Software Engineer

1 week geleden

Den Haag, Zuid-Holland, Nederland Salt Voltijd € 45.000 - € 90.000 per jaar

Salt is currently hiring a Software Engineer for a client of ours in Den Haag.

We're looking for a hands-on Software Engineer / Developer (contract) to deliver a Shopify integration and a TypeScript-based PERN platform (PostgreSQL, , ).

You'll take ownership of both architecture and implementation, building reliable integrations, robust data flows, and high-quality, production-ready features. Working closely with product and engineering stakeholders, you'll help bring this project from concept to delivery on an ambitious timeline.

What You'll Do


• Develop and deliver a Shopify-connected PERN platform from end to end.


• Implement Shopify Admin and Storefront API integrations, including webhooks, OAuth, and data synchronization.


• Design and manage PostgreSQL data models and APIs in


• Build front-end components and ensure smooth, modern UI performance.


• Establish CI/CD pipelines, automate testing, and ensure deployment readiness.


• Maintain high standards of code quality, documentation, and reliability.

What You Bring


• Strong experience in TypeScript, (Express), and


• Solid hands-on background with Shopify app development (Admin & Storefront APIs, OAuth, webhooks).


• Proven ability to design scalable PostgreSQL schemas and optimize data flow.


• Familiarity with CI/CD, Docker, and cloud deployment practices.


• Pragmatic, delivery-focused mindset — you ship clean, maintainable code fast.

Engagement Details


• Start: ASAP


• Duration: 4–12 weeks (contract) - part time also possible


• Location: Hybrid : office / Remote - some days onsite in Den Haag area

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