06 PEOPLE ✣

Pioneers of Developer Relations.

These are the people who created or substantially shaped the discipline. Some invented evangelism; some made it a recognised profession; some wrote the books and gave the talks that defined how the field thinks about itself. Each entry c…

ENTRY · 16 MIN · 3,648 WORDS

For the works produced by these figures, see ./notable-works.md.

Guy Kawasaki

Best known for. Apple Macintosh evangelist, 1983 – mid-1980s; author, Selling the Dream (1991); subsequent career in venture capital and as an author/speaker.

Significance. The single person most responsible for legitimising “evangelist” as a job title. Kawasaki was hired by Apple in 1983 to convince software developers to build for the Macintosh, a machine the industry took seriously as a toy and seriously as a threat — but rarely both at once. His combination of technical credibility and persuasive speaking became the template. Selling the Dream, his 1991 book, codified the practices he had pioneered: identify a “cause” worth evangelising, recruit converts, equip them with tools, and let them spread the message.

Kawasaki is sometimes credited with the term itself; whether or not he invented it, he made it stick. Subsequent books — The Art of the Start (2004) and several others — became business-school standards. His later career as venture capitalist (Garage Technology Ventures), chief evangelist at Canva, podcast host (Remarkable People), and motorcycle enthusiast kept him visible across decades.

Adam Wiggins

Best known for. Co-founder of Heroku (2007); author of The Twelve-Factor App (2011); subsequent work at Ink & Switch (research lab).

Significance. Wiggins did not hold a DevRel title, but the Twelve-Factor App methodology and the developer-experience philosophy behind Heroku set the standard that defined how Platform-as-a-Service companies engaged with developers for the next decade. Modern PaaS DevRel — at Render, Fly.io, Railway, Vercel, Netlify — is in part the practice of executing on principles Heroku DX established. Twelve-Factor remains one of the most-cited DevRel-adjacent documents in modern software.

James Whittaker

Best known for. Software-quality researcher; Microsoft technical evangelist; later Google; author of How to Break Software, How Google Tests Software, and others.

Significance. Whittaker exemplified the technically-credentialled evangelist whose authority came not from corporate position but from independently respected research and writing. His tenure across Microsoft and Google showed that evangelism could be a senior career path for genuine technologists, not a marketing-adjacent demotion. How Google Tests Software (2012) defined how the industry thought about software-testing at scale during a particularly influential window.

Robert Scoble

Best known for. Microsoft technical evangelist, 2003 – 2006; corporate blogger pioneer; long subsequent career across multiple companies as an industry commentator.

Significance. Scoble’s blog (scobleizer.com) demonstrated that authentic individual voices, operating partly outside corporate communications control, could be more effective at developer engagement than press releases. He became the archetype of the “human face of a big company” evangelist. His occasional clashes with Microsoft’s marketing team underscored the structural tension between authentic voice and corporate messaging discipline — a tension every modern DevRel team still navigates. Scoble’s Channel 9 video work helped pioneer the corporate-video format that YouTube would later make universal.

Stephen O’Grady

Best known for. Co-founder of RedMonk (2002); author of The New Kingmakers: How Developers Conquered the World (O’Reilly, 2013); long-running blog at sogrady.me.

Significance. Through RedMonk’s developer-focused analyst work and The New Kingmakers, O’Grady articulated the strategic thesis that developers had become the dominant force in enterprise technology procurement, displacing traditional CIO-and-architect decision processes. This thesis underpinned every business case for serious DevRel investment from 2013 onward. The Software Paradox (2015) extended the analysis to commercial software’s pricing dynamics.

James Governor

Best known for. Co-founder of RedMonk (2002); long-running developer-trends analyst.

Significance. Where O’Grady wrote the thesis, Governor became the field’s most-cited public commentator on developer trends. He popularised vocabulary including “Progressive Delivery” and the framing of “GitHub Generation” / “Kubernetes Generation” developers. RedMonk’s Programming Language Rankings (started 2010, originally with Donnie Berkholz) shape industry perceptions of language popularity. Governor’s conference keynotes — particularly at All Things Open and Monki Gras (RedMonk’s own event) — anchor industry-conversation moments.

Jono Bacon

Best known for. Community manager for Ubuntu (Canonical) 2006 – 2014; author of The Art of Community (O’Reilly, 2012) and People Powered (HarperCollins, 2019); subsequent independent community-strategy consulting and writing.

Significance. The Art of Community (first edition 2009, second 2012) remains the most widely read book on building online and developer communities. Bacon’s framework — communities require purpose, structure, leadership, and recognition — shaped the design of programs from MongoDB Champions to the modern Discord-led developer-product community. His Ubuntu work at Canonical operationalised many of these ideas at substantial scale. His YouTube channel and ongoing consulting practice continue to shape the field’s thinking on community.

Mary Thengvall

Best known for. Author of The Business Value of Developer Relations (Apress, 2018); former Head of Developer Relations at multiple companies; long-running DevRel Weekly newsletter; co-host of Community Pulse podcast.

Significance. Thengvall’s book is the discipline’s first systematic treatment of return on investment in DevRel, providing the vocabulary executives use when defending the function in budget conversations. Her newsletter (DevRel Weekly) is one of the longest-running curated DevRel content streams. Through her Persea consulting practice, she has advised dozens of companies on DevRel strategy. She introduced the term Developer Qualified Lead (DQL) in 2019 — a framing that has stabilised in the field as the DevRel-vocabulary parallel to MQL and SQL.

Matthew Revell

Best known for. Founder of DevRelCon (2015) and Hoopy (DevRel agency, founded 2016); long-running organiser of the DevRel community. By 2026, leads developer-relations strategy and consulting at Major League Hacking.

Significance. Revell created the first dedicated conference for DevRel practitioners. DevRelCon has now been held in London, San Francisco, New York, Tokyo, Prague, Beijing, Suzhou, Bengaluru, and online. The conference series and the Hoopy agency together provided the institutional spine for the field’s professionalisation in the late 2010s and early 2020s. DeveloperRelations.com (Hoopy’s content property) hosts the substantial DevRelCon talk archive that subsequent practitioners learn from.

Phil Leggetter

Best known for. AAARRRP strategy framework (2016); long career in DevRel leadership at Pusher, Nexmo (later Vonage), and several others; DevRel.Agency consulting practice.

Significance. AAARRRP is one of the two or three most-cited strategy frameworks in DevRel; Leggetter’s blog and his DevRelCon talks have shaped how teams articulate the relationship between activities and business outcomes. His consulting work in the 2020s has focused on helping companies seed, grow, and scale DevRel from scratch. The “Awareness + Product” additions to McClure’s original AARRR funnel reflect what is now mainstream practice for developer-product growth measurement.

Christian Heilmann

Best known for. Mozilla, then Microsoft Edge, then Auth0/Okta DevRel; author of The Developer Advocacy Handbook (open-source); long career writing accessible technical content.

Significance. Heilmann’s Developer Advocacy Handbook is one of the field’s foundational practical guides — written before most companies even had advocates and freely available online ever since. His work on accessibility, web standards, and inclusive technical communication has shaped a generation of DevRel practitioners. His writing on conference speaking, code review for non-experts, and inclusive tech-event design are referenced repeatedly in DevRelCon talks.

Caroline Lewko and James Parton

Best known for. Co-authors of Developer Relations: How to Build and Grow a Successful Developer Program (Apress, 2021); long careers at SlashData (formerly VisionMobile) and the Developer Marketing Alliance.

Significance. Their 2021 book consolidated late-2010s practice into a single reference, including the Four Pillars framework (Developer Education, Marketing, Success, Programs) that now appears in dozens of company onboarding decks. SlashData’s State of the Developer Nation (twice-yearly, ongoing since 2010) and State of Developer Relations reports continue to provide the field’s only large-scale ongoing survey data on developer populations and DevRel practice.

Jeff Sandquist

Best known for. General Manager and Vice President at Microsoft Cloud Advocates, 2017 onward; earlier work on Channel 9.

Significance. Sandquist established Microsoft Cloud Advocates as a recognisable structure — distributed by geography and technology, cross-platform in scope, operating with structural autonomy from product marketing. The Cloud Advocates model influenced how many companies subsequently structured their advocacy functions. Earlier, his leadership of Channel 9 (alongside Lenn Pryor, Charles Torre, and Robert Scoble) helped establish the “unfiltered developer video” format that became universal.

Jeff Barr

Best known for. AWS Chief Evangelist since 2002.

Significance. One of the longest-tenured evangelists in technology. Barr has written the AWS Blog since AWS launched in 2006, and most major AWS announcements over two decades have flowed through his keyboard. The combination of consistency, voice, and product depth has made him a model for what individual evangelist work can compound to over decades. His re:Invent presence — both on stage and in the blog wrap-up posts — anchors the most-attended developer conference in the world.

Werner Vogels

Best known for. CTO of Amazon since 2004; primary technical voice for AWS at industry events.

Significance. Not formally DevRel, but Vogels’ role as a public technical leader at the largest cloud provider has been one of the most visible developer-facing functions in the industry. His “All Things Distributed” blog has been continuously published since 2003. His re:Invent keynotes — particularly the architecture-focused Thursday keynote — are the most-watched annual technical presentations in cloud computing. Vogels exemplifies the “executive-as-DevRel” pattern that many founder-CEOs at developer products subsequently adopted.

Kelsey Hightower

Best known for. Former Distinguished Engineer / Staff Developer Advocate at Google Cloud; key voice in the Kubernetes ecosystem; author of Kubernetes Up & Running; creator of Kubernetes The Hard Way.

Significance. Hightower’s blend of deep engineering credibility and brilliant public communication made him one of the most influential individual voices in cloud-native infrastructure. His live demos at KubeCon are referenced as the standard for what conference demonstration can be. Kubernetes The Hard Way — a free tutorial repository on GitHub — taught a generation of engineers Kubernetes from first principles. He retired from active Google Cloud DevRel work in 2023/2024 but continues to be a widely heard voice in industry conversations, particularly around platform engineering and developer tooling. See ./notable-works.md for full inventory.

Scott Hanselman

Best known for. Microsoft Cloud Advocate / Partner Program Manager (varied titles over the years); long-running blog hanselman.com (since 2002) and podcast Hanselminutes (weekly since 2006).

Significance. Hanselman bridged technical evangelism, accessible podcasting, and large-scale Microsoft community work for nearly two decades. His blog and podcast set standards for accessible developer-facing communication. His sustained advocacy for accessibility in software (and in conference and online communities), and his consistent willingness to engage with beginners as well as experts, made him a model for inclusive senior practice.

Brian Douglas (bdougie)

Best known for. First Developer Advocate at GitHub (2018 – 2022); founder of OpenSauced (2022).

Significance. Douglas’s GitHub work helped define what platform-DevRel could look like in the modern era. OpenSauced applies enterprise-grade analytics to open-source projects, an entirely new category. A widely cited mentor and voice on inclusion in open source. His “all-day” YouTube live-streams and the DevRel Distributed podcast extended his influence beyond formal DevRel work.

Dion Almaer and Ben Galbraith — the Ajaxian era

Treated as a single profile because their work was joint for most of two decades.

Best known for. Co-founding Ajaxian.com in 2005; technical leadership at Mozilla, Walmart Labs, Google, and other companies; deep involvement in the Web 2.0 / HTML5 transition and the popularisation of modern web development as a category.

Significance. Ajaxian was the canonical destination for web-developer news from 2005 through roughly 2012, covering Ajax techniques, JavaScript libraries (jQuery, Prototype, MooTools, Dojo, YUI), browser APIs, and the emergence of HTML5. The site shaped how a generation of front-end developers learned about new browser capabilities. Editorial collaboration with John Resig (jQuery), Brendan Eich, and many other front-end pioneers placed Almaer and Galbraith at the centre of the Web 2.0 conversation.

At Mozilla Labs (late 2000s / early 2010s), they led work on Bespin (later renamed Skywriter, then evolved as Ace) — one of the earliest browser-based code editors and an ancestor of the modern in-browser developer-environment category that includes CodeSandbox, StackBlitz, GitHub Codespaces, and Replit. The Ace editor itself remains in use embedded in many products.

Subsequent work included senior developer-platform roles at Walmart Labs (where they led the Lab’s open-source and platform work), at Google (helping shape developer-platform thinking), and at various other companies. Both have remained publicly active as advisors and writers.

Why they matter to modern DevRel. Ajaxian was an early demonstration that community-led editorial — substantive technical writing produced by practitioners, not vendors — could compete with vendor-marketing channels for developer mindshare. The model Ajaxian established directly influenced sites like Smashing Magazine, A List Apart, CSS-Tricks, dev.to, and even the editorial cultures of TheNewStack, InfoQ, and Console.dev.

John Resig

Best known for. Creator of jQuery (2006); long-running Mozilla / Khan Academy work; programming-education leadership at Khan Academy.

Significance. Resig is not a DevRel professional by title, but jQuery’s adoption — at its peak running on roughly 75% of websites measured — was sustained partly through what would now be recognised as exemplary DevRel work: highly accessible documentation, an active forum, a tight plugin ecosystem, predictable releases, and a maintainer who engaged candidly with the community. Pro JavaScript Techniques (Apress, 2006) and his blog at ejohn.org shaped how a generation of JavaScript developers learned the language. His subsequent work building Khan Academy’s computer-science curriculum reached millions of learners.

Brendan Eich

Best known for. Creator of JavaScript (1995, at Netscape, in ten days); co-founder of Mozilla; later founder of Brave.

Significance. Not formally a DevRel professional, but Eich’s sustained engagement with the JavaScript community — through TC39, conference keynotes, and public discussion — set a model for how a language creator can serve as a long-term steward and de facto advocate. JavaScript’s ecosystem evolution — through ES5, ES6/ES2015, and onward — has been shaped by Eich’s continued public engagement.

Douglas Crockford

Best known for. Discovery / formalisation of JSON; JavaScript: The Good Parts; long-running engagement with Yahoo’s developer community.

Significance. Crockford’s writing and conference talks shaped how the industry understood JavaScript as a serious language. JavaScript: The Good Parts (O’Reilly, 2008) remains one of the most-cited single books in the field’s history. Yahoo’s developer-engagement work in the mid-2000s, where Crockford was a senior technical voice, was a precursor to modern API-company DevRel.

Sara Chipps

Best known for. Co-founder of Girl Develop It (2010); engineering leadership at Stack Overflow; subsequent founder and investor work.

Significance. Girl Develop It was one of the earliest scaled programs aimed at bringing women into software development, with chapters across major US cities. Chipps’s leadership at Stack Overflow during the 2017–2020 period included substantial community-product work. Her influence on inclusion in technical communities has been substantial across two decades.

Anil Dash

Best known for. Co-founder of Six Apart (creators of Movable Type and TypePad); CEO of Glitch (formerly Fog Creek Software); long-running tech-industry writer.

Significance. Dash’s blog (anildash.com, running since 1999) was an early demonstration of how individual technical voices could shape industry conversation. His leadership of Glitch (2017–2022) maintained Glitch’s role as one of the most accessible browser-based developer environments. Sustained writing on developer culture, online community, and the responsibilities of tech companies. His work at the Civic Hall and Data & Society made him a connective figure between developer culture and tech-policy conversation.

Adam DuVander

Best known for. Long-running developer-marketing analyst voice; former editor at ProgrammableWeb; subsequent work at SendGrid, Zapier, and as an independent developer-marketing analyst.

Significance. ProgrammableWeb (founded 2005) was the definitive directory of public APIs through the 2010s. DuVander’s editorial leadership during that period established many of the conventions of how the industry thought about and discussed APIs. His subsequent writing on developer marketing, including the Developer Marketing newsletter and blog posts at everydeveloper.com, is widely read in DevRel circles.

Erica Joy Baker

Best known for. Engineering and community leadership at Slack, Patreon, GitHub, Mozilla, and other companies; sustained writing and speaking on inclusion in technology.

Significance. Baker’s voice has been one of the most consistent and substantive in industry conversations about race, inclusion, and the limits of tech-industry diversity programs. Influential as a writer, speaker, and senior community-engaged engineer across two decades. Her “Project Include” co-founding work helped operationalise inclusion-strategy thinking for many companies.

Joe Stagner

Best known for. Microsoft Developer & Platform Evangelism veteran; influential evangelism leader through the 2000s.

Significance. Part of Microsoft’s substantial DPE organisation during its peak years; one of many career-DPE evangelists whose work scaled Microsoft’s developer engagement across multiple product categories.

Tim Falls

Best known for. Former SendGrid / Twilio DevRel; influential template for API-company DevRel.

Significance. Helped shape SendGrid’s DevRel function during its growth phase pre-Twilio acquisition (acquired 2019). The SendGrid model — emphasis on developer-friendly documentation, generous free tier, technically credible advocates — became a template for many API-first companies.

Carter Rabasa

Best known for. Former Twilio DevRel; one of the architects of SIGNAL and the Twilio Quest-style community work; subsequent work in API DevRel and founding-team roles.

Significance. Rabasa’s leadership through Twilio’s high-growth years shaped what the field considers the canonical API-DevRel program — its conference cadence, its evangelist hiring model, its emphasis on hackathons, and its content-led acquisition funnel. Many subsequent API companies’ DevRel programs are recognisably influenced by the Twilio template he helped build.

Sherman Greenwood

Best known for. AWS Heroes program co-founder; long-running developer-community work at AWS.

Significance. Helped operationalise what became the gold-standard cloud-DevRel recognition program, which numerous later programs at MongoDB, HashiCorp, Cloudflare, Snowflake, and others modelled themselves on.

Sam Ramji

Best known for. Cisco / Apigee / Google Cloud / DataStax; sustained influence on developer-platform strategy.

Significance. Across multiple senior roles, Ramji has shaped how the industry thinks about API platforms, open-source-led commercial models, and developer-platform strategy. His tenure at Apigee (CEO from 2014, through the Google Cloud acquisition in 2016) bridged the API-management era and the cloud-platform era.

Eric S. Raymond

Best known for. The Cathedral and the Bazaar (1999); long-time open-source community organiser and writer.

Significance. Not DevRel by title, but the conceptual framework that Cathedral and Bazaar established — that distributed, community-led software development could outproduce centralised commercial development — underlies modern open-source-led commercial DevRel models. The Halloween Documents (leaked Microsoft internal memos with Raymond’s annotations) shaped the early 2000s industry conversation about open source.

Karl Fogel

Best known for. Producing Open Source Software (O’Reilly, 2005; continuously updated online); contributions to Subversion and other early OSS projects.

Significance. Producing Open Source Software is the canonical operational manual for running an open-source project; required reading for any DevRel professional whose product is open-source-led.

Founder-pioneers and language stewards

These figures are not DevRel professionals by title, but their sustained public engagement with their respective developer communities effectively functioned as DevRel and shaped how the field thinks about founder- and creator-led advocacy.

Linus Torvalds

Creator of Linux (1991) and Git (2005). His sustained presence in kernel-development conversation — through mailing-list communication, conference keynotes, and direct involvement in technical disputes — has been formative for open-source community culture, for better and for worse.

Guido van Rossum

Creator of Python (1991). Sustained engagement with the Python community across multiple decades as “Benevolent Dictator For Life” (until stepping back in 2018). The Python community’s growth and culture owe substantially to his sustained communicative presence.

James Gosling

Creator of Java (1995). Sustained presence at JavaOne, Devoxx, and adjacent Java-community events through Sun and after.

David Heinemeier Hansson (DHH)

Created Ruby on Rails (2004); partner at 37signals (now just Basecamp / HEY). Long-running founder-led DevRel through writing, conference speaking, and public discussion of business and technical decisions. Defined what founder-as-evangelist looks like at scale. Rebuilding Rails and the broader Rails-world conferences (RailsConf, Rails World) sit downstream of his sustained advocacy.

Patrick Collison and John Collison

Founders of Stripe (2010). Patrick in particular has maintained an unusually visible developer-facing public presence — through Stripe’s developer blog, his personal site (patrickcollison.com), and engagement in public technical discussions. The Stripe documentation culture is often described as “what happens when the founders care about docs.”

Mitchell Hashimoto and Armon Dadgar

Co-founders of HashiCorp (2012). Mitchell’s many KubeCon-equivalent talks and Armon’s architecture talks defined a founder-led-technical-evangelism pattern that competing infrastructure companies followed.

Bryan Cantrill

Sun / Joyent / Oxide Computer. Long-running senior voice on systems software and DevRel-adjacent technical communication. His conference talks (particularly the OxidizeConf / Monktoberfest / open-source-related events) are referenced as exemplars of high-substance public technical communication.

Liz Fong-Jones

Honeycomb. Long-running advocate for SRE practices, observability, and inclusion in tech. Senior visible voice on operational engineering culture across the 2010s and 2020s.

Other influential mid-career and adjacent figures

A longer list of substantial contributors who shaped portions of the field:

Eric Holscher. Read the Docs co-founder; Write the Docs co-founder. Defined modern documentation tooling and the technical-writing-as-community space.
Daniele Procida. Diátaxis framework (see ./notable-works.md).
Stephanie Hurlburt. Long-running graphics-programming community work; influential voice on technical-community culture.
Justin Garrison. AWS / Sidero Labs; substantial Kubernetes-community DevRel work.
Aja Hammerly. Firebase Studio (Google); long-running Ruby and education-focused community work.
Liz Rice. Isovalent / Cisco; container-security and eBPF advocacy; multiple O’Reilly books.
Tanya Janca. Independent (We Hack Purple); application-security advocacy.
Donnie Berkholz. Co-creator of the RedMonk Programming Language Rankings; subsequent industry-analyst and engineering leadership.
Jess Frazelle. Oxide / independent; sustained influence on systems-engineering and security communities.
Tom Hudson (TomNomNom). Independent; influential security-research and developer-tooling community work.