Join us on Tuesday, 21st May, at 5pm BST / 6pm CEST / 11am CDT / 9am PDT to hear Michael Basil, from Dojo Center and SAP, & Bill Westfall, from Dojo Center, discuss

Insightful Learning - InnerSource Dojo Way.

Join us on Thursday, May 23rd, at 9am BST / 10pm CEST / 1:30pm IST / 6pm AES, when Clare Dillon, from University of Galway, Ireland, will discuss the State of InnerSource 2024
Spring Summit 2018

Spring Summit 2018

May 16-18 Wed-Fri near Stuttgart, Germany

Pictures and Videos

The ISC.S6 is a wrap! Thanks to all attendees for making this summit such an engaging and interesting one!

ISC.S6 Crowd

We have published the first videos on the InnerSource Commons YouTube channel:

ISC.S6 Videos

The authors of these videos have released them for sharing under the Creative Commons license (CC BY).

Agenda and speakers

Wednesday, May 16th

08:45 - 09:00 Opening
09:00 - 09:45 Dr. Stefan Ferber (Robert Bosch) Keynote: Teaching Old Dogs New Tricks (Show Abstract)
09:45 - 10:30 Coffee Break
10:30 - 10:45 Danese Cooper (PayPal)
Jim Jagielski
Georg Grütter (Robert Bosch)
Why InnerSource matters (Show Abstract)
10:45 - 11:30 Russ Rutledge (Nike) Growing an InnerSource Program (Show Abstract)
11:30 - 12:00 Sungjin Lee (Samsung) Case Study for Edge Platform InnerSource Initiative using EdgeX Foundry Open Source Project. (Show Abstract)
12:00 - 13:30 Lunch Break
13:30 - 14:15 Prof. Dr. Dirk Riehle (FAU Erlangen) Keynote: Ten years of InnerSource case studies and our conclusions (Show Abstract)
14:15 - 15:15 Poster Sessions
Adam Baratz (Wayfair) Working Groups as Wayfair (Show Abstract)
Alexander Dais (Robert Bosch GmbH) Prototyping in Bosch Internal Open Source (Show Abstract)
Kristof Van Tomme (Pronovix) Innersourcing Developer eXperience: API engagement behind the firewall (Show Abstract)
Georg Grütter (Robert Bosch) Bosch Internal Open Source - Empowering Fellow Engineers with APIs (Show Abstract)
Shelly Nezri (Elbit Systems Ltd) InnerSource Advice Booth (Show Abstract)
15:15 - 15:45 Coffe Break
15:45 - 16:15 Michael Dorner (FAU Erlangen> Mine InnerSource best practices from Open Source (Show Abstract)
16:15 - 17:00 Daniel Izquierdo (Bitergia) Defining a metrics strategy and measuring collaboration (Show Abstract)
17:00 - 17:30 Maximilian Capraro (FAU Erlangen) The Patch-Flow Method - For Measuring InnerSource Collaboration (Show Abstract)
17:30 - 17:45 Closing
19:00 - 22:00 Social Event

Thursday, May 17th

09:00 - 09:15 Opening
09:15 - 10:00 Lauri Apple Workday Keynote: Building Trust with Intentional Relationship Design (Show Abstract)
10:00 - 10:30 Coffe Break
10:30 - 11:00 Rekha Joshi (Microsoft) Culture Shift With InnerSource (Show Abstract)
11:00 - 11:30 Ori Orenbach (Amdocs) Inner Source our Cloud Native Enterprise platform to make a cultural game changer (Show Abstract)
11:30 - 12:00 Erin Bank (CA Technologies)
Danese Cooper (PayPal)
Georg Grütter (Robert Bosch)
Russ Rutledge (Nike)
Panel: Setting Your InnerSource Journey Up For Failure (Show Abstract)
12:00 - 13:30 Lunch Break
13:30 - 14:00 Erin Bank (CA Technologies)
Daniel Izquierdo (Bitergia)
Georg Grütter (Robert Bosch)
Russ Rutledge (Nike)
Klaas-Jan Stol (University College Cork)
Tim Yao (Nokia)
InnerSource Patterns (Part 1): Together we can build the roadmap for success! (Show Abstract)
14:00 - 14:30 Tim Yao (Nokia) Thoughts on an InnerSource Pattern Language (Show Abstract)
14:30 - 15:00 Daniel Izquierdo (Bitergia)
Jorge Herrera (Entelgy)
Are maturity models needed in InnerSource? (Show Abstract)
15:00 - 15:15 Closing
15:20 - 19:00 Special Event

Friday, May 18th

09:00 - 09:15 Opening
09:15 - 10:00 Karsten Gerloff (Siemens) Keynote: Karsten Gerloff: Committing (to) change: The Siemens Software Management System (Show Abstract)
10:00 - 10:30 Coffee Break
10:30 - 11:00 Robert Hansel (Robert Bosch) Hack Your Desktop - An InnerSource Approach For The Developer Desktop at Bosch (Show Abstract)
11:00 - 12:00 Erin Bank (CA Technologies) InnerSource Patterns (Part 2): Together we can build the roadmap for success! (Show Abstract)
12:00 - 13:15 Lunch Break
13:15 - 13:45 Spiros Aktipis (Nokia) Inner sourcing - Fantastic, Forgettable or a Spiritual pursuit? (Show Abstract)
13:45 - 14:15 Maximilian Capraro (FAU Erlangen) A Classification Framework for InnerSource Projects and Programs (Show Abstract)
14:15 - 14:45 Israel Herraiz (BBVA) Notebooks are not enough: How InnerSource Can Make Data Science Better (Show Abstract)
14:45 - 15:15 Coffe Break
15:15 - 15:45 Johannes Nicolai (GitHub)
Marko Berkovic (GitHub)
Inner Source Success Metrics that satisfy upper management and do not frustrate developers (Show Abstract)
15:45 - 16:30 Russ Rutledge (Nike) An Oriole for InnerSource (Show Abstract)
16:30 - 17:15 Closing

Our Keynote Speakers

Dr. Stefan Ferber

Dr. Stefan Ferber

Dr. Stefan Ferber has been Chairman of the Executive Board of Bosch Software Innovations GmbH since January 1, 2018. He has direct management responsibility for product development, business development, sales & marketing as well as HR, finance & controlling. Stefan Ferber currently represents Bosch on the board of the Eclipse Foundation and is a member of the European Internet of Things Council. Stefan has more than 25 years’ experience in software development, software processes, software product lines, and software architectures for embedded systems, computer vision, and IT domains.

Dr. Ferber holds an undergraduate degree and a Ph.D. in computer science from the University of Karlsruhe, Germany and an M.Sc. in computer science from the University of Massachusetts Dartmouth, USA. He is a certified ATAM lead evaluator by the Software Engineering Institute of Carnegie Mellon University, Pittsburgh, USA.

Today, we know that InnerSource is a great way to efficiently develop software by leveraging communities that transcend organizational and geographical boundaries aka silos. We also know now, that InnerSource is an excellent segway into true Open Source development for companies lacking a software DNA. Back when Bosch started with InnerSource, there was not enough technical, legal, collaboration, social, and commercial experience within Bosch to start open source right away.

Getting an InnerSource initiative off the ground in such a setting is challenging. Stefan will go back to the origins of InnerSource at Bosch and share the surprising story of how he managed convince upper management to engage in InnerSource using rather unconventional means. This included three key elements:

  1. start with InnerSource first and not with open source right away,
  2. start with tooling (here Eclipse IDE for automotive) and not with the Bosch products and
  3. start with “capturing the nations flag” and not with slides.

Now Stefan is proud that Bosch is active contributing to Eclipse Internet of Things projects.

Prof. Dr. Dirk Riehle

Prof. Dr. Dirk Riehle

Prof. Dr. Dirk Riehle, M.B.A., is the Professor of Open Source Software at the Friedrich-Alexander University of Erlangen-Nürnberg. Before joining academia, Riehle led the Open Source Research Group at SAP Labs, LLC, in Palo Alto, California (Silicon Valley). Riehle founded the Open Symposium, now the international conference on open collaboration. He was also the lead architect of the first UML virtual machine. He is interested in open source and inner source software engineering, agile software development methods, complexity science and human collaboration, and software system architecture, design, and implementation. Prof. Riehle holds a Ph.D. in computer science from ETH Zürich and an M.B.A. from Stanford Graduate School of Business. He welcomes email at, blogs at, and tweets as @dirkriehle.

Ten years of inner source case studies and our conclusions

In 2006, I introduced inner source to SAP. After becoming a professor, my group helped further companies introduce inner source. Using three generations of projects, we report about our experiences and how we turn those into a practical handbook for inner source governance.

Lauri Apple

Lauri Apple

Based in Dublin, Ireland, Lauri Apple is senior program manager with Workday's public cloud team, and the creator of the Awesome Leadership and Management List and Feedmereadmes. Before joining Workday she was the open source evangelist and an agile coach/project manager at Zalando in Berlin, Germany, and the tech evangelist at Gilt Groupe in New York City. Her life before technology included stints as a journalist, blogger and media strategist. She graduated from the Benjamin N. Cardozo School of Law, focusing on IP.

Building Trust with Intentional Relationship Design

Disagreements and misunderstandings are common even in the most high-performing organizations. Fortunately, a potential solution offers us a path forward from vagueness and confusion: intentional relationship design. Taken from the therapeutic profession, IRD enables us to establish clarity in our work relationships early on so we can avoid conflict later. In this talk, I'll show how you can use it to establish expectations, set boundaries and uncover communication preferences to build trust and harmony—especially as your teams aim to InnerSource.

Karsten Gerloff

Karsten Gerloff

Having worked at the intersection of technology, policy and law for more than a decade, Karsten Gerloff is helping Siemens make use of the full potential of Open Source Software. Before joining Siemens in 2015, he worked for six years as president of the Free Software Foundation Europe (, where he focused on European technology policy and advocacy. At the United Nations University in Maastricht (The Netherlands), he researched the social and economic implications of Open Source Software.

Committing (to) change: The Siemens Software Management System

The Siemens Inner Source platform started as a way for one division to maintain a standard stack across its product range. From these beginnings, it quickly grew into something much bigger: A state-of-the-art development environment, a tool to build platforms within the company. It also became a highly visible example for a collaborative, agile way of working within Siemens. In this keynote, we will review the platform´s history and the key reasons for its success so far, as well as challenges past and present.

Conference Speakers

Spiros Aktipis photo

Spiros Aktipis

Having in total 16 years’ of experience in the telecommunications industry specialized in Software Development and Project / Program Management. With a proven track record of leading (as Program Manager) complex & multi-location programs/projects across different Core products & business portfolios during the last 8 years. Currently working as Inner source project manager in NOKIA for Telecommunication Core Networks. Responsible for driving the execution of Inner Source program (against the agreed targets) across different MN Cloud Core products in the development organization of 3000 people or so.

Erin Bank photo

Erin Bank

Erin Bank has 20 years of experience in engineering program management and technical communications in North America and abroad. Erin is an Advisor of Engineering Program Management for the CA Technologies Office of the CTO, where she built and currently drives the Inner Source program for CA Product Development. Erin also drives strategic transformation for the CA Accelerator program, where internal innovators receive support and funding to get new products into market. She is a contributing member of InnerSource Commons, committed to establishing inner source best practices with the community. Erin is also an elected member of the CA Council for Technical Excellence, and has Lean Six Sigma and Pragmatic certification.

Adam Baratz photo

Adam Baratz

Adam is a Director of Engineering at Wayfair. He leads the Boston-based teams that build the upper funnel customer experience and the Storefront teams in Wayfair’s Berlin office. He also participates in architecture reviews for department-wide projects. He incorporated Inner Source concepts into these processes to make more effective working groups that are capable of influencing engineering practices across a 1200-person department.

Marko Berkovic photo

Marko Berkovic

Marko is passionate about the power of software, how it is improving our lives, and transforming every single industry on the planet. At GitHub Marko is helping large businesses in Europe transform how they deliver better software, keep their developers happy, attract talent, and reuse code.

Maximilian Capraro photo

Maximilian Capraro

Maximilian Capraro is a researcher and working toward the PhD degree at the Open Source Research Group at Friedrich-Alexander-University Erlangen-Nuernberg. He received the BEng degree in information and communication technology from the BA Eisenach and the MSc degree in computer science from the Friedrich-Alexander-University. He is alumnus of the Siemens Masters Program. Max worked on inner source in research projects with a variety of companies including Black Duck Software, Continental, and multiple Siemens business units. He developed the patch-flow measurement method (for measuring software development collaboration) and the first classification framework for inner source projects and programs. His research interests include quantification of software development collaboration, inner source and open source software engineering, software code and process metrics, and software architecture, design and implementation.

Danese Cooper photo

Danese Cooper

Ms. Danese Cooper has been the Head of Open Source Software at PayPal, Inc. since February 2014. She was Chairperson of the Node.js Foundation from June 2015 through June 2017, and continues to serve on that board. Ms. Cooper previously served as the CTO of Wikimedia Foundation, Inc., as Chief Open Source Evangelist for Sun and as Sr. Director of Open Source Strategies for Intel. She concentrates on creating healthy open source communities and has served on the Boards of the Drupal Association, the Open Source Initiative, the Open Hardware Association and has advised Mozilla and the Apache Software Foundation, where she has been a Member since 2005. She also runs a successful open source consultancy which counts Bill & Melinda Gates Foundation, SETI Foundation, Harris Corporation and Numenta as clients. She has been known to knit through meetings.

Alexander Dais photo

Alexander Dais

Alexander is a software developer working for Bosch Engineering. Since 2005 he has worked in different areas at Bosch from testing verhicle dynamics software to developing for car multimedia devices. 2011 Alexander joined the InnerSource movement at Bosch in 2011, since 2015 he leads a community.

Michael Dorner photo

Michael Dorner

Michael Dorner, M.Sc., is a researcher and a PhD candidate at the Professorship for Open Source Software at Friedrich-Alexander University in Erlangen-Nürnberg, Germany. Previously he worked in R&D of Siemens Audiology for two years, specializing in machine learning and real-time systems. Michael worked on inner source in research projects with a variety of companies including Continental and multiple Siemens business units. His current research focus is inner source governance and inner source quality assurance.

Georg Grütter photo

Georg Grütter

Georg Grütter is a Senior Expert at Bosch Corporate Research and a founding member of the InnerSource activities at Bosch. He is driving the adoption of InnerSource within Bosch as an evangelist and as a developer since 2009. Georg is also a passionate software craftsman with over 30 years of experience. Previously, he worked for Daimler Chrysler as a researcher, the Zurich System House as a software engineer, and the Line Information GmbH as a consultant. Georg has created two open source projects, XHSI and stashNotifier. He is an avid recumbent cyclist, mountainbiker, stargazer and generally collects way too many hobbies.

Robert Hansel photo

Robert Hansel

Robert is a founding member of the Social Coding Initiative at Bosch, in which he is driving the adoption of InnerSource within Bosch as a Social Coding Evangelist. Over his ten year career in software development, Robert has worked in different technical areas from laboratory equipment to automotive components before he joined Bosch in 2011. He joined the InnerSource movement at Bosch in 2012, has led his own community and was part of the Social Coding team before joining the Bosch Center for Artificial Intelligence where he continues to promote Social Coding within Bosch. He is a passionate motorbike rider and a proud father of his little son which consumes nearly every bit of his spare time.

Israel Herraiz photo

Israel Herraiz

Israel Herraiz is a senior data scientist at BBVA Data & Analytics and director of the Master in Data Science at KSchool.

Jorge Herrera photo

Jorge Herrera

Jorge Herrera is an agility enthusiast, currently working as Technical Manager for Entelgy. Fully convinced about incoming disruptive ways of work, through open source and InnerSource practices and new organizational structures. After several years developing software and managing teams, now my objective is helping developers to work easy, funny, and productive.

Daniel Izquierdo photo

Daniel Izquierdo

Daniel Izquierdo Cortazar is a researcher and one of the founders of Bitergia, a company that provides software analytics for open source ecosystems. Currently the chief data officer at Bitergia, he is focused on the quality of the data, research of new metrics, analysis, and studies of interest for Bitergia customers via data mining and processing. Daniel holds a PhD in free software engineering from the Universidad Rey Juan Carlos in Madrid, where he focused on the analysis of buggy developers activity patterns in the Mozilla community.

Jim Jagielski photo

Jim Jagielski

Jim Jagielski is a well known and acknowledged expert and visionary in Open Source, an accomplished coder, and frequent engaging presenter on all things Open, Web and Cloud related. As a developer, he’s made substantial code contributions to just about every core technology behind the Internet and Web and in 2012 was awarded the O’Reilly Open Source Award and in 2015 received the Innovation Luminary Award from the EU. He is likely best known as one of the developers and co-founders of the Apache Software Foundation, where he has previously served as both Chairman and President and where he’s been on the Board Of Directors since day one. Currently he is Vice-Chairman. He’s served as President of the Outercurve Foundation and was also a director of the Open Source Initiative (OSI). Up until recently, he worked at Capital One as a Sr. Director in the Tech Fellows program. He credits his wife Eileen in keeping him sane.

Rekha Joshi photo

Rekha Joshi

Rekha Joshi is a Principal Engineer for Cloud and AI Platforms at Microsoft, where she is responsible for architecture and implementation of large-scale intelligent distributed platform solutions. Previously, she has delivered large-scale personalized solutions for Intuit and for internet scale at Yahoo!. Rekha has worked in diverse domains of finance, advertising, supply chain, AI and research. Her refueling stops include reading Issac Asimov, Richard Feynman, PG Wodehouse and stalking Elon Musk.

Sungjin Lee photo

Sungjin Lee

Sungjin is the Program Manager for Open Source Technology in Samsung Research. He has engaged partners and developers to make innovative mobile applications based on current and future technologies as well as evangelising the Tizen and Samsung Platforms. He has been working in the technology industry for 15 years, including Embedded Systems, Home Network and Connected Devices, Mobile Platforms and Open Source Platform Ecosystem.

Shelly Nezri photo

Shelly Nezri

Shelly Nezri is an open source and inner source evangelist, in charge of fun and gamification in the workplace :)

Johannes Nicolai photo

Johannes Nicolai

Johannes is an Open Source enthusiast working for GitHub. He is helping large companies in the DACH and Eastern European region to build large internal software communities. Before GitHub, he was leading multiple Java development teams across the world building large Git backends and integration platforms.

Ori Orenbach photo

Ori Orenbach

I am a development manager of a technology foundations group at Amdocs, developing Cloud Native platforms for a micro services architecture. I have a vast experience as developer, Team Lead, Development Lead and few managerial roles in developing technologies in Amdocs focused on non functional stack like security, monitoring, logging, deployment and more. As a part of my role, I am leading an inner source initiative in the company, which allows other business units to contribute to our foundations platform

Russ Rutledge photo

Russ Rutledge

Russ Rutledge is the lead of Nike’s Community Core team. This startup within Nike culls the process and tools to encourage and foster cross-team and community interaction and development. His drive and passion is to enable all software engineers to achieve incredible technical and business throughput via quality tooling and streamlined work process.

Prior to this role Russ ran another successful startup delivering JavaScript continuous delivery solutions to hundreds of projects throughout Nike via inner source principles. Previous experience includes feature and infrastructure development at Microsoft on the Outlook and OneDrive consumer web sites.

Klaas-Jan Stol photo

Klaas-Jan Stol

Dr. Klaas-Jan Stol is a Lecturer with the School of Computer Science and Technology at University College Cork. Previously he worked as a Research Fellow with Lero—the Irish Software Research Centre. He holds a PhD in software engineering from the University of Limerick on Open and InnerSource. He conducts research on contemporary software development methods and strategies, including InnerSource, Open Source, crowdsourcing, and agile and lean methods. His work on InnerSource has been published in several top journals and magazines including ACM Transactions on Software Engineering and Methodology and IEEE Transactions on Software Engineering. In a previous life, he was a contributor to the Perl 6 open source project.

Kristof Van Tomme photo

Kristof Van Tomme

Kristof Van Tomme is an open source strategist and architect. He is the CEO and co-founder of Pronovix, a consultancy that specialises in developer portals for API programs. As part of this specialisation Pronovix is working on an open source “Docs like Code” developer portal distribution for Drupal.

For a few years Kristof has been building bridges between the documentation, API and Drupal communities. He shares his time between Belgium where he lives with his family, Hungary where Pronovix has its office, and London where he started the local Write the Docs meetup. Kristof is an advisory board member of the Drupal Association, former nomination committee chair and co-organiser/initiator of a string of events including Drupalcon Szeged 2008 and the API the Docs event series.

Tim Yao photo

Tim Yao

Tim is a Distinguished Member of Technical Staff and a Portfolio Manager in Nokia Mobile Network Business Management. Over his twenty-year career in telecommunications, Tim has held roles software testing, system engineering, architecture, procurement, and innovation. He served six years on the Alcatel-Lucent FOSS Executive Committee. Tim has experience creating grass roots communities within the company and outside of it; he is a volunteer co-Municipal Liaison for National Novel Writing Month.

What is InnerSource?

InnerSource takes the lessons learned from developing open source software and applies them to the way companies develop software internally. As developers have become accustomed to working on world class open source software, there is a strong desire to bring those practices back inside the firewall and apply them to software that companies may be reluctant to release. For companies building mostly closed source software, InnerSource can be a great tool to help break down silos, encourage internal collaboration, accelerate new engineer on-boarding, and identify opportunities to contribute software back to the open source world.

What is the InnerSource Commons?

The InnerSource Commons ( aka ISC is a consortium of representatives from over sixty companies and institutions. It utilizes open source methods to provide organizations pursuing inner sourcing a forum for discussing and improving the practice of InnerSource through the sharing of experiences (under the Chatham House Rule), creation and review of InnerSource patterns, and the open exchange of ideas.

Who should attend?

The InnerSource Common Summits welcomes software professionals at all levels, from executive level manager to software developer. The program targets software development managers and executive managers in particular because adopting InnerSource requires significant efforts to make changes in the organization—whether these are implemented top-down or bottom-up. If you or your organization is adopting, or considering adopting, InnerSource, then attending the InnerSource Summit is the best thing you can do.

What will I get from this event?

The three key reasons to attend the InnerSource Common Summits are:

  • Learn from others who are on the journey of InnerSource adoption
  • Share your experiences and get help with your challenges
  • Network, network, network! The InnerSource Commons is an excellent place to network with likeminded people, all of whom are passionate about making InnerSource a success in their respective organizations!


This Summit is hosted by Robert Bosch GmbH on the research campus in Renningen.

Robert Bosch GmbH
Robert-Bosch-Campus 1
71272 Renningen



Morning snack, lunch and afternoon snack will be provided to Summit attendees each day, courtesy of Robert Bosch.

Evening Events

  • May 16th: Bosch will host a summit dinner on May 16th close to the venue.
  • May 17th: We’ll visit the Bosch semiconductor fab in Reutlingen. Note: we can only accomodate 50 visitors! We’ll prioritize external guests over Bosch employees and we’ll go in the order of registrations.

Code of Conduct

All participants, vendors, and guests at InnerSource Commons events are required to abide by the code of conduct.

InnerSource Commons meetings run under the Chatham House Rule: information discussed at a meeting can be shared but not attributed.

Interested in helping out? Email or speak up on the #innersourcecommons slack channel!


Send your questions via slack DM to @georg.gruetter