Software Engineer - Platform/Applied AI (Fullstack)

San Francisco, United StatesOn-site

Responsibilities

RESPONSIBILITIES - Build and scale complex data capturing workflows across web (Next.js) and desktop (Python) - Architect and optimize data pipelines that

We serve every frontier AI lab with the mission of delivering the best data to power the best models.
This is a rare opportunity to join a company at a defining moment in AI.
We're based in San Francisco and backed by leading investors including Altos Ventures, BoxGroup, and Y Combinator and angels from Google DeepMind, OpenAI, Anthropic, Meta Superintelligence Labs, and Microsoft AI and are based in San Francisco.
experience from Citadel Securities, Meta, Google, Silver Lake, and Morgan Stanley – get to work with the best :)
QUALIFICATIONS - Proficiency in JavaScript (Next.js) and Python, with demonstrated
experience building full-stack web applications -
Experience with serverless architecture and cloud functions for implementing heavy data processing (GCP/AWS) - Storage, caching & search: Hands‑on with Redis (caching), Elasticsearch (indexing), and message queues (Kafka/RabbitMQ) to build scalable, low‑latency pipelines. - Any background in AI research, LLM evaluation, or human‑in‑the‑loop systems -
Experience getting your ideas into production (founder

Since raising our $30M Series A at a $300M valuation, AfterQuery has grown well over a $100M revenue run rate.
WHY APPLY - Massive Opportunity: We were one of the fastest growing YC companies in our batch, and we believe we can be one of the fastest growing YC companies of all time - Founding role—you’ll define and own our data infrastructure from day one. - Equity & Growth – Competitive salary + equity.
experience preferred) COMPENSATION - $180-220K base + dataset commission bonus (4% Gross Profits; $100k-400k w/ no cap) + equity (200-300K vested over 4 years) - Comprehensive
benefits (UberEats and ride share stipend, comped Equinox, 401K with match, health, dental, and vision insurance)