Senior AI Engineer

Harnham; Pittsburgh (Allegheny County); On-site; USD 100,000 - 130,000; Full time

Benefits offered by this job

High-impact projects

Substantial autonomy

Exceptional technical peers

Job summary

Harnham in Pittsburgh is seeking a skilled engineer to join their team focused on building advanced agentic AI systems. This role requires a minimum of 5 years of experience in developing production ML or LLM-driven systems and strong expertise in LLM integration and cloud infrastructure, preferably AWS. The position offers high-impact projects with substantial autonomy and the chance to work alongside exceptional technical peers in a mission-driven environment.

Qualifications

• 5+ years building production ML or LLM-powered systems.
• Hands-on experience with LLM integration and agent frameworks.
• Familiarity with cloud infrastructure, preferably AWS.

Responsibilities

• Design and build advanced agent-based systems with planning capabilities.
• Develop modular 'skills' and components that integrate with services.
• Implement evaluation frameworks and regression testing.
• Partner with teams to address complex operational challenges.

Skills

Building production ML or LLM-powered systems

LLM integration

Agent frameworks

Cloud infrastructure (AWS preferred)

Git

CI/CD

Tools

React

Next.js

Job description

This organisation operates within a highly secure, mission‑critical environment and is scaling its advanced AI engineering function. They focus on building intelligent, autonomous systems that streamline complex operational workflows and support high‑stakes decision‑making. The work is deeply technical, fast‑moving, and has genuine real‑world impact.

THE ROLE

You’ll be joining a small, high‑calibre engineering team focused on next‑generation agentic AI. The position involves building multi‑agent architectures, long‑horizon planning systems, and robust tools that enable agents to operate reliably at scale.

The ideal candidate loves solving ambiguous technical problems, has shipped LLM‑driven systems end‑to‑end, and thrives in a startup‑style environment.

KEY RESPONSIBILITIES

• Design and build advanced agent‑based systems with planning, routing, memory, and tool‑use capabilities
• Develop modular 'skills' and components that integrate with internal services and data pipelines
• Own architectural standards, scalability, and system reliability
• Implement evaluation frameworks, behavioural telemetry, and regression testing
• Partner closely with product and implementation teams to address complex operational challenges

EXPERIENCE REQUIRED

• 5+ years building production ML or LLM-powered systems
• Hands‑on experience with LLM integration, agent frameworks, and cloud infrastructure (AWS preferred)
• Familiarity with Git, CI/CD, and modern engineering best practices

DESIRABLE EXPERIENCE

• Multi‑agent coordination, tool orchestration, or agentic system design
• Exposure to startup or rapid‑growth engineering teams
• Eligibility for work in secure environments
• Experience with front‑end frameworks (React/Next.js) is a bonus

THE OFFER

• High‑impact projects with substantial autonomy
• Chance to shape a new generation of agentic AI capabilities
• Work with exceptional technical peers in a deeply mission‑driven setting