Senior Full Stack Developer

This role does not offer Visa sponsorship! And only for people located in the Netherlands Join a rapidly scaling international tech company as a Full Stack Developer with a backend focus. Help build smart, scalable integrations and custom middleware for well-known global clients in e-commerce and B2B. Company profile This international software agency specializes in solving complex e-commerce and integration challenges. The company partners with high-volume B2B brands across retail, manufacturing, and distribution including names like Universal Music Group and Estée Lauder. They are known for delivering backend-heavy, scalable Shopify Plus solutions and robust integrations with systems like ERP, WMS, POS, and accounting platforms. This includes financial syncs, real-time data pipelines, and high-SKU environments. Engineering teams are located in The Netherlands (Rijswijk HQ), Canada (Vancouver & Toronto), and Vietnam, working closely across time zones. The company’s culture is pragmatic, fast-moving, and highly technical. Developers are encouraged to lead initiatives, challenge assumptions, and bring in new tools or approaches. Recent projects include: ERP integrations (e.g. NetSuite, SAP) with Shopify PlusReal-time product and inventory syncs for multi-region storefrontsFinancial reconciliation tooling for accounting platformsBuilding internal developer tools and shared NPM librariesOnboarding and mentoring engineering talent in new regions Job description Build and maintain backend integrations, microservices, and private appsWork with TypeScript, Node.js, PostgreSQL, GraphQL, and REST APIsIntegrate third-party platforms like ERPs, WMS, and POS systemsContribute to a modern monorepo setup and internal tooling(Optional) Support frontend with React, Shopify Polaris, and RemixCollaborate with global teams using GitHub, Linear, and NotionParticipate in sprints, scoping, code reviews, and team discussions Job requirements 3+ years of experience as a backend or full stack developerStrong in TypeScript and Node.jsSolid knowledge of PostgreSQL, REST APIs, GraphQLExperience working with scalable integrations and backend architectureBonus: experience with Shopify or other e-commerce platformsProactive mindset and a collaborative working styleComfortable working in a fast-paced, remote-friendly engineering culture Benefits Salary up to €85.000/year (based on 40 hours)Hybrid work: 2/3 days a week at Rijswijk office (Friday = fixed team day)Possibility to work 32 hours/weekPerformance-based bonuses and incentivesTravel opportunities to Canada and international collaborationStrong mentorship and clear technical growth paths Sounds interesting? Email your resume to g.vanschagen@haystackpeople.nl or apply through the website of Haystack People