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vrn21

Re:Ask HN: Who wants to be hired? (September 2026) on Tuesday September 08, 2026 @01:45AM (#49605927)

  Location: Kerala, India, Open to working at any TZ
  Remote: Yes
  Willing to relocate: Yes
  Technologies:  Rust, TypeScript, JavaScript, Python, Go, C, Java, Swift, Solidity, React, Next.js, Node.js, FastAPI, Django, Actix Web, Axum, PostgreSQL, SQLite, MongoDB, Redis, Docker, Kubernetes, Terraform, AWS, GCP, Cloudflare Workers, WebAssembly, gRPC, LangChain, OpenAI, Anthropic, Tailwind CSS, Vite, GitHub Actions, Playwright, Pytest
  Résumé/CV: https://www.vrn21.com/resume
  Email: [email protected]
I'm KV a recent grad, previously worked at tryarcanist.com, verita-ai.com, hud.ai (YC W22), mecha.so and fileago.com. At my tryarcnist.com , I've been a sort of a founding product engineer, merged 350PRs in like 2 months. Built Verification components of a background coding agent. Even before that, I've built RL envs and evals for Code and CUA envs at hud and Verita AI; and a lot of systems and linux engineering at mecha.so and fileago.com

Built https://github.com/vrn21/bouvet a sandbox for agents with rust and firecracker; https://github.com/Hrefto/shorterdb KV store in rust; https://github.com/vrn21/pdb postgres extension that brought full text search natively; https://github.com/orbit-serverless/server serverless faas platform with wasm and Rust

Re:Ask HN: Who wants to be hired? (August 2026) on Friday August 07, 2026 @11:28AM (#49211986)

  Location: Kerala, India
  Remote: Yes
  Willing to relocate: Yes
  Technologies: Rust, Go, Python, TypeScript
  Résumé/CV: https://www.vrn21.com/resume
  Email: [email protected]
Hi I'm KV, previously worked at 5 startups, recent one being at a NYC-based startup, where i've been building background agents + Validation of Agent code.

Interested in developer tools, AI Infra, Backend and Systems. See more projects at here: https://github.com/vrn21

Re:Ask HN: Who wants to be hired? (May 2026) on Friday May 01, 2026 @12:51PM (#47977015)

  Location: India
  Remote: Yes
  Willing to relocate: Yes
  Technologies: Rust, Python, Docker, Linux, Terraform, K8s, Sandboxes
  Résumé/CV: vrn21.com/resume
  Email: [email protected]
I'm KV, an upcoming grad, previously built rl envs + infra at verita-ai.com, hud.ai (YC W25), mecha.so and fileago.com

And built some projects like: sandbox for agents with firecracker and rust [ https://github.com/vrn21/bouvet ] ; a key value store in rust[ https://github.com/hrefto/shorterdb ]; a serverless FaaS platform with WASM and rust [ https://github.com/orbit-serverless/server ]; a postgres extension with pgrx for full text search using tantivy, bm25, rust [ https://github.com/vrn21/pdb ]

Re:Ask HN: Who wants to be hired? (April 2026) on Tuesday April 14, 2026 @04:54PM (#47771383)

  Location: India
  Remote: Yes
  Willing to relocate: Yes
  Technologies: Rust, Python, Docker, Linux, Terraform, K8s, Sandboxes
  Résumé/CV: vrn21.com/resume
  Email: [email protected]
I'm KV, previously built rl envs + infra at verita-ai.com, hud.ai (YC W25), mecha.so and fileago.com

And built some projects like: sandbox for agents with firecracker and rust [ https://github.com/vrn21/bouvet ] ; a key value store in rust[ https://github.com/hrefto/shorterdb ]; a serverless FaaS platform with WASM and rust [ https://github.com/orbit-serverless/server ]; a postgres extension with pgrx for full text search using tantivy, bm25, rust [ https://github.com/vrn21/pdb ]

Re:Show HN: How to train and run models with RL Envs on Saturday March 07, 2026 @10:12AM (#47288349)
the link is over here, somehow link changed on its own : https://vrn21.com/blog/rl-env
Re:Ask HN: Who wants to be hired? (March 2026) on Tuesday March 03, 2026 @04:27AM (#47230165)

  Location: India
  Remote: Yes
  Willing to relocate: Yes
  Technologies: Rust, Python, Docker, Linux, Terraform, K8s, Sandboxes
  Résumé/CV: vrn21.com/resume
  Email: [email protected]
I'm KV, upcoming grad, previously interned at 3 startups [1x YC], where most of my work has revolved around Systems [Rust, Python, Docker, Linux]; You could see more info at my resume: [vrn21.com/resume]

And I've built some projects like: sandbox for agents with firecracker and rust [ https://github.com/vrn21/bouvet ] ; a key value store in rust[ https://github.com/hrefto/shorterdb ]; a serverless FaaS platform with WASM and rust [ https://github.com/orbit-serverless/server ]; a postgres extension with pgrx for full text search using tantivy, bm25, rust [ https://github.com/vrn21/pdb ]

from a utilitarian perspective, can we swap this instead of a e2b or some other provider? since this doesnt require n number of micrvovm kernals and rootfs hanging round?
so user gets all of the dependencies and apps in userspace to run as well? but each of the command runs in its own more secure shell of some sorts?
no on noticing it?

Show HN: I built a macOS app that toggles between extended/mirrord monitor setup

https://github.com/vrn21/monitor-toggle

When my external power connection to Monitor stops (due to some outage) Mac still extends it display. So I'd either need to unplug my hdmi or go change it to mirror from settings (which takes too much time tbh) to resume my work.With this app I just hit Switch to Internal Only, keep working on my MacBook screen, and later click Restore Extended when everything is working again.

( Read More... | 1 comment | 2 points | on HN )
Re:Ask HN: Who wants to be hired? (February 2026) on Wednesday February 11, 2026 @08:35AM (#46974766)
Location: India Remote: Yes Willing to relocate: Yes to anywhere (if provided with VISA) Technologies: Rust, Python, Docker, Terraform, Linux, Infra/Systems/Backend Résumé/CV: vrn21.com/resume Email: hello [at] vrn21 [dot] com

upcoming grad with 3 prior internships [1x yc]: rl envs, linux, filesystems. recently built a sandbox for agents with rust and firecracker as well btw: github.com/vrn21/bouvet

link not found btw
Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @04:16PM (#46801633)
lol thanks for the compliments, generated both the testimonials after giving the mcp server to both opus and gemini and asked their feedback on it.

it is supposed to be directly used by agents, so they are kind of my end users, hence it made sense to get their testimonials :)

Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @04:13PM (#46801601)
my ideal scenario is a cloud web model getting access to a sandbox to run commands and read/write to files. but yeah it could be used as an alternative to bash and read write tools.

I did not get your second question exactly, but yeah microvms can be considered one of the secure ways to run your agent

Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @04:07PM (#46801527)
every syscall on containers run on the kernal with full privelages, so if needed one can break out of the container and get access to the host
Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @04:00PM (#46801434)
Luis wrote an excellent blog about it btw: https://www.luiscardoso.dev/blog/sandboxes-for-ai
Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @03:58PM (#46801405)
yes this is pretty busy market, but it is just pure infra/OS problem and many of it has already been solved in the past decades, right now its just who can fit everything together fastest
Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @03:56PM (#46801370)
Thanks for the compliments! I can't really say that it has a unique differentiator between all the other sandboxes out in the market, this was supposed to be a poc version on how i could be building a sandbox for agents, this had been haunting me since a few months, tried out what could happen!

the actual sandboxes in the market are doing a lot of work in optimizing the system end to end, and most of it is pretty hard. this project just scratches the surface

Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @03:29PM (#46801082)
hi, you could find my socials at https://vrn21.com, feel free to dm :)
Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @03:28PM (#46801065)
using sandboxes makes a lot of sense now a days, but this is nowhere near the prod sandboxes the market has, they have a lot of work and optimizations going on! but yeah its little fun side project! thanks for the compliments :)
Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @03:24PM (#46801028)
tbh, this is kind of a gray area, i should have thought little bit more on how it should have been architectured,

for me this was the ideal scenario: a cloud model on web with its own sandbox (something like claude with read/write to files and run commands)

i dont really think this could be considered as a fox guarding the hen house, its not that ai wants to infect your computer with its commands, if ai is provided the mcp server, it will it instead of using the tools like bash in most cases [if in a local setup]. I feel its more of a lumberjack guarding his weapons.

Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @03:13PM (#46800908)
yes, it is supposed to be hosted on bare metal linux machines; anyone on any machine can use it as a sandbox after adding the mcp server to the client
Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @03:11PM (#46800888)
i think https://github.com/trycua/cua has some sort of it working
Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @03:10PM (#46800883)
Sorry about the link, here's the og link: https://github.com/vrn21/bouvet/
Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @03:09PM (#46800858)
When I started to design the system, I thought of creating a way for an agent on the cloud to have access to a filesystem, such that they can read, write files and run commands. I can't really say that the startups in the space's main source of income is this, most of them rely on sdks for other platforms. I could adjust the core to work as a sdk as well, but right now the main interface is just a mcp server that a client can use
Re:Show HN: I Built a Sandbox for Agents on Wednesday January 28, 2026 @03:04PM (#46800817)
Sorry for the issue with the link, the accurate link is: https://github.com/vrn21/bouvet
Answer to the qn: I’d start option trading full time :)

But I don’t really think jobs will eventually dry up, because with the advent of ai, the competent developer’s productivity increases exponentially, and teams can stay lean and build unicorn businesses, case for startups

But for corporates at the end of the day, their hiring won’t change ig, most of the layoffs are not directly related to ai at all, is what I feel. They will keep on hiring people for the sake of hiring tbh

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