Remote Senior Full-Stack Developer - eCommerce Backends

McFadyen Digital; Vienna (VA); On-site; USD 110,000 - 170,000; Full time

Job summary

McFadyen Digital is seeking a Senior Full-Stack Developer with a strong backend focus for a short-term, fully remote engagement. You will design and build scalable backend services on commercetools and integrate Mirakl dropship flows, delivering production-grade APIs and integrations within a tight timeline.

You will work across the backend and contribute frontend work (React/TypeScript) as needed, collaborating with architects and product teams to translate requirements into durable solutions.

Qualifications

• 6+ years of professional software engineering experience, with a primary focus on backend development (Node.js and/or Java) in production eCommerce environments.
• Hands-on experience building on commercetools (APIs, projects, extensions, subscriptions, and composable/headless commerce patterns).
• Practical experience implementing Mirakl — especially the dropship model — including seller/catalog/offer ingestion and order and shipment workflows.
• Strong integration expertise: REST and GraphQL APIs, webhooks, event-driven architecture, and connecting commerce platforms to OMS/ERP/PIM and payment/shipping providers.
• Full-stack capability with frontend proficiency (React, TypeScript, JavaScript) to contribute to UI work when needed.

Responsibilities

• Design, build, and maintain scalable backend services and APIs on commercetools to power catalog, cart, checkout, and order flows in a headless, composable architecture.
• Implement and configure Mirakl dropship capabilities — seller onboarding, offer and catalog ingestion, order routing, and shipment/tracking workflows — and integrate them with commercetools and downstream systems.
• Develop robust, secure integrations between commercetools, Mirakl, and third-party systems (OMS, ERP, PIM, payment, and shipping providers) using REST, GraphQL, webhooks, and event-driven patterns.
• Deliver production-ready code on an aggressive project timeline, including automated tests, error handling, logging, and documentation suitable for handoff at the end of the engagement.
• Collaborate with architects, product, and frontend engineers to translate requirements into technical solutions and contribute frontend work (React/Node) where the project requires it.

Skills

Backend development

Commercetools experience

Mirakl dropship

API integration

Frontend capability (React/TypeScript)

Education

Bachelor’s degree in Computer Science or related field

Tools

Docker

Kubernetes

AWS

Azure

GCP

Job description

McFadyen Digital is seeking a Senior Full-Stack Developer with a strong backend focus for a short-term, fully remote engagement. You will design and build scalable backend services on commercetools and integrate Mirakl dropship flows, delivering production-grade APIs and integrations within a tight timeline.

You will work across the backend and contribute frontend work (React/TypeScript) as needed, collaborating with architects and product teams to translate requirements into durable solutions.