Who We Are At Multiplo, we're reimagining wealth management for millennials. Our mission is to make protecting and growing wealth an intuitive, enjoyable experience while democratizing tools once reserved for the top 1%. Our AI-powered human financial advisory platform combines cutting-edge technologies like Machine Learning, Projections, and Generative AI to offer hyper-personalized advice. By tailoring insights to individual profiles, goals, and behavioral economics, we empower users to make confident financial decisions. Our MVP beta already offers users an aggregated view of all their assets (even exotic ones) through an intuitive dashboard. We collect and analyze data to deliver tailored financial plans, actionable insights and actions, and systematic reporting with 24/7 access to a personal financial advisor. What We're Looking For We're seeking a Senior Backend/Fullstack Engineer to join our founding engineering team. You'll work directly on our core platform, shaping its development and infrastructure. As a key team member, you'll enjoy hands-on responsibility in building a modern, automated development lifecycle with a focus on serverless microservices, scalable solutions, and a seamless user experience. What You'll Do - Become an integral part of our planning, retrospectives, and development cycles from day one. - Deploy code to production within your first week, actively contributing to our product and reviewing pull requests. - Build and optimize scalable, serverless microservices using Node.js, TypeScript, and AWS, and frontend develpment Required Skills - 4–8 years of experience in backend/fullstack development, with expertise in Node.js and TypeScript. - Solid understanding of serverless microservices, design patterns, and testing best practices. - Proficiency in RESTful API development and consumption. - Strong knowledge of relational databases (PostgreSQL) and SQL. - Experience with cloud-native tools (AWS, CI/CD pipelines, GitHub). Nice-to-Have Skills - Familiarity with Pulumi, SST, and Docker. - Experience building secure systems and ensuring data protection. - Knowledge on frontend development and architectures - Experience working with our technological stack (Next.js / NodeJs / Typescript / Drizzle / PostgreSQL / AWS API GW / Lambdas) Personal Attributes - A high-achiever mindset with a passion for innovation and excellence. - Collaborative and effective team player with strong problem-solving skills. - Data-driven and analytical, with a focus on delivering results. Bonus Points - Experience in financial services or investment platforms. - Familiarity with financial concepts or a background in the finance domain. Why Join Us? - Work with a world-class team experienced in successful projects. - Flexible work environment (Barcelona-based with remote-friendly policies). - Early-stage responsibility and impact from day one. - Competitive base salary (€40k–€50k) with opportunities for variable compensation and stock options. Hiring Process 1. Talent Interview (1 hour) 2. Technical Interview (1 hour) 3. Technical Assessment (3 days) 4. Assessment Review with the technical team