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.NET Developer (Newark)

JSR Tech Consulting, Newark, NJ, United States


Senior Backend .NET Developer
Contract Position with a Major Investment Firm
Location:

Newark, NJ – Hybrid (3 days onsite: Tuesday, Wednesday, Thursday preferred)
Remote candidates may be considered
C2C candidates are welcome
Pay rate:

Up to $70hr on w2 and $80hr on C2C

We are seeking a Senior Backend .NET Developer with strong experience building scalable backend applications and cloud-based services in AWS environments. This role is focused on backend development and requires deep expertise in C#, .NET Core, API development, and cloud infrastructure. Experience working in regulated or financial services environments is a plus.

Responsibilities
Develop, enhance, and maintain backend applications using C#, .NET Core, and ASP.NET Core
Design, build, and support RESTful APIs and microservices architectures
Deploy, manage, and optimize applications running on AWS EC2 environments
Work with AWS services including S3, RDS, CloudWatch, IAM, and Load Balancers
Collaborate with front-end developers integrating applications with React-based interfaces
Participate in architecture discussions, technical design sessions, and code reviews
Troubleshoot and resolve complex technical issues across the application stack
Ensure applications meet security, compliance, scalability, and performance standards
Contribute to CI/CD automation and deployment processes

Required Qualifications
10+ years of backend development experience
Strong expertise with C#, .NET Core, and ASP.NET Core
Strong understanding of backend architecture principles and design patterns
Hands-on experience deploying and managing applications in AWS EC2 environments
Experience working with relational databases such as SQL Server or PostgreSQL
Strong experience with Entity Framework Core
Experience with Docker and CI/CD pipelines
Strong troubleshooting, debugging, and performance optimization skills

Preferred Qualifications
Experience working in financial services or highly regulated environments
Basic to intermediate React experience
Experience with AWS ECS, EKS, or Lambda
Experience with Infrastructure as Code tools such as Terraform or CloudFormation
Experience with event-driven architectures using SNS, SQS, or Kafka
Experience with automated testing frameworks

Additional Information
This is primarily a backend-focused engineering role
React knowledge is beneficial but not required
Candidates with experience building secure enterprise applications are highly preferred
Strong collaboration and communication skills are important for working across cross-functional engineering teams