Senior Multi-Tenant .NET Backend & Integration Engineer

Cynet Systems • Jersey City, NJ

2d

About The Position

We are seeking an expert-level Senior Multi-Tenant .NET Backend & Integration Engineer with deep hands-on experience in C#, .NET Core, and various database technologies. The role involves designing, coding, and optimizing secure multi-tenant APIs, collaborating with DevOps and Network Engineering teams, and debugging data routing issues. This position requires a strong understanding of cloud infrastructure, particularly AWS, and the ability to work effectively with distributed systems.

Requirements

• Expert-level C#, .NET Core.
• Deep hands-on experience with Amazon DynamoDB, PostgreSQL (Entity Framework Core or Dapper).
• Experience writing abstract data access layers to query heterogeneous external data sources.
• Real-world experience implementing application-level tenant isolation, data partitioning, and tenant context middleware.
• Solid conceptual understanding of VPCs, AWS PrivateLink, and firewalls to effectively guide networking peers.
• Basic familiarity with cloud infrastructure deployment (Terraform, AWS CDK) to streamline pipeline integrations.
• 5+ years of active, hands-on backend development building distributed systems on AWS.
• Strong verbal and written communication skills.
• Excellent communication and presentation skills.
• Ability to communicate effectively with stakeholders.

Responsibilities

• 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.
• Provide clear architectural requirements to DevOps and Network Engineering teams regarding application infrastructure needs.
• Collaborate with network and infrastructure peers to validate secure backend connections to external client data centers.
• Diagnose, isolate, and debug end-to-end data routing issues between the AWS-hosted API and remote external databases.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed