Fullstack Engineer

onyx· Engineering
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📍 San FranciscoFullTime💰 USD 150K–400K/yr

About this role

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 The project has over 13K stars and over 3K community members across Slack and Discord (these stats may already be out of date when you read this).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.

Frequently Asked Questions

What is the salary for the Fullstack Engineer role at onyx?
The listed salary for this Fullstack Engineer position at onyx is USD 150K–400K/yr. This is an FullTime role.
Where is the Fullstack Engineer position at onyx located?
This Fullstack Engineer role at onyx is based in San Francisco. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Fullstack Engineer role at onyx full-time or part-time?
This is listed as a FullTime position. It is posted as a Fullstack Engineer role in the Engineering department at onyx.
Which team or department does the Fullstack Engineer at onyx belong to?
This Fullstack Engineer position is part of the Engineering department at onyx. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Fullstack Engineer position at onyx?
Click the "Apply Now" button on this page. You will be redirected to onyx's official application portal hosted on ashby where you can submit your application directly.
When was the Fullstack Engineer job at onyx posted?
This Fullstack Engineer position at onyx was posted on Apr 21, 2025. Apply as soon as possible — early applications are often reviewed first.
Fullstack Engineer
onyx · 💰 USD 150K–400K/yr
Apply for this role ↗

You'll be redirected to onyx's official application page on Ashby ATS.