C# / .NET Developer (Shopify / Middleware Focus)

About the role

Do you enjoy building scalable backend systems that power seamless digital experiences? Do you thrive in integration-heavy environments where performance, data flow, and reliability matter? Do you like working behind the scenes to ensure platforms talk to each other efficiently and securely?

As a C# /.NET Developer, you will play a key role in expanding and supporting a client’s middleware layer that integrates Shopify and other systems. You may also contribute to a mobile app backend running in a Platform-as-a-Service (PaaS) environment, as the existing provider transitions off the account.

This role requires strong backend engineering skills, experience with APIs and integrations, and the ability to work independently in a fast-paced environment.

Responsibilities

• Design, develop, and maintain middleware applications using C# and.NET.
• Build and maintain integrations between Shopify and external systems.
• Use GraphQL to query and manipulate data from Shopify APIs.
• Enhance and support existing middleware services currently in production.
• Collaborate with cross-functional teams to define, design, and implement scalable solutions.
• Support and potentially transition ownership of a mobile app backend (PaaS-based).
• Optimize application performance, scalability, and reliability.
• Troubleshoot and resolve complex backend and integration issues.
• Write clean, maintainable, and well-documented code.
• Participate in code reviews and follow engineering best practices.

Requirements

• Experience: Minimum of 4–5 years of hands-on experience with C# and.NET development.
• Backend Development: Strong experience building APIs, services, and middleware architectures.
• Shopify (Preferred): Experience working with Shopify APIs. Direct Shopify development experience is ideal.
• GraphQL: Solid experience using GraphQL to query and manipulate data (Shopify GraphQL Admin API experience is a plus).
• Cloud / PaaS: Experience working in cloud-based or PaaS environments.
• Integration Experience: Proven experience integrating third-party systems and APIs.
• Problem-Solving: Strong analytical and troubleshooting skills with the ability to resolve complex backend issues.
• Communication: Strong written and verbal communication skills. Ability to work effectively with client stakeholders and distributed teams.
• Collaboration: Experience working in an agile development environment.

Remote Work

This position qualifies for remote work anywhere in the United States.

• About Company ---

For full-time employees, we offer

• 35- or 40-hour work weeks
• 100% remote work
• Flexible schedules
• Competitive compensation
• Performance-based bonus opportunities

Medical, dental, vision, and disability insurance

• HSA plan options
• Simple IRA with 3% company match
• Company-paid life insurance
• Paid holidays and paid time off
• Paid maternity and paternity leave
• Paid bereavement and natural disaster leave
• Company-provided laptop

Note: This role is structured as a contract engagement, with potential for conversion to full-time employment. Full benefits apply upon full-time conversion.