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. in Jersey City, NJ, seeks a Senior Multi-Tenant .NET Backend & Integration Engineer to build high-performance multi-tenant APIs on AWS.

You will implement data access to DynamoDB, PostgreSQL, and external client sources, while guiding infrastructure and cross-network integration. This hands-on role collaborates with DevOps and network teams to ensure secure, scalable connectivity, and requires deep .NET Core experience, ORM skills, and customer data integration across heterogeneous

Qualifications

• Experience with DynamoDB and PostgreSQL, plus writing data access layers for external sources.
• Real-world SaaS multi-tenancy implementation, including tenant isolation and context middleware.
• Understanding of VPCs, AWS PrivateLink, and firewall concepts for guided networking.
• Familiarity with cloud deployment tools (Terraform, AWS CDK) to streamline pipelines.

Responsibilities

• Develop and optimize multi-tenant APIs using C# and .NET Core that query diverse data sources.
• Provide architectural guidance to DevOps and Network Engineering teams for infrastructure needs.
• Collaborate on integration testing to verify secure backend connections to external data centers.
• Diagnose cross-network data routing issues between AWS-hosted APIs and remote databases.

Skills

DynamoDB

PostgreSQL

C# / .NET Core

EF Core / Dapper

SaaS multi-tenancy

Hybrid networking concepts

DevOps liaison

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.