hirly

Onyx

Fullstack Engineer

San Francisco

Apply through hirly

Upload your resume and get a version tailored to this job, plus a cover letter, in about thirty seconds — before you create an account.

Apply with hirly

hirly's read of this role

Role family
Engineering
Seniority
Mid level
Stated salary
$150,000 – $400,000 per year
Country
US
Work mode
On-site / unstated
First seen by hirly
28 Sept 2026

Derived automatically from the posting. Sign up to see how the role scores against your own resume.

the posting

About the role

💥 Your impact

Onyx is a popular open source project with hundreds of thousands of users. The project has over 13K stars and over 3K community members across Slack and Discord (these stats may already be out of date when you read this). You’ll have the opportunity to build in the open and your work may be used by millions of people in the future.

💡 About the role

As an early hire, you'll play a pivotal role in shaping the core product. Help us become the biggest “GenAI for work” application in the world. This is an in-person role based in San Francisco, CA.

You’ll be:

Building a consumer grade UI experience for the GenAI Chat, Enterprise Search, Agents, and Admin features

Extending the backend functionalities and APIs (see below)

Improving the flexibility and quality of the search pipeline, building a semantic understanding of customer organizations, extending the current permission/access controls, and expanding the knowledge curation features

Implementing the latest approaches in NLP research like LLM based Knowledge Graphs, StructRAG, Agent/Deep-Research, etc. to increase the range of questions the system can answer (AI / deep learning experience not required)

Own the entire development cycle of new features, from conception to production

Collaborate with the founders and team to shape and influence the direction of the product and contribute to the engineering strategy

🚀 You’ll be successful if you…

Have 1-5 years (or more) of software engineering experience building real-world applications

Know Typescript/React/NextJS, Python, Relational DBs (Postgres)

Enjoy working in a fast moving startup with low amounts of process

Have excellent communication skills, with a strong ability to collaborate with others (both teammates and external customers)

⭐ Bonus points

Experience with Docker/Kubernetes, cloud technologies (AWS, GCP, Azure), and on-prem/cloud deployments

Experience (or even just interest) in AI (NLP, Deep Learning, GenAI) and information retrieval

Previous founder or early engineer at seed/series-A startup

About the interview

Non-technical Phone Screen (30 mins)

Practical Coding Interview (45 mins)

Work Trial (2-3 days in person, fully covered + compensated)

About Onyx

Onyx is the open source GenAI platform connected to your company's docs, apps, and people . We ingest and sync from all sources of information (Google Drive, Slack, GitHub, Confluence, Salesforce, etc.) to provide a centralized place for users to ask about anything. Imagine your most knowledgeable co-workers, all-rolled into one, and available 24/7!

We believe that every modern team will be adopting knowledge enhanced GenAI within the next 5 years and it is our goal to bring this technology to all the teams of the world.

We raised a $10M seed coming out of YCombinator, backed by Khosla Ventures (early/seed backers of OpenAI, Doordash, GitLab, etc.) and First Round Capital (Notion, Square, Roblox, etc.). Our customers include some of the best teams in the world like Netflix, Ramp, Applied Intuition and dozens of others. We also have incredible open source users like Roku, Zendesk, L3Harris and more.

Original posting on Onyx's site ↗

Browse similar roles

Want this one?

Upload your resume and hirly rewrites it for this job and writes the cover letter — in about thirty seconds, before you sign up.

Tailor my resume for this job