Remote Freelance _ Lead Shopify POS Developer

• Company Name: WillWare Technologies
• Location: Remote
• Employment type: Contract / Freelance
• Experience: Minimum 7 years in IT, 3 years Shopify POSUI, 3 years React/TypeScript. Must have Shopify POS experience, not Shopify Ecommerce.

Job Description

We are looking for a skilled lead developer with proven experience in the Shopify Point of Sale (POS) system. This role requires strong technical expertise, a deep understanding of the Shopify ecosystem, and domain expertise in retail store operations.

Responsibilities

• Design, build, and lead delivery of ShopifyPOSUI Extensions for multiple retail use cases.
• Develop POS experiences using ShopifyPOSUI Extension components with React/TypeScript.
• Migrate older POSUI extension versions to the latest APIs, components, breaking changes, and rollout plan.
• Integrate with Shopify Admin GraphQL/REST APIs, Webhooks, App Bridge, and (optionally) Remix/Node.js backends.
• Set up CI/CD to build, test, and deploy via the Shopify Partners Dashboard.
• Configure Smart Grid to surface the right extensions by store/location/role.
• Actively monitor Shopify POS app release notes and POSUI Extensions changelogs, assess impact, and collaborate with Shopify Plus Support on issues or changes.
• Troubleshoot, profile, and debug production issues, drive RCA and prevention.
• Build/modify integrations with third‑party systems.
• Collaborate with product owners on requirements and technical specs.
• Partner with integration specialists on enterprise data flows and with RFID specialists on store inventory operations.
• Provide technical support for new‑store openings and international expansion.
• Support testing and deployments across dev/QA/stage/prod; use feature flags/rollbacks.
• Diagnose issues with POS peripherals and integrate new hardware.
• Mentor developers; enforce code quality, observability, and security best practices.

Qualifications

• 10 years total IT experience, including 3+ years in POS/E‑commerce for large retailers (>$500M revenue).
• 3–5 years hands‑on Shopify POS development (POSUI Extensions, App Bridge, Admin APIs).
• Strong proficiency in HTML5, CSS3, JavaScript (ES6+), React, TypeScript.
• Solid understanding of Liquid templating language and Polaris Components for Admin experiences.
• Proven integrations with payment gateways, tax engines, loyalty/fraud platforms, ERP, Inventory, OMS.
• Experience with REST and GraphQL; working knowledge of Shopify Admin GraphQL API, Webhooks, AWS EventBridge.
• Ability to design and develop custom Shopify apps for specific user scenarios.
• Proficient with Git and collaborative workflows (PRs, code reviews).
• Strong debugging skills, attention to detail, and ownership mindset.
• Excellent communication and time‑management; comfortable leading cross‑functional initiatives.

Senior Level

Mid‑Senior level