Senior Full-Stack Product Engineer (Startup, SaaS, Amsterdam)

<p>Over 2 million food & beverage (F&B) businesses operate in the EU.</p> <p>60% face failure within their first year</p> <p>80% in five years.</p> <p><strong>SOUS is here to change that.</strong></p> <p>We’re building a platform that empowers independent F&B creators to thrive - unlocking new revenue streams, cutting costs, and scaling online growth with ease. From e-commerce to delivery management to building loyal communities, we’re reimagining how independent F&B brands grow in a digital-first world.</p> <p>In just two years, we’ve scaled rapidly, onboarded top talent, and brought in over €8M in sales for our clients. Now, we’re evolving - transitioning to a SaaS-first model that will shape the future of the €100B independent F&B market.</p> <p>To make this vision a reality, we’re searching for a Senior Full-Stack Product Engineer who’s as excited about building great products as they are about leading a team. If you’re ready to roll up your sleeves, write brilliant code, and influence the technical direction of a high-growth startup, we’d love to meet you.</p> <h2>Tasks</h2> <p><strong>Code, Build, and Ship (70%-80% of your time):</strong></p> <ul> <li>Develop and refine our core backend (Django) and frontend (React + TypeScript).</li> <li>Create and improve APIs for users, orders, shipping, and partner tools.</li> <li>Build smart integrations with tools like Shopify and Mendrix.</li> <li>Scale and optimize cloud hosting on GCP (and AWS in the future).</li> <li>Ensure our stack is clean, scalable, and future-proof.</li> </ul> <p><strong>Product Engineering (20%-30% of your time):</strong></p> <ul> <li>Architect and scale multi-tenant SaaS solutions for the next phase of SOUS.</li> <li>Collaborate with product, design, and operations teams to align technical plans with business goals.</li> <li>Set the bar for code quality, testing (TDD/BDD), and CI/CD workflows.</li> <li>Mentor developers to help them grow while creating a culture of engineering excellence.</li> <li>Identify opportunities to innovate and improve.</li> </ul> <h2>Requirements</h2> <p><strong>Hands-On Experience:</strong></p> <ul> <li>You’ve been in the trenches as a full-stack developer for 10+ years, and you’re fluent in Python (Django) and JavaScript/TypeScript (React).</li> <li>You’ve built and scaled SaaS applications that are battle-tested in production.</li> <li>Your database game is strong - PostgreSQL and ORMs are second nature to you<strong>.</strong></li> </ul> <p><strong>Leadership in Action:</strong></p> <ul> <li>You’ve led teams, balancing writing code with mentoring and decision-making.</li> <li>You can architect systems that are both elegant and robust while keeping your hands dirty in the codebase.</li> </ul> <p><strong>Smart Development Practices:</strong></p> <ul> <li>Testing isn’t just a buzzword for you - it’s how you build (Pytest, React Testing Library).</li> <li>You’re fluent in Git workflows and CI/CD tools (e.g., Bitbucket Pipelines).</li> </ul> <p><strong>API experience:</strong></p> <ul> <li>Deep experience in building and integrating APIs—whether it’s RESTful APIs, JWT Auth, or third-party tools like Shopify and Mendrix.</li> </ul> <p><strong>Frontend Know-How:</strong></p> <ul> <li>Modern frameworks (React, MUI) are where you shine.</li> <li>You know how to make frontends fast, responsive, and delightful.</