# Staff SW Engineer at Fastino

- Company: Fastino
- What the company does: Fastino Labs builds open language and decision models for agentic AI, including GLiNER, GLiDE and the Fastino fine-tuning agent. See our research and models. Backed by Insight.
- Company website: https://www.fastino.ai/
- Type: Startups (AI role)
- Level: Senior
- Location: San Francisco Bay Area
- Work setup: On-site
- Posted: 2026-10-30
- Apply by: 2026-12-14
- Apply: https://jobs.ashbyhq.com/fastino-ai/eea1163c-8f0e-4be3-a99b-502bd4e631cb?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/fastino-staff-sw-engineer/

## About the role

Help define the technical direction for Fastino’s platform, contributing to the architecture decisions that let us scale without slowing down. Design and build our agent harness, including the runtime loop, tool calling, context management, and error recovery, plus the eval harnesses that measure agent reliability. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Required: 8+ years of hands-on software engineering experience, including time as a tech lead or driving architecture across a team or product
- Required: Strong architectural skills, with a track record of designing and scaling production systems that handle real load
- Required: Production experience with agentic systems, AI training pipelines, or inference pipelines, ideally more than one
- Required: Hands-on experience deploying software on AWS with Kubernetes and Terraform, ideally into customer-managed or multi-tenant environments
- Required: Experience building and running sandboxed execution environments for agent workloads, ideally with Modal Sandboxes
- Required: Extensive experience building with AI coding agents, and a demonstrated ability to guide them to produce clean, production-quality code. You know how to scope tasks, review output critically, and catch what agents get wrong

Tags: Engineering

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/fastino-staff-sw-engineer/