The RoleWe'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, but your primary ownership 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 DoBuild and ship end-to-end product features across backend and frontendWrite clean, maintainable Java services and APIs running in a cloud-native (AWS) environmentBuild high-quality Flutter applications for mobile (iOS & Android) and webImplement product features using established design systems and component librariesContribute thoughtfully to reusable frontend components where neededDesign APIs and data models that operate reliably within a distributed backendIntegrate platform services and AI capabilities into user-facing workflowsBuild features with a security-first mindset, operating within established compliance constraintsWork within and contribute to CI/CD pipelines across backend and mobile/web frontendAccount for mobile release cycles, performance constraints, and partial failureUse AI-assisted development tools to accelerate coding, testing, and refactoringOwn features through their full lifecycle, from idea production iterationDebug, harden, and improve systems based on real-world usageMove quickly while keeping a high bar for correctness, performance, and clarityMust HaveStrong experience as a full-stack or product-focused engineerSolid backend experience with Java in real production systemsHands-on experience building mobile-first applications with FlutterExperience shipping mobile and/or web products to productionComfort owning features end to end, across frontend, backend, and integrationExperience designing and consuming APIs, modelling data, and managing application stateUnderstanding of distributed backend concerns (latency, retries, idempotency, failure handling)Experience shipping and operating software in AWS-based production environmentsExperience working in startup or 0 1 environmentsFamiliarity with CI/CD workflows, including mobile and backend deployment pipelinesAwareness of security, data protection, and compliance considerations when building production systemsAbility to collaborate closely with product, design, and specialist engineersAI-first mindset, using modern tools to increase velocity responsiblyClear communicator who can reason about trade-offs and constraintsBias toward shipping real value, not ceremony or over-engineeringNice to HaveExperience building products in fintech or regulated environmentsExposure to payments, onboarding, identity, or data-heavy domainsFamiliarity with frontend testing practices (unit, widget, integration)Familiarity with mobile performance, offline behaviour, and release managementFamiliarity with event-driven or distributed architecturesExperience integrating with AI- or ML-powered systemsExperience contributing to backend systems in cloud-native environments, without owning infrastructureSalary and BenefitsExcellent Salary: Competitive and reflective of impact and responsibilityEquity Options: Meaningful ownership in a long-term companyHybrid Work: At least 3 days in our Dublin officeExtended Remote Work on Request: Outcomes matter more than opticsBuilders, Not Spectators: Work with people who care about shipping things that matterWho You AreYou're a product-minded engineer with a startup mindset. You're comfortable operating in a 0 1 environment, making progress with imperfect information and taking responsibility for outcomes.You enjoy building things people actually use and rely on, especially on mobile. You understand how cloud systems, APIs, and clients interact under real-world conditions.You respect backend architecture and frontend design systems, even when you don't own them. You care about reliability, performance, and clarity, not just getting something working once.You use AI tools to move faster, but you understand the code you ship and stand behind it. You thrive in ambiguity, like owning problems end to end, and take pride in building software that earns trust.You're based in Dublin, or in easy commuting distance (or ready to be), and ready to help build a product from the inside out.If this sounds like you, let's talk.