Product Designer

Flex is a company dedicated to simplifying HSA and FSA payments for health and wellness brands. They are seeking a Product Designer to lead end-to-end design for the merchant experience and collaborate closely with the engineering team to deliver impactful products.

Responsibilities:

• Own product design end-to-end on the merchant team, from discovery and user research through final UI and shipping with engineers
• Lead user research: run merchant interviews and surveys, hop on sales and customer calls, and turn what you learn into clear product direction
• Partner with engineering and the founding team to define the merchant roadmap, scope features, and ship quickly without sacrificing craft
• Design clear, well-considered user flows in Figma and the visual UI to support them
• Use AI tools (Claude, Cursor, Cowork, v0, etc.) to prototype, validate, and iterate on ideas faster than traditional design workflows allow
• Collaborate with our team on evolving and maintaining the Flex design system
• Pitch in across the company when needed (the occasional marketing asset, website tweak, or one-off) without needing it to be your job description
• Contribute to a culture of learning, problem-solving, and operational excellence

Requirements:

• 3+ years of experience as a product designer, ideally with time at a high-growth startup or fast-moving product team
• A traditional, user-first product designer: you start with understanding the user and the problem, then design the experience. Visual polish comes after
• Strong in the middle ground of product design: comfortable with both user research and visual design, but your real strength is designing the user flow and experience that connects them
• Expert in Figma. It's your primary tool
• Strong cross-functional collaborator: you've worked closely with engineers and business stakeholders day-to-day, not just other designers
• Comfortable being user-facing: you'll happily jump on a call with one of our biggest merchants to dig into their experience, or sit in on a sales call to understand how prospects think
• Actively use AI in your design workflow today, for prototyping, exploration, or accelerating your work, and stay current as the design industry evolves around it
• Low ego, resourceful, curious, and excited to wear multiple hats at an early-stage company
• Excellent written and verbal communication skills
• Take ownership and follow through on commitments
• Experience designing B2B / merchant-facing products, payments, or fintech
• Experience building or contributing to a design system
• Comfort using AI tools to ship code or prototypes (e.g., building or maintaining a marketing site in Cursor or similar)
• Background in healthcare, HSA/FSA, or e-commerce checkout