Senior Infrastructure Engineer, Applied AI
Performance bonus of up to $100K. Base is flexible for very strong background
What we're looking for:
We are seeking a Senior Software Engineer with 6-10 years of experience in building and maintaining core infrastructure for a rapidly growing tech company. You should be comfortable architecting and developing shared infrastructure, mentoring junior engineers, and have a track record of building scalable, reliable, and high-throughput systems. Bonus points if you have experience in the human-in-the-loop data space or at a high-growth startup.
What you'll do:
Design and build the core, shared infrastructure that powers all of AfterQuery's data generation platforms, human-in-the-loop systems, and evaluation pipelines.
Take ownership of our foundational systems to ensure they are scalable and reliable for future growth.
Work closely with our vertical-focused engineering teams to provide the platform and services they need to build quickly and effectively.
Architect and develop scalable distributed systems capable of processing large-scale datasets and high-throughput workloads.
Lead the charge on establishing engineering best practices for system design, deployment, and reliability.
Mentor the entire junior engineering team, fostering a collaborative and high-performance culture.
AfterQuery is helping push the frontier of LLMs and AI Agents through novel datasets and experimentation. We work on building the most complex infrastructure that powers frontier data creation for agentic and hard reasoning workflows. We work the leading AI labs and are becoming the go-to partner for data infrastructure for YC companies. We have a sharp hockey stick growth rate and are extremely talent-dense, with most of our founding team coming from top IB and quant firms.
Team size
85 employeesFounded
Website
www.afterquery.com/Total funding
Company locations
Our co-founders bring expertise from quantitative trading at Citadel Securities, SWE at Google and Meta, and PE at Morgan Stanley and Silver Lake. Our founding team comes from rigorous environments in tech and finance—Jane Street, Goldman Sachs, and Bloomberg—where they've proven they can ship at the highest level.
This is a young, hungry team eager to build something massive together.
You'll work alongside people who've already done hard things and are now channeling that intensity into pushing the frontier of AI. The culture is tight-knit and collaborative—fast iteration, open communication, and a genuine sense of camaraderie where the team has become close friends while moving at breakneck speed. If you're looking to work with exceptional people who take ownership and ship relentlessly, this is that team!
We're looking to expand our engineering team into LATAM.