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Eduardo Hernacki

@runlevel0.me
132 followers 395 following 206 posts

Senior/Principal Software & Cloud Engineer Uplifts software teams, knows a thing or two about AWS, prefers functional programming. Organizer of @elixir-munich.org and the FP Stammtisch Munich. #AWS #ElixirLang #Rust #TypeScript

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Reposted by Eduardo Hernacki
Julian @j4nk.dev · 22/09/2026
There's an opportunity to try out @atmo.rsvp for the FP Stammtisch next week hosted by @runlevel0.me If you're in Munich and interested in #Functional #Programming #FP - give it a try! atmo.rsvp/p/j4nk.dev/e...
atmo.rsvp
FP Stammtisch Munich
Join us for a relaxed evening at Leo's Lounge in the heart of #Munich. This #meetup is about connecting with other people who care about #functional #programming and applying it in practice. There are...
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Lars Wikman @lawik.bsky.social · 03/09/2026
We make so many choices. Every one of them could be an act of resistance. Julian Köpke will speak on how to move against the grain. goatmire.com/talk/a-rebel... #elixirlang #goatmire
goatmire.com
A Rebel’s Guide to Digital Independence by Julian Köpke
Cory Doctorow calls it Enshittification: the systematic demolition of platforms that exploit users and the businesses depending on them, until nobody is happy. Now the same corporations are training…
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Eduardo Hernacki @runlevel0.me · 02/09/2026
Just signed up for pushin.eu! pushin.eu/runlevel0
pushin.eu
Eduardo Hernacki (runlevel0) · Pushin.eu
Uplifts software teams, knows a thing or two about AWS, prefers functional programming.
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Kelsey Hightower @kelseyhightower.com · 27/08/2026
I love this framing, but in reality we treat developers of our internal platforms like users, and not customers, because most enterprise developers cannot behave as customers, and are forced to use whatever the platform engineering team gives them.
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Alex Koutmos @akoutmos.bsky.social · 17/08/2026
🥳🎉Today is the day🎉🥳 @hugobarauna.com, my brother and I are ready to release Elixir for Finance! We've poured all of our knowledge and know how into what we believe is one of the best programming+finance books out there 😍. 👉 financialelixir.dev #ElixirLang #Erlang
Hugo and I pointing at our book
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Evan Czaplicki @acadia.engineering · 18/08/2026
Acadia is out today! Bringing the benefits of Elm to SQLite and PostgreSQL: - Friendly error messages - Custom types for precise column data - Simple module system for easy reuse Check it out! acadia.engineering/blog/rethink...
acadia.engineering
Rethinking Database Programming
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Jason Gorman @jasongorman.bsky.social · 31/07/2026
The original sin of software development
Infographic comparing two views of software development. On the left, a complete feedback loop surrounds a central business goal ("Reduce missed medication doses"). The loop flows through six stages: Understand → Specify → Build → Ship → Learn → Adapt, showing that each shipped increment is an experiment whose real-world feedback informs the next iteration. On the right, a contrasting diagram shows a limited view of development as only Specify → Build → Ship, enclosed in a dashed red outline labelled as the process many teams mistakenly optimise. Beneath it, a warning explains that this narrow focus leads to local optimisation, including building the wrong thing faster, more work in progress, delayed feedback, misalignment with business goals, and little real progress. The overall message is to optimise the whole learning loop, not just software production.
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Jason Gorman @jasongorman.bsky.social · 30/07/2026
Every time I see a social media post trumpeting Anthropic as some kind of software engineering exemplar, I make a point of commenting thusly. Yes indeed, folks. You too could achieve one 9's reliability.
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Charles Dong @chardoncs.dev · 26/07/2026
AI-assisted programming isn't that you sit back and relax. For building a production-ready product, you have to manage iterations, organize requirements, do QA, raise bugs to AI, and review code. You can't just vibe out a serious project without knowing what you're doing.
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Trond Hjorteland @trond.hjorteland.com · 18/07/2026
v1.1 is planned for September, ahead of KanDDDinsky in October. New entries, more essays, and further updates to the theoretical framework. The series keeps going, and so will the book. www.organisationaldysfunctions.com #OpenSystemsTheory #SocioTechnical #OrgDesign
organisationaldysfunctions.com
Organisational Dysfunctions
A catalogue of organisational dysfunctions explained through Open Systems Theory. For everyone who has felt the friction of broken structures but lacked the language for it.
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Eduardo Hernacki @runlevel0.me · 17/07/2026
There's a new FP Stammtisch #Munich announced for July 30th: luma.com/2jcawymw Come join us if you are curious about, interested in or care about pragmatic #FunctionalProgramming! Everyone is welcome, regardless of experience level or background.
luma.com
FP Stammtisch Munich · Luma
Join us for a relaxed evening at Leo's Lounge in the heart of Munich. This meetup is about connecting with other people who care about functional programming…
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Eduardo Hernacki @runlevel0.me · 14/07/2026
Just found this guide on #FullStack apps on Gleam lukwol.github.io/gleam-guide/, great for folks getting started with @gleam.run!
lukwol.github.io
Introduction | Full-stack Gleam
A practical guide to building full-stack apps with Gleam
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Eduardo Hernacki @runlevel0.me · 14/07/2026
I have just finished the read and can only say that this is relevant to anyone working in Tech nowadays. Strongly recommended!
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Dag Brattli @dbrattli.bsky.social · 17/06/2026
F# runs natively on .NET, and Fable compiles it to JavaScript, Python, Rust, and the BEAM. Five runtimes, one type-checked source, runs anywhere your stack needs it. BEAM is what Ericsson built to keep phone switches from ever going down. fable.io #fsharp #fablecompiler
fable.io
Fable · JavaScript you can be proud of!
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Gleam News @gleam-news.bsky.social · 15/06/2026
Functional Domain Modeling with Gleam? Yes, please! Watch Eduardo's talk here: www.youtube.com/watch?v=15Sc... @runlevel0.me #gleamlang #gleamnews @codebeam.bsky.social
screenshot from a recording of a talk. Left part of the screen shows a slide, right shows a person standing behind a lectern. Lectern is branded with Code BEAM Europe 2025 logo and dates.
The slide depicts two book covers and Gleam's logo - pink starfish.
Text on the slide starts with a headline "Why Functional? Why Gleam?". Beneath there are lines of text: - DDD is great, but OOPs!; - Typed Functional Approach;  - Accurate Domain Representation; -Gleam Brings all this to the BEAM
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Eduardo Hernacki @runlevel0.me · 11/06/2026
An excellent showcase of how great testing tools and good testing looks like in practice!
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ernesto @ernesto.bsky.social · 11/06/2026
Sasa Juric's famous chart, listing a web technology stack alongside a column common dependencies and one that just repeats "erlang" for everything
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Eduardo Hernacki @runlevel0.me · 03/06/2026
Why is there something instead of nothing?
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Eduardo Hernacki @runlevel0.me · 03/06/2026
Yes, this is what #TDD is all about, even if you don't use #ElixirLang! www.youtube.com/watch?v=5IJs...
youtube.com
Test-Driven Elixir: Fast Track to Senior Engineer – Britton Broderick | ElixirConf US 2025
YouTube video by ElixirConf
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Lars Wikman @lawik.bsky.social · 30/05/2026
There should be official posts soon. I had the brainwave and some spare effort to build this. The Erlang Ecosystem Registry. Register your company. Show how many we actually are. Keep up to date on major ecosystem initiatives. All free. marketing.erlef.org/news/registr... #elixirlang #erlang #gleam
marketing.erlef.org
Announcing registry.erlef.org
Today you'll find something new at registry.erlef.org. As the the Erlang Ecosystem Foundation works to serve its members, sponsors and ecosystem we believe in the value of a canonical, central and trusted...
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austin (e/accordion 🪗) @thebadcode.com · 27/05/2026
they don’t want types, they don’t want safety, they want to endlessly *critique* type safety
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Mark Erikson @acemarke.dev · 06/05/2026
there's something very satisfying about realizing you know two very excellent people who don't know each other yet, and getting to introduce them. Awesome Person 1, meet Awesome Person 2. the world is now a better place. repeat.
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Anna Mazzola @annamazz.bsky.social · 01/05/2026
Some useful public speaking tips from Freud here.
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Elixir, Erlang & Gleam Munich @elixir-munich.org · 27/04/2026
After some date juggling, our Elixir & Erlang Munich - May 2026 Meetup is officially on! We'll have @j4nk.dev demonstrating how to integrate Rust into a Phoenix LiveView app using WebAssembly in the browser and Rustler in the backend. www.meetup.com/elixir-munic... #ElixirLang #Erlang #Rust
meetup.com
Meetup | Group not found
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Eduardo Hernacki @runlevel0.me · 19/04/2026
Announcing our next Functional Programming Stammtisch event! Whether you use FP at work, on side projects, or are simply curious, you’re welcome to join! 🗓️ Wednesday, Apr 29 - 18:00-22:00h 📍 Leo's Lounge Restaurant Bar More infos & RSVP here: luma.com/ezy53xth #FP #Munich #TechCommunity
luma.com
FP Stammtisch Munich · Luma
Join us for a relaxed evening at Leo's Lounge in the heart of Munich. This meetup is about connecting with other people who care about functional programming…
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Reposted by Eduardo Hernacki
Benjamin P Taylor @antlerboy.com · 18/04/2026
Most 'transformation' fails because it tries to change behaviour without changing constraints. People aren’t resisting; the system is working exactly as designed.
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Jo Van Eyck @jovaneyck.bsky.social · 18/04/2026
Agentic Engineering Weekly for April 11-18, 2026 agentic-engineering-weekly.jovaneyck.be/agentic-engi... #agenticengineering #opus47 #jevonsparadox
agentic-engineering-weekly.jovaneyck.be
Agentic Engineering Weekly for April 11-18, 2026
Generation never was the bottleneck. This week the industry finally started noticing and we're landing on the uncomfortable truth: attention might be all transformer architectures need, but our own at...
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jbz @jbzfn.bsky.social · 17/04/2026
🦙 Friends Don't Let Friends Use Ollama | Sleeping Robots sleepingrobots.com/dreams/stop-... #ollama #cpp #llm #opensource
sleepingrobots.com
Friends Don't Let Friends Use Ollama | Sleeping Robots
Ollama gained traction by being the first easy llama.cpp wrapper, then spent years dodging attribution, misleading users, and pivoting to cloud, all while riding VC money earned on someone else's engine....
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Elixir, Erlang & Gleam Munich @elixir-munich.org · 13/03/2026
Our Elixir & Erlang Munich - March 2026 Meetup has just been announced! This time we'll have @j4nk.dev demonstrating how to integrate Rust into a Phoenix LiveView application using WebAssembly in the browser and Rustler in the backend. www.meetup.com/elixir-munic... #Elixir #Erlang #Rust #Meetup
meetup.com
Elixir & Erlang Meetup - March 2026, Thu, Mar 19, 2026, 6:30 PM | Meetup
We're excited to host our March 2026 Elixir & Erlang Meetup! **Agenda**: 18:30 - Doors open, networking, food, drinks 19:00 - **Julian Köpke:** The BEAM-Rust Sandwich **
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Eduardo Hernacki @runlevel0.me · 11/03/2026
Just migrated to @eurosky.social 😁
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Eduardo Hernacki @runlevel0.me · 02/03/2026
I'm starting a monthly get together in Munich for people who care about functional programming and using it in practice. Whether you use FP at work, on side projects, or are simply curious, you’re welcome to join! Details and RSVP here: luma.com/o81km60y #FP #Munich #TechCommunity
luma.com
FP Stammtisch Munich · Luma
Join us for a relaxed evening at Leo's Lounge in the heart of Munich. This meetup is about connecting with other people who care about functional programming…
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GOTO Conferences @gotocon.com · 22/02/2026
Smart people in the right environment move incredibly fast. Then they see how slow most places really are. As @tastapod.com puts it: great teams ruin you for other jobs.
youtube.com
Why Great Teams Ruin You for Other Jobs @daniel-terhorst-north
Check out the full version on our YouTube channel now! #GOTOcon #DanielTerhorstNorth #DanNorth #DevHumor #Developers #TechTalk #EngineeringCulture #DevLife #Programming #SoftwareEngineering…
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Unison @unison-lang.org · 19/02/2026
We have a consulting group, now open to work in a variety of languages, including Scala, Haskell, Rust, Elm, and of course Unison. More details here: www.unison-lang.org/blog/consult... Please boost to help get the word out. And we'd love to hear from you if you're interested in working with us!
unison-lang.org
Unison Computing now has a consulting group · Unison programming language
We are spinning up a consulting group, now open to work in a variety of languages, including Scala, Haskell, Rust, Elm, and of course Unison. Our goal is a self-sustaining model in which a mix of consulting and product revenue funds development of Unison-based tech well into the distant future. We aim to be cash flow positive as a business in the next 12 months and could use your help in getting there.
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Jaleel Akbashev @jaleel.bsky.social · 16/02/2026
Actively looking for my next role as a Senior Software Engineer Focus: iOS (Swift). Also backend (Java/Kotlin, TS, Swift). 10+ years shipping apps. Love building scalable and reliable systems 🇩🇪 German citizen (EU work auth) CV: github.com/akbashev/akb... Reposts appreciated 🙏 #Swift #iOS #Backend
github.com
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Jason Gorman @jasongorman.bsky.social · 03/02/2026
AI stans warn us not to “get left behind”. The reality is the people who really are getting left behind are the ones who think the bottlenecks and blockers they’ve struggled with in the past will magically get out of the way of the code-generating firehose. codemanship.wordpress.com/2026/01/12/t...
codemanship.wordpress.com
The Great Filter (Or Why High Performance Still Eludes Most Dev Teams, Even With AI)
In my post about The Gorman Paradox, I compare the lack of any evidence of “AI”-assisted productivity gains to be found out here in the Real WorldTM with the famous Fermi Paradox that a…
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Eduardo Hernacki @runlevel0.me · 30/01/2026
I'm now on Nolto :D nolto.social/profile/runl...
nolto.social
Nolto - Professional Social Network
A professional social network that runs on the ActivityPub federation protocol, focusing on privacy, accessibility, and a healthy user culture.
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Liz Fong-Jones (方禮真) @lizthegrey.com · 29/01/2026
You can vibe code your way to a working prototype. You cannot vibe code or one-shot your way to a competitive product that works at scale. The hard part isn't writing code; it's the architectural supervision.
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tante @tante.cc · 15/01/2026
"Software is no longer seen as an asset, as something to care for, to maybe even take pride in. It’s a throw-away product. Like a napkin. Just get one quick, wipe your mouth and throw it away. Like a novelty t-shirt." Software as Fast Fashion
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Eduardo Hernacki @runlevel0.me · 05/12/2025
Hi everyone! I'm looking for a new role/project and would appreciate your support. If you hear of any relevant opportunities please reach out! 💼 Senior/Lead/Principal Engineer, Cloud Engineer or Engineering Manager 🌎 Hybrid in Munich or remote in Europe/UK 📅 Available from 15 Jan 2026
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Trunk-Based Thierry (they/them) @tdpauw.bsky.social · 27/11/2025
The art and skills for delivering software in much more smaller incremental steps were lost with the global adoption of Pull Requests.
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Eduardo Hernacki @runlevel0.me · 25/11/2025
Damn, the folks at @elixir-munich.org never cease to impress me. It's just a bunch of niche and knowledgeable people that I wish I could work with every day!
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Rob Bowley @robbowley.net · 24/11/2025
Scooby do meme with fred about to pull the cape off a villain labelled product engineer. In the second frame he has revealed the villian and is labelled agile software developer
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Eduardo Hernacki @runlevel0.me · 21/11/2025
Does anyone here know which books one should read to get *really* good with #Postgres? #PostgreSQL #LazyWeb
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Julian @j4nk.dev · 19/11/2025
I started a lu.ma calendar for SWE meetups in Munich: luma.com/devmuc Please share & subscribe if you're interested in meeting people in #meatspace Next up: @elixir-munich.org on Tuesday, 25th. Nov. #munich #meetup #swe #elixir
luma.com
DevMuc · Events Calendar
View and subscribe to events from DevMuc on Luma. Events about Software Engineering in and around Munich.
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Kevin Gosse @kevingosse.net · 19/11/2025
Focusing on the Rust Unwrap in the CloudFlare outage is really the scalability equivalent of "When a sage points to the moon, all the fool sees is the finger". At that scale, failures *will* happen. Programming error are unavoidable. What's interesting is why it took down the entire system.
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Terrateam @terrateam.io · 14/11/2025
No, hiring isn't hard for #OCaml. The Blub paradox is real. I have 30 resumes in my Inbox. The hard part is saying no. terrateam.io/blog/is-ocam...
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Uncle Joe @sydseter.com · 07/11/2025
Did you know that according to ISO 27001, 8.28 Secure coding, pair programming, refactoring, and test-driven development are considered to be secure coding practices? Next time someone ask, shh, just let it happen!
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Code BEAM @codebeam.bsky.social · 05/11/2025
At Code BEAM Europe 2025 @runlevel0.me : Functional domain modeling in Gleam. Make business logic elegant and safe.
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Eduardo Hernacki @runlevel0.me · 29/10/2025
One of the most beautiful songs ever made: www.youtube.com/watch?v=s2EJ... #Death
youtube.com
Voice of the Soul
YouTube video by Death - Topic
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Julian @j4nk.dev · 28/10/2025
Had to make this
Clown applying makeup meme:
1. OOP allows us to model the real world
2. Memorize all 23 patterns from Gang of Four book
3. LazySingletonAspectInstanceFactoryDecorator
4. *FP is too complicated*
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