Product Designer (Seoul)

Cheiron raised $8 million in seed funding led by Menlo Ventures — building the operating system for drug programs.

■ COMPANY OVERVIEW

In July 2026, Cheiron announced an $8 million seed investment round with Menlo Ventures participating as the lead investor (total funding of $13 million). Industry leaders including Moderna co-founder and MIT Professor Robert Langer, former Pfizer Chief Medical Officer Freda Lewis-Hall, Chai Discovery co-founder and CEO Josh Meier, former Starbucks CEO Laxman Narasimhan, and former Apple AI lead John Giannandrea have joined with investment and strategic support.

Cheiron is building the first AI-native operating system that represents an entire drug program as a single, connected system. Cheiron's platform helps biopharma teams represent the full state of a drug development program — the claims, evidence, assumptions, risks, decisions, and commitments that determine the success or failure of a therapeutic — and allows them to reason and stress-test upon it. Less than six months after launch, tens of thousands of biopharma professionals are using Cheiron; it has been adopted by major drug developers, and 7 out of the top 10 biopharma companies in Korea are already using it.

Cheiron is expanding into the pharmaceutical CMC (Chemistry, Manufacturing, and Controls) domain. CMC is the area that governs how medicines are made, tested, and maintained consistently throughout their entire product lifecycle. This work involves hundreds of regulatory commitments, post-approval changes, and country-specific submissions, yet today's field still operates relying on documents, spreadsheets, and the memories of individuals. Cheiron adds an intelligence and reasoning layer specialized for CMC regulations on top of these manual workflows.

Cheiron was founded in 2024 by AI researchers from Stanford. The team includes leaders with decades of experience in the pharma and biotech sectors, and the headquarters is located in Los Altos, California, USA. We are currently building and deploying products while rapidly expanding into the global market.

Work communication is primarily conducted in English, and you will work with the US-based Leadership / Product Team.

■ KEY RESPONSIBILITIES

• Design Cheiron's end-to-end product experience across web and mobile.

• Directly connect everything from initial problem definition to high-fidelity UI and actual shipped products.

• Structure complex AI and knowledge-based workflows into interfaces that users can naturally understand and use.

• Lead the entire product design process, from user flow, wireframe, prototype, and interaction to production-ready design.

• Implement UX challenges unique to AI products—such as streaming responses, displaying sources/evidence, and multi-step task states—into actual product experiences.

• Create experiences that build user trust and long-term engagement through high-level visual craft and interaction quality.

• Derive insights through user research and usability testing, and connect them to actual product direction and decision-making.

■ QUALIFICATIONS

• Bachelor's or Master's degree in UI/UX, HCI, Design, or a related field.

• 3+ years of Product Design experience and excellent visual sensibility.

• Experience building products, features, or side projects from end-to-end and shipping them to actual users.

• Proficiency in Figma and experience in production-quality design.

• High standards for detail and interaction perfection (an intuition that small differences change the user experience).

• Execution capability to build products quickly while collaborating closely with engineers and PMs.

■ PREFERRED QUALIFICATIONS

• Experience rapidly launching and improving products in a startup environment.

• Experience building or expanding design systems for products in actual operation.

• Mobile app design experience.

• Experience designing AI-based products (Search, Chat, document-heavy workflows, etc.).

• Experience in knowledge-heavy industries such as Bio/Pharma, Legal, or Fintech.

• Basic understanding of HTML/CSS and the design implementation process.

■ BENEFITS & PERKS

• (Corporate Card) Support for lunch/dinner expenses, support for early morning/late night transportation.

• Other in-office snacks, support for business transportation, etc.

• $300 per person per month for AI tool subscriptions.

■ RECRUITMENT PROCESS

Document Review ＞ Technical Interview ＞ Take-home Assignment ＞ In-depth Interview ＞ Cultural Interview