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Senior, Backend Web Developer Job at Qosina Corp. in Ronkonkoma

Qosina Corp.
Ronkonkoma, NY Full Time
POSTED ON 3/10/2025
AVAILABLE BEFORE 5/24/2025

Job Description

Job Description

Title : Senior Backend Web Developer

FLSA : Exempt

Reports To : Director of Marketing

Position Summary : We are seeking a Senior Backend Web Developer with 7 years of experience in .NET, C#, and enterprise system integration to support and enhance DynamicWeb-based eCommerce websites while leading the transition to WooCommerce as our long-term eCommerce solution.

The ideal candidate has expertise in backend architecture, API development, cloud services (Azure), and integrations with Microsoft Dynamics 365 Finance & Operations (D365 F&O) and Customer Engagement (D365 CE).

Key Responsibilities

Support & Enhance DynamicWeb Websites (Current State)

  • Maintain, troubleshoot, and enhance existing DynamicWeb-based eCommerce websites.
  • Work with DynamicWeb’s backend (ASP.NET, C#) and Razor templates to develop and optimize eCommerce functionality.
  • Support ERP (D365 F&O) and CRM (D365 CE) integrations for order processing, inventory management, and customer accounts.
  • Optimize SQL Server performance and develop custom stored procedures as needed.
  • Ensure security, compliance, and performance of all backend systems.

Lead the Transition to WooCommerce (Future State)

  • Architect and develop custom APIs, Webhooks, and integrations to facilitate the transition from DynamicWeb to WooCommerce.
  • Build and maintain WooCommerce backend functionality, including :
  • Custom plugin development using PHP, MySQL, and WooCommerce APIs.

  • Performance optimizations for high-traffic eCommerce environments.
  • Integration of third-party services (payment gateways, shipping providers, and tax calculation tools).
  • Ensure smooth migration of data (products, orders, customers) from DynamicWeb to WooCommerce.
  • D365 F&O & CE Integration

  • Design and develop APIs and workflows to synchronize customer data, orders, invoices, and inventory between D365 F&O, D365 CE, and WooCommerce.
  • Implement real-time order management, inventory updates, and financial reporting integrations.
  • Work with Power Automate, Logic Apps, and Azure Functions to optimize data flow.
  • Troubleshoot and enhance existing ERP and CRM integrations.
  • Cloud & DevOps

  • Implement CI / CD pipelines, automated testing, and containerized deployments (Docker, Kubernetes).
  • Deploy and maintain backend applications on Azure (App Services, Functions, API Management, Service Bus, SQL Databases).
  • Ensure data security, compliance, and scalability within cloud

    Education / Technical Certifications :

  • Experience with headless eCommerce and API-driven storefronts.
  • Knowledge of GraphQL, gRPC, or WebSockets for real-time data exchanges.
  • Familiarity with serverless architectures (Azure Functions, AWS Lambda).
  • Understanding of DevOps practices, CI / CD, and cloud security best practices.
  • Experience :

  • 7 years of experience in backend web development using .NET (Core / Framework) and C#.
  • Experience working with DynamicWeb eCommerce platform and / or its backend architecture (ASP.NET, Razor, C#).
  • Proficiency in WooCommerce backend development (PHP, MySQL, WordPress APIs, and WooCommerce customization).
  • Strong knowledge of RESTful API development, Webhooks, and microservices architecture.
  • Experience integrating D365 F&O and D365 CE with eCommerce platforms.
  • Expertise in Azure cloud services (Logic Apps, Function Apps, API Management, Azure SQL, Service Bus, etc.).
  • Advanced proficiency in SQL Server, Entity Framework, and relational database design.
  • Experience with OAuth, JWT, and API authentication mechanisms.
  • Strong problem-solving and debugging skills with a focus on scalable architecture.
  • Excellent communication and collaboration skills to work effectively with cross-functional teams.
  • Skillsets :

  • Organizational skills
  • Administrative skills
  • Computer skills
  • Leadership skills
  • Communication Skills
  • Collaboration skills
  • Independent skills
  • Analytica skills
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    Job openings at Qosina Corp.

    Qosina Corp.
    Hired Organization Address Ronkonkoma, NY Full Time
    Job Description Job Description Title : Senior Backend Web Developer FLSA : Exempt Reports To : Director of Marketing Po...
    Qosina Corp.
    Hired Organization Address Ronkonkoma, NY Full Time
    Title: Senior Backend Web Developer FLSA: Exempt Reports To: Director of Marketing Position Summary: We are seeking a Se...

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