Principal Software Engineer

What you'll do

• Guide product concepts from problem definition through prototyping, launch, and iteration based on usage data.
• Build and ship production agentic AI systems, prompts, analyses, and supporting services; contribute to shared harness engineering patterns.
• Set engineering standards and technical direction, while mentoring engineers and contributing to hiring and technical interviews.

What they ask for

• Direct experience developing, deploying, and improving agentic AI systems in real-world production settings.
• Over 10 years of full-stack software engineering experience, including at least 3 years in a Tech Lead, Staff, or Principal role guiding technical direction.
• Modern JavaScript / TypeScript and at least one of Go, Python, or C#; production coding experience.
• Bachelor’s degree or equivalent experience; strong systems and infrastructure experience, including AWS at scale, CI/CD, PostgreSQL, APIs, test automation, observability, and reliability.

Nice to have

• Experience with platform or horizontal services, Product Lifecycle Management (PLM), or a tri-lead engineering model.
• Experience with Kubernetes, Akamai, Terraform, or equivalent infrastructure-as-code tooling; familiarity with Magic: The Gathering, Dungeons & Dragons, or tabletop gaming.

Pay

$172,600 — $259,000 USD (base salary)

Tools

JavaScript, TypeScript, Go, Python, C#, AWS, PostgreSQL, Kubernetes

AI focus

Hands-on development, deployment, evaluation, and production iteration of agentic AI systems; work includes prompts, tools, LLMs, agents, Skills, MCP, evaluation frameworks, guardrails, and consideration of cost, latency, determinism, and reliability.