Senior Backend Engineer (.NET) — Costa Rica Remote
Software MindBuild .NET microservices on AWS for Software Mind’s white-label B2B e-commerce platform, connecting Shopify with marketplace, payment, and tax systems.
Open
Software Mind is a technology company delivering software development and digital transformation services for organizations across artificial intelligence, SaaS, and telecommunications. Its work includes custom software, mobile applications, cloud consulting, and AI-focused solutions designed around the needs of clients in sectors such as financial services, telecom, biotech, and media. With a team of more than 1,000 employees, Software Mind supports technology initiatives and digital growth for businesses operating across global markets.
Senior Full Stack Engineer, .NET and React
Build Shopify, .NET, and React services for a US promotional products e-commerce company, connecting carriers, storefronts, and order management systems.
Description
- Build and maintain Shopify storefront integrations, including Admin API, webhooks, and checkout connections.
- Create React interfaces for administration and configuration.
- Design and implement .NET 8 Web API endpoints and services.
- Connect third-party APIs through clear adapter layers.
- Build event-driven messaging with SNS/SQS, including idempotency and retry handling.
- Keep customer-facing experiences fast and reliable.
- Coordinate API contracts with the client’s storefront partner.
- Write unit, integration, and component tests.
- Document APIs with OpenAPI and integration flows in Confluence.
- Take part in code reviews, sprint ceremonies, and technical sessions with the client.
Requirements
- At least five years of full-stack development experience with strong C#/.NET (ASP.NET Core, .NET 6+) and React with TypeScript.
- Hands-on Shopify integration experience, including Admin API (GraphQL/REST), webhooks, and checkout integration.
- Strong REST API design skills and experience with OpenAPI/Swagger.
- Experience integrating third-party APIs, including authentication, rate limits, retries, and error handling.
- Working knowledge of AWS Lambda, SQS/SNS, and ECS.
- Familiarity with clean architecture, dependency injection, and DDD/CQRS concepts.
- A disciplined approach to testing across backend and frontend systems.
- Experience with Docker and CI/CD.
- Excellent written and spoken English for daily client communication.
- Shipping or carrier API experience is a plus.
- Shopify Plus, Hydrogen, or headless commerce storefront experience is a plus.
- Experience building admin interfaces with component libraries such as Polaris or MUI is a plus.
- Retail, e-commerce, or promotional products domain knowledge is a plus.
Benefits
- Remote work is available to employees.
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