Ask HN: Who is hiring? (December 2025)

Our mission is to make authentication and authorization simple and secure for every developer building web and mobile applications. We want devs to stop worrying about auth and focus on building something awesome. We also just acquired a fine-grained authorization company ( https://fusionauth.io/blog/fusionauth-acquires-permify ) and are going to be building in that area as well.

There are a lot of companies in the auth space, but we feel like we have something special:

* a unique deployment model (self-host on-prem or in your cloud or run in our cloud)

* A well designed API first approach; one customer compared our app to petrichor

* a mature product (the code base is nine+ years old and we've found and fixed a lot of the sharp edges around core login use cases; there are plenty more features to add)

* the CTO is the founder and still writes code

* a full featured free-as-in-beer version which makes the sales cycle easier; prospects often come in having prototyped an integration already

Our core software is commercial with a "free as in beer" version. We also open source much of our supporting infrastructure. Technologies and standards that you will work with: Modern Java, MySQL, PostgreSQL, Docker, Kubernetes, OAuth, SAML, OIDC.

Learn more, including about benefits and salaries, and apply here: https://fusionauth.io/careers/ ( Click/tap the 'View open positions' orange button. )

The Upside & Opportunity: Join the founding team building Cofounder, the autonomous agent platform designed to run entire business workflows (Slack, Notion, GitHub, etc.) end-to-end. We are building the operating system for one-person, billion-dollar companies. High ownership, zero bureaucracy, and maximum impact.

About The General Intelligence Company Founded in 2024, our mission is to automate business tasks. We are focused on solving the hard problem of reliable, end-to-end agent execution, turning complex LLM capabilities into dependable, real-world workflows.

You'll own the end-to-end agent experience, building and scaling Flows and Integrations. You will ship across the stack: React/Next.js (TypeScript) for novel humanagent UX and Python FastAPI on the backend, focusing on performance and reliability. We need someone who can make powerful agent systems feel simple and reliable for users.

Stack: React/Next.js (TypeScript), Python FastAPI, Background Workers, Postgres.

If you're interested please submit an application here: https://generalintelligencecompany.cookd.dev/jobs/senior-pro...

We're also hiring an applied AI engineer! https://generalintelligencecompany.cookd.dev/jobs/applied-ai...

We're building Cursor for doctors. At Vibrant, we've picked the expensive, high-touch, data-heavy subspecialties of functional, integrative, and longevity medicine, and we've created AI agents that reduce hours of clinical work to minutes.

We're a world-class team of health tech founders, AI builders, and clinicians from Meta, Stride Health, Peloton, and Hinge Health. In just five months, we've built notetaking/scribing, Clinical Decision Support, and some of the integrations a clinician needs to run their practice with Vibrant as their AI Operating System.

In the words of doctors using our product already in production: "I have goosebumps, this is really incredible. Very accurate." "Seeing the patient overview AI-generated summary come to life after placing a couple notes is AMAZING. I'm losing it over here."

Our stack: Typescript, React, NextJS, React Native, Expo, AI SDK, custom AI agents, RAG, tools, and agentic workflows.

It's still early days for us, and we're looking for folks who ship fast and are curious and resourceful. If that's you, shoot me an email at pedro [at] vibrantpractice.com or just book an intro with me: https://book.vimcal.com/p/pedro/quick-chat

Join as the 4th team member to redefine the most universal interface in business: the spreadsheet. We are building an AI spreadsheet that automates knowledge work, allowing users to describe tasks in plain English and get immediate, trustworthy results. We launched a few months ago, already have paying customers, and are backed by top investors like Base10 (Brex, Figma). This is a massive opportunity to take the interface for this market shift.

Compensation & Equity: $150,000 - $200,000 + meaningful early-stage ownership

We're building the tool that saves users hours of manual work (data cleaning, formula building) currently required by legacy spreadsheets. Our team includes engineers who shipped production AI and distributed systems at Microsoft and VMware. We intend to replace Excel and Google Sheets by building the spreadsheet that truly understands what users want.

Why We’re Hiring a Founding Engineer You will own the core product end-to-end, building AI agents that reason over data and evolving our spreadsheet engine for correctness and scale. You'll ship critical UX that allows non-technical teams to get analysis in plain English. We need a generalist who moves fast across the full stack: Node.js, TypeScript, Express, and Rust + WASM. High agency, high ownership, and a focus on user trust are essential.

Stack: Node.js, TypeScript, Express, Rust + WASM, AI Agents, Data Reasoning.

If you're interested please apply at https://trufflepig.cookd.dev/jobs/founding-engineer

DL is the maker of Godel Terminal, a browser-based financial research platform that provides users with data and analytics on global markets. We just raised a $5 million seed round and are looking to scale up our engineering team. Please see the roles below and contact us if you feel you are qualified and interested in the work we are doing!

https://godelterminal.com/careers-senior-full-stack-engineer

https://godelterminal.com/careers-frontend-engineer

https://godelterminal.com/careers-backend-engineer