Senior Staff Engineer, AI Systems & LLM Agents

Shared Context Lab; New York (NY); On-site; USD 150,000 - 210,000; Full time

Job summary

Shared Context Lab is seeking a senior engineer who is hands-on and cares deeply about craft. You will turn ambitious ideas into enduring products and systems while shaping the technical foundation of the company.

In person in San Francisco or New York, you will build core agent, product, and infrastructure systems, create simulation environments, and design scalable architectures with a strong emphasis on UX and human-centered product development.

Qualifications

• Build and ship complex products or systems with ownership.
• Deep experience in backend and distributed systems (Python, Postgres, React, Next.js, TypeScript).
• Built LLM agents, simulations, or evaluation frameworks.

Responsibilities

• Build core agent, product, and infrastructure systems.
• Create simulation environments for users, schedules, relationships, and multi-agent interactions.
• Develop evaluations for long-horizon agent behavior, reliability, and safety.
• Design systems for context, memory, orchestration, and tool use.
• Set a high bar for architecture, engineering quality, and product craft.
• Help shape the technical roadmap, culture, and team.

Skills

Backend engineering

Distributed systems

Architecture

Product instincts

UX awareness

Autonomy

Tools

Python

PostgreSQL

React

Next.js

TypeScript

Job description

Shared Context Lab is seeking a senior engineer who is hands-on and cares deeply about craft. You will turn ambitious ideas into enduring products and systems while shaping the technical foundation of the company.

In person in San Francisco or New York, you will build core agent, product, and infrastructure systems, create simulation environments, and design scalable architectures with a strong emphasis on UX and human-centered product development.