Pasito (YC S22) Fullstack engineer UI

Pasito is the AI workspace for employee benefits.

Were rethinking how group insurance and benefits are underwritten delivered used and measured - by the people who design them and the people who depend on them. Instead of static PDFs disconnected systems and manual workflows Pasito brings plan design payroll and benefits data claims and financial context into a single AInative workspace that helps benefits actually work for the 178 million Americans who depend on this system.

We dont build for brokers carriers and employers - we build with them. That collaboration shows up in everything we ship: AI agents that extract and structure plan data tools that turn complexity into clarity for employees and workflows that save carriers and consultants hundreds of hours per case.

Today Pasito supports many of the largest insurance carriers and brokers in the U.S. Were backed by Y Combinator and Core Innovation Capital and were growing quickly. We ship fast iterate relentlessly and care deeply about building systems that are accurate scalable and human.

If youre excited to work alongside exceptional operators and engineers and apply AI in a legacy industry where precision and trust matter Pasito is the place for you.

Were looking for a UI-heavy product-focused Software Engineer to help us build the core product experiences that power Pasitos AI workspace.

Were specifically looking for someone whose strength is building sophisticated state-rich user interfaces and who can operate across the stack as needed to deliver those experiences end-to-end.

Youll work closely with Product and Design take deep ownership of complex UI systems and help define how AI-native software should feel in a regulated high-impact industry.

As an early member of the engineering team youll have real ownership and influence: shaping UI architecture setting quality standards and delivering mission-critical experiences for highly engaged clients.

• Own complex state-rich UI systems
  Design and build rich editing and collaboration experiences using ProseMirror / Tiptap and Yjs with a focus on correctness performance and excellent UX.

• Build AI-native product experiences
  Integrate AI and LLM-powered workflows directly into the UI - especially within rich-text data-dense and collaborative environments.

• Collaborate cross-functionally
  Work closely with Product Design Sales and Client teams to understand real customer workflows and translate them into durable product solutions.

• Continuously improve systems
  Refine existing patterns challenge assumptions and help define what great looks like as the product and team scale.

• A UI-first product-driven engineer with 3 years building complex web applications

• You care deeply about interaction quality performance and building interfaces that feel intuitive and trustworthy

• You have strong technical judgment and know when to prioritize innovation vs. stability

• Youre comfortable operating across the stack with strength in frontend and user-facing systems

• You enjoy close collaboration with product managers and designers

• Deep expertise building rich UI editors using ProseMirror / Tiptap

• Experience building real-time collaboration and local-first applications using Yjs

• Experienced with TypeScript and modern frameworks like

• Hands-on experience integrating AI / LLM-powered workflows (e.g. ChatGPT or Claude) into user-facing products

• Strong familiarity with frontend testing tools and best practices

• Meaningful ownership: Build foundational systems used by carriers brokers employers and employees at scale

• Real impact: Your work directly improves how people understand and use their benefits

• Growth: Join early and grow with the company as we scale product team and distribution

• Silver screening Interview

• Silver Technical Interview

• Client Screening Interview

• Client Technical interview

• Client Behavioral Interview

Required Experience:

IC