Ask HN: Who is hiring? (September 2025)

Stream | Multiple Positions | Amsterdam (NL), Skopje (Macedonia) | Boulder, CO (US) | Toronto (Canada)) | Remote possible | Full Time | Visa Sponsorship

We are consistently hiring backend engineers ranging from Senior level to Staff / Lead / Director / Principal Go engineers.

If you have experience with a different tech stack, we offer a 10-week onboarding program to train you in Go, scaling and other key topics: https://tinyurl.com/2u5x9f9w

We’re also hiring for:

* Staff Python Engineer – Open Source Video/Voice AI Library

* Senior React Native SDK Engineer

* Staff Product Designer

* WebRTC SFU Engineer

* Director of Information Security

At Stream, we use Go for our video SFU, chat API, Moderation and Feeds, serving high traffic from major apps like Strava, Nextdoor, Patreon, and Midjourney. Our tech stack: Go, CockroachDB, RocksDB, WebRTC, Raft, and Redis.

Why Join Stream?

* High scale/ difficult engineering, we have customers using our products with millions of users

* Default alive. Startup growth opportunity with healthy revenue

* All managers are hands-on and capable engineers

* Edge network of servers around the world

* Great opportunity to learn and grow

Remote: our roles are primarily NL, US, or CA-based (hybrid), but exemptions for remote work within the EU may apply to specific cases.

Visa Sponsorship: Available for the Netherlands

Apply here: https://jobs.ashbyhq.com/stream?utm_source=5rrpvObp3r

Phrasing | https://phrasing.app | EU Remote | Co-founder

Phrasing is the best way to learn and maintain multiple languages [1]. With support for over 120 languages, science-based methodologies, and a beautiful custom built UI, Phrasing make’s it easier than ever to learn a language… or 10.

Phrasing is built with Elixir on the backend (lots of Broadway, FLAME, Nx and Scholar) with a ClojureScript front end. Everything is stored in a single Postgres database hosted with neon. I’m moving some code to a commons library, with the end goal of using Clojure as an isomorphic solution to run the same code on web, server, and mobile (Phrasing is my attempt to do something different [2], from both a product and a business perspective. No investments, no hyper scaling, no growth hacking — just tripling down on building the most effective application to learn a language.

Phrasing is launched, live, has some DAUs and MRR. However, long ago I’ve reached the limit of what one developer can do. I’m looking for someone to

  - come on board and take over the entire Elixir codebase
  - watch the Broadway Pipelines, and not sleep if there are any failing checkpoints 
  - optimize request times, reduce database pressure, and speed up extraction times
  - work with me to restructure things to reduce costs/complexity
  - work towards training novel embedding spaces, custom classic ML/NLP models, and long term algorithmic improvements to the SRS [3]
  - see this as a fun challenge, and have enough ownership of the product that I can focus on some user facing developments [4]

Please note, I’m not looking to hire an engineer to work a 9-5, and I am in no hurry to hire someone soon. I’m looking for a co-founder to come on board, take ownership and accelerate the product. The product is built, working, and growing organically. While there is some MRR, the position will be rev-share & equity focused until the business produces enough for full salaries.

To apply, please send an introduction hn at phrasing dot app. I will not be interviewing until the 12th of September, and no priority will be given to earlier or later applicants, so there is no rush. A sincere, well-written introduction is your best way to get an interview. No experience is required for this role, so long as you’re competent and hungry.

[1] https://phrasing.app/blog/multiple-languages [2] https://phrasing.app/blog/mission [3] https://phrasing.app/blog/humane-srs [4] https://phrasing.app/blog/a-dream-of-three-vector-spaces [5] https://x.com/barrelltech [6] https://reddit.com/u/phrasingapp

iGent AI | Senior/Staff Engineers | London, UK (Hybrid, 3 days/week) | Full-time | https://igent.ai

Hi! Co-founder of iGent AI here. We build agentic systems for large-scale, industrial projects, and an agentic cloud.

Proof: our agent built a Redis-compatible database in Rust, with no human coding, in 70 man-hours – see https://www.igent.ai/insights/production-database-server

Why join:

* Small, senior team: ex-DeepMind, OpenAI, Microsoft Research, Amazon, and Cambridge University

* Hard problems across distributed systems, OS/sandboxing, ML and LLM inference/post‑training. Real users; ship to prod.

* Big Tech salary + options.

Open roles (all Senior/Staff; hands-on):

  • Full-Stack - design and build the new agentic interface, with top designer

  • Agent Infrastructure - branching sandboxes, filesystems, orchestration, observability

  • Backend / Eng Lead - build cloud from first principles; distribution, sync, load-balancing, events

  • LLM inference & post-training - long context tech, RL, vLLM, performance

  • Devrel & GTM – live-developing, tutorials, OSS/community, hackathons - drive adoption

You might be a fit if you have:

- 5+ years building and operating production systems (or exceptional evidence).

- Own 0→1 projects; comfortable reading & generating lots of code.

- Public work (OSS/papers/blogs/products) or strong portfolio.

Apply! https://www.igent.ai/join-us

EAGL | Ghent, Belgium | Onsite | Full-Time

EAGL is a fintech startup that unifies controlling and accounting with AI-powered agents that automate close processes, flag anomalies, and clean P&L so finance teams can focus on strategy, not spreadsheets.

https://www.geteagl.com info@geteagl.com

We're looking for full-stack (Frontend, Backend, AI) profiles that want to dive into the fintech world. Node, react, postgres, ...

Hi do you offer H1B transfers in the US?