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# Integration Developer

- **Company:** NS IT Solutions
- **Location:** Bethesda, MD, United States
- **Experience:** Starter
- **Salary:** $104,000.0 - $124,800.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Authentication Protocols, Microsoft Azure, C Sharp (Programming Language), Relational Databases, JSON, OAuth, OpenID, Openid Connect, Simple Object Access Protocol (SOAP), SQL Databases, Extensible Markup Language (XML), Backend, Restful APIs, Webhooks, Serverless Computing
- **Published:** July 19, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=e419d3ef2d2a3ac2

## About the Role

* Simphony STS Gen 2: 1-2+ years of hands-on experience specifically working with modern Simphony STS Gen 2 REST APIs.
 * POS Domain Knowledge: Deep understanding of Simphony hierarchy, Revenue Centers, Menu Item Classes, and multi-tender configurations.
 * Core Tech Stack: Professional proficiency in C#, Azure Functions (serverless architecture), and relational database design using SQL.
 * Protocols: Mastery of JSON, RESTful architecture, and OIDC token management.

Nice-to-Have:

 * Experience migrating legacy STS Gen 1 (SOAP/XML) interfaces to Gen 2 (REST/JSON).
 * Experience deploying scalable backend systems within the Microsoft Azure ecosystem.

## Description

* API Integration: Develop and optimize stateless end-to-end checkout, check management, and payment flows using the STS Gen 2 Checks API.
 * Menu Syncing: Build automated syncs using Configuration and Organizations APIs to handle multi-level pricing, condiment rules, and real-time item availability.
 * Security & Auth: Securely manage connectivity using OpenID Connect (OIDC) authentication protocols (OAuth2/PKCE).
 * Webhooks: Build and maintain asynchronous handlers for the STS Gen 2 Webhook/Notifications API for real-time order tracking.


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