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mlejva

Re:The VMs Powering Mobile Agents (Instinct, Claude Code) on Wednesday September 09, 2026 @05:35PM (#49634740)
We wanted a cloud computer for our agent that would be as close to a metal box as possible. No docker, no containers, etc.

Many of our users run containers and even k8s or k3s inside the sandbox. This is much easier to do when you have a VM and not container inside the VM

Re:The VMs Powering Mobile Agents (Instinct, Claude Code) on Wednesday September 09, 2026 @05:33PM (#49634724)
I'd suggest look at your own problems. Tomas (my co-founder) and I built E2B back in 2023 because we needed a cloud computer for our agent back then.
Re:The VMs Powering Mobile Agents (Instinct, Claude Code) on Tuesday September 08, 2026 @11:05AM (#49611416)
Hey everyone, I'm the CEO of the E2B - the VMs that the article talks about.

Happy to answer your questions!

Re:Ask HN: Who is hiring? (February 2026) on Monday February 02, 2026 @12:36PM (#46858726)
E2B (https://e2b.dev) | SF/Bay Area/Prague (CZ)/Europe | full-time | [Platform | Security | Distributed Systems | Systems | Frontend | DevRel] Engineer

At E2B, we're building an open-source computer for AI agents. Imagine you want to run 100k claude codes simultaneously, and all spin up in milliseconds.

We're a Series A startup with 8+ figures of annual revenue. We've raised over $37M and have customers that are both exciting new startups (a lot of companies with billboards around SF are our customers and enterprises. We're scaling fast, hiring all over the place, have 5+ years of runway, and a roadmap full of exciting features to build.

If you like solving hard problems, moving fast, and can excel in a bit of chaos, I'd love to chat. Send me your work to vasek[at]e2b.dev.

Re:Ask HN: Who is hiring? (October 2025) on Wednesday October 01, 2025 @02:52PM (#45441705)
E2B | SF (US) or Prague (CZ), both on-site | [Platform | Security | Distributed Systems | Sales] Engineer/DevRel Engineer | https://e2b.dev/careers

E2B is an open-source infra devtool that gives AI agents cloud computers that we call sandboxes.

We're Series A startup with 7+ figures revenue. We've raised over $32M and have customers like Perplexity, Hugging Face, Manus, X, MSFT, or Groq. We're growing double digits every month, have 5+ years of runway, and a full roadmap of exciting features to build.

I'd love to chat if you want to help us with some of the scaling challenges, DX, or new products!

Feel free to send me your projects to vasek[at]e2b.dev.

Re:Ask HN: Who is hiring? (August 2025) on Friday August 01, 2025 @05:18PM (#44762624)
E2B | SF (US) or Prague (CZ), both on-site | [AI | Platform | Systems | Distributed Systems | Customer] Engineer/DevRel Engineer/Head of Engineering | https://e2b.dev/careers

E2B is an open-source infra devtool that gives AI agents cloud computers that we call sandboxes.

We're Series A startup with 7+ figures revenue. We've raised over $32M and have customers like Perplexity, Hugging Face, Manus, or Groq. We're growing double digits (sometimes triple digits) every month, have 5+ years of runway, and a full roadmap of exciting features to build.

I'd love to chat if you want to help us with some of the scaling challenges, DX, or new products!

Feel free to send me your projects to vasek[at]e2b.dev.

Re:Ask HN: Who is hiring? (July 2025) on Wednesday July 02, 2025 @12:37AM (#44440302)
E2B | SF (US) or Prague (CZ), both on-site | [AI | Platform | Systems | Distributed Systems | Customer Support] Engineer/DevRel | https://e2b.dev/careers

E2B is an open-source infra devtool that gives AI agents cloud computers that we call sandboxes.

We have revenue, customers like Perplexity, Hugging Face, or Mistral, growing fast, multiple years of runway, and a full roadmap of exciting features to build.

I'd love to chat if you want to help us with some of the scaling challenges, DX, or new products!

Feel free to send me your projects to vasek[at]e2b.dev.

Re:Ask HN: Who wants to be hired? (May 2025) on Thursday May 01, 2025 @11:44AM (#43859259)
E2B | Distributed Systems/AI/Platform/Systems/DevRel Engineers | Full-time | San Francisco/Prague (in-person only) | $180k - $350k + equity | https://e2b.dev

Hi, I'm Vasek. CEO of E2B (https://e2b.dev). We're building an open-source infra that gives AI agents cloud computers.

We have customers like Perplexity, Mistral, Hugging Face, Rabbit, Manus, and a lot of new exciting startups building in the AI space. We have revenue, are growing double digits MoM, and raised over $11M. We're hiring engineers all over the board to work on our infrastructure, SDKs, AI projects, and user dashboard.

We're a team of 13, the core team is immigrants from Europe that moved to San Francisco. We work from our office in SF and in newly opened office in Prague. Both are in-person. Two technical co-founders that have known each other for 15 years.

We're looking for several roles. You can check out details at e2b.dev/careers

If this sounds interesting to you, shoot me an email at vasek at e2b.dev. We've found some great people on HN before so looking forward to hearing from you!

Re:Ask HN: Who is hiring? (March 2025) on Monday March 03, 2025 @03:16PM (#43246163)
E2B | Distributed Systems/AI/DevRel Engineers | Full-time | San Francisco/Prague (in-person only) | $100k - $300k + equity (0.1% - 0.3%) | https://e2b.dev

Hi, I'm Vasek. CEO of E2B (https://e2b.dev). We're building an open-source infrastructure for AI code interpreting/code execution in our Sandboxes.

We have customers like Perplexity, Vercel, Hugging Face, You.com, and a lot of new exciting startups building in AI space. We have revenue, are growing, and raised over $11M. We're hiring engineers all over the board to work on our infrastructure, SDKs, AI projects, and user dashboard.

We're a team of 15, the core team is immigrants from Europe that moved to San Francisco. We work from our office in SF and in newly opened office in Prague. Both are in-person. Two technical co-founders that have known each other for 15 years.

We're looking for:

- Distributed systems engineer to work on our infrastructure that's powered by Firecracker and Nomad.

- AI engineer to help us build more opinionated AI codegen tools on top of our sandboxes (think our version of Next.js)

- DevRel engineer to help us inspire more developers by creating mini projects, examples, integrations, and help us with our Discord community.

If this sounds interesting to you, shoot me an email at vasek at e2b.dev. We've found some great people on HN before so looking forward to hearing from you!

Re:Ask HN: Who is hiring? (February 2025) on Monday February 03, 2025 @11:47AM (#42920129)
E2B | Distributed Systems/Systems/AI Engineers | Full-time | San Francisco (in-person only) | $150k - $400k + equity (0.1% - 1%) | https://e2b.dev

Hi, I'm Vasek. CEO of E2B (https://e2b.dev). We're building an open-source infrastructure for AI code interpreting in our Sandboxes.

We have customers like Perplexity, Vercel, have revenue, growing, and raised over $11M. We're hiring engineers all over the board to work on our infrastructure, SDKs, AI projects, and user dashboard.

We're a team of 9, the core team is immigrants from Europe that moved to San Francisco. We work from our office in SF and in Prague. Both are in-person. Two technical co-founders that have known each other for 15 years.

If this sounds interesting to you, shoot me an email at vasek at e2b.dev. We've found some great people on HN before so looking forward to hearing from you!

Show HN: Open Computer Use

https://github.com/e2b-dev/open-computer-use

Hi everyone, I'm Vasek (https://x.com/mlejva), the CEO of the company behind this - https://e2b.dev. The company is called E2B. We're an open-source (https://github.com/e2b-dev) devtool that makes it easy to run untrusted AI-generated code in our secure sandboxes. You can think of us as coding runtime for LLMs. You can self host us on GCP...

( Read More... | 1 comment | 8 points | on HN )
Re:Ask HN: Who is hiring? (January 2025) on Friday January 03, 2025 @12:26PM (#42587571)
E2B | Distributed Systems/Systems/AI/Product Engineers | Full-time | San Francisco (in-person) | $150k - $400k + equity (0.1% - 1%) | https://e2b.dev

Hi, I'm Vasek. CEO of E2B (https://e2b.dev). We're building an open-source infrastructure for AI code interpreting in our Sandboxes.

We have customers like Perplexity, have revenue, growing, and raised over $11M.W e're hiring engineers all over the board to work on our infrastructure, SDKs, AI projects, and user dashboard.

We're a team of 9, the core team is immigrants from Europe that moved to San Francisco. We work from our office in SF. Two technical co-founders that have known each other for 15 years.

If this sounds interesting to you, shoot me an email at vasek at e2b.dev.

We also offer a $10k referral bonus for the distributed systems engineer if we hire the person.

Re:Ask HN: Who is hiring? (December 2024) on Monday December 02, 2024 @03:35PM (#42300125)
E2B | Distributed Systems/Systems/Product Engineers | Full-time | San Francisco (in-person) | $150k - $250k + equity (0.1% - 1%) | https://e2b.dev

Hi, I'm Vasek. CEO of E2B (https://e2b.dev). We're building an open-source infrastructure for AI code interpreting in our Sandboxes.

We have customers like Perplexity or PGA. We recently closed a $11M round, growing double digits every month (started over 10M of our sandboxes, almost half of that just last month), and are hiring engineers all over the board to build on our infrastructure, SDKs, and user dashboard.

We're a team of 7, the core team is immigrants from Europe that moved to San Francisco. We work from our office in SF. Two technical co-founders that have known each other for 15 years, 3 engineers, 1 devrel, and 1 operations. Check out our careers page to learn more - https://e2b.dev/careers.

If this sounds interesting to you, shoot me an email at vasek at e2b.dev.

We also offer a $10k referral bonus for the distributed systems engineer if we hire the person.

Re:Ask HN: Who is hiring? (November 2024) on Friday November 01, 2024 @04:24PM (#42021195)
E2B | Distributed Systems, Designer/Frontend, Product, and AI Engineers | Full-time |San Francisco (in-person) | $150k - $250k + equity (0.1% - 1%) | https://e2b.dev

Hi, I'm Vasek [0]. CEO of E2B. We're building an open-source [1] infrastructure for code interpreting in our Sandboxes.

We have customers like Perplexity [2] or PGA. We just closed a $11M round [3], growing double digits every month (started 10M of our sandboxes, almost half of that just last month), and are hiring engineers all over the board to build on our infrastructure, SDKs, and user dashboard.

We're a team of 7, the core team is immigrants from Europe that moved to San Francisco. We work from our office in SF. Two technical co-founders that have known each other for 15 years, 3 engineers, 1 devrel, and 1 operations. Check out our careers page to learn more - https://e2b.dev/careers.

If this sounds interesting to you, shoot me an email at vasek at e2b.dev.

[0] https://x.com/mlejva

[0] https://www.linkedin.com/in/mlejva/

[1] https://e2b.dev/blog/how-perplexity-implemented-advanced-dat...

[2] http://github.com/e2b-dev

[3] https://x.com/mlejva/status/1846568274009698402

[3] https://www.linkedin.com/posts/mlejva_today-im-excited-to-la...

Shameless plug here. We're building exactly this at E2B [0] (I'm the CEO). Sandboxed cloud environments for running AI-generated code. We're fully open-source [1] as well.

[0] https://e2b.dev

[1] https://github.com/e2b-dev

Re:Show HN: Desktop Sandbox for Secure Cloud Computer Use on Thursday October 24, 2024 @04:07PM (#41939207)
Hello, I'm the CEO of the company that built this - E2B [0]. We're building infrastructure for AI code interpreting. Companies like Perplexity are using us.

We're using Firecrackers [1] to power our sandboxes. Funnily enough, we had this repo sitting on our GitHub for about 6 months. We originally made this for one of our customers because they were running evals on the desktop-like environment with GUI for their model.

You can use PyAutoGUI [2] to control the whole environment programmatically.

The desktop-like environment is based on Linux and Xfce [3] at the moment. We chose Xfce because it's a fast and lightweight environment that's also popular and actively supported. However, this Sandbox template is fully customizable and you can create your own desktop environment.

Let me know if you have any questions.

Btw, we're hiring [4]!

[0] https://e2b.dev

[1] https://github.com/firecracker-microvm/firecracker

[2] https://pyautogui.readthedocs.io/

[3] https://www.xfce.org/

[4] https://e2b.dev/careers

Re:Ask HN: Who is hiring? (September 2024) on Tuesday September 03, 2024 @04:11PM (#41438709)
We move faster and genuinely like working in person together
Re:Ask HN: Who is hiring? (September 2024) on Monday September 02, 2024 @06:10PM (#41429190)
E2B | Systems Engineer & Design Engineer | Full-time | San Francisco (in-person) | $150k - $220k + equity (0.1% - 1%)

Hi, I'm Vasek [0]. CEO of E2B. We're building an open-source [1] cloud runtime for AI agents.

We've been focused on making it easy to run AI-generated code in the cloud securely in our sandboxes (code interpreting). Users have started over 2.5M of our sandboxes (>1.3M last month). Have been growing 30%-60% MoM. We're a team of 6. Two technical co-founders. Have revenue from seed to enterprise companies. Our customers are companies like Perplexity, LandingAI, Intenseye, or Open Interpreter.

We're from all around the world but moving everyone to SF to our office to work in-person. We like people from non-traditional backgrounds.

What will you work on?

- Systems engineer: micro VMs (Firecracker, Cloud Hypervisor), virtualization, Rust, Golang, Terraform

- Design engineer: ownership of docs, user dashboard, smooth onboarding, Nextjs, JS/TS

Interested? Send a quick hi to my email - vasek at e2b.dev

[0] https://x.com/mlejva

[1] http://github.com/e2b-dev

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