Middleware Focus)

DemandPDX

6h•Remote

About The Position

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.

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.

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.