Senior .NET Backend & Integration Engineer

The ideal candidate should have a proven track record of writing production-quality code, investigating and resolving complex technical issues, and contributing directly to the delivery of software solutions while also providing architectural guidance when needed. You do not need to perform network-level coding; instead, you will collaborate with DevOps and Network Engineers to guide infrastructure setup, test hybrid connectivity, and troubleshoot cross-network data access issues.

Our client, a Financial company, is looking for a Senior .NET Backend & Integration Engineer for their Jersey City, NJ location.
 
Responsibilities:

• API Development & Data Integration: Design, code, and optimize secure multi-tenant APIs using C# and .NET Core that dynamically query and aggregate data across Amazon DynamoDB, PostgreSQL, and varied external client data sources.
• Technical Guidance: Provide clear architectural requirements to DevOps and Network Engineering teams regarding application infrastructure needs.
• Integration Testing: Collaborate with network and infrastructure peers to validate secure backend connections to external client data centers.
• Cross-Network Troubleshooting: Diagnose, isolate, and debug end-to-end data routing issues between the AWS-hosted API and remote external databases.

 
Requirements:

• This is a hands-on backend engineering role for a developer who will build and deploy a multi-tenant SaaS application on AWS.
• You will write high-performance APIs using C# and .NET that communicate with DynamoDB, PostgreSQL, and various external client data sources.
• You do not need to perform network-level coding; instead, you will collaborate with DevOps and Network Engineers to guide infrastructure setup, test hybrid connectivity, and troubleshoot cross-network data access issues.
• Languages & Frameworks: Expert-level C#, .NET Core
• Data Stores & Integration: Deep hands-on experience with Amazon DynamoDB, PostgreSQL (Entity Framework Core or Dapper), and writing abstract data access layers to query heterogeneous external data sources.
• SaaS Multi-Tenancy: Real-world experience implementing application-level tenant isolation, data partitioning, and tenant context middleware.
• Hybrid Networking Concepts: Solid conceptual understanding of VPCs, AWS PrivateLink, and firewalls to effectively guide networking peers.
• DevOps Liaison: Basic familiarity with cloud infrastructure deployment (Terraform, AWS CDK) to streamline pipeline integrations.
• Experience: 5+ years of active, hands-on backend development building distributed systems on AWS.
• Communication: Strong collaborative skills to translate complex application data requirements into actionable tasks for infrastructure teams.
• Wanted to clarify that this is an Architect/Senior Developer role that requires strong hands-on coding and troubleshooting experience.
• The position is not focused solely on solution design or high-level architecture; it involves active participation in development, debugging, problem resolution, and technical implementation.
• The ideal candidate should have a proven track record of writing production-quality code, investigating and resolving complex technical issues, and contributing directly to the delivery of software solutions while also providing architectural guidance when needed.

 
Why Should You Apply?

• Health Benefits
• Referral Program
• Excellent growth and advancement opportunities