Principal Software Engineer - Agentic AI

We're building an autonomous infrastructure engineering agent: think Claude Code, but for your cloud. If you're excited about agentic AI systems that solve impactful problems for engineers, developers, and security experts at innovative startups and iconic enterprises alike, this role is for you.

Neo is Pulumi's answer to what infrastructure engineering looks like in an AI-first era. It's a virtual infrastructure teammate that understands your cloud environment, plans and executes multi-step operations, and brings domain expertise to problems ranging from spinning up complex ML infrastructures to cloud migrations to continuous compliance enforcement.

What makes Neo possible is infrastructure-as-code: by modeling cloud infrastructure in code space, we can leverage the fact that LLMs are already excellent at coding to affect cloud infrastructure changes. Combined with Pulumi's registry and petabytes of deployment history, we have a unique foundation for building infrastructure intelligence.

We're looking for engineers to build all aspects of Neo: from agent orchestration and tool interfaces to the web experience where users watch Neo work, approve operations, and understand its reasoning, to the interface with the models and how we orchestrate and fine-tune them to maximize impact. We seek bold thinkers to reimagine the entirety of cloud engineering.

While Pulumi is headquartered in Seattle, WA., we are dedicated to being a remote first company. This role will be located remotely. 

• →Build the planning and execution systems that let Neo safely perform multi-step infrastructure operations across AWS, Azure, GCP, Kubernetes, and more
• →Design tool interfaces that give the agent semantic understanding of cloud resources and access to engineering workflows
• →Develop the context systems that help Neo understand each customer's infrastructure patterns and usage
• →Create the feedback loops and self-correction mechanisms that make autonomous operation reliable
• →Build evaluation frameworks to measure agent performance across Neo's capability areas: migrations, compliance, cost optimization, diagnostics, and more
• →Work on the web interface where Neo operates as a "virtual teammate"—task assignment, progress visibility, approval workflows
• →Integrate Neo's capabilities into Pulumi's MCP Server for agent-to-agent workflows
• →Collaborate with platform teams to deeply integrate agent capabilities into the CLI, SDKs, and Pulumi Cloud

• Are genuinely excited about agentic AI—systems that plan, act, and adapt in the real world, not just generate text
• Have built production systems using LLMs, including experience with tool use, function calling, and multi-step orchestration
• Care deeply about reliability and safety when AI systems take real actions with real consequences
• Are comfortable across the stack—agent orchestration, backend services, and frontend interfaces
• Have strong Python and TypeScript skills (our primary languages) and can pick up new environments quickly
• Bring a product mindset: you think about what users need, not just what's technically interesting
• Communicate clearly and work well with a distributed team

• Experience with cloud infrastructure (AWS, Azure, GCP) or infrastructure-as-code tools
• Background in building developer tools, CLIs, or platform engineering systems
• Familiarity with container orchestration (Kubernetes, Docker)
• Experience building evaluation frameworks and benchmarks for AI systems
• Knowledge of prompt engineering, fine-tuning, or retrieval-augmented generation

Pulumi is reimagining how teams build cloud software, enabling developers and infrastructure experts to work better together through a unique combination of programming languages, tools, and systems innovation.

Our flagship infrastructure as code technology is open source and our SaaS product, Pulumi Cloud, provides platform teams, secrets management, and cloud management capabilities, and more. We have pioneered leveraging AI across all of these areas with our LLM-powered Pulumi Copilot to push the boundaries of what's possible. At Pulumi, we dream big, in the pursuit of helping our customers out-innovate and win.

Founded in 2017 by industry veterans with over five decades of combined experience building developer platforms, Pulumi now has a global community of more than 350,000 members and serves over 3,250 customers. Despite our rapid growth, we're still only getting started, and are early in our mission to democratize the cloud. If you thrive in a fast-paced, high-performance, we want to work with you to accelerate Pulumi's impact.

At Pulumi, we don't just accept difference, we celebrate, support, and thrive on it for the benefit of our employees, our products, and our customers. Pulumi is proud to be an equal opportunity workplace and is committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status. If you have a disability or special need that requires accommodation, please let us know.