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.

Requirements

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

Benefits

• Contractor scheme
• 100% Remote