Platform Engineering at @Replit. I like systems.
Joined December 2021
- Tweets788
- Following479
- Followers558
- Likes12.1K
Ertan retweeted
how does @Replit ensure that all your data is secured at runtime and avoid _most_ Linux kernel vulnerabilities? join @jasondellaluce, @prydonius, @cgbrewster, and me for the first part of the story of how we went Linux Containers -> MicroVMs: frontier.replit.com/sandbox-…
Ertan retweeted
We just published our blueprint for the Self-Driving Company.
At Replit, engineers nearly tripled code output in the first half of the year. Incidents stayed flat. Then design and technical support started shipping too. Today we use Replit wall-to-wall to build every function of our company.
Over time, it became clear that models are the easy part. The hard part is the Agent Habitat: access control, data governance, security.
We are making useful intelligence accessible to everyone. As it was always meant to be.
replit.com/blog/rise-of-self…
Ertan retweeted
We believe by the end of 2030, every Fortune 500 will be a Self-Driving Company.
That doesn’t mean AI replaces people.
It means people remain in the driver's seat leading judgment, creativity and taste, while agents fuel execution.
This is the Self-Driving Company.
replit.com/blog/rise-of-self…
Ertan retweeted
When you talk to successful founders, they always wish they'd hired fewer top managers from outside. I don't think I've ever met a founder who wished he or she had promoted fewer people from within.
Ertan retweeted
The consistent advice is, "don't hire big tech execs"
The fundamental problem is that they've been RL'ed by an environment in which success is measured by headcount. They will make your company bloated and ineffective because in their experience, that's what success looks like
Ertan retweeted
With my colleague Dimiter Kramer at @DeepInfra, we proved the Courtade–Kumar conjecture. We show that a delicate refinement of the conjecture, incorporating the output bias, admits an induction on dimension.
Paper: mnsaglam.com/papers/courtade…
Ertan retweeted
You can access OpenAI models on Replit for free.
Our router also makes high-end models incredibly cost-efficient.
If you’re a business looking for an independent, multi-model alternative to Cursor, we’d be happy to fund your transition.
We’re ending our partnership with Cursor following its acquisition by SpaceX. Under our proposal, Cursor’s direct access to our models would end on November 12.
We know that the people most affected by this decision are the developers who rely on OpenAI models in Cursor. We care about their experience in this transition and we’re ready to go above and beyond to support them.
openai.com/index/our-decisio…
Ertan retweeted
This is one @restatedev cell during the time when @Replit launched the free mode for their agent.
Close to 25k durable actions/sec in a single cell. And there are quite a few cells. Makes this probably one of the highest volume durable execution use cases out there.
Something we @restatedev are incredibly proud of is powering Replit's agents with durable execution.
Their scale and the sophistication of how their agent architecture uses durable execution is absolutely amazing. Truly an honor to be a part of that.
Ertan retweeted
My hot take is that a human should never read another human’s AI output
The writer labors so the reader need not
Ertan retweeted
LLMs benefit greatly from an open ecosystem and it’s the best way to ensure America stays competitive.
Replit has been committed to supporting an open ecosystem since we first released our open coding model in 2023 (one of the first on the market).
Our letter to congress:
For my first post, I’m sharing a letter @NVIDIA signed on why open models matter.
AI will transform every industry, power every company, and be built by every country.
Open models strengthen safety and cybersecurity, accelerate innovation and diffusion, and enable sovereignty.
The world needs both frontier closed models and frontier open models.
images.nvidia.com/pdf/Open-W…
Ertan retweeted
There is (still) immense value in being the expert on:
databases
performance engineering
benchmarking
distributed systems
Ertan retweeted
Replit Head of AI @pirroh says soon we'll see people using far fewer apps because they'll have replaced them with agents:
"The reason is, we built UIs, computers in this way in the last decade because the only way we had to interact with them was through the keyboard and mouse, which are error-prone."
"But the way you work is, you talk to your colleagues. You discuss, decide what to do. You express in natural language your intent, and then you either delegate or get the job done yourself."
"But, guess what? Agents do exactly that. The more autonomous we make them, the more capable we make them, the more they're going to be able to complete tasks end-to-end."
Ertan retweeted
Hey mom, I’m on TV!
Combining frontier models from @claudeai with frontier agents at @Replit helped us discover a lot before major model releases, and helped us keep improving the agent experience for users.
Trying to break models is fun.
Ertan retweeted
The nice thing about an exponential is that is exponential, no matter the scale.
At #GoogleCloudNext, @stkenned shared how Cloud Run powers @Replit's deployments:
- A year ago: 150k apps
- Today: > 1M apps
And the chart looks exactly the same, just a different scale.
Ertan retweeted
Vibe coding is changing how software gets built. But as AI agents write more of our code, the question security teams are asking has shifted from "Can AI build this?" to "Can I trust what AI builds?".
At Replit, we believe the answer has to be yes, not through blind faith, but through architecture. Every layer of the Replit infrastructure where customer code runs, from the development sandbox to the production deployment, is designed with defense in depth. The Replit platform itself, our control plane, is also implemented with these principles in mind. No single control is the last line of defense. Every layer assumes the one above it might fail.
This thread is a detailed walkthrough of how we think about security across the stack, written for the people who need to evaluate it: CISOs, security engineers, and teams considering Replit for production workloads. 🧵
Ertan retweeted
Meet Replit Security Agent - providing comprehensive app security reviews in minutes
And you get $5 in credits to try it for a limited time
Security Agent’s hybrid static analysis and AI-scanning approach is first of its kind:
- Acts on custom threat model to review full codebase
- Resolves vulnerabilities in parallel using background tasks
- Reduces false positives by 90%
Powered by @semgrep + @HoundDogAI. Keep vibe coding safely 🔒
Ertan retweeted
Replit Agent 4 is even smarter now with Claude Opus 4.7!
50% off for a limited time. Go try it now ↓
Ertan retweeted
Ya'll worried about AI Coding slop, when there as an entire army of n8n experts who are installing unmaintainable visual workflow spaghetti in small/medium sized businesses at scale
Literal merchants of complexity. Its so much worse than using claude code. It's an artifact of being stuck 6 months in the past and n8n is all you know.
Ertan retweeted
this is honestly why the most important measure of progress in building true intelligence is our ability to eliminate prompt engineering.
thanks to @karpathy , now i have cracked the mystery why my agent doesn't follow my instruction closely enough.
