Senior Multi-Tenant .NET Backend & Integration Engineer

Tekgence Inc; Jersey City (NJ); On-site; USD 120,000 - 180,000; Full time

Job summary

Tekgence Inc. seeks a Senior Multi-Tenant .NET Backend & Integration Engineer to build high-performance APIs in C# and .NET Core on AWS. You’ll design secure data flows across DynamoDB, PostgreSQL, and external data sources while guiding infrastructure with DevOps partners.

You will collaborate to define architecture, implement tenant isolation, and optimize cross-network data access, leveraging Terraform and AWS CDK to streamline deployments.

Qualifications

• 5+ years of active backend development building distributed systems on AWS.
• Ability to translate complex data requirements into actionable tasks for infrastructure teams.
• Experience designing multi-tenant architectures with tenant isolation and data partitioning.

Responsibilities

• API Development & Data Integration: Design and optimize multi-tenant APIs using C# and .NET Core that query data across DynamoDB and PostgreSQL.
• Technical Guidance: Provide architectural requirements to DevOps and Network teams for infrastructure needs.
• Integration Testing: Collaborate to validate secure backend connections to external data centers.
• Cross-Network Troubleshooting: Diagnose and resolve data routing issues between AWS-hosted APIs and external databases.

Skills

C# / .NET

AWS

DynamoDB

PostgreSQL

Entity Framework Core or Dapper

Multi-tenant SaaS

API Development

Terraform / AWS CDK

Tools

Terraform

AWS CDK

Job description

Job Profile: Senior Multi-Tenant .NET Backend & Integration Engineer

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.

Core 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.

Required Technical Skills

• 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.

Qualifications

• 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.