Software Engineer (AI Infra)

Company: Pylon
Location: San Francisco
Posted on: April 1, 2026

Job Description:

At Pylon, we're building the future of B2B Post Sales. We’re building the all-in-one B2B post-sales support platform powered by conversational data and layered with intelligence to help our customers run their operations in real-time. We’re backed by a16z, BCV, General Catalyst, Y Combinator. Currently more than 1300 companies including Linear, Cognition (makers of Devin), Modal Labs, and Incident.io run their support and customer success workflows with Pylon. You'll also find us on the Enterprise Tech 30 List . Our product has a very large problem space so there’s a ton of stuff to build and take ownership of - we’d be excited to get your help as we're hiring several extremely talented software engineers across the stack. In this role, you will Build the platforms that power Pylon's AI features - prompt executions, search infra, and more! Improve LLM observability - AI evals (online and offline), scorers, and set up Pylon's AI for the next wave of scaling Improve the quality and performance of AI features You might be a fit if the below describes you You dislike meetings and would much rather focus your time on building, being productive, and shipping code You have strong engineering fundamentals, code efficiently, and you know what you're great at and what you're less great at You thrive when you have autonomy, own as many of the details as possible, and project manage your own work You're in SF or you're willing to relocate, you love working in-person, and you're serious about joining us to build a culture we'll all love We work with React, Golang, GraphQL, and AWS You'll join a strong technical team of senior engineers from places like Samsara, Affinity, and Airbnb. Our perks Fully covered medical, dental, and vision insurance for employees 401(k) retirement plan Commuter benefits Parental leave ? 14 company holidays unlimited PTO ? Annual offsite Lunch, dinner, and snacks at the office ? Fitness stipend More about Pylon Funding: Series B led by a16z and BCV ($51M total raised) Founders: Advith Chelikani , Robert Eng , and Marty Kausas Team: Currently 90 and growing!

Keywords: Pylon, Milpitas , Software Engineer (AI Infra), IT / Software / Systems , San Francisco, California