Ideogram | ONSITE(NYC or Toronto)| Full-time | ML, Backend, Marketing roles For more details, take a look here: https://www.ideogram.ai/careers?utm_source=hacker-news

Ideogram is on a mission to make professional-quality design accessible to everyone. We’re building an AI-native application that helps creative individuals and teams produce high-quality content faster and at a lower cost. We are pushing the boundaries of what’s possible with AI, with a focus on creativity and a high standard for trust and safety. Our headquarters is in downtown Toronto, and we have a growing presence in NYC. Read our 3.0, Canvas and Character blog posts, and try our product at ideogram.ai to get a glimpse of what we're building.

Our founding team consists of world-renowned AI experts including Mohammad Norouzi, William Chan, and Chitwan Saharia. This team has previously led transformative AI projects at Google Brain, CMU, and the University of Toronto. Our fundamental work in generative media includes Imagen and Imagen Video: Google’s text-to-image and text-to-video systems.

Opsin Security | San Jose / SF Bay Area (Hybrid, 2–3 days on-site) | Full-time | https://opsinsecurity.com/careers Opsin helps enterprises secure and deploy Enterprise Search/AI systems (e.g. Microsoft Copilot, OpenAI Enterprise, Google Gemini) responsibly without exposing sensitive data. Venture-backed by Race Capital. You’ll work directly with the founders on a small (~10) person team shipping fast in a huge green-field space. We are hiring for:

- Senior AI Engineer – 5 + yrs backend + 2 + yrs ML/LLM; Python, SQL, AWS/GCP experience; comp + eq (https://www.opsinsecurity.com/jobs/senior-engineer-ai-engine...)

- Senior Full-Stack Engineer – 4–8 yrs shipping product; React/Next.js + API & DB design + Nest.js; TypeScript, Python a plus; comp + eq (https://www.opsinsecurity.com/jobs/senior-engineer-full-stac...)

- Staff Backend Engineer – 8 + yrs building scalable systems + 2 + yrs technical leadership; architect data-driven services for LLM security; comp + eq (https://www.opsinsecurity.com/jobs/staff-engineer-backend)

- Founding Account Executive – full-cycle sales to CISOs/CIOs; 5 + yrs enterprise SaaS; cybersecurity/Microsoft ecosystem a plus; ~50% travel; comp + eq (https://www.opsinsecurity.com/jobs/founding-account-executiv...)

Tech stack: Python, TypeScript (Nest.js), React (Next.js), Postgres, Azure, modern LLM tooling

How to apply: email your résumé + a short note to Email is hidden with subject “HN – [role]”, or apply on our careers page.

I’m Shay Nehmad, Founding Engineer at the company. Happy to answer questions at Email is hidden or on LinkedIn.

Sentry | San Francisco, CA | Full-time

Sentry helps devs catch & fix bugs — used by millions of devs worldwide. We’re growing the platform and product surface area and hiring aggressively across engineering:

Highlighted Open Roles (SF, CA):

- Senior Staff Engineer, Platform

- Staff Machine Learning Engineer, AI

- Engineering Manager, Analytics Platform

- Engineering Manager, Product Platform

- Senior Software Engineer, Developer Infrastructure

- Senior Software Engineer, Infrastructure

- Senior Software Engineer (iOS), SDK

- Senior Software Engineer, Issue Workflow

Apply here: https://sentry.io/careers/#openings

Polar Sky | Founding AI Lead | Bay Area/Seattle | Hybrid/Onsite | Full-time

We're a well-funded, pre-seed cybersecurity startup focused on data security. I'm looking for a founding AI lead with experience in fine-tuning LLMs (expertise around RL + reasoning models a big plus). This person would own the full AI stack from data to training to eval to test-time compute.

Who's a good fit:

* If you've always thought about starting a company, but for whatever reason (funding, life, idea), this is a great opportunity to be part of the founding team. We're 2 people right now.

* You enjoy understanding customer problems and their use cases, and then figuring out the best solution (sometimes technical, sometimes not) to their problems.

* You want to help figure out what a company looks like in this AI era.

* You enjoy teaching and sharing knowledge.

Questions, interest, just email Email is hidden.

LiveKit | Remote | Livekit.io | VoiceAI | webRTC | Real-time communications LiveKit is defining a new paradigm for now applications are built by providing the framework and network infrastructure for voice, video, and physical AI. Hiring: >Software Engineer, Agents Hosting [ALL LEVELS: Senior, Staff]: https://jobs.ashbyhq.com/livekit/f152aa9f-981c-4661-99d3-683... >> Software Engineer, Gateway [All Levels: Senior, Staff]: https://jobs.ashbyhq.com/livekit/494d4741-18ac-4fda-89e0-b07... >> Sales-Engineer (Pre-sales): https://jobs.ashbyhq.com/livekit/264ceda2-1de1-4ea2-912a-a4d...

What we are looking for: Builders!!!! >Passion for building something truly impactful >>Remote company, first principles, global presence!

Front (front.com) | Engineering Roles - Backend / Frontend / AI / Full-stack / Eng Manager | SF / Paris / Santiago / Argentina | Full-time

See roles here: https://jobs.ashbyhq.com/frontcareers?utm_source=md314dblx1

Hiya Is HIYAring an AI Engineer in Seattle!

https://www.hiya.com/company/careers?ashby_jid=5d361735-05a7...

AI Engineers are responsible for developing and integrating AI solutions into Hiya’s products, focusing on rapid iteration, prompt engineering, and practical application. You'll fine-tune and optimize foundation models, craft sophisticated multi-agent systems, and invent novel solutions to power the next generation of voice intelligence.

Hiring an Okta expert and software engineer to lead identity management and employee/device lifecycle management for Opendoor: https://www.opendoor.com/careers/open-positions/jobs?gh_jid=...

Onsite in San Francisco

I'm a construction worker turned programmer doing data analysis for a few PhDs at a start up company. Recently got into machine learning and have been really going hard on it. In total I've been doing Python for about a decade.

Any advice for someone like me? I like my current job, but want to know where to go from here. Thanks for any advice.

Upside (upside.tech)| Data Engineering, ML Engineering, Full Stack, Data Analyst | ONSITE in San Francisco | Full Time

We're hiring for experienced senior/staff equivalent engineers across the stack.

Our team is doing some very interesting work on automated structured knowledge graph assembly, looking for anyone with prior experience working with large scale semi/unstructured datasets, applied NLP&ML background, or otherwise just a strong builder who wants to join something early.

See roles here: https://jobs.ashbyhq.com/upside-tech

You can also email Email is hidden and include hn in the subject if you think you're the right fit to contribute but don't see a matching role listed.