Contributor Profiles

These are the fine people that make PostgreSQL what it is today!

To suggest additions to the list, please email contributors@postgresql.org. Existing contributors can update their information in their user profile.

Core Team

For more information on the purpose of the core team, please click here.

Contributor Contribution
Peter Eisentraut (peter.eisentraut at 2ndquadrant.com)
2ndQuadrant
Dresden, Germany
Works on the build system, porting, documentation, and the internationalization effort, and codes many other improvements.
Magnus Hagander (magnus at hagander.net)
Redpill Linpro
Stockholm, Sweden
Has done major work on the Win32 port, authentication system and more, and helps maintain the PostgreSQL websites and project infrastructure.
Tom Lane (tgl at sss.pgh.pa.us)
Crunchy Data
Pittsburgh, Pennsylvania, USA
Involved in all aspects of PostgreSQL, including bug evaluation and fixes, performance improvements, and major new features, such as schemas. He is also responsible for the optimizer.
Bruce Momjian (bruce at momjian.us)
EnterpriseDB
Philadelphia, Pennsylvania, USA
Maintains the TODO list, codes, applies patches, and speaks at conferences.
Dave Page (dpage at pgadmin.org)
EnterpriseDB
Oxfordshire, United Kingdom
Created and maintains pgAdmin, helps manage the postgresql.org websites and project infrastructure, and maintains the PostgreSQL installers.

Major Contributors

Contributor Contribution
Joe Conway (mail at joeconway.com)
Crunchy Data
Palm Coast, Florida, USA
Set-returning functions, PL/R, dblink, tablefunc (crosstab), improved bytea and array data types, polymorphic arguments, multi-row VALUES, generate_series, pg_settings/related functions, has_*_privilege functions, shared_preload_libraries, and other features. PGDG sysadmin team, PG Funds Group member, previous board member PG.US
Dave Cramer (davec at postgresintl.com)
Crunchy Data
Toronto, Ontario, Canada
Maintainer of the JDBC driver and contributes to PL/R.
Andrew Dunstan (andrew at dunslane.net)
2ndQuadrant
Apex (near Raleigh), North Carolina, USA
Has contributed in a number of areas, including configuration and logging enhancements, dollar quoting, CSV import/export, upgraded plperlng, the Win32 port, rewriting the initdb and pg_ctl scripts in C, a double metaphone function in contrib, and maintains the buildfarm project.
Andres Freund (andres at anarazel.de)
San Francisco, USA
Pluggable table access methods, JIT, logical decoding, replication, performance, scalability, bug fixing and patch review.
Stephen Frost (sfrost at snowman.net)
Crunchy Data
Chantilly, VA, USA
Security improvements, GRANT improvements, patch review, project infrastructure.
Etsuro Fujita (etsuro.fujita at gmail.com)
NTT
Tokyo, Japan
Numerous improvements to postgres_fdw
Peter Geoghegan (pg at bowt.ie)
Crunchy Data
San Francisco, California, USA
Added various B-Tree performance enhancements, successive sort performance enhancements, amcheck (logical consistency checker), and INSERT ... ON CONFLICT DO UPDATE feature. Also works on bug fixes and patch review.
Andrew Gierth (andrew at tao11.riddles.org.uk)
UK
Hstore enhancements, ordered aggregates and ordered set functions, grouping sets, ip4r, and provides help and support in the IRC channel
Devrim Gündüz (devrim at gunduz.org)
EnterpriseDB
London, United Kingdom
Coordinates RPM maintenance at https://yum.postgresql.org for Red Hat/CentOS/Fedora, at https://zypp.postgresql.org for SLES, helps website maintenance, and builds PostgreSQL related packages for Fedora and EPEL.
Robert Haas (robertmhaas at gmail.com)
EnterpriseDB
USA
Principal author of parallel query. Scalability work, works all over the code with major patches, patch review. Created the original version of commitfest.postgresql.org.
Álvaro Herrera (alvherre at 2ndQuadrant.com)
2ndQuadrant
Valdivia, Chile
Fixed CLUSTER, worked on savepoints, added shared row locking, added shared dependency tracking, integrated autovacuum into the backend, added background workers, and helps running the project online infrastructure
Petr Jelinek (petr at 2ndquadrant.com)
2ndQuadrant
Czech Republic
Logical Replication, DO statement, GRANT ON ALL, ALTER DEFAULT PRIVILEGES, TABLESAMPLE, etc. Works on BDR, pglogical and PgBouncer.
Stefan Kaltenbrunner (stefan at kaltenbrunner.cc)
conova communications GmbH
Austria
Helps manage the project online infrastructure and maintain the websites.
Amit Kapila (amit.kapila16 at gmail.com)
EnterpriseDB
Bangalore, India
Parallel Query, durable Hash Indexes, Performance Testing
Jonathan Katz (jkatz at postgresql.org)
Crunchy Data
New York, NY
General project advocacy, including press releases & @postgresql, contributions to and moderation of PostgreSQL websites. Various committee participation and board membership. Miscellaneous patches & review.
Alexander Korotkov (a.korotkov at postgrespro.ru)
Postgres Professional
Moscow, Russia
Pluggable index access methods, SQL/JSON implementation, advances to GiST and GIN indexes, better algorithms for spatial and fuzzy string search, multicore system optimizations and more
Amit Langote (amitlangote09 at gmail.com)
NTT
Tokyo, Japan
Declarative table partitioning, pg_stat_progress_vacuum, improvements in partition elimination, partitioning performance
Guillaume Lelarge (guillaume at lelarge.info)
Dalibo
France
PostgreSQL Europe treasurer, PGConf.EU and FOSDEM staff, French translations (docs and apps), Patches on PostgreSQL and various tools
Heikki Linnakangas (heikki.linnakangas at iki.fi)
Pivotal
Helsinki, Finland
2 phase commit support, reworked FSM and VM, replication/transactions, indexing and much more
Fujii Masao (masao.fujii at gmail.com)
NTT Data
Japan
Streaming replication, synchronous replication
Noah Misch (noah at leadboat.com)
USA
Security work, patch review.
Thomas Munro (thomas.munro at gmail.com)
Wellington, New Zealand
Added Parallel Hash Join, SERIALIZABLE for parallel queries, FOR UPDATE SKIP LOCKED, remote_apply, replay_lag, trigger transition tables (co-author), various LDAP improvements, FreeBSD portability.
Michael Paquier (michael at paquier.xyz)
VMWare
Tokyo
Code review, bug fix, TAP testing, commit fest management.
Paul Ramsey (pramsey at cleverelephant.ca)
Crunchy Data
Victoria, BC, Canada
Extension support in postgres_fdw. PostGIS geospatial extension. HTTP extension. OGR FDW.
Simon Riggs (simon at 2ndquadrant.com)
2ndQuadrant
Buckinghamshire, United Kingdom
Point in Time Recovery, Table Partitioning, Hot Standby, Sync Replication, focuses on enterprise issues, performance and scalability, business intelligence and replication/high availability.
David Rowley (david.rowley at 2ndquadrant.com)
2ndQuadrant
Christchurch, New Zealand
Partial aggregation, parallel aggregation, moving aggregates, unique joins, run-time partition pruning, partitioning performance improvements and various query planner improvements.
Greg Sabino Mullane (greg at turnstep.com)
End Point Corporation
Philadelphia, Pennsylvania, USA
Maintains DBD::Pg, Bucardo, check_postgres.pl, tail_n_mail, and works on advocacy issues.
Teodor Sigaev (teodor at sigaev.ru)
Postgres Professional
Moscow, Russia
Works on GIST, GIN and other indexes, full-text search, NoSQL features such as SQL/JSON and other extensions.
Pavel Stehule (pavel.stehule at gmail.com)
freelancer
Prague, Czech Republic
Has contributed numerous enhancements to PL/pgSQL
Tomas Vondra (tv at fuzzy.cz)
2ndQuadrant
None
CREATE STATISTICS, improvements to pageinspect, ANALYZE, distinct value estimates, hash join optimizations, special-purpose memory allocators

Contributors

Laurenz Albe (laurenz.albe at cybertec.at) Aleksander Alekseev (afiskon at gmail.com)
Gevik Babakhani (pgdev at xs4all.nl) Ashutosh Bapat (ashutosh.bapat.oss at gmail.com)
Oleg Bartunov (obartunov at gmail.com) Christoph Berg (cb at df7cb.de)
Christopher Browne (cbbrowne at ca.afilias.info) Marc Cave-Ayland (mark.cave-ayland at siriusit.co.uk)
Jeevan Chalke Damien Clochard (damien at dalibo.info)
Fabien Coelho (coelho at cri.ensmp.fr) Mithun Cy (mithun.cy at gmail.com)
Jeff Davis (pgsql at j-davis.com) Pavan Deolasee (pavan.deolasee at 2ndquadrant.com)
David Fetter (david at fetter.org) Dimitri Fontaine (dim at tapoueh.org)
Nikita Glukhov (n.gluhov at postgrespro.ru) Kevin Grittner (kgrittn at gmail.com)
Daniel Gustafsson (daniel at yesql.se) Emre Hasegeli (emre at hasegeli.com)
Stacey Haysler (shayslerpgx at gmail.com) Bernd Helmle (mailings at oopsware.de)
Kyotaro Horiguchi (horikyota_ntt at gmail.com) Corey Huinker (corey.huinker at gmail.com)
Hiroshi Inoue Tatsuo Ishii (t-ishii at sraoss.co.jp)
Jeff Janes (jeff.janes at gmail.com) David Johnston (david.g.johnston at gmail.com)
Andreas Karlsson (andreas at proxel.se) Amit Khandekar
Alexey Klyukin (alexk at hintbits.com) KaiGai Kohei (kaigai at heterodb.com)
Haribabu Kommi (kommi.haribabu at gmail.com) Hannu Krosing (hannu at 2ndQuadrant.com)
Dilip Kumar (dilipbalaut at gmail.com) Jeevan Ladhe (jeevan.ladhe at enterprisedb.com)
Rushabh Lathia (rushabh.lathia at gmail.com) Anastasia Lubennikova
Abhijit Menon-Sen (ams at 2ndQuadrant.com) Michael Meskes (meskes at postgresql.org)
Jim Nasby (Jim.Nasby at BlueTreble.com) John Naylor
Regina Obe (rl at pcorp.us) Euler Taveira de Oliveira (euler at timbira.com.br)
Mike Palmiotto (mike.palmiotto at crunchydata.com) Dean Rasheed (dean.a.rasheed at gmail.com)
Marti Raudsepp (marti at juffo.org) Craig Ringer (craig at 2ndQuadrant.com)
Hiroshi Saito (hiroshi at winpg.jp) Sandro Santilli (strk at kbt.io)
Masahiko Sawada (sawada.mshk at gmail.com) Andreas Seltenreich (andreas.seltenreich at credativ.de)
Ashutosh Sharma (ashu.coek88 at gmail.com) Vladimir Sitnikov (sitnikov.vladimir at gmail.com)
Greg Stark (stark at mit.edu) David Steele (david at pgmasters.net)
Amul Sul (sulamul at gmail.com) Koichi Suzuki (koichi at 2ndquadrant.com)
Marko Tiikkaja Robert Treat (rob at xzilla.net)
Takayuki Tsunakawa (tsunakawa.takay at jp.fujitsu.com) David Wheeler (david at kineticode.com)
Mark Wong (mark at 2ndQuadrant.com)

Hackers Emeritus

The following hackers were previously part of the core team. Although they no longer work on the project, they are included here in recognition of their valuable contributions over the years.

Contributor Contribution
Josh Berkus (josh at agliodbs.com)
Red Hat Inc.
Portland, OR, USA
Provides general direction for PostgreSQL advocacy, works on performance testing, tuning and documentation, and works with user groups.
Marc G. Fournier (scrappy at hub.org)
2ndQuadrant, Inc.
Victoria, British Columbia, Canada
Coordinated the entire effort, helped administer the postgresql.org websites, mailing lists, ftp site, and source code repository.
Thomas G. Lockhart (lockhart at alumni.caltech.edu)
Jet Propulsion Labratory
Pasadena, California, USA
Worked on documentation, data types (particularly date/time and geometric), and SQL standards compliance.
Vadim B. Mikheev (vadim4o at yahoo.com)
San Francisco, California, USA
Undertook large projects, like vacuum, subselects, triggers, Write Ahead Log (WAL) and multi-version concurrency control (MVCC).
Jan Wieck (jan at wi3ck.info)
Amazon Web Services
Willow Grove, Pennsylvania, USA
Designed and implemented Slony, overhauled the query rewrite rule system, wrote the procedural languages PL/pgSQL and PL/Tcl, added foreign keys, bgwriter, the statistics collector, the TOAST system and other features.

Past Contributors

Julian Assange David Bennett
Dennis Björklund Alexey Borzov
Zoltán Böszörményi Emily Boyd
Tim Bunce D'Arcy Cain
Emmanuel Checchet Andrew Chernow
Sean Chittenden Justin Clift
Neil Conway Massimo Dal Zotto
Selena Deckelmann Dr_George_D Detlefsen
Korry Douglas Joshua Drake
Chris Dunlop J. Douglas Dunlop
Oliver Elphick Francisco Figueiredo
Michael Fuhr Brian E. Gallew
Michael Glaesemann Cees de Groot
Thomas Hallgren John Hansen
Hitoshi Harada Jonah Harris
Alex Hunsaker Brendan Jurd
Kris Jurka Christopher Kings-Lynne
Mark Kirkwood Manfred Koizar
Sergey E. Koposov Zdenek Kotala
Marko Kreen Anoop Kumar
Randy Kunkee Francalanci Leonardo
Kurt J. Lidl Barry Lind
Robert Lor Dan McGuirk
Roberto Mello Ernst Molitor
Fernando Nasser Claudio Natoli
Matthew T. O'Connor Lamar Owen
Andreas Pflug Ross J. Reedstrom
Thomas van Reimersdahl Larry Rosenman
Sergej Sergeev Jignesh Shah
Gavin Sherry Michael Siebenborn
Guillaume Smet Greg Smith
Erich Stamberger Adam Sussman
Sven Suursoho Stephan Szabo
ITAGAKI Takahiro Rod Taylor
Yamada Tsutomu Reini Urban
Jan Urbański Martijn van Oosterhout
Paul "Shag" Walmsley Philip Warner
Rick Weldon Joachim Wieland
Jason Wright Karel Zak
Andreas Zeugswetter Qingqing Zhou

All contributors are listed in alphabetical order. Please report omissions or corrections to the webmaster.