Principal Builder - AI UX

As we continue to grow, we're looking for a Principal AI Product Engineer to be a foundational hire on our new AI Operations team. This is an internal-facing role: your job is to build the infrastructure and tools that let every Hi Marley department work together like a beautiful orchestra. That means understanding how data flows through the company and exposing it at the right level for the right audience; designing our internal knowledge systems, the surfaces by which we make decisions, and the patterns by which teams build and design agents; and making the call — over and over — about what should be centralized and what should live with the team. You'll work alongside a Builder — Technical Infrastructure counterpart who owns the deeper technology spine. Together, you're a small team with a very large scope.

The shape of this person is rare: design taste paired with the ability to ship. You live in Claude Code, Codex, and Cursor — you don't just produce mocks, you build the thing. There's a strong product lean to this role too: you'll be taking a steady stream of signals and requests from across Hi Marley, learning how to prioritize, and managing a portfolio of small, well-shaped internal products at once. If that's you, and you want to set the bar for what great internal experience looks like at a modern insurance company, this is the role for you. Teamwork and shared enthusiasm are a core part of our culture, which is why this role involves joining us in the Boston office for 3 days each week. 

What You'll Do:

• Build the internal operating fabric of Hi Marley: Design and ship the tools every department uses — internal knowledge systems, decision-making surfaces, dashboards, catalogs, agent-builder UIs. The thing you build is what turns Hi Marley into an orchestra rather than a set of soloists.
• Get the data layer right: Understand how data flows across the company — what lives where, what should be centralized, what should stay with the team — and design experiences that expose the right slice to the right audience.
• Design how we build and ship internal agents: Create the surfaces and patterns by which Hi Marley teams compose, register, and trust the agents they author. Discoverable, governable, well-crafted.
• Run a portfolio of small internal products: Take in requests from across the company, prioritize by leverage, sequence the work, and ship. This isn't one big roadmap; it's many small ones, held together with taste.
• Hold the centralized-vs-decentralized balance: One of the harder calls in this role is when a capability belongs to the platform vs. when it belongs to a team. You'll make those calls in collaboration with engineering and ops leadership.
• Partner with the Builder — Technical Infrastructure: They own the platform spine; you own the experience layer on top. You'll be merging each other's PRs.
• Use the tools: You live in Claude Code, Codex, and Cursor (or the next thing if it's better when you read this). You ship at the velocity of a small team because your craft is shaped by agentic coding. 

What We're Looking For: 

• Hybrid design + engineering chops: You have strong design instincts and you ship production code. You sketch, code, and merge your own PRs — no handoff.
• Modern frontend stack: Strong with React, Next.js, TypeScript, Tailwind, shadcn/ui (or equivalent). Comfortable touching the backend when the boundary is unclear.
• Lives in agentic coding tools: Claude Code, Codex, Cursor — these are your default environment. You don't just "use AI to help"; your craft is shaped by these tools.
• Product instinct, not just craft: You can hold ten internal asks in your head, prioritize by leverage, and ship a coherent portfolio of small, well-shaped products. Comfort with ambiguity and with saying no.
• Taste as a moat: You make UI judgment calls beyond what's in the spec — spacing, motion, information density — because you've internalized why those things matter.
• Systems thinking about data and tools: You think in terms of where data lives, what to centralize vs. decentralize, and how to expose it at the right level. You design with the data architecture in mind, not just the screen.
• Communication and craft: You can present your work to engineers, executives, and customers, and explain why you made a decision in language that matches the audience.
• Bonus — AWS familiarity: Hi Marley is AWS-only (Cognito, Bedrock, CDK). You don't need to be deep here on day one — your infra counterpart owns the spine — but be willing to go deep when needed. 

Compensation, Benefits & Perks: 
At Hi Marley, we are committed to fair and transparent pay practices. The annual base salary for this role is expected to fall within the range of [$152,000–$283,000], depending on experience, skills, qualifications, and location. Offers are determined based on these factors as well as internal peer equity. It’s most common for new hires to start near the midpoint of the range, allowing room for growth as employees develop in their role.