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Hire 18 Trusted TYPO3 Experts

typo3 experts - Hire 18 Trusted TYPO3 Experts

The global TYPO3 community thrives thanks to its outstanding contributors, innovators, and advocates.

This ranked list highlights the best TYPO3 experts from around the world. Each has excelled through open-source development, entrepreneurial leadership while still coding, influential blogging and speaking, impactful work at major organizations using TYPO3, or notable achievements that earned community acclaim. All of them remain active in the ecosystem today, pushing the CMS forward.

  1. Richard Haeser
  2. Alexander Kellner
  3. Benni Mack
  4. Michael Schams
  5. Daniel Goerz
  6. Oliver Hader
  7. Helmut Hummel
  8. Georg Ringer
  9. Claus Due
  10. Christian Kuhn
  11. Xavier Perseguers
  12. Jo Hasenau
  13. Larry Garfield
  14. Tymoteusz Motylewski
  15. Armin Vieweg
  16. Sanjay Chauhan
  17. Tim Lochmüller
  18. Anja Leichsenring

Now, let’s delve deeper into their remarkable journeys and lasting impacts on TYPO3:

Richard Haeser

YouTube Video

Nationality: Dutch

Richard Haeser is a prominent Dutch TYPO3 developer who has significantly shaped TYPO3’s feature set in recent versions. He was the original author of the SEO Extension that was integrated into TYPO3 core in v9, bringing built-in SEO capabilities like sitemap generation and meta tag management to the CMS.

Richard is an active Core Team member and Initiative lead – beyond SEO, he has led efforts on Headless CMS integration and Structured Content initiatives. He frequently shares knowledge through blogging (e.g., on his site richardhaeser.com) and at user group meetings in the Netherlands. Richard’s code contributions span from Extbase improvements to backend usability enhancements.

Richard’s blend of practical extension development and core contributions make him an influential voice in the community. He helps TYPO3 sites rank well and developers write cleaner code, embodying TYPO3’s spirit of continuous improvement.

Alexander Kellner

Nationality: German

Alexander Kellner is a TYPO3 developer best known as the creator of the Powermail extension, TYPO3’s most popular form-building extension. Powermail has been a staple in the TYPO3 community for over a decade, offering editors a powerful yet user-friendly way to create forms, and Alex’s work on it has been foundational.

He started Powermail in the TYPO3 4.x days and continued improving it through modern TYPO3 versions (with his team at in2code now maintaining it). Alex co-founded the agency in2code GmbH, which became a TYPO3 GmbH partner, and through it he contributed many other extensions and innovations (such as auxiliaries for GDPR compliance, and marketing tools like ext:launch).

Alex Kellner’s contributions go beyond coding: he often shares his insights at TYPO3 events and was featured in community interviews. Under his technical leadership, in2code also contributed significantly to core development.

Benni Mack

Benni Mack - Hire 18 Trusted TYPO3 Experts

Nationality: German

Benni Mack is the TYPO3 Core Project Lead and one of the driving forces behind TYPO3’s development in recent years.

A long-time contributor since 2007, Benni co-founded the Stuttgart-based TYPO3 agency b13, where he serves as CTO. He steers TYPO3’s technical roadmap and ensures a “masterpiece” level of code quality in the core. Under his leadership, TYPO3 has embraced modern PHP practices and regular release cycles. When not coding on the CMS, Benni coordinates community efforts and shares his expertise in keynotes and developer sessions. His passion for open source and automation often translates client needs into core improvements, fueling TYPO3’s ongoing innovation.

Michael Schams

Documentation is just as important as the code itself. A great feature is useless if nobody knows how to use it.

Nationality: Australian

Michael Schams is an Australian-based TYPO3 consultant, author, and community veteran with over a decade of active involvement. He is best known for writing and co-authoring several TYPO3 books that have become de facto standards for learning TYPO3. These include the TYPO3 Extbase & Fluid Book and the official study guides for TYPO3 certifications.

Michael has contributed to the TYPO3 core and documentation, and he often serves as a voice of the community’s best practices. He writes articles for tech journals and frequently publishes TYPO3 release summaries and insights, keeping the community informed. Having started with TYPO3 in the early 2000s (first TYPO3 3.x) and moving to Melbourne in 2008, Michael brings a global perspective. He has been a TYPO3 Association member and worked on initiatives like promoting TYPO3 in the APAC region.

In addition to writing, Michael contributes code – for example, he has helped with the core’s composer integration and core testing framework. He holds a Master’s in Computer Science and applies rigorous engineering discipline to his TYPO3 projects.

Daniel Goerz

Nationality: German

Daniel Goerz is a German TYPO3 developer and blogger who runs the popular site useTYPO3.com, a rich resource for TYPO3 tutorials and tips. As an active core contributor and framework merger, Daniel not only writes about TYPO3 – he’s directly improving it.

He has been involved in the core since around TYPO3 v8 and was officially welcomed as a framework merger in the core team’s restructuring. Daniel’s expertise lies in Extbase (TYPO3’s MVC framework) and frontend integration; he often publishes in-depth guides on these topics. Many in the community know him from his blog’s “TYPO3 Explained” series, where he breaks down complex concepts for a wider audience.

Professionally, Daniel works at a TYPO3 agency (formerly at Sitegeist) and has implemented numerous enterprise projects. He also shares knowledge via talks at TYPO3 Developer Days and user groups.

Oliver Hader

Oliver Hader - Hire 18 Trusted TYPO3 Experts

Nationality: German

Oliver Hader is the TYPO3 Core Co-Project Lead alongside Benni Mack and a veteran core developer. Active since 2005 and a Core Team member since 2007, Oliver has contributed fundamentally to TYPO3’s stability and security.

He served for years as the head of the TYPO3 Security Team, ensuring the CMS’s renowned security standards. Oliver has a background in computer science research and often bridges academic insight with practical development for TYPO3. Based in Bavaria, he has helped shape TYPO3’s direction through various roles – from core code mergers to Association leadership. With a career spanning core development, security oversight, and community guidance, Oliver’s holistic understanding of TYPO3 makes him an indispensable expert in the project’s past, present, and future.

Helmut Hummel

Nationality: German

Helmut Hummel is the TYPO3 CMS Security Team Leader and a long-time TYPO3 Core Team developer. Widely respected for his expertise in web application security, Helmut has been safeguarding TYPO3’s codebase and guiding its security posture for many years.

He contributed critical features like the salted passwords mechanism and numerous hardening improvements to the CMS. Helmut is also known for automating workflows and promoting Composer-based distributions for TYPO3. A freelance software architect and consultant in Germany, he exemplifies the blend of client work and open-source contribution. Helmut’s philosophy is, “if I use open-source software and I’m capable of improving it, I’ll do so”, and he’s lived up to that motto by continuously enhancing TYPO3 since the 3.x days. His leadership ensures TYPO3 remains one of the most secure enterprise CMS platforms.

Georg Ringer

Georg Ringer - Hire 18 Trusted TYPO3 Experts

Nationality: Austrian

Georg Ringer is affectionately known as the “TYPO3 News Guy” for his work creating and maintaining the immensely popular News extension for TYPO3. Over the past decade, Georg has published several extensions that became staples in the TYPO3 ecosystem.

His News plugin, in particular, is a flexible system for managing news and articles, used on countless TYPO3 sites worldwide. Georg’s deep knowledge of TYPO3 extensions and best practices has made him a go-to expert for integrating custom functionality. He has also contributed to TYPO3 core (he is listed as a Framework Merger on the core team) and helped implement modern security and coding standards in the project. Based in Austria, Georg speaks frequently at TYPO3 camps and shares insights on extension development and TYPO3’s future. His commitment to usability and accessibility in his projects (he likens them to “chocolate in cookies” – best added from the start) reflects in TYPO3’s frontend user experience.

Claus Due

Nationality: Danish

Claus Due is the “Fluid Man” of TYPO3 – the chief architect and maintainer of the Fluid templating engine and related integrations. Involved with TYPO3 for over 12 years, Claus has been a core merger responsible for the Fluid rendering framework, as well as caching and performance improvements in the core.

He transformed Fluid into a standalone PHP package in 2016, which has been used in TYPO3 since v8. Claus started out building TYPO3 extensions and gradually began submitting core patches, eventually taking ownership of major subsystems. He also created popular extension frameworks like Flux and Fluid Content, empowering integrators to build custom content elements more easily. As a freelance developer in Denmark, Claus contributes an immense amount of time to open source – maintaining high-profile extension collections and encouraging his clients to open-source their TYPO3 solutions.

His dedication over a decade of publishing and supporting TYPO3 add-ons has significantly shaped TYPO3’s flexibility in content rendering. Claus’s influence ensures TYPO3’s frontend templating remains powerful and modern.

Christian Kuhn

Nationality: German

Christian Kuhn has been a major force in TYPO3 core development for many years, known by the community under the nickname “Lolli.” He started contributing to TYPO3 back in 2007 and today is involved in most of the core’s main architectural improvements.

Christian led or significantly contributed to critical subsystems: he revamped the Install Tool, engineered the new Form Engine, and spearheaded the modern workspaces and caching frameworks. A long-time Core Team member and Framework Merger, he focuses on code quality, testing infrastructure, and sustainable architecture for TYPO3.

Christian recently joined the TYPO3 agency b13, where he dedicates a large portion of his time to working on TYPO3 core full-time. He is an advocate for professionalizing open-source development and often shares insights on TYPO3’s continuous integration and QA (Quality Assurance) processes.

Xavier Perseguers

Xavier Perseguers - Hire 18 Trusted TYPO3 Experts

Nationality: Swiss

Xavier Perseguers is a Swiss TYPO3 expert and a long-standing core developer who has worn many hats in the community. He is well-known for his work on TYPO3’s documentation and for co-authoring TYPO3 Extensions Cookbook and other guides.

As a core developer, Xavier contributed significant features and fixes, especially during the TYPO3 4.x and 6.x era, including the introduction of smooth migration tools and the Extension Manager improvements. He has been a frequent speaker at TYPO3 events, sharing knowledge on advanced topics like multi-tier architectures and database replication with TYPO3. Professionally, Xavier works at the Swiss Federal Institute (CERN) and leveraged TYPO3 for high-profile scientific web platforms.

Xavier’s dedication to TYPO3’s ecosystem includes maintaining popular extensions (such as the solr integration in earlier days) and serving on the TYPO3 Association’s Certification Team.

Jo Hasenau

Nationality: German

Jo Hasenau is a veteran TYPO3 developer and mentor who has been part of the community since 2002. He is the lead developer of the Grid Elements (gridelements) extension, which introduced a revolutionary content layout system to TYPO3.

Gridelements allows backend users to define flexible grid layouts with nested content, vastly improving TYPO3’s layout capabilities well before they were in the core. Jo is also the maintainer of the Localization Manager (l10nmgr) extension, a tool widely used for translating TYPO3 sites. These solutions are “widely used in the TYPO3 ecosystem”, cementing Jo’s status as an expert. He is an experienced international speaker and even co-authored the O’Reilly TYPO3 Cookbook, sharing best practices with developers worldwide.

Professionally, Jo serves as CTO of InnoCoding GmbH and also runs a family business, Cybercraft, which provides long-term TYPO3 extension support via the Coders.Care platform. His decades of experience, from writing core extensions to educating the next generation, make Jo Hasenau one of TYPO3’s most influential and respected figures.

Larry Garfield

Larry Garfield - Hire 18 Trusted TYPO3 Experts

Nationality: American

Larry Garfield is a well-known figure in the PHP community who joined the TYPO3 project in 2021 as a core developer. Based in the USA, Larry brings a wealth of experience from his previous role as a Drupal core developer and architect.

Embraced by the TYPO3 community as a “newbie” from outside, he quickly applied his expertise to modernize TYPO3’s codebase and workflows. Larry is a proponent of clean, maintainable code and has helped TYPO3 adopt more PHP-FIG standards (PSRs) and embrace functional programming concepts. He authored the book Thinking Functionally in PHP and has been sharing those principles to improve TYPO3’s internal APIs. In TYPO3 core, Larry focuses on shaving down legacy cruft – he’s known for helping “drag codebases forward and trim out the stuff that accrues over time”, a skill he prides himself on.

As a developer advocate, he also writes and speaks about TYPO3 to broader audiences, raising the CMS’s profile globally. Larry’s cross-project perspective and fresh ideas have been invaluable in keeping TYPO3 technically relevant and appealing to developers beyond its traditional strongholds.

Tymoteusz Motylewski

Nationality: Polish

Tymoteusz Motylewski is a Polish TYPO3 expert who has contributed to the project in almost every way possible. With 13+ years in the community, he has been a TYPO3 Core Team member, extension author, conference speaker, and even a TYPO3 Association Board candidate.

Tymoteusz is perhaps best known for leading the TYPO3 Headless Initiative, opening TYPO3 to modern headless CMS use-cases and building an ecosystem around it. He has developed and maintained important extensions and also contributed core patches focusing on API and output flexibility. Additionally, Tymoteusz has worked on improving documentation (creating better search functionality) and started the International TYPO3 Mentorship Program to onboard new talent.

Currently running a TYPO3 agency, he bridges technical and business worlds. Tymoteusz’s broad experience, from coding to community organizing, and his work to push TYPO3 into new markets (like headless and non-European regions) make him one of the top TYPO3 evangelists and innovators.

Armin Vieweg

Nationality: German

Armin Vieweg is a TYPO3 developer known for creating some of the most widely used backend extensions, in particular the Dynamic Content Elements (DCE) extension. DCE provides a framework for integrators to create custom content elements with ease, and has been touted as the “best FlexForm based content elements since 2012”.

Armin developed DCE over a decade ago and has maintained it through numerous TYPO3 versions, empowering editors with flexible content beyond the core’s defaults. He has also created other handy extensions such as “min” (for output compression) and contributed to open source tools like editorconfig validation for PHP.

Armin has been an active TYPO3 Core contributor as well – he was a member of the core team and regularly submits patches, especially in the frontend and integration areas. Formerly part of the in2code agency in Austria/Germany, Armin now continues his TYPO3 work in the community as a freelancer.

Sanjay Chauhan

Sanjay Chauhan - Hire 18 Trusted TYPO3 Experts

Nationality: Indian

Sanjay Chauhan is a TYPO3 technopreneur from India who has been a driving force in expanding TYPO3’s global reach. Active in the community for over 15 years, Sanjay co-founded NITSAN in 2011 – an award-winning TYPO3 agency that became a TYPO3 Association Gold Member and a prolific contributor.

As CTO of NITSAN, he has overseen the development of 120+ TYPO3 extensions (with over 500,000 downloads) and launched platforms like T3Planet, the first TYPO3 marketplace for templates and extensions. Sanjay is a passionate community builder: he has organized TYPO3 Code Sprints in India, spoken at numerous TYPO3 Conferences and Developer Days worldwide, and published hundreds of TYPO3 blog posts to help onboard newcomers.

Sanjay’s entrepreneurial ventures – from accessibility solutions (Accesstive) to SaaS website builders (T3Karma) – all center around making TYPO3 more accessible and useful to everyone. Through mentorship and evangelism, he’s expanded TYPO3’s adoption beyond Europe, truly living his mission to “bring our community’s spirit to more people around the world”.

Tim Lochmüller

Nationality: German

Tim Lochmüller is a well-known TYPO3 expert, both for his development skills and his long-running German-language TYPO3 blog “typo3blogger.de.” Active in the community since the 2000s, Tim has authored and maintained popular extensions, such as the ke_search extension and cs_seo.

He also contributed to the realurl extension in its early days and various other projects. Tim’s blog has been a go-to news source for TYPO3 developers, covering new releases and hidden features, which earned him recognition among the top TYPO3 bloggers. As a developer, he has a keen focus on performance and clean code. He’s participated in core development sprints and code reviews, helping to modernize TYPO3’s codebase.

Tim often speaks at TYPO3 camps and shares his experiences, encouraging others to contribute. Professionally, he worked with organizations like DFVA and is now at dmr focusing on TYPO3 projects. Tim’s influence spans providing useful tools, knowledge sharing, and direct code contributions. His sustained involvement over the years makes him one of the community’s familiar and trusted experts.

Anja Leichsenring

Nationality: German

Anja Leichsenring is a senior TYPO3 core developer and a champion for quality assurance in the project. She started with TYPO3 in 2007 and eventually joined the TYPO3 GmbH core team in 2016, where she worked until 2019.

In her spare time, Anja remains an active TYPO3 core contributor and code sprint organizer. She is often called the “TYPO3 Core Warrior” for her relentless work on improving the core’s stability and tests. Anja has been heavily involved in TYPO3’s testing infrastructure, continuous integration setup, and automated release processes.

Anja is also known for her focus on Extbase and Fluid – she has taught many training sessions on extension development with these frameworks. Beyond coding, Anja helps foster community, frequently appearing at TYPO3 Developer Days and participating in the TYPO3 User Experience Week to improve usability.

Wrap Up

These legends represent exceptional talent, making them extremely challenging to headhunt. However, there are thousands of other highly skilled IT professionals available to hire with our help. Contact us, and we will be happy to discuss your hiring needs.

Note: We’ve dedicated significant time and effort to creating and verifying this curated list of top talent. However, if you believe a correction or addition is needed, feel free to reach out. We’ll gladly review and update the page.

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