|The Java Community Process (JCP) program is managed
by an elected Executive Committee which oversees the development of Java
Specification Requests (JSRs) and the resulting Application Program Interfaces
(APIs), Reference Implementations (RIs), and Technology Compatibility
Kits (TCKs). Many of the members of this committee are also represented
on other standards bodies, which enhances industry-wide communications.
Alibaba, Kingsum Chow
ARM, Stuart Monteith
BellSoft, Aleksei Voitylov
BNY Mellon, Donald Raab
BNY Mellon, Chandra Guntur (alternate)
BNY Mellon, Nikhil Nanivadekar (alternate)
Eclipse Foundation, Ivar Grimstad
Fujitsu, Kenji Kazumura
JetBrains, Trisha Gee
IBM, Mark Little
IBM, Tim Ellison (alternate)
Intel, Steve Dohrmann
London Java Community, Martijn Verburg
MicroDoc, Bruno Caballero
Oracle, Don Deutsch
Oracle, Calinel Pasteanu (alternate)
Oracle, Anish Karmarkar (alternate)
SAP, Götz Lindenmaier
SAP, Christoph Langer (alternate)
SAP, Martin Dörr (alternate)
SouJava, Bruno Ferreira de Souza
Tomitribe, David Blevins
Tomitribe, Amelia Eiras (alternate)
Twitter, Tony Printezis
Twitter, Flavio Brasil (alternate)
|Alibaba, Kingsum Chow
Kingsum Chow is the chief scientist of system software hardware co-optimization. He has over 15 years of
optimizing Java performance in collaboration with Appeal, IBM, BEA, Sun and Oracle JVM teams while working at
Intel. In 2016, he joined Alibaba to improve Java performance in the data center. Kingsum has been issued more
than 20 patents. He also has delivered more than 90 papers and presentations. Kingsum appeared four times in
JavaOne keynotes and almost a dozen times in JavaOne and Oracle OpenWorld presentations covering the topic of
software performance systems and optimization. Kingsum received a PhD in Computer Science and Engineering from the
University of Washington in Seattle in 1996.
|ARM, Stuart Monteith
Stuart Monteith is a principal software engineer in the Open-Source Software group at Arm in Cambridge.
There he has worked on porting work and optimising virtual machines, most recently OpenJDK, often
under the auspices of Linaro. Prior to this he worked in the IBM Java Technology Centre with the
JVM on various Linux platforms and other projects such as JSR-326. He has worked with Java since
1996 during his degree course at the University of Strathclyde. Along he has used Java on probably
eight different instruction sets, and so believes the principle of write-once-run-anywhere
|BellSoft, Aleksei Voitylov
With 15 years of Java experience, Aleksei Voitylov is the CTO and co-founder of BellSoft. A seasoned Java developer,
Aleksei worked at Sun and Oracle with various JVMs and JSRs implementations and helped deliver HotSpot and Java Language to the JDK.
He founded BellSoft to provide a high-quality Java SE Runtime relevant for all use cases. Aleksei is an Open Source Evangelist and
OpenJDK contributor. He presents at various Java developer conferences and contributes articles to the Java Magazine.
Marcus (@MarcusBiel) is a well known figure in the Java community, with a total of 75,000 followers across various
social media platforms. In 2019 he was named Oracle Developer Champion (Groundbreaker Ambassador). Marcus is a
regular speaker at Java conferences all over the world, such as JBCN Conf Barcelona, JPoint Moscow and JAX London.
Besides this, he works as a technical reviewer for renowned Java books such as Effective Java, Core Java SE 9 for
the Impatient or Java by Comparison.
|BNY Mellon, Donald Raab
Donald (Don) Raab is a Managing Director and Java Evangelist in Resilient Systems Engineering, BNY Mellon.
Don has more than 17 years' experience as a Software Engineer in the Financial Services industry. He started
programming with Java in 1997. Don is a member of the JSR 335 Expert Group (Libraries) and is also the creator of
the Eclipse Collections Java Library that was originally open sourced as GS Collections in 2012 and migrated to the
Eclipse Foundation in 2015. Donald was selected as a 2018 Java Champion, and he is a frequent speaker and guest trainer
at key Java conferences and user group meetups including Oracle CodeOne, JavaOne, QCon New York, Devnexus, Devoxx US,
EclipseCon, JVM Language Summit and Great Indian Developer Summit (GIDS).
|BNY Mellon, Chandra Guntur (alternate)
Chandramouli (Chandra) Guntur is a Director and Java Evangelist in Resilient Systems Engineering, BNY Mellon.
Chandra has 15 years of experience as a Technologist in the financial services industry and started programming
with Java in 1998. He is a Java User Group (JUG) Leader, and helps run one of the largest groups, NYJavaSIG.
Chandra is also responsible for running the NYJavaSIG Hands-On-Workshops (HOW), conducting code workshops and
Katas on core Java features. He is a frequent speaker at Java meetups, user groups, and key conferences including
Oracle CodeOne, Oracle Code NY, QCon New York, Devnexus.
|BNY Mellon, Nikhil Nanivadekar (alternate)
Nikhil Nanivadekar is a Director and Senior Principle Architect in Application Development, BNY Mellon. Nikhil has more than 7 years of
experience building mission critical applications for financial institutions. Prior to joining BNY Mellon, he was a Vice President in
Private Wealth Management at Goldman Sachs Engineering. Nikhil was selected as a 2018 Java Champion, is an Oracle Groundbreaker
Ambassador, and is the active project lead for the open-source Eclipse Collections framework. He is a regular on the speaker circuit
and hosts several workshops at prestigious conferences teaching robotics for kids such as JCrete4Kids, JavaOne4Kids, and Devoxx4Kids.
Nikhil holds a Bachelor's degree in Mechanical Engineering from the University of Pune, and a Master's of Science in Mechanical
Engineering with specialization in robotics and controls from the University of Utah.
|Eclipse Foundation, Ivar Grimstad
Ivar Grimstad is the Jakarta EE Developer Advocate at Eclipse Foundation. He has served on the EC since 2016, worked on several JSRs and has been awarded
as Outstanding Spec Lead and Start Spec Lead. At Eclipse, he works with Jakarta EE and MicroProfile.
Ken Fogel is a professor in the Computer Science Technology program at Dawson College in Montreal. The program's mandate is to train
students, primarily right out of high school, to become job-ready software developers. In 2019 Ken became Java Champion. Four
years ago he began a free one-day conference in Montreal called DawsCon. He has attracted some of the finest presenters to
speak to both students and the local developer community. He has also spoken at JavaOne/CodeOne for that past six years.
|Fujitsu, Kenji Kazumura
Kenji Kazumura has been working with Java for about 20 years since Java was born,
and now he is Senior Professional Engineer of Java Technology at Fujitsu Limited
in Japan. He is in charge of developing Java Virtual Machine for Interstage
Application Server and various Fujitsu middleware products. He has participated
in the Expert Group of JSR 204 (Unicode Supplementary Character Support). He has
optimized several huge enterprise Java applications, specifically in the field
of mobile communication and financial service, in order to run with high performance
and reliability. These systems contribute a great deal to the social infrastructures
in Japan. He is now working to make the cloud environment be more useful by
accelerating Java technology into this area.
Trisha Gee is a Java Champion and the IntelliJ IDEA Developer Advocate for JetBrains, a role which is
perfect for her passion of evangelising Java after nearly 20 years of developing enterprise applications
with it. Her goal is to help developers to "level up" as the language evolves. She has written and presented
on Java 8, helping developers to understand how to use the new features and how to refactor to utilise the
latest idioms, and is now focussed on teaching Java 9.
Trisha was previously involved in the JCP Executive Committee via the London Java Community, and helped to
create the Adopt a JSR and Adopt OpenJDK initiatives.
|IBM, Mark Little
Mark Little leads jboss technical direction and research/development. Prior to this he was SOA Technical Development Manager
and Director of Standards. He joined JBoss in a partial acquisition of technology from Arjuna Technologies, where he was Chief
Architect, Co-Founder and Director. Before starting Arjuna Technologies, Mark was a Distinguished Engineer at Hewlett-Packard,
where he ran the transactions teams and was responsible for the world's first Web Services transactions product.
Over the years Mark has been heavily involved in standards. This includes activities in the OMG, where he was a collaborator on
the Object Transaction Service (OTS) specifications since 1991 and chair of the Additional Structuring Mechanisms for the OTS standard.
Mark has been involved with OASIS since 2000, where he was HPbs representative on the Business Transactions Technical Committee.
He's also been involved with various other OASIS committees, such as WS-CAF, WS-TX, WS-RX, SOA-RM and WS-RF, working closely with
colleagues from Microsoft, IBM, Oracle, BEA, and other companies. Mark was been involved with the W3C WS-Addressing working
group since it started and is also on the WS-Policy and WS-CDL committees. He is active in the Java Community Process, as Red
Hat's primary representative on the JCP and has worked on several JSRs.
Mark has been the lead developer and manager on a number of important products for companies including Hewlett-Packard and
Red Hat. These include the first fully compliant OTS implementation as well as the world's first pure Java transaction service.
He has extensive experience in the areas of fault tolerance, reliability, transactions, Web Services and SOA.
Mark has published extensively over the past 20 years at workshops, conferences, trade magazines etc. He is a co-author of four
books, covering topics from distributed transactions to enterprise SOA. He has over 50 publications to his name and has presented
at over 40 events. He is co-author on several Web Services specifications before they entered a standards body, including
WS-Context, WS-MessageDelivery, WS-Coordination and WS-TX. He has also worked on papers and articles with colleagues/friends
from Oracle, IBM, Microsoft, IONA Technologies and others. He has worked in the area of reliable distributed systems since the
mid-80's and has a PhD on Fault Tolerance, Transactions and Replication. He is also a professor at Newcastle University.
|IBM, Tim Ellison (alternate)
Tim Ellison is a senior member of IBM's Runtimes Technology Centre with worldwide responsibility for open
source engineering projects.
Prior to his current position he was part of the original Eclipse development team, and Vice President of the
Apache Software Foundation Harmony Project. He is an expert member on numerous JSRs, including the Java modularity
system and Java SE platform specifications.
Tim holds a BSc in Computer Science, an MSc in Computer System Design, and post graduate research in image analysis.
He has contributed to the implementation of Smalltalk, IBM VisualAge, Eclipse, and the Java SDK for over twenty years.
He has a broad knowledge of high performance runtimes, open source methodologies, and applying new language technology to
|Intel, Steve Dohrmann
Steve Dohrmann is a Senior Staff Software Engineer at Intel. He has worked on various Java
projects over the past 20 years, and is passionate about Java and its future. His Java
development work includes the Java Media Framework, mobile agent software, secure collaboration
software, a cryptography framework, embedded parallel programming for Java, and enabling Java
to use persistent memory.
|London Java Community, Martijn Verburg
Martijn is the co-leader of the London Java Community (over 5000 Java developers), and leads
the global effort of Java User Groups who contribute to Java standards (Adopt a JSR programme)
and the Java itself (Adopt OpenJDK programme). In 2012 he was added as one of the 120 existing
Java Champions for services rendered to the Java ecosystem.
He is currently the CEO of jClarity (www.jclarity.com) a Java/JVM startup focussed on the
You can also find him presenting keynotes and talks at major conferences (JavaOne, Devoxx,
OSCON, JAX, PHP UK etc) and in house at organisations where he is known for challenging the
industry status quo as the "Diabolical Developer". His first book "The Well-Grounded Java Developer"
with Ben Evans was published by Manning in June 2012.
|MicroDoc, Bruno Caballero
Bruno Caballero works for MicroDoc Computersysteme GmbH and is based in Berlin, Germany. During his career, Bruno
has developed a wide range of embedded software projects. Today he is involved in porting the Java virtual machine
to new hardware platforms and operating systems, as well as supporting customers on creating Java solutions for
embedded devices. His main interest is learning new methodologies to create faster and more secure Java applications.
|Oracle, Don Deutsch
With 30 years in the Information Technology industry, Dr. Don Deutsch
is currently vice president, Standards Strategy and Architecture for
Oracle Corporation. Don represents Oracle on the INCITS Executive Board,
the American National Standards Institute (ANSI) Board of Directors,
the World-Wide Web Consortium (W3C) Advisory Board, and the JCP SE/EE
EC. Don was president of the Enterprise Grid Alliance, a consortium focusing
on accelerating the application of Grid technology in commercial and
public sector data centers, and he served as chair of the JTC 1 Web Services
Study Group. ANSI recognized Don for his leadership of national
and international information technology standardization as the 2002
recipient of the Edward Lohse Information Technology Medal. Don
has published numerous articles and papers, and co-authored an undergraduate
textbook on Database Concepts. The National Bureau of Standards published
his doctoral research on Modeling and Measurement of Database Management
| Oracle, Calinel Pasteanu (alternate)
Calinel Pasteanu represents Oracle on the ME EC. He holds several
software patents and has a Licentiate degree in Physics. He worked for
Siemens 1985-2005 in several telecommunication business units, in both
network and terminal areas. His last Siemens responsibility was to manage
the Technology & Innovation SW department of Siemens Mobile. He moved
to Qisda along with the Siemens Mobile business, and now he is employed
by Sun as Director of Standards within the Client Software Group. He
is based in Munich, Germany and manages an international team.
Calinel began his involvement in the JCP in 1999, serving as an Expert
for JSR 30, J2ME Connected, Limited Device Configuration, and various
other Expert Groups, including JSR 248, Mobile Service Architecture (MSA),
and JSR 249, MSA Advanced. At his initiative, a Java ME Spec Leads team
was created at Siemens, and numerous JSRs were filed by his team: 195,
229, 230, 246, 253, 259, 266, 281, 304.
Calinel has made other contributions in the area of standardization.
He served as Vice Chair of the Software Defined Radio Forum, as member
of the OSGI Board of Directors, represented Siemens in the mobile carriers
consortium known as OMTP and the Open Mobile Alliance (OMA).
| Oracle, Anish Karmarkar (alternate)
Dr. Anish Karmarkar has 20+ years of research, development, industry standards and
collaboration experience. Anish has participated in variety of standards development
organizations and industry collaborations in various capacities, including participating
in and chairing technical committees/working groups, governance and steering/executive
committees, and Board of Directors. He has co-authored and co-edited several standards
specifications and is the co-author of the book "Web Service Contract Design and Versioning for SOA."
At Oracle, Anish is a Consulting Member of Technical Staff in the Standards Strategy and
Architecture team. He is involved in Java, IoT, Cloud, and Big Data standards and industry
collaborations. He is an elected member of OMG Board of Directors; is an elected member of
the OSGi Alliance Board of Directors and is their Vice President for Americas; is an elected
member of OASIS WS-I Member Section Steering Committee; is the co-chair of the IIC Vocabulary
Task Group; chairs the OASIS Cloud Application Management for Platform (CAMP) Technical Committee;
and is the the co-chair of OASIS SCA-BPEL and SCA-J Technical Committees.
|SAP, Götz Lindenmaier
Götz Lindenmaier works for SAP for more than 10 years. After implementing and tuning the IA64
port for the SAP Java Virtual Machine he worked on various projects in the SAP JVM context including
the release of new SAP JVM versions and the integration of new hotspot releases to SAP JVMs for older
Java versions. He took a major role in the contribution of the PowerPC/AIX and S390 ports to OpenJDK
and since then works on maintaining these in OpenJDK. He also contributes to OpenJDK with the major
focus on improving its serviceability. He is a JDK and JDK 9 Reviewer and Committer in several other
Götz studied at University Kiel and University of Massachusetts, Amherst and holds a master
and PhD degree of the University of Karlsruhe (KIT).
|SAP, Christoph Langer (alternate)
Christoph Langer is a member of the JVM team at SAP. He's an all-rounder for OpenJDK, working in several areas
such as class library, hotspot and JFR/JMC.
He's actively engaged in the OpenJDK community and currently serves as co-maintainer for the OpenJDK 11 LTS version.
Christoph is an alumni of the University of Cooperative Education (DHBW) in Stuttgart.
|SAP, Martin Dörr (alternate)
Martin Dörr has joined SAP's JVM team in 2011. He has experience in various areas of the JVM like
Just-in-time compilers (C1 and C2), runtime code, garbage collection, debugging (JVMTI), native (JNI) and processor
architecture specific code. Martin is an OpenJDK contributor and reviewer and actively maintaining processor specific
code for IBM Power and z Systems.
Martin holds a Master of Computer Science equivalent degree from the University of Karlsruhe (KIT). He has professional
experience in microprocessor development and compiler construction.
|SouJava, Bruno Ferreira de Souza
Bruno Souza is a Java Developer and Open Source Evangelist. As founder
and coordinator of SouJava (Sociedade de Usuários da Tecnologia
Java; Java Technology Users Society) and leader of the Worldwide Java
User Groups Community at Java.net, Bruno helped in the creation and organization
of hundreds of JUGs worldwide.
A Java Developer since the earliest days of the technology, Bruno took
part in some of the largest Java projects in Brazil. Bruno is a Principal
Consultant at Summa Technologies, and has extensive experience in large
projects in the Government, finance and service industries. A Cloud Expert
at ToolsCloud, he promotes and develops cloud-based systems using Java.
Nurturing developer communities is a personal passion, and Bruno worked
actively with Java open source communities and projects.
Bruno Souza is an Honorary Director of the Open Source Initiative (OSI),
President of the innovation-focused Campus Party Institute, and Coordinator
of Nuvem, the Cloud Computing Lab of LSI/USP. When not in front of a
computer, Bruno enjoys time with his family in a little hideout near
Sâo Paulo. An amateur in many things - photographer, puppeteer,
father - he strives to excel in some of them.
|Tomitribe, David Blevins
Founder and CEO of Tomitribe. Veteran of Open Source Java EE in both implementing and defining JavaEE
specifications for over 10 years with a strong drive to see JavaEE simple, testable and as light as
Java SE. Co-Founder of OpenEJB (1999), Geronimo (2003), TomEE (2011). Member of the Java EE 7 and
EJB 3.2 Expert Groups, past member of the Java EE 6, EJB 3.1, and EJB 3.0 Expert Groups. Contributing
author to Component-Based Software Engineering: Putting the Pieces Together from Addison Wesley.
|Tomitribe, Amelia Eiras (alternate)
Co-Founder & Chief Operating Officer. Known as the "wild-card" of the Tribe, Amelia brings a
lifetime of experience as co-owner and operator of hotels, properties and small businesses in
Ecuador and Spain. A natural leader and organizer, Amelia thrives in a variety of environments
that require the marshaling of resources, flexibility, and intelligent decision-making, often
based on limited information and/or difficult and ambiguous conditions.
|Twitter, Tony Printezis
Tony Printezis is a Staff Software Engineer at Twitter and a member of
the VM Team in the Infrastructure Organization.
He has over 15 years of (mainly Java) virtual machine implementation
experience with special focus on memory management. Most of his
projects have involved improving the performance, scalability,
responsiveness, parallelism, concurrency, monitoring, and
visualization of garbage collectors. He was one of the designers of
(and tech lead of) the Garbage-First GC and the original implementer
of the widely-used CMS GC.
Before Twitter Tony worked at Adobe (on the eventually canceled
next-generation Flash effort), the Java organization at Oracle and Sun
Microsystems (where he contributed to the gabrage collectors of the
Java HotSpot virtual machine), and Sun Microsystems Laboratories
(where he did garbage collection-related research).
He holds a PhD and a BSc(Hons) in Computing Science, both from the
University of Glasgow in Scotland.
On his spare time he's been known to carry unreasonably heavy camera
equipment to take pictures of big, aluminum birds... and he also cooks.
|Twitter, Flavio Brasil (alternate)
Flavio Brasil is a Staff Software Engineer at Twitter and a member of the #TwitterVMTeam in the
Infrastructure Organization. He has worked with several technologies during his 13 years of experience
in software engineering. His diverse background, which includes multiple programming languages and
runtimes, distributed systems, language and library design, big data, and others, brings a broad
perspective to the projects he works on. Flavio is an active open source contributor and has created
groundbreaking projects like Quill (http://getquill.io), the most advanced LINQ solution in any
programming language. Over the past 8+ years, he has specialized in performance on the JVM and is
currently working on Graal JIT optimizations tailored to the specific needs of Scala codebases.
He holds a BSc in Computing Science from the University of Sao Carlos in Brazil.