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Julien Lengrand-Lambert 🥑👋

@lengrand.fr
1K followers 424 following 609 posts

Head of Developer Relations 🇫🇷🇳🇱🇪🇺🇺🇦 ✨ Sucker for good #DX, #kotlin #GoogleDevExpert ✨, Editor 🇳🇱 #Java magazine . Growing my own food. #devrel #climate 🌐 lengrand.fr

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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 11h
From coding all day to managing features in hours 🚀 Maestro lets AI agents build in parallel while YOU stay in control. #AIAgents #DeveloperTools
lengrand.fr
From Assisted to Orchestrated AI Development using Maestro
My experience with Maestro, an AI agent orchestration tool. By combining spec-driven Auto Runs with a feedback loop, it transforms the developer role from writing code to managing features.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 19h
Last week was ING's internal #Tech Fest! After months talking about it, and helping curate the content it was amazing see it come to life! Great to meet colleagues of all horizons, and share the 1ES story. 1/2
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 29/09/2026
First time playing DnD with the kiddos :D. 10 year old went for a Paladin, while the 5 year old went full pyromancian. Why am I not surprised xD
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 29/09/2026
I've been diving a bit into geneaology the past year, in my free time. My family tree gets pretty complex very quickly... And last week I read an article from Nicolas on how he uses AI to do this. I hadn't thought about it. Results : 250+ elders found in a couple days. Passionating, so TY Nico! <3
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 23/09/2026
AI companies business case is about people productivity raising. And gosh I make use of AI every day. But if everyone's productivity raises as much, is anyone getting ahead except for Anthropic and co? 1/4
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 08/09/2026
So far the only change I've seen from trying out Linkedin premium for a month is an alarmingly increased amount of spam. Multiple daily emails, each providing exactly 0 value. Pretty sure what my next step is.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 05/09/2026
I wrote about #maestro, an agent orchestration application in the last 🇳🇱 #java magazine. Happy to do a nice shoutout to an app I've been using extensively the past year, and helped me get better at using #AI for my side projects. It even made it up the cover :P
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 02/09/2026
Folks @zonneplan.bsky.social . I love you guys, been a customer for a while. You came install a battery monday, it never connected to the app. No way to contact anyone human, your Kiki AI keeps hanging on me and giving me wrong info. But you do send me the bill ? 8 DAYS? What is happening here?
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 02/09/2026
I'm using #AI every day, and I think I know its capabilities very well but sometimes I'm still surprised. My daughter's lamp was broken. Sent a photo about the circuit to #Claude, who directly told me the cable was at fault because of a missing resistor. Color me impressed.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 18/08/2026
Hey beautiful @obsidian.md folks. I love your product, and I'm definitely the only one. Why are .dotfiles not synced in Obsidian Sync? You're the default for most AI setups. How can it be that .claude, .codex, .... are all unsupported in your official sync paying feature? Please take my money <3
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 27/07/2026
Started #bouldering again after having to stop for 2 years due to an injury and I can't use Apple Touch ID any more. A detail I had forgotten 😅.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 08/07/2026
Third day today that I'm forgetting to drink a coffee I'm making. How's your day going? :D
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 08/07/2026
It's always surprising to me how the solution "work's been exhausting today, I don't want to do sports" actually is "go do sports regularly anyways, because then work is less exhausting". Body first, mind follows. Have to reteach myself that once in a while.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 05/07/2026
Between the Spam, the constantly higher prices and the lack of actual valuable features; I think it might actually be time to let Meetup go. Especially since the market has good alternatives with traction those days. Farewell, you've served the community well but it's just time to let you go!
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 05/07/2026
What an ugly game that was to watch.... The opposite of the football you want to see :s.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 04/07/2026
Nugget of wisdom about learning from HackerNews today : "One thing I wish this emphasized more is that adults often confuse learning with consuming material about learning, which is why my useful rule has become: if I'm not producing errors, I'm probably not practicing yet"
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 03/07/2026
Ordered a new screen and the order has been blocked in "processing" for the whole week. Delivery date promised showing Monday on the website. Support says "usually happens within 3 days". After 3 days, orders from another shop. Same story. Now having 2 screen orders in limbo mode. Curse is real💀
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 30/06/2026
We're planning to watch the 🇳🇱 game tonight together with the kids, and I feel like going through this day without knowing the outcome yet will be like walking blindfolded through a minefield 😅. Here's to hoping!
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 25/06/2026
Me today
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 21/06/2026
I promise you KLM, this is my last name. And it isn’t even that complicated. I like that they tell me what a name should be made of 😅
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 19/06/2026
Color me surprised :). Turns out somehow my info is part of the main models training data. I expect most of us to be. What is more worrying though is that there are some serious hallucinations going on. How many people think I'm actually a politician ? 😊 www.intheweights.com
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 18/06/2026
I'm looking into doing some redesign in my house and we've reached the point where there's so much AI online that I can't see any more what's possible to build and not. Another year and I bet there'll be a space for AI free content locations. AI has good use cases, this doesn't feel like it
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 16/06/2026
Rooting for two countries :). #france #netherlands. Que le meilleur gagne
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 16/06/2026
Past the announcement itself, which looks pretty interesting what I find most insightful is that this new tool making #1 on HackerNews today announces support for #kotlin, while #Java is not even mentioned. I think it's a first? Is the landscape changing for good? www.iroh.computer/bl...
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 09/06/2026
So I've spent some time yesterday creating a Claude skill to do market research for all my little app ideas and rank them by opportunity. After looking at 250+ ideas the one that ranks highest is an app that uses AI to do market research for all little app ideas and rank them by opportunity 😅.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 06/06/2026
I'm alone home and painting the stairs this weekend and I'm facing the hard choice of locking myself up with the computer, or locking myself down with food and beverages. Cruel choice!
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 04/06/2026
It’s this time of the year 😊. Always doing my best to join JSpring, a great java conference right in my hometown . Best way to see amazing speakers, exchange insights about new developments and stay In touch with the community . See you there! 🎊
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 30/05/2026
Typical Saturday morning 😁. Morning you all! 🏑
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 23/05/2026
It's been 12 times that I tell Youtube that I'm actually ok with listening to videos in their original language and that I didn't need auto AI dubbing. So I'm officially canceling my Youtube premium account. Was long overdue anyways. I can't believe this is actually something people would want.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 22/05/2026
Now, that's new but I have to admit that's kind of a fun one :). #3dprinting
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 19/05/2026
Starting the day with a canceled bus, followed by a canceled train. Ask me again why I commute by car now 😅
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 18/05/2026
Turns out my blog had been hacked after all... And Claude actually helped tremendously to find a solution (after being wroung about its early conclusions though 😬). TY all for your help yesterday! lengrand.fr/my-blog-... #claude #security
lengrand.fr
My blog was hacked and Claude and I just fixed it
My self-hosted Ghost blog got silently hacked via a malicious script injected directly into the database, targeting only Windows users. I traced the source of the issue and fixed it quickly with the help of Claude Code.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 18/05/2026
If you need to open a > 1MB text file, your safe bet is still Sublime. Even almost 10 years later, doesn't even break a sweat
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 17/05/2026
❤️Need your help!❤️ : Would you please click on lengrand.fr/my-exper... and let me know if you get a fraudulent captcha pop up? I've had 2 readers report it, but cannot reproduce nor find anything suspicious at all on my server.
lengrand.fr
My experience using Junie for the past few months
Junie is one of the best coding agent I've been trying out so far. Very well integrated with IntelliJ, great for Kotlin, and the test first focus makes it quite good at coming out with good results. However, I do miss the capability to only accept part of a solution and it can be very slowwwwww.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 15/05/2026
Copilot, Copilot _everywhere_
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 15/05/2026
You know that uneasy feeling about not knowing how to navigate your codebase after a few weeks away from it? With AI writing part of my code, I find that feeling to be 10x stronger on my projects, to the point that sometimes it's simply easier to rebuild the feature from scratch...
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 14/05/2026
Touching grass today. Grass smells funny
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 08/05/2026
It is with great pleasure that I announce you that today, I have used a couple of the box with all leftover screws I've collected over the years in the infamous coffee container. Those days do happen!
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 07/05/2026
Gotta love that Excel is pushing "importing data from pictures" as one of the main sources, while importing from a formatted CSV file is considered "legacy". Non deterministic data FTW!
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 05/05/2026
Baarle-Nassau is famous for its incredibly complex border with the Belgian municipality of Baarle-Hertog. The two towns are inextricably intertwined, forming a patchwork of 30 enclaves. The kids loved playing being in 2 countries at once 😛
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 30/04/2026
Just before the weekend, some thoughts about how #coding at home has changed for me since #GenAI showed up.
lengrand.fr
Ways in which GenAI has changed the way I write code so far
AI has fundamentally transformed my developer workflow, from stack choices and IDE preferences to how git is used. I using Claude and orchestration tools like Maestro to guide implementation while tests serve as guardrails.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 28/04/2026
In the era of smartphones, this 400 year quote is interesting 😊 : "All of humanity's problems stem from man's inability to sit quietly in a room alone." -Blaise Pascal
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 25/04/2026
With Claude Code becoming more expensive and more limited by the day it's time to investigate alternatives. I'm a big fan of the team behind Kilo since Day 1. Turns out they have a CLI and since it's based on OpenCode I can straight up plug it in Pedram Amini's Maestro. Let's GOO!
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 24/04/2026
Had a great time at MLCon yesterday. Super happy to see the results of a program I've helped build :). Lots of great speakers, super organization, and leaving with some nice insights about platforms and AIOPS. But first and foremost, as always with conferences : Energy to ship! 🚀
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 24/04/2026
Today is the day apparently. 1k followers, ty all 🎉. If I believe my experience, that's the moment 10 or so of you are gonna unfollow so this message looks silly haha.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 24/04/2026
First time I actually get on to this "let's build skills" movement. Watching lots of indie SAAS videos lately, built a small skill that extracts knowledge from those videos and makes skills from them. Maybe you find that interesting 😊. Oh, and it credits authors of course!
github.com
my-skills/skills/video-to-skills at main · jlengrand/my-skills · GitHub
Contribute to jlengrand/my-skills development by creating an account on GitHub.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 22/04/2026
Great meetup with Steve Sanderson teaching us at ING about advanced GitHub Copilot techniques. Learnt hips, and we even broke the platform 😬. Ty all for joining !
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 20/04/2026
And the spamming/scamming continues, it's really time to start investigating Luma.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 17/04/2026
After reading many posts and comments saying that Claude is becoming dumber, I can affirm that I also feel, in fact, that Claude is becoming dumber.
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Julien Lengrand-Lambert 🥑👋 @lengrand.fr · 14/04/2026
Last week I gave the closing Keynote at ING's frontend summit. I've been building communities for over 10 years and for me the whole AI craze isn't about tech. It's about how much energy is creates in people, seeing them build stuff for fun, challenge each other. People are awesome, and humbling.
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