Senior .NET Backend & Cloud Engineer

Seneca Resources Company, LLC; New York (NY); Hybrid; USD 110,000 - 121,000; Full time

Job summary

Seneca Resources is seeking a Senior .NET Backend & Cloud Software Engineer in New York, NY. This contract role blends backend development with cloud engineering to deliver mission-critical E-Citations platforms for a major public sector client.

You will design scalable C#/.NET systems, build secure APIs, and work across Azure/AWS/GCP, Kubernetes, and CI/CD tooling to ensure reliable production systems. This is a highly visible, hands-on position in a hybrid setup with strong collaboration

Qualifications

• 6+ years of professional software engineering experience building enterprise applications.
• Strong hands-on experience with C#, .NET, ASP.NET Core.
• Experience designing and developing cloud-native backend services and APIs.
• Hands-on experience with at least one major cloud platform (Azure, AWS, or GCP).
• Experience with containerization and orchestration technologies.
• Strong knowledge of REST APIs, enterprise integration patterns, and distributed systems.
• Experience with SQL Server, PostgreSQL, Azure SQL, NoSQL databases.
• Experience building ETL/ELT pipelines and large-scale data integrations.
• Knowledge of OAuth 2.0, OIDC, JWT, RBAC/IAM, encryption, and Secure SDLC practices.
• Experience with DevOps, Infrastructure-as-Code, CI/CD, automated testing, and observability tools.

Responsibilities

• Design, develop, deploy, and support modern backend services using C#, .NET, and ASP.NET Core.
• Build scalable, high-performance applications supporting critical business workflows.
• Develop secure RESTful and SOAP APIs that integrate mobile, cloud, enterprise, and legacy platforms.
• Participate in architecture, technical design, code reviews, testing, releases, and production support.
• Write clean, maintainable, and well-tested code following software engineering best practices.

Skills

C#

.NET

ASP.NET Core

REST APIs

Cloud platforms

Kubernetes

SQL Server

NoSQL

OAuth 2.0

DevOps

Tools

Azure

AWS

GCP

Job description

Seneca Resources is seeking a Senior .NET Backend & Cloud Software Engineer in New York, NY. This contract role blends backend development with cloud engineering to deliver mission-critical E-Citations platforms for a major public sector client.

You will design scalable C#/.NET systems, build secure APIs, and work across Azure/AWS/GCP, Kubernetes, and CI/CD tooling to ensure reliable production systems. This is a highly visible, hands-on position in a hybrid setup with strong collaboration