Join a high-caliber founding team of ex-SpaceX and Warp engineers to architect a scientific intelligence platform. You will build systems that ingest and reason across multimodal R&D data—spreadsheets, technical documents, and lab notebooks—to accelerate breakthroughs in semiconductors and aerospace. This is a rare opportunity to define the technical foundations of a category-defining AI company.
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Software Engineer at Altara
We are looking for a founding-level Software Engineer to join a elite ~10-person team in San Francisco. Backed by Greylock and AI luminaries like Jeff Dean, this startup is building the scientific intelligence platform to accelerate breakthroughs in batteries, semiconductors, and aerospace. You'll work alongside ex-SpaceX and Warp engineers to architect systems that extract structure from trillions of dollars worth of R&D data. If you have shipped 0-to-1 products and want to build the AI layer for the physical world, this is a once-in-a-generation opportunity to shape a category-defining company from the ground floor.
Overview
Role overview
Company
Altara
Greylock-backed seed startup building the AI intelligence layer for physical sciences
Responsibilities
What you will do
- Architect and build the early foundations of the core product and data ingestion infrastructure from scratch.
- Develop LLM-based agentic systems and custom AI implementations to extract insights from messy, multimodal scientific data.
- Ship end-to-end features as a technical leader, influencing the long-term engineering culture and product vision.
Candidate profile
Who this is a fit for
- Proven track record of shipping 0-to-1 products in fast-paced environments like early-stage startups or applied AI labs.
- Deep technical experience building production-grade LLM applications, agentic workflows, or complex ML infrastructure.
- Product-first mindset with a bias toward action and the ability to work in-person 5 days a week in San Francisco.
What makes it remarkable
Why this role is remarkable
- Work at the intersection of AI and physical science alongside a world-class team from SpaceX, Warp, and Jane Street.
- Backed by elite investors including Greylock, Neo, BoxGroup, and angels like Jeff Dean and leadership from OpenAI and AMD.
- Massive impact potential by replacing outdated legacy software with an intelligence layer for industries representing trillions in R&D spend.
Jack & Jill
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Meet Jack
Jack gets to know what you're great at and what you want next, then searches 14 million jobs daily and introduces you directly to hiring managers.
How does this work?
Jack's an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack's network.
If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.