners; negotiated joint marketing agreements and joint press releases

  • Managed tradeshow appearances and activities including booth space, development of collateral material, giveaways, demos and presentations


Field SE, Java Field Technologist, Senior Technology Manager, Executive Demos Manager, Market Solutions Engineer • Sun Microsystems, Inc., Menlo Park, CA — 1985-2001

  • Identified key industry solutions partners by market segment

  • Negotiated and implemented Joint Development Agreements and Joint Marketing Agreements

  • Provided world-class support of key ISVs during porting and integration efforts

  • Developed Go To Market plans with ISV Partners

  • Responsible for all aspects of on-stage keynote demos for Sun Microsystems Executive Committee Members (Scott McNealy, CEO, Greg Papadopolous, CTO, Bill Joy, Chief Scientist)

  • Identified appropriate emerging technologies within Sun and with partners to align with executive messaging and developed appropriate demos to align with keynotes and messaging on extremely short timeline

  • Provided technical evaluations of emerging technologies for productization

  • Delivered customer-centric recommendations of new features and functionality for existing product

  • Performed usability testing of new products

  • Developed and managed successful early access/beta program technical support programs

  • Responsible for development and production of Companion Applications CD for Products

  • Developed executive, press, industry analyst, and field sales product demonstrations, including third-party application integration, packaging, testing, delivery and distribution

  • Successfully managed engineering/marketing relationship for emerging products

  • Developed field sales technical collateral and presentations for new products including delivering field specialist training programs

  • Recruited and supervised field technical specialists across the world

  • Collected and managed technical and marketing data to/from world-wide field sales organization

  • Managed extremely successful industry press reviews of new and emerging products (responsible for "Editor's Choice Award" review of Sun Ray 1 by PC Magazine (April, 2000))

  • Regularly accompanied business unit executives on press/analyst tours as trusted technical advisor

  • Provided technical account management for multiple Sun 'Top Ten' national high-profile accounts

  • Served as national subject matter expert for Java at customer presentations

  • Developed Java applets and applications for 'proof of concept' customer demonstration events.

  • Delivered application architecture and design review for high-profile national accounts.

  • Provided superior technical sales support as needed for field sales representatives

  • Investigated and resolved complex technical problems on a timely basis to maintain customer satisfaction

  • Contributed to the definition of sales and support strategies, and participated in sales calls

  • Coordinated the effective use of other personnel and resources in support of technical and sales objectives

  • Configured and installed servers and complex networks for customers

  • Reviewed complex sales quotes for technical accuracy and completeness

  • Provided expert technical assistance in response to RFP's, RFI's, RFQ's and proposals



  • University of New Mexico, Computer Science Masters Program — (incomplete)

  • Columbia University, New York City, Bachelor of Arts 1988



  • Innovation @ Sun (Formerly Chairman's Award) for Sun SPOTs 2008

  • Sun Microsystems, Inc. Java 'ACE' of the Year Award, 1997


  • NERD Network Event Recording Device: An Automated System for Network Anomaly Detection and Notification, Proceedings of the Internet Society Symposium on Network and Distributed System Security, 2/16/95

  • Contributing Author Advanced Techniques For Java Developers

  • NC or NetPC: Which is the Better Approach? (NetworkWorld , October 6, 1997)

  • Voice Self-Service Applications on J2EE to the Rescue (WebSphere Developer's Journal, May,2002)



If you're interested in recommendations, etc, please see my profile on LinkedIn but here are a few excerpts:

James Gosling, Sun Microsystems (The 'Father' of Java)
"He can carry an evangelical torch through the darkest of days with a steadfast vision. He believed in IoT long before it "was a thing". He does beautiful work."

Greg Papadopoulos, CTO/EVP R&D, Sun Microsystems
"David has this rare and hugely valuable ability to both connect with customers (and truly understand what that means in the field engineering sense), as well as do really great advanced development. I always enjoyed listening to his latest thinking and hearing about his projects --- loved the perspective and creativity."

Roger Meike, Senior Research Director, Director of Operations, Sun Labs
"I had the pleasure of working with David for several years both locally and remotely and I can say without hesitation that it has been a pleasure. He has a rare combination of engineering ability with marketing sensibility that made him an incredible asset in our desire to build a community of developers for the Sun SPOT project. He was able inspire developers with his innovative projects, work with them on a technical level and then be an advocate for the customers to the rest of the team. He did this while simultaneously contributing to the technical progress of the project by developing the tools that made the entire project possible. David is a true jack of all trades, one moment digging into code and the next minute setting up a trade show demo or giving a talk. As a remote employee, he worked independently and pushed the project forward on new fronts while always staying connected and available to the team despite time zone differences. He can thrive in any environment where he can combine his technical and social skills for the good of the product or company."

Brenda Laurel, Distinguished Engineer, Sun Labs
"David Simmons is a man who knows few, if any, limits. He works tirelessly and effectively - and that's on a BAD day. Seriously, David possesses both superior engineering talents and a unique ability to communicate, engage and persuade others - a combination too rarely seen in the high-tech industry. Working with him was often educational, usually inspirational, and always delightful. He is well qualified for senior positions in engineering, management or marketing, and he has my highest recommendation."

Randall Smith, Sr. Staff Engineer, Sun Microsystems Research Labs
"David is a highly productive and very bright programmer. Over the past few years working with David on the Sun SPOT project, I have been impressed with his ability to work within a loosely defined mandate to design and rapidly implement numerous tools ... most of these tools he conceived on his own as mechanism that solve everyday user problems. He sticks with his projects, working to extend and improve his software over time. His contributions are now absolutely central to the Sun SPOT project: thousands use his systems on a daily basis. In addition, David is an excellent communicator, and has a quick mind with a blisteringly hysterical sense of humor. He has been a real joy to have on the team."

Mary Smaragdis, Director, New and Social Media, Sun News Network, Sun Microsystems
"David is a technologist of great talent and expertise. He goes beyond just pushing the envelope on innovation in his work, however. He's also very skilled at creating community around the technical initiatives he's driving. He's very well versed in using emerging social ecosystems to drive awareness and engagement in the technical initiatives he's chartered with. He creates global communities of supporters, contributors and boosters in his work, and I count myself in those."

Please contact me for more references, see my LinkedIn Profile.