Lead Product Designer, Spark

Lightspark is building the open payment protocol for the Internet, enabling instant and secure money transfers globally. The Lead Product Designer will shape the user experience for Spark, focusing on the design of developer-facing tools and marketing assets while utilizing AI tools to enhance productivity.

Responsibilities:

• Build the product. Own the design of Spark's developer-facing tools, dashboards, and wallet experiences. Make the complexity of L2 infrastructure, stablecoin settlement, and multi-chain interoperability feel simple and trustworthy
• Ship prototypes and demos. Build functional, high-fidelity prototypes that show partners and prospects what Spark can do, not mockups, but working software you can tap through and share. Think interactive demos, proof-of-concept integrations, scenario walkthroughs
• Create marketing and launch assets. Design and build pages, visuals, and materials that communicate Spark's capabilities to developers, enterprises, and the broader crypto ecosystem. You'll help tell the story of what's possible
• Work across Lightspark. While Spark is your primary focus, you'll contribute to the broader Lightspark product and brand alongside three other designers. Small team means you'll have range
• Use AI to move faster. AI isn't a bullet point here, it's how the team works. You'll use tools like Cursor and Claude to prototype, iterate on UI, and compress the distance between idea and shipped product

Requirements:

• Minimum 5+ years of experience shipping high-quality digital products at a product-driven company
• Strong visual and interaction design skills, you care about craft and it shows in your portfolio
• Fluent with AI-assisted design and development workflows. You already use tools like Cursor, Claude, Copilot, or similar to accelerate your work
• Experience designing for technical audiences: developers, platform teams, or infrastructure products
• Self-directed. You can take a loosely defined problem, figure out what needs to exist, and build fast
• Experience with crypto, payments, fintech, or developer tools
• Familiarity with Bitcoin, Lightning, stablecoins, or L2 networks — or the curiosity to learn fast
• Comfortable working in or around code (HTML/CSS/JS). Not a requirement — AI handles a lot of the heavy lifting — but it helps
• A portfolio that includes prototypes, demos, or interactive experiences — not just static screens
• Experience on a small design team where you wore multiple hats (product, brand, marketing, prototyping)
• An eye for motion, interaction, and the small details that make software feel considered