Lead Product Designer, Spark at Lightspark

<p style="min-height:1.5em">Lightspark is creating the Money Grid, modern, open financial infrastructure that makes payments accessible, affordable, and instant for businesses and users worldwide. We're challenging the status quo, updating the current system, and empowering our partners to build better solutions. Together, we're building the most advanced financial infrastructure, open, instant, and global, inspiring a future where anyone, anywhere can access the full potential of digital money.</p><p style="min-height:1.5em">We're building infrastructure that makes Bitcoin and stablecoins as easy to use as the internet. We're backed by a16z crypto, Paradigm, Ribbit Capital, Coatue, and Thrive Capital. Our products power wallets, instant deposits, buy/sell, and global money movement for companies like Tether, Deblock, Breez, Xverse, and Privy.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>About Spark</strong></p><p style="min-height:1.5em">Spark is a Bitcoin L2 that lets you move Bitcoin and stablecoins instantly, at near-zero cost, without bridges or wrappers. It's open source, natively interoperable with Lightning, and already live in production. Wallet SDKs, token issuance, zero-conf deposits. Spark is how the next generation of money apps gets built. Learn more at <a target="_blank" rel="noopener noreferrer nofollow" href="http://spark.money">spark.money</a>.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>About the team</strong></p><p style="min-height:1.5em">The design team at Lightspark is four people. We use AI tools (Cursor, Claude, Figma) daily to move from idea to working software fast. We build interactive prototypes as real code, design marketing assets that explain complex infrastructure simply, and collaborate directly with engineering. The team is tight-knit, opinionated about craft, and moves quickly.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em"><strong>What you'll do</strong></p><p style="min-height:1.5em">This role is primarily focused on Spark. You'll be the designer shaping how the world experiences a new Bitcoin payment layer, through product, demos, and everything in between.</p><p style="min-height:1.5em"><strong>Build the product.</strong> 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.</p><p style="min-height:1.5em"><strong>Ship prototypes and demos.</strong> 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.</p><p style="min-height:1.5em"><strong>Create marketing and launch assets.</strong> Design and build pages, visuals, and materials that communicate Spark's capabilities to developers, enterprises, and the