Software Engineering Intern
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At a glance
Job overview
AfterQuery is hiring a Software Engineering Intern. The intern will work with the core engineering team, be critical in creating data infrastructure that shapes future frontier model development, and own entire projects end‑to‑end, gaining significant responsibility and seeing impact instantly.
Key focus areas include Build and scale complex data capturing workflows across web (Next.js) and desktop (Python), Architect and optimize data pipelines that experience high throughput with heavy loads, and Collaborate with the founding team to define product strategy and ship features fast.
Successful candidates bring Able To Take Gap Semester Off And Join In Person In San Francisco. Important skills include Next.js, Python, JavaScript, GCP, AWS, and Redis. Preferred (not required): Data Capturing Workflows, Define Product Strategy, Ship Features Fast, and Set Engineering Best Practices.
Skills & qualifications
Skills
Qualifications
Full job description
ABOUT AFTERQUERY
AfterQuery https://www.afterquery.com/ is an applied research lab curating data solutions for foundation model development.
We serve every frontier AI lab with the mission of delivering the best data to power the best models. In doing so, we can make expertise that once took a lifetime to build available to anyone who needs it. Our customers are the ones building the foundation models themselves and our work sits directly in the loop of how those systems improve.
This is a rare opportunity to join a company at a defining moment in AI. Since raising our $30M Series A at a $300M valuation, AfterQuery has grown well over a $100M revenue run rate.
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.
WHY APPLY
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Massive Opportunity: We are one of the fastest-growing YC companies in our batch, and we believe we can become one of the fastest-growing YC companies of all time.
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Founding Impact: You will own and architect core infrastructure systems that power our platform from the ground up.
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Equity & Growth: Competitive salary and meaningful equity. As we scale, you’ll have the opportunity to shape the engineering organization and lead major technical initiatives.
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Strong Team: Our founding team has experience from Citadel Securities, Meta, Google, Silver Lake, and Morgan Stanley — work alongside world-class engineers and researchers.
OVERVIEW
Working with our core engineering team, you’ll be critical in creating data infrastructure that will be shaping the future development of frontier models. You will get a lot of responsibility, owning entire projects end-to-end – meaning you can see your impact instantly.
RESPONSIBILITIES
Build and scale complex data capturing workflows across web (Next.js) and desktop (Python)
Architect and optimize data pipelines that experience high throughput, with heavy loads
Collaborate with the founding team to define product strategy and ship features fast.
Set engineering best practices and lay the groundwork for future team growth.
REQUIRED QUALIFICATIONS
Able to take a gap semester off and join our team in person in San Francisco
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
PREFERRED QUALIFICATIONS
Experience getting your ideas into production (founder experience preferred)
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