Full-Stack GenAI Application Engineer (All Levels) (AI / LegalTech / SF)

Tl;dr — Join Callidus, the most advanced legal generative‑AI platform, as a hands‑on Full Stack Engineer. Work with state‑of‑the‑art AI, an experienced founder‑led team, and a fresh funding round. Competitive total comp. Hustle culture. San Francisco.

We are entering the golden era of AI. Over the next 5-10 years, breakthroughs will drive a completely new world. Callidus is on a mission to transform the $1T global legal market and we’re well on our way.

Callidus is the most advanced legal generative AI platform on the market today. We offer a uniquely powerful platform, enabling lawyers (as one example) to draft a full 30‑page legal brief in ~10 minutes—saving about a week of effort. We are an engineering‑led organization that empowers talent to build collaboratively toward our mission.

More than 1,000 paying lawyers rely on Callidus today, and ARR is growing >20% MoM, putting us in the top 1% of funded startups at this level. We’re ready to scale and are looking to triple the size of our team.

We work hard, ship fast, and win together. 

We want highly talented engineers that want to be hands-on. We don’t want a bunch of managers. You’ll be an individual contributor Software Engineer (everyone at Callidus is a doer). Expect to:

- Design, build, and maintain customer‑facing features end‑to‑end.

- Engineer reliable, scalable Gen‑AI workflows (hybrid RAG, agents, chains of thought, etc.).

- Collaborate daily with lawyers and product to ship measurable user value.

- Own projects like “ingest millions of PDFs and summarize the legally relevant findings for this case”.

- Uphold code quality, security, and performance through reviews and automated tests.

Hiring for all levels of seniority from mid-level engineer (Software Engineer II, at least 2 years of experience) to staff/principal (~8+ years of experience).

This role will report to the CTO.

- Cloud: Azure

- Backend: Python (FastAPI), Redis, Postgres

- Frontend: React / Next.js, Node

- AI: OpenAI, Anthropic, Gemini, Meta, Mistral (choosing best‑in‑class per task)