Senior Full-Stack Engineer

2 weeks ago

Romania ITTeams Full time €40,000 - €120,000 per year

IT Teams is a Romanian company specialized in software outsourcing and remote staffing. We aim to assemble passionate experts to help companies and startups achieve success. We deliver the perfect combination of technical skills, methodology and high speed delivery techniques to help startups and established companies extend their development teams.

Tasks

Client's ecommerce platform is a custom headless Shopify architecture built with React Router v7 (formerly Remix), , and TypeScript, organized in a Turborepo monorepo and deployed on Vercel. The system integrates Shopify, Builder. io, and a network of custom Node-based microservices that coordinate data from Salsify (PIM), HubSpot, and internal event pipelines. Multiple custom Shopify apps (admin, checkout UI extensions, functions) extend core capabilities, including advanced bundling logic and dynamic draft order workflows.

Requirements
  • Deep Shopify experience — building against Admin, Storefront, Functions, and Checkout UI Extension APIs; understanding of platform constraints and best practices for scalable workarounds
  • Advanced React / Remix / proficiency, with a strong understanding of SSR, routing, and composable architecture
  • Full-stack TypeScript expertise, including typing complex data models and designing maintainable shared packages across a monorepo
  • Microservices & API integration — designing, deploying, and consuming Node-based services to orchestrate data and events between systems (Shopify, Salsify, HubSpot, Builder. io)
  • Strong systems-thinking mindset — able to reason about architecture, data flow, and the impact of design decisions across services
  • Performance and reliability focus — experience with caching, code splitting, async lifecycles, and observability (Sentry)
  • Proficiency with CI/CD pipelines and GitHub automation (linting, tests, deployments)
  • Comfortable in modern headless commerce environments — familiarity with Builder. io, Vercel, and related tooling
  • Bonus: Experience with event-driven systems, AI-assisted development (Cursor, Claude, ChatGPT, etc), or eCommerce data workflows (PIM/ERP)

The ideal candidate

  • Senior engineers with hands-on experience pushing the limits of Shopify's ecosystem, who can architect, implement, and maintain large-scale integrations with clear thinking and precision. Someone who thrives in a modern TypeScript-first, microservices-driven environment and can make pragmatic, scalable technical decisions.

Wondering what it is like to work at a fast growing company while the team is still small? Want to make an impact in building a product that is changing an entire industry? That's the kind of opportunity we're offering.

Effort: Remote

Location: Romania

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