Co-founder & CTO at NOFire AI · Prev Distinguished Engineer / SRE at Elastic

Athens, Greece
Joined July 2014
Panagiotis Moustafellos retweeted
We are back in London next week for Observability & SRE in Enterprise? Join and @spirosoik and @pmoust for a private roundtable about L1/L2/L3 support, coding agents and production reliability. October 22 · London
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Panagiotis Moustafellos retweeted
brig v0.4.0 gives new sandboxes their own networks by default on Linux and on macOS. Run coding agents for different projects on one machine, while keeping their dev servers and test APIs separate. In this demo, one sandbox tries to reach a web server in the other. The connection times out. We then start both with --network shared, and the same request works. You can run unrelated tasks side by side and enable network sharing when agents need to work together. #OpenSource #Sandboxing
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Panagiotis Moustafellos retweeted
Replying to @typesafeai
@typesafeai achieved 46% higher GPU throughput while training Jev using @zymtrace’s cluster-wide, continuous profiling and agentic optimization platform. See how they did it in the link below 👇
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Panagiotis Moustafellos retweeted
brig v0.4.0 limits where your coding agent can send your code and credentials. This release brings egress policy enforcement on Linux! If brig cannot enforce the policy, then the run is refused. Allow the services you need for the job. Then brig enforces your network policy outside the sandbox, so the rules also apply to the scripts and dependencies the agent runs. In this demo, an example domain works. Requests to Github API and a direct connection to 1.1.1.1 are blocked, even from a root shell inside the sandbox. #OpenSource #Sandboxing
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Panagiotis Moustafellos retweeted
Just accept it, AI writes better code than you on average. It's fine.
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Panagiotis Moustafellos retweeted
We’ll be at Open Hackathon this Friday, Sept 25, as a Silver Sponsor. Come by the NOFire AI booth at Zone01, Nea Ionia. Meet the team and tell us what you’re building.
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Panagiotis Moustafellos retweeted
thoughts on Typesafe/Jev: I'm surprised that a general-purpose classifier (or discriminative model) can be just as interesting to the public as a general-purpose generative model. I've worked on search and discriminative models for years, so maybe I should have called this upfront, tbf I never thought about making them general-purpose beyond search. Typesafe also positions Jev really well as "System 1", a complement to the generative models we already have. Humble, unassuming, and sidestepping the frontier-lab warzone. Jev's success could be disruptive to today's agentic systems in many ways, such as tool-calling and routing patterns. Over the last three years the consensus was to use a small generative model for routing, tool calling, MCP etc. Time to pause and rethink such architecture, because we'll probably see tool calling and routing move back to discriminative models. Whoever ships the next Jev-like open-weight base model will likely win the community.
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Panagiotis Moustafellos retweeted
This is true. It wasn't actually possible before 2010 because datacenter networks would bottleneck. We used to design coupled storage/compute where you brought compute close to "big data". But research on "full bisection bandwidth" networks made it possible to essentially just talk from any machine to the storage system at full speed. The disaggregation started then! Databricks and Snowflake started soon after many others followed. Now "Put it on the object store" is the way to go.
"Put it on the object store" remains undefeated. - OLAP: Lakehouse - OLTP: Lakebase - Kafka: Warpstream - Vector Search: Turbopuffer - Git: Cursor Origin
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Panagiotis Moustafellos retweeted
"Dad, what was it like playing CTFs before AI?"
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As someone who has audited dozens of safety-critical systems, built static analysis tools, and used most formal verification and security tools, here are some red flags that should be a caution in taking these claims at face value: 1. There are no comparison benchmarks with 1/
Anthropic
@AnthropicAIApr 7
Introducing Project Glasswing: an urgent initiative to help secure the world’s most critical software. It’s powered by our newest frontier model, Claude Mythos Preview, which can find software vulnerabilities better than all but the most skilled humans. anthropic.com/glasswing
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Panagiotis Moustafellos retweeted
Watching the CI/CD pipeline run 1800 tests for a 1-line change that fixes a typo
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Panagiotis Moustafellos retweeted
Elastic
@elasticMar 20
Elastic is heading to KubeCon Amsterdam 2026 🇳🇱 Visit booth #980 to see how we’re building OpenTelemetry to simplify ingestion, reduce pipeline complexity, and deliver consistent observability across metrics, logs, and traces with a focus on agentic observability. Come see the demos and meet the team: go.es.io/4uGtF3N
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Panagiotis Moustafellos retweeted
"This is not the time to comment on the legality of the recent actions." Greece is an elected member of the UN Security Council. What a disgrace.
Nicholas Maduro presided over a brutal and repressive dictatorship that brought about unimaginable suffering on the Venezuelan people. The end of his regime offers new hope for the country. This is not the time to comment on the legality of the recent actions.
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Panagiotis Moustafellos retweeted
I told Claude to one-shot an integration test against a detailed spec I provided. It went silet for about 30 minutes. I asked how it was going twice and it reassured me it was doing work. Then I asked why it was taking so long:
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Panagiotis Moustafellos retweeted
Here we go! @pmoust from @elastic on stage of the inaugural and sold-out #PyCon Greece in #Athens. Let’s go 🚀 🚀 🚀.
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Panagiotis Moustafellos retweeted
Linus used to speak to engineers in 2012 the way I speak to LLMs now.
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Panagiotis Moustafellos retweeted
🎙️Μόλις ανέβηκε νέο επεισόδιο στη Μικρή Κουβέντα! Σήμερα φιλοξενούμε τον @pmoust και μιλάμε για τα πάντα. Από την πορεία της @elastic μέχρι το πώς αναγνωρίζεις επενδυτικές ευκαιρίες και τη σημασία της συμπερίληψης στην πράξη. #investing ✨✨✨ mikrikouventa.fm/s06/e26/
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Panagiotis Moustafellos retweeted
Elastic
@elastic7 May 2025
We are excited to announce that we’ve entered into an agreement to acquire @keepalerting, an open source AIOps company, to help users manage alerts and automate workflows. Read more: go.es.io/4393LZG
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Panagiotis Moustafellos retweeted
I asked chatgpt's new image model to script and generate a series of comics starring itself as the main character. The results genuinely gave me chills. I'll post them all in a thread below.
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