Senior Software Engineer (Shopify)

💰 Salary: 21,500-28,700 PLN/Month

💻 Warsaw, Poland (Hybrid - 3 days in office, 2 days remote)

🕦 Full-time

☑️ B2B or CoE

We’re looking for a Senior Software Engineer to join a fast-growing international tech company focused on building modern, data-driven platforms that power digital transformation in the financial and enterprise sectors.

Requirements:

• 5+ years of experience in e-commerce architecture, technical consulting, or a comparable senior level role, with a minimum of 3 years focused on the Shopify ecosystem.

• Strong hands-on experience with the Shopify platform, particularly Shopify Plus, including admin capabilities, Liquid templating, and the broader app ecosystem.

• Proven experience building custom Shopify applications, including advanced customizations using Shopify Functions and Checkout UI extensions.

• Solid understanding of headless Shopify architectures, with experience in Hydrogen and Oxygen implementations.

• Hands-on experience working with Microsoft Entity Framework.

• experience working with Shopify APIs, including REST and GraphQL, along with strong knowledge of modern web technologies such as HTML, CSS, JavaScript and TypeScript.

• Demonstrated ability to design and deliver integrations with enterprise systems such as ERP, OMS, and PIM.

Nice to have:

• Previous experience leading or contributing to re platforming projects from legacy systems.

• Familiarity with backend technologies such as Node.js and Ruby.

• Shopify certifications or other relevant e-commerce platform certifications.

Key Responsibilities:

• Design and document end to end technical architectures for both new and existing Shopify (primarily Shopify Plus) stores, covering storefront implementation (headless or theme based), backend services, integration strategy, and security.

• Develop, customize, and maintain high quality Shopify themes using HTML5, Liquid, CSS3/SCSS, along with JavaScript and TypeScript.

• Implement and design complex integrations between Shopify and core enterprise platforms such as CRM, CDP, WMS, PIM, OMS, and ERP, utilizing GraphQL and REST APIs.

• Develop and manage custom Shopify applications, delivering advanced capabilities through Shopify Functions and Checkout Extensibility to support specific client requirements.

• Collaborate closely with the Sales team to support technical evaluations, define solution scope, estimate effort, and deliver clear, compelling technical presentations to clients.

• Provide technical guidance to stakeholders and engineering teams, advising on Shopify solutions, architecture decisions, and industry best practices.