Founding Full-Stack Engineer

Founding Full-Stack Engineer ABOUT GRAND Grand is the first purpose-built fintech for the B2B economy. We’ve raised over $5m to build the most intelligent fintech platform for businesses that operate in the built world. Our first product, Grand Profile, helps businesses understand whom they extend credit to, payment terms, unsecured loans, etc. – surfacing early signals of risk and growth so they can act sooner. Over time, this trust network becomes the foundation for an intelligent payment network where businesses can extend credit, move money, and transact with confidence. Grand is founded and funded by a group of entrepreneurs, investors and researchers who’ve built, sold, worked in, and invested in global fintech, commerce, and AI companies, including Mastercard Labs, Stripe, Shopify, Airwallex, American Express, WhenThen, Loveable, and others. THE ROLE We’re hiring a Full-Stack Product Engineer to build and ship the core product experiences that customers actually use at Grand. This is a hands-on individual contributor role for someone who enjoys owning problems end-to-end. You’ll design, build, and ship features across backend and frontend, working primarily in Java on the backend and Flutter on the frontend, targeting mobile and web, and using AI tools by default to move faster without sacrificing quality. This is a product-focused engineering role. You’ll collaborate closely with backend, frontend, platform, and AI engineering teams, but your primary responsibility is shipping end-to-end product functionality that is reliable, well-designed, and production-ready. You’ll work alongside founders, designers, AI engineers, and other product engineers in a startup / 0→1 environment, shaping how Grand feels, behaves, and earns trust from day one. WHAT YOU’LL DO - Build and ship end-to-end product features across backend and frontend - Write clean, maintainable Java services and APIs running in a cloud-native (AWS) environment - Build high-quality Flutter applications for mobile (iOS & Android) and web - Implement product features using established design systems and component libraries - Contribute thoughtfully to reusable frontend components where needed - Design APIs and data models that operate reliably within a distributed backend - Integrate platform services and AI capabilities into user-facing workflows - Build features with a security-first mindset, operating within established compliance constraints - Work within and contribute to CI/CD pipelines across backend and mobile/web frontend - Account for mobile release cycles, performance constraints, and partial failure - Use AI-assisted development tools to accelerate coding, testing, and refactoring - Own features through their full lifecycle, from idea → production → iteration - Debug, harden, and improve systems based on real-world usage - Move quickly while keeping a high bar for correctness, performance, and clarity MUST HAVE - Strong experience as a full-stack or product-focused engineer - Solid backend experience with Java in real production systems - Hands-on experience building mobile-first applications with Flutter - Experience shipping mobile and/or web products to production - Comfort owning features end-to-end, across frontend, backend, and integration - Experience designing and consuming APIs, modelling data, and managing application state - Understanding of distributed backend concerns (latency, retries, idempotency, failure handling) - Experience shipping and operating software in AWS-based production environments - Experience working in startup or 0→1 environments - Familiarity with CI/CD workflows, including mobile and backend deployment pipelines - Awareness of security, data protection, and compliance considerations when building production systems - Ability to collaborate closely with product, design, and specialist engineers - AI-first mindset, using modern tools to increase velocity responsibly - Clear comm ... (truncated, view full listing at source)