Founding AI Agent Engineer

Allus AI (YC F25); Atlanta (GA); On-site; USD 120,000 - 160,000; Full time

Job summary

A growing AI company is seeking an experienced software engineer to develop core AI-native software systems. The role involves building workflows and tools powered by LLMs, with a focus on engineering skills, prototyping, and backend development. Ideal candidates will have 5+ years of production experience and a strong understanding of multi-step workflows. You will be expected to use modern AI tools and contribute significantly to product development.

Qualifications

• 5+ years of experience building production software systems.
• Strong backend engineering skills, including APIs and data pipelines.
• Experience building LLM-powered applications.

Responsibilities

• Own the architecture and development of core AI-native software systems.
• Rapidly prototype and ship new AI-driven product capabilities.
• Design evaluation and monitoring systems for workflow quality.

Skills

Backend engineering skills

Prototyping and production software

LLM application development

Product intuition

Multi-stack work

Tools

Python

Rust

SQL

TypeScript

React

Node.js

FastAPI

Docker

Redis

AWS

GCP

Job description

What You’ll Do

• Own the architecture and development of core AI-native software systems across the platform
• Build agentic workflows that turn user requirements and example inputs into structured, multi-step product workflows
• Design systems for orchestration, tool use, task planning, state management, and workflow reliability
• Build software that supports data intake, review loops, human feedback, and iterative task refinement
• Develop infrastructure for prompt orchestration, memory, retrieval, and contextual personalization
• Build internal tools and user-facing product features powered by LLMs and agents
• Design evaluation and monitoring systems for workflow quality, reliability, latency, and production readiness
• Improve developer velocity through strong abstractions, automation, and AI-native tooling
• Rapidly prototype and ship new AI-driven product capabilities

What We’re Looking For

• 5+ years of experience building production software systems
• Strong backend engineering skills, including APIs, data pipelines, and system design
• Experience building and shipping LLM-powered applications or agentic product workflows
• Strong understanding of prompt design, tool use, retrieval, orchestration, and evaluation techniques
• Ability to move quickly from prototype to production
• Strong product intuition and desire to build user-facing AI experiences
• Comfort working across multiple parts of the stack with high ownership

Relevant Experience

• Full-stack software development
• Agent orchestration systems and multi-step workflow design
• RAG systems, embeddings pipelines, or retrieval architectures
• Human-in-the-loop systems and review workflows
• Evaluation systems, observability, and production monitoring
• Internal platforms, developer tooling, and automation systems

AI-native engineering

AI-native engineering: We are building an AI-native company and expect engineers to actively use modern AI tools in their daily workflow. Strong candidates should already be comfortable using tools such as Cursor, Claude Code, modern AI coding assistants, and LLM-based and agent-based development workflows.

Technologies we use

Python, Rust, SQL, TypeScript, React, Node.js, FastAPI, LangChain, Docker, Redis, AWS, GCP.