Principal Design Technologist

Lirio is a technology/software company that provides expertise in a variety of behavioral science domains (e.g., behavioral economics, social psychology, public health), data science, and machine learning to drive consumer engagement, close gaps in preventive and chronic care, and promote health and well-being across an individual’s lifespan. Lirio’s behavior change AI platform unites behavioral science with advanced artificial intelligence (AI) to deliver Precision Nudging health interventions. Precision Nudging is the application of behavioral science to health interventions personalized by AI to each individual that overcome barriers to action at the right time and place for scalable, behavior change.

This is a remote role with the opportunity to be hybrid if located in Tennessee. All applicants must be authorized to work in the US without sponsorship.

To ensure an excellent onboarding experience and integration into the company, new colleagues will spend their first week onsite at one of our offices in Tennessee. Travel expenses will be paid. This is a requirement.

Position Summary

The Principal Design Technologistowns the end-to-end experience of Lirio’s Agentic platform: how patients and members, enterprise clients, operators, developers, and AI agents discover, integrate with, operate, and get value from it. As a senior individual contributor and hands-on technical design leader, they turn product strategy into clear personas, end-to-end workflows, and agentic interaction patterns, then prove those experiences with working, code-based prototypes and demos rather than static mockups alone.

They establish and steward the platform’s design principles and a shared design system (a reusable component library and design tokens the broader team and AI tooling can build from), ensuring those principles are faithfully realized in the shipped product through close, hands-on collaboration with engineering. Partnering with technology and product leaders, they help shape platform strategy and lead requirements for the client, user, developer, and agent experience. The role is Lirio’s design subject-matter expert and advocate across both the existing product and the Agentic platform.

Essential Duties & Responsibilities

Agentic Platform Experience Design (80%)

• Own the end-to-end experience design for the Agentic platform. Define the full set of personas, including the ones that often get overlooked: patients/members, enterprise clients and their administrators, internal and system operators, developers/integrators, and AI agents (internal and third-party). Design the workflows and interaction patterns for each.

• Partner with technology and product leaders to shape platform strategy, and lead requirements development for the client, user, developer, and agent experience.

• Design the operator and administrator experience: how teams configure, deploy, operate, and monitor the platform across environments and tenants.

• Design the developer and integration experience (DX): how developers, partners, and external agents discover, integrate with, and operate against Lirio’s APIs, SDKs, and agent interfaces (e.g., REST/GraphQL APIs, A2A, MCP).

• Establish, document, and steward the platform’s design principles and a shared design system (a reusable component library and design tokens for use across the broader team and by AI tooling), and ensure they are consistently realized in the shipped product through hands-on collaboration and design reviews.

• Build high-fidelity, code-based prototypes and demos that turn requirements and workflows into working, testable experiences.

• Define how AI and agent behavior surfaces to people in ways that are transparent, trustworthy, and genuinely helpful, includi…