Álex Hermida @alexhermida.dev Less social.
Mehul Arora @infiniteregrets.bsky.social 
Tayler Ramsay @webdevdad.bsky.social I run autonomous research agents daily and post about AI security, vibe coding, and whatever catches my eye. building https://mindpattern.ai
Simon Whitaker @s1mn.bsky.social 
Alex Bradbury @asbradbury.org Compilers at Igalia. @llvmweekly.org author. Mostly RISC-V, LLVM, and a little WebAssembly. Previously lowRISC CTO and co-founder. Blogs at https://muxup.com
kero @kerollmops.com Co-founder and Tech Lead at @meilisearch.com. You can find my blog on https://blog.kerollmops.com. I love #rustlang.
Abhik Jain @abhikjain360.com i like coding.
rust, linux, pl, gpgpu, dist sys, dbs and all things about computers
based in Munich
abhikja.in
owais @desertthunder.dev sincere engineer
🖥️ w1c.desertthunder.dev
⚡ thndrs.stormlightlabs.org
📍 512 @stormlightlabs.org
gdotv - the graph database IDE @gdotv.bsky.social Get more done with your graph technology: gdotv helps you visualize your graph data, write and debug queries, track your data model, manage your #graphdatabases, and more.
Try it out for yourself with a 1-month free trial: gdotv.com
#RDF #dataviz
paco xander nathan @pacoid.bsky.social evil mad scientist
{ he, him }
vocation: entity resolution, knowledge graphs, AI apps @ Senzing
location: coastal redwoods /|\
xocation: https://derwen.ai/paco
more neanderthal than most reading this
remarks are personal, don't reflect employer's views
Peter Morgan @tansu.io Founder at https://tansu.io/
Kyle Barron @kylebarron.dev Creating the next generation of geospatial data tools for Python & the browser with GeoArrow, GeoParquet & GeoRust @developmentseed | he/him 🌈
Lindsay Clark @datadictum.bsky.social Reporter @theregister.com covering enterprise applications, databases and analytics. Also, a bit of science here and there. Many former lives.
grjte @grjte.sh - https://grjte.sh
- Researcher at @baincapitalcrypto.com exploring programmable cryptography and local-first software
- Experimenting with atproto + local-first software at https://groundmist.xyz
Polar Signals @polarsignals.com A cool company. 🧊
🚀 Unlock the full potential of your code with real-time profiling.
Creators of Parca!
polarsignals.com
Xiao @xiaom.io Data & Infra
github.com/xiaom
filtra.io @filtra.bsky.social Taking a simple idea seriously... Becoming the best place to find Rust jobs. Rust Jobs Report Publisher 🦀
Jack O'Connor @jacko.io jacko.io
Frank McSherry @frankmcsherry.bsky.social http://github.com/frankmcsherry/blog
Badr @pythops.com Senior Software Engineer
https://github.com/pythops
Carl Sverre @f0a.org Fascinated by the building blocks of great software. Extremely curious. High energy. Solving testing @antithesis.com. Built SQLSync.dev, graft.rs. Ex. SingleStore.
Justin @jaffray.bsky.social turning to the succor of modern computing machines, let us renounce all analytic tools
https://buttondown.com/jaffray justinjaffray.com
Matthias Loibl @metalmatze.de Director of @PolarSignals.com Cloud. Building cool products! 🧊 Maintainer of Parca, Pyrra, @Prometheus.io, PromOperator and more. PromCon organizer. @cncf.io Ambassador.
Luke Hedger @lukehedger.dev Software engineer. Building things for lego.com. Distributed systems, serverless, event sourcing, figuring out ai.
Wrote Serverless Development on AWS (O’Reilly)
https://lukehedger.dev/
📍 London
Mickael Maison @mickaelmaison.bsky.social Committer and Chair of the PMC for Apache Kafka
Software Engineer at IBM
Tanel Poder @tanelpoder.com Creator of https://0x.tools, also a long-time computer performance nerd. Perf & troubleshooting blog: tanelpoder.com. All onions are mine.
Christoph Lutz @christophlutz.bsky.social Those who don't jump will never fly.
https://www.0xChris.dev
Trifecta Tech Foundation @trifectatech.bsky.social Open infrastructure software in the public interest.
Maintainer of utilities and libraries for time synchronization, data compression, and on privilege boundaries.
Projects: sudo-rs, ntpd-rs, statime, zlib-rs and more on trifectatech.org.
Sean McArthur @seanmonstar.com Open Source maintainer of the rust-lang @hyper.rs.
More at seanmonstar.com
HYTRADBOI @hytradboi.bsky.social Have you tried rubbing a database on it?
https://www.hytradboi.com/2025
Christian Humer @chumer.dev PL/VM/Compilers at Oracle. Working on Truffle/Graal.
ME/CFS Caretaker and Activist (https://ooe-mecfs.at).
Austrian expat in Zurich.
Ivan Velichko @iximiuz.bsky.social Software Engineer. Educator. Entrepreneur. Bootstrapping labs.iximiuz.com - a learning platform to help you master Linux, Containers, and Kubernetes 🚀
@pepribas.bsky.social @pepribas.bsky.social 
Martin Perez @martin.arume.cloud Semi-retired til next thing. 100% certified human being. Also biker. I was once at twitter @mpermar. Then decided to check this AT protocol thingie.
Martijn Visser @2symbols.com Product Manager at Confluent, PMC member/Committer for Apache Flink. Product, Community, CI/CD, Data, SQL, APIs, Analytics, Technology, Security, IT, Law, Sports. He/him
Derrick Wippler @thrawn01.bsky.social Engineer, Optimist, Open Source enthusiast, https://mailgun.com alumni, Efficiency Evangelist, Project: http://querator.io, blog: https://wippler.dev- I Iker Jiménez @ijimenez.bsky.social Java performance, Kafka and Kubernetes.
Learning is my addiction
Ian Cook @ian.columnar.tech I work on Apache Arrow and obsess about interoperability and performance in data analytics systems
Andrew Lamb @andrewlamb1111.bsky.social Apache {DataFusion PMC}, Database Internals
Felipe O. Carvalho @felipe.rs SWE @ dbt Labs. Past: SDF, VoDa, Spotify. Apache Arrow/Databases/Compilers/DistSys. Rust/C++/OCaml/TLA+. 🇧🇷 → 🇸🇪 → 🌎 http://bento.me/felipe / https://felipe.rs
OpenJDK @openjdk.org The place to collaborate on an open-source implementation of the Java Platform and related projects · https://openjdk.org
Adi Polak @adipolak.bsky.social Code | Test | Deploy | Get paged
Data streaming, Machine Learning and AI app intensive Systems
Tim Chen @tnachen.bsky.social General Partner of Essence VC (www.essence.vc), all things infra software
Runs oss startup podcast and the infra pod
Jacob Aronoff @jaronoff.com OpenTelemetry Maintainer
I’d just like a bagel please
Nikhil Benesch @benesch.bsky.social Systems engineer @turbopuffer.bsky.social. Former CTO @materialize.com.
s2.dev @s2.dev API for unlimited, durable, real-time streams
Micah Wylde @micahw.com Co-founder arroyo.dev, building next-gen streaming systems. Prev Splunk, Lyft, Sift, Quantcast.
Robert Zych @zychr.bsky.social Software Engineer @ Raft, Apache Pinot Contributor, lives in Sacramento area.
Qian Li @qianli.dev Co-founder @dbos.dev • Stanford CS PhD
Co-organizer @southbaysystems.xyz
Working on 🐘 Database + Systems + AI
Amateur bird watcher 🦉
Personal site: qianli.dev
She/her.
Heinz Kabutz 🏝 🇬🇷 🇿🇦 ☕️ @heinzkabutz.com Author of mildly entertaining and somewhat useful #Java Specialists’ Newsletter. Email is heinz at javaspecialists dot eu.
Sébastien Allemand @allemas.bsky.social JVM Internals & Concurrent Software Design 🏗️
Deep dives into performance, concurrency & low-level mechanics ⚙️
Im not a t-shirt maker, views are my own
Javier Cancela @javiercancela.com Interested in data and AI (mostly LLMs).
Mainly in English, but sometimes in Spanish or Galician.
Director of Data Analytics @ Joor
Sophie Blee-Goldman @ableegoldman.bsky.social Apache Kafka PMC/committer, Founding Engineer at Responsive, Kafka Streams dev/fan, otter advocate. My debugging rubber duck is a 5 ft giraffe, please refer any questions to him
Anna McDonald @jbfletch.bsky.social Jessica Fletcher/She-Ra mashup wielding a laptop and an insane amount of curiosity Event Driven Everything, Kafka Duchess 👑 #BillsMafia She/her 
@kroxylicious.io @kroxylicious.io Kroxylicious, the snappy open source proxy for Apache Kafka®
Stéphane Derosiaux @sderosiaux.bsky.social co-founder conduktor.io. Random blurbs about Kafka, streaming, AI. Living in Brooklyn. Very French.
Neil Buesing @nbuesing.bsky.social Kafka architect & developer, Java developer
David Jacot @dajac.bsky.social Apache Kafka PMC; Software Engineer @ Confluent.
Jakub Scholz @scholzj.bsky.social AVFC, Messaging, Strimzi, Kafka, AMQP, Kubernetes, AnCap Libertarian ... all tweets are my own ...
Max Rydahl Andersen @maxandersen.xam.dk Quarkus co-lead - Distinguished Engineer, Red Hat. Creator of https://jbang.dev
Lgd. Viktor Klang @viktorklang.com Architect, Java Platform Group at Oracle.
⚡️Views are my own. ⚡️
James Densmore @jamesdensmore.bsky.social Software Engineering and Data Leader @ HubSpot. O’Reilly author. Enjoyer of dogs and video games
Stuff I created:
https://www.amazon.com/dp/1492087831/
https://www.dataliftoff.com
Tom Cooper @tomcooper.dev Senior Principal Engineer at IBM, Ex-Red Hat, Ex-Reddit, Ex-Twitter, Distributed Systems PhD, interested in all things stream processing, also cycling
@java-champions.bsky.social @java-champions.bsky.social 
Tom Cools @tomcools.be DevRel @Timefold | Conference (Keynote) Speaker 🗣️ | #Java Champion | @BeJUG Organizer | Kind of a weird guy 😅
Hanno Embregts 🎤🎸 @hanno.codes Java Developer 💻 by day, musician 🎤🎸 by night. A bit of both at developer conferences.
🏆 Java Champion
♠️ Oracle ACE Pro
🎟️ NLJUG Leader
👨🏼💻 Trainer / Technology Advocate at Info Support
🔗 hanno.codes
🇺🇦🏳️🌈🌱 Code for good
David Gómez G. @dgomezg.bsky.social JavaChampion. @madridjug.es co-organizer. I love doing stuff with other people, learning from others & sharing what I know.
Rodrigo Graciano @graciano.bsky.social Java Champion, NYJavaSIG leader, Software Engineer
Ivar Grimstad @theguywiththeduketattoo.com Java Champion | Jakarta EE Developer Advocate | The guy with the Duke tattoo
https://jakarta.ee/community/developer-advocate/
Jason Lee @jasondlee.bsky.social Christian. Husband. Father. Bassist. Martial Artist. Java Champion. Nashville recording artist. Software engineer @ Red Hat. @OKCJUG President. Opinions are mine, but can be yours.
evanchooly @evanchooly.bsky.social Java Champion. Kotlin fanatic. Bit twiddler. New Yorker. Pronounces it jif. SSE at @Datadog. @evanchooly@mastodon.social
Dervis Mansuroglu @dervis.bsky.social Leading the Norwegian JUG in Oslo, Java Champion, speaker, developer and principal officer at NAV IT (Norwegian gov).
🥼 Piotr Przybył @piotrprz.bsky.social Software Gardener. Java Champion. Docker Captain. Edutainer. Speaker. Trainer. Художник. Honorary Bavarian. 👨💻👨🌾
#Java #Testcontainers #Linux #Programming
softwaregarden.dev
Views are mine, impressions are yours.
Antoine Sabot-Durand @antoine.sabot-durand.net Java Champion, boardgames and rpg addict. I work at @SCIAM.fr. Former Jakarta EE CDI spec lead. I’m also the co creator of the @vidocq.dev MicroProfile implementation.
Brian Vermeer @brianvermeer.nl Java Champion | JUG leader
NLJug & VirtualJug | Oracle ACE Pro | CS Master at Utrecht University | Java | Haskell | Security | Dutch Air Reserve | Views are my own
James Ward @jamesward.com Just another nerd with a podcast: happypathprogramming.com
And a book:
effectorientedprogramming.com
Karl Heinz Marbaise (he/him) @khmarbaise.bsky.social Java Champion
Apache Maven PMC
Apache Software Foundation Member
Mojo Haus Member
Java Developer,
CI / CD Fan
Freelancer
Jorge Hidalgo 💾💾 /home/deors @deors.bsky.social lecturer in recent runes, father of 2, husband, whistle player, videogames, geek, all things software & platform engineering, java, cloud & devops at Accenture | MálagaJUG Lead | Java Champion | OpenSouthCode.org
Roy van Rijn @royvanrijn.com Director of OpenValue Rotterdam, is a @Java_Champions, founder of Rotterdam JUG, public speaking: Java, AI, math, algorithms
Sven Reimers @sreimers.bsky.social Java Champion,
JUG Leader JUG Bodensee, JTaccuino
Apache NetBeans PMC, OpenJFX author,
Systemengineer @ Airbus Defence and Space
Jean-Philippe Bempel @jpbempel.bsky.social Sr Sw Eng @Datadoghq, optimize software running on JVM. Love performance topics and mechanical sympathy supporter. Java Champion & @javamissionctrl committer
Stephan Janssen @stephanjanssen.be Founder @Devoxx.com Devoxx4kids, BeJUG and DevoxxGenie | Co-founder @Voxxed.com, VoxxedDays - Founder JCS int. acquired by RealDolmen ('02) : See also @ https://stephanjanssen.be
https://grokipedia.com/page/Stephan_Janssen
Mattias Karlsson @matkar.bsky.social Jfokus founder, Java Champion, JUG leader, Software Vagabond, Family father, Motorcyclist & Kiva supporter. Check out @jfokus.bsky.social
A N M Bazlur Rahman @bazlur.ca Java Champion 🏆 Empowering Developers through Speaking 🗣️ Writing ✍️ Mentoring 🤝 & Community Building 🌍 Published Author 📖 Contributing Editor at InfoQ and Foojay.IO
DNAstack
https://bio.site/bazlur
Books: https://bazlur.ca/books/
Viktor Gamov @gamussa.dev Principal Developer Advocate at @confluent.io, ☕️Java Champion, Co-author Kafka in Action, Flink aficionado
Mihai Todor @mihaitodor.bsky.social Software Engineer interested in computational biology / *omics 🧬. Cambridge, UK. He / Him.
Karl-Johan Nilsson @kjnilsson.bsky.social Works on RabbitMQ (Pivotal/VMware/Broadcom). Consensus, data storage.
Oh and electronic music.
Paul Dudley @paulfdudley.bsky.social Co-founder @ streamkap.com 
Iván López @ilopmar.bsky.social Java Champion & Principal Backend Developer at MasOrange. Previously Broadcom/VMware, Micronaut and Grails committer.
Geek, father, conference speaker, Linux-lover 🐧, Lord of Sealand. @madridgug.com & @madridjug.es organizer.
Vignesh Chandramohan @vigneshc.bsky.social Stream processing, data infra, Table formats.
https://vigneshc.github.io/
@flaneur2024.bsky.social @flaneur2024.bsky.social maintainer of SlateDB
loves Rust, Datasys, Cloud Infra, AI
https://flaneur2020.github.io
Sylvain Wallez @swallez.com Software engineer, from big servers to tiny microcontrollers. Principal engineer at @elastic.co, member of @apache.org. Blogging (sometimes) at https://bluxte.net
🌐 Toulouse, France, Europe
James Arthur @thruflo.com CEO & Co-founder @electric.ax
Matthias J. Sax 🦦 @mjsax.bsky.social American Homeowner 🇺🇸 | Battle Born | Go Bills 🦬 | Software Engineer at Confluent | GM of KafkaStreams 🦦 | ASF Member, Committer and PMC member (Apache Kafka, Apache Flink, Apache Storm) — Reno. Home Means Nevada.
Hans-Peter Grahsl @hpgrahsl.bsky.social Data Streaming Janitor & Open Source Builder, Ex-Decodable, Ex-Red Hat, formerly Engineer/Trainer/Consultant - proud husband, 🦁 hearted dad of 2 and ☕️ aficionado.
Almog @almog.xyz Favorite Buzzwords: Kafka Streams | SlateDB | Stream Processing | Distributed Databases
co-founder @ https://responsive.dev
Julien Le Dem @julien.ledem.net Principal Engineer, Founder, Angel, Advisor, OSS.
LFAI&data: OpenLineage, Marquez, ASF: Parquet, Arrow, Iceberg, 🐖
he/him.
Me: https://julien.ledem.net/
Blog: https://sympathetic.ink
Gwen Shapira @gwenshap.bsky.social Founder of SaaS Developer Community and Nile Database. 
shikhar @schmizz.net Making streams serverless @s2.dev