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Eldert Grootenboer

@eldert.net

Senior Product Manager @Microsoft | #Azure Service Bus | Former #Azure MVP | Community Enthusiast | Public Speaker

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Latest posts by Eldert Grootenboer @eldert.net

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OPPORTUNITY: The Space Telescope Science Institute in Baltimore, MD, is searching for a Senior Data Platform Engineer to help manage the backend data pipelines, and ensure high-performance, reliable data access for our advanced astronomical public data archive: https://bit.ly/3N0T1sg

05.03.2026 19:03 ๐Ÿ‘ 23 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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5 quick tips for giving better presentations I have been speaking publicly at developer conferences for over a decade and in that time I've seen plenty of other people giving talks. Everyone gives talks...

I've written a post containing some tips for giving better presentations!

None of these tips can replace great content, but they will help you start strong and keep the energy going all the way through to the applause at the end.

philna.sh/blog/2026/03...

Do you have any more tips to share?

06.03.2026 01:23 ๐Ÿ‘ 24 ๐Ÿ” 8 ๐Ÿ’ฌ 5 ๐Ÿ“Œ 0
Side-by-side images of the same nebula show how differently it appears in near-infrared, on the left, versus mid-infrared light, on the right. Left image is labeled NIRCam and the right is labeled MIRI.

In near-infrared, the nebulaโ€™s outer bubble has a white edge and its inner clouds are orange, with a distinct dark lane cutting vertically through the center. Stars and background galaxies appear around the nebula and through the outer bubble.

In mid-infrared, the outer bubble has a bluish tint and there is more material in the inner clouds, which are colored off-white. The vertical dark lane is still present but more interrupted and covered by the clouds. Material appears to be erupting out the top of the nebula, and this effect is mirrored to a lesser degree at the bottom, opposite end.

Side-by-side images of the same nebula show how differently it appears in near-infrared, on the left, versus mid-infrared light, on the right. Left image is labeled NIRCam and the right is labeled MIRI. In near-infrared, the nebulaโ€™s outer bubble has a white edge and its inner clouds are orange, with a distinct dark lane cutting vertically through the center. Stars and background galaxies appear around the nebula and through the outer bubble. In mid-infrared, the outer bubble has a bluish tint and there is more material in the inner clouds, which are colored off-white. The vertical dark lane is still present but more interrupted and covered by the clouds. Material appears to be erupting out the top of the nebula, and this effect is mirrored to a lesser degree at the bottom, opposite end.

ICYMI: Astronomers are losing their minds over #NASAWebbโ€™s latest images of the very brainy-looking nebula PMR 1. Its distinctive form is the result of a dying star expelling its outer layers: https://science.nasa.gov/missions/webb/nasas-webb-examines-cranium-nebula/ ๐Ÿ”ญ ๐Ÿงช

27.02.2026 17:39 ๐Ÿ‘ 91 ๐Ÿ” 23 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
A highโ€‘resolution overhead view of a rocky, desertโ€‘like landscape on Mars. The surface is mostly reddishโ€‘brown with patches of darker blueโ€‘grey tones. Many circular impact craters of different sizes are scattered across the scene, some with raised rims and shadowed interiors. Subtle ridges, eroded valleys, and textured terrain patterns run diagonally through the image, giving a sense of ancient geological activity. The overall impression is of a dry, rugged, and heavily cratered Martian surface.

A highโ€‘resolution overhead view of a rocky, desertโ€‘like landscape on Mars. The surface is mostly reddishโ€‘brown with patches of darker blueโ€‘grey tones. Many circular impact craters of different sizes are scattered across the scene, some with raised rims and shadowed interiors. Subtle ridges, eroded valleys, and textured terrain patterns run diagonally through the image, giving a sense of ancient geological activity. The overall impression is of a dry, rugged, and heavily cratered Martian surface.

Craters, craters, and yet more craters! Our latest snapshot from Mars Express is packed full of them.

Discover this slice of ancient, battered land in more depth, including a zoomable, labelled version of this main image as well as close-up and 3D views ๐Ÿ‘‰ www.esa.int/Science_Expl...

๐Ÿ”ญ ๐Ÿงช

04.03.2026 10:01 ๐Ÿ‘ 105 ๐Ÿ” 31 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
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Exactly-once delivery doesn't exist. ๐๐จ๐ญ ๐ž๐ง๐-๐ญ๐จ-๐ž๐ง๐.

What you actually need is ๐ข๐๐ž๐ฆ๐ฉ๐จ๐ญ๐ž๐ง๐ญ ๐ฉ๐ซ๐จ๐œ๐ž๐ฌ๐ฌ๐ข๐ง๐ : + an ๐ญ๐ซ๐š๐ง๐ฌ๐š๐œ๐ญ๐ข๐จ๐ง๐š๐ฅ ๐จ๐ฎ๐ญ๐›๐จ๐ฑ.

Stop chasing impossible transport guarantees. Engineer deterministic outcomes instead.
#dotnet

03.03.2026 09:15 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Claude Code Part 4: A Thing Worked! Let's Keep Going
Claude Code Part 4: A Thing Worked! Let's Keep Going YouTube video by rendle

More Claude!

www.youtube.com/watch?v=m4fF...

26.02.2026 14:02 ๐Ÿ‘ 5 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Tickets for Stir Trek 2026 are now available at Early Bird and Super Early Bird pricing (first 50 sales only). Get them now before they go up in price. events.humanitix.com/stir-trek-20...

24.02.2026 17:01 ๐Ÿ‘ 3 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

On sale now!

24.02.2026 17:23 ๐Ÿ‘ 1 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Reminder: Stir Trek tickets go on sale in 24 hours and we have limited super early bird pricing for the first 50 tickets sold. Set your clocks for noon tomorrow!

23.02.2026 16:57 ๐Ÿ‘ 4 ๐Ÿ” 7 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 2
Naftiko Capabilities Podcast for 19th, 2026 - JSON Structure
Naftiko Capabilities Podcast for 19th, 2026 - JSON Structure YouTube video by Naftiko

Kin Lane talks to me about JSON Structure youtu.be/StreaDM_8K4

19.02.2026 20:41 ๐Ÿ‘ 3 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Hi everyone! I was informed this morning that I am no longer employed at Sonar. With that, Iโ€™m seeking a new role and would appreciate your support. If you hear of any opportunities or just want to catch up, please send me a message or comment below. Iโ€™d love to reconnect. #OpenToWork

19.02.2026 18:25 ๐Ÿ‘ 8 ๐Ÿ” 7 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Streamlining Database and Developer Work: KC Postgres + Dev Ops KC, Mon, Feb 23, 2026, 5:30 PM | Meetup Dev Ops KC and KC Postgres are teaming up to bring you a special combined meetup tackling the evergreen topic of working on both the database and the code with modern effic

Come join us next Monday, Feb 23 for a joint meetup with KC #Postgres as we hear from @heatherdown.ing ( @yugabytedb.bsky.social ) about "Streamlining Database and Developer Work".

RSVP: www.meetup.com/kansas-city-...

16.02.2026 22:13 ๐Ÿ‘ 6 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

For anyone interested in a talk or workshop for their company (online or in person), I have a couple of days here and there from the end of March into April, plus some availability in June.

17.02.2026 12:58 ๐Ÿ‘ 6 ๐Ÿ” 4 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
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| Norfolk Developers Conference 2026 Talks on language, business, methodology, & game development. Join us for two days of development goodness at The Kings' Centre.

Where you can find me over the next few weeks:

@nor.dev in Norwich (27th Feb)
nordevcon.com

@amaconf.bsky.social in Berlin (10th March)
www.agile-meets-architecture.com/2026/home

Future Tech in Utrecht (11th March)
futuretech.nl

@umbracospark.bsky.social in Bristol (20th March)
umbracospark.com

17.02.2026 10:26 ๐Ÿ‘ 4 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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From Keyboard to Keynote: Creating Great Tech Talks : dylanbeattie.net Learn to create & present great tech talks in this live online workshop led by Dylan Beattie.

Want to give awesome tech presentations? I'm running "From Keyboard to Keynote" online next month. 24th & 25th March, two half-days live on Zoom: content, rehearsal, working with CFPs, making slides, presenting code, video, and more.

Early bird ๐Ÿฆ tickets only ยฃ245:

dylanbeattie.net/workshops/fr...

16.02.2026 15:13 ๐Ÿ‘ 5 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
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Subscribe! (new) - YouTube

The first 6 episodes of my "Subscribe!" show are now online. Episodes 2-6 are quick introductions for the different services by team works on. Next week, I'll cover the standards work and a few OSS projects.

YouTube: www.youtube.com/playlist?lis...

13.02.2026 13:25 ๐Ÿ‘ 2 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
How I Tamed Claude - Emmz Rendle - NDC London 2026
How I Tamed Claude - Emmz Rendle - NDC London 2026 YouTube video by NDC Conferences

www.youtube.com/watch?v=pey9...

@nielsstubbe.bsky.social @flensrocker.de

09.02.2026 18:37 ๐Ÿ‘ 19 ๐Ÿ” 4 ๐Ÿ’ฌ 6 ๐Ÿ“Œ 1
Webb: Transforming Our Understanding of Star Formation
Webb: Transforming Our Understanding of Star Formation YouTube video by Space Telescope Science Institute

In more than three years, #NASAWebb has โ€œsuperchargedโ€ what astronomers can learn about star formationโ€”reshaping what we know with its sharp near- and mid-infrared observations.

Credit: NASA, ESA, CSA, STScI. ๐Ÿ”ญ ๐Ÿงช

12.02.2026 15:55 ๐Ÿ‘ 53 ๐Ÿ” 19 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 2
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.NET Rocks! .NET Rocks! is a weekly talk show for anyone interested in programming on the Microsoft .NET platform. The shows range from introductory information to hardcore geekiness.

How does Artificial Intelligence impact our approach to building secure software?

@BenDechrai.ai talks on .NET Rocks at www.dotnetrocks.com/details/1989 about his experiences working with AI tooling and building AI apps and how that impacts security!

12.02.2026 16:01 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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OPPORTUNITY: The Space Telescope Science Institute in Baltimore, MD, is searching for a highly skilled Cloud Software Engineer II with expertise in Python programming and building ETL data processing pipelines for large-scale scientific datasets: https://bit.ly/3M2xe31

10.02.2026 22:12 ๐Ÿ‘ 26 ๐Ÿ” 7 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 3
Integration Down Under

Don't miss next week's @integrationdownunder.com webcast with @eldert.net talking about Engineering for Reliability and Stability in the Azure Messaging Services for more details, and the live link go to: www.integrationdownunder.com sponsored by @sixpivot.bsky.social

04.02.2026 22:16 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Reflections on NDC London and PubConf : dylanbeattie.net An article from dylanbeattie.net

With NDC London and PubConf wrapped for another year, here's what it's like running all of my bits of a week like that - workshop, talk, party, afterparty - when the conference is in my home city and I don't just put life on hold for a week and live in a hotel:

dylanbeattie.net/2026/02/02/r...

03.02.2026 09:55 ๐Ÿ‘ 12 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Swetugg started from a vision of a .NET conference having great content while still being affordable.

7 years ago I did something that I never thought I would want to do*. I stood up in front of people and dlivered a talk, my first ever talk.

At an international conference, #Swetugg

In just over a week, I'll be back, this time helping as well as talking ๐Ÿคฉ

See you there!

swetugg.se

23.01.2026 09:06 ๐Ÿ‘ 11 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
NDC London, inspiring developers since 2008.

Michelle โ€œMishMannersโ€ Duke
Developer Evangelist
at Twilio

How I used AI voice to help me play MTG
Friday 11.40am, Room 1

NDC London, inspiring developers since 2008. Michelle โ€œMishMannersโ€ Duke Developer Evangelist at Twilio How I used AI voice to help me play MTG Friday 11.40am, Room 1

So keen for @ndcconferences.com London next week ๐Ÿ™Œ๐Ÿ’–. Really excited about this one as I get to talk about some of my favourite things:
- @magic.wizards.com
- Evolution of computing
- AI Voice

Twilio is sponsoring so you can swing by our booth for SWAG, prizes, stickers, and of course a chat.

23.01.2026 01:11 ๐Ÿ‘ 7 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Program with GUTs | NDC London 2026 One of the greatest shifts in modern programming practices has been how programmers across many different domains, languages and environments have embraced unit testing. Good unit testing, however, is...

Join me next Tuesday at @ndcconferences.com NDC London for Program with GUTs.

This full-day session looks at good unit tests (GUTs), what they are and how to write them, whether code you are testing comes from the past, from a prompt or direct from your fingertips.

ndclondon.com/workshops/pr...

20.01.2026 08:36 ๐Ÿ‘ 5 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Cosmic Queries โ€“ The Complex Universe with Sean Carroll - StarTalk Radio Will we find a theory of everything? Neil deGrasse Tyson & Chuck Nice answer Qs on many worlds, entropy, the theory of everything, & more w/ Sean Carroll.

Here I am on Star Talk with @neildegrassetyson.com and @chucknicecomic.bsky.social. It's basically a group AMA, so we talk about black holes and the arrow of time and other cosmic goodies.

startalkmedia.com/show/cosmic-...

20.01.2026 15:30 ๐Ÿ‘ 82 ๐Ÿ” 14 ๐Ÿ’ฌ 4 ๐Ÿ“Œ 0
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Introducing Administration Client Support for the Azure Service Bus Emulator | Microsoft Community Hub Weโ€™re excited to announce administration client support for the Azure Service Bus emulator, extending the emulator beyond messaging operations to include...

Weโ€™re excited to announce administration client support for the #Azure Service Bus emulator, extending the emulator beyond messaging operations to include management capabilities such as creating, updating, and deleting entities locally.

techcommunity.microsoft.com/blog/messagi...

16.01.2026 18:02 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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PubConf London 2026 19:00 Doors Open

PubConf is back in London on January 30th!

Comedy talks from awesome speakers like @henriksen.no @ashbzak.bsky.social @arthurdoler.com @damovisa.me @chris-ayers.com @jominney.bsky.social, live music from @linebreakers.band, food, drinks, karaoke... get your tickets now!

pubconf.io/events/2026/...

13.01.2026 12:11 ๐Ÿ‘ 16 ๐Ÿ” 6 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 3

This is devestating, please help Lars out if you can!

14.01.2026 05:15 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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On 9 January 2026 mine and my family's lives changed forever.
I tell the full story in this video: youtu.be/mNEPSWcOheY

If you want to support my family as well as our local community, consider sharing this post, or donating here: www.gofundme.com/f/we-lost-al...

14.01.2026 02:55 ๐Ÿ‘ 17 ๐Ÿ” 27 ๐Ÿ’ฌ 6 ๐Ÿ“Œ 7