Full Stack Developer - REMOTE ONLY MEXICO

About Scalepex Scalepex is a nearshore partner that empowers businesses to scale efficiently and effectively through exceptional services. With a strong focus on customer success, innovation, and cultural alignment, we support companies in building high-performing teams across industries. At Scalepex, we believe in fostering an environment where our people can thrive, grow their careers, and make a real impact. About the Role We are looking for a Full Stack Developer to join a high-impact team building a Partner Marketplace platform from the ground up. This is a hands-on full-stack engineering role. You will be embedded in a small, senior team, working across backend services, frontend applications, and cloud infrastructure. You will own real features end-to-end from API contracts to UI components to deployment pipelines and you will be expected to move fast without breaking things. Key Responsibilities 🔹 Backend Development Scaffold and develop new Node.js services: Catalog, Order, Store, Payment, and Admin BFF Fork and adapt existing Auth, User, Notification, and Customer Support services for the marketplace context Extract and reuse cart logic, Stripe integration, and store management patterns from existing production code Design and implement REST APIs with clear contracts (OpenAPI), proper versioning, authentication, and error handling Build Ordering Platform Partner API integration for user account creation, order sync, and catalog ingestion Implement Redis caching, Kafka event handling, and async processing patterns where appropriate Write database migrations and manage MySQL schemas across services 🔹 Frontend Development Build the customer-facing React/Next.js web application: product browsing, cart, checkout, order confirmation, and account management Build the admin dashboard: order management UI, product toggle controls, customer lookup, and metrics views Implement Stripe payment flows including payment intent creation, form handling, and webhook-driven confirmation Integrate Firebase Auth for authentication flows and Firebase Cloud Messaging for push notifications Ensure mobile-responsive, accessible, and performant UI across all surfaces Manage client-side state using Zustand or TanStack Query as appropriate to the data type 🔹 Infrastructure & Quality Support CI/CD pipeline setup and maintenance using GitHub Actions and AWS services Write unit, integration, and end-to-end tests targeting 80% code coverage on critical paths Participate in code review, architectural discussions, and technical planning sessions Contribute to observability setup: structured logging, alerting, and monitoring configuration Support load testing, performance optimization, and UAT coordination in Phases 4 and 5 Must have 3–5 years of experience as a Full Stack Developer Strong experience with Node.js + React Experience building REST APIs Solid understanding of microservices architecture Experience with SQL databases (MySQL) Familiarity with cloud environments (AWS) Experience with payment integrations (Stripe is a plus) Nice to Have Marketplace or e-commerce experience Kafka or event-driven systems Kubernetes Elasticsearch / OpenSearch Terraform or Infrastructure as Code Contractor scheme 100% Remote