.NET Developer

Senior Backend .NET DeveloperContract Position with a Major Investment FirmLocation: Newark, NJ - Hybrid (3 days onsite: Tuesday, Wednesday, Thursday preferred)Remote candidates may be consideredC2C candidates are welcomePay rate: Up to $70hr on w2 and $80hr on C2CWe 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.ResponsibilitiesDevelop, enhance, and maintain backend applications using C#, .NET Core, and CoreDesign, build, and support RESTful APIs and microservices architecturesDeploy, manage, and optimize applications running on AWS EC2 environmentsWork with AWS services including S3, RDS, CloudWatch, IAM, and Load BalancersCollaborate with front-end developers integrating applications with React-based interfacesParticipate in architecture discussions, technical design sessions, and code reviewsTroubleshoot and resolve complex technical issues across the application stackEnsure applications meet security, compliance, scalability, and performance standardsContribute to CI/CD automation and deployment processesRequired Qualifications10+ years of backend development experienceStrong expertise with C#, .NET Core, and CoreStrong understanding of backend architecture principles and design patternsHands-on experience deploying and managing applications in AWS EC2 environmentsExperience working with relational databases such as SQL Server or PostgreSQLStrong experience with Entity Framework CoreExperience with Docker and CI/CD pipelinesStrong troubleshooting, debugging, and performance optimization skillsPreferred QualificationsExperience working in financial services or highly regulated environmentsBasic to intermediate React experienceExperience with AWS ECS, EKS, or LambdaExperience with Infrastructure as Code tools such as Terraform or CloudFormationExperience with event-driven architectures using SNS, SQS, or KafkaExperience with automated testing frameworksAdditional InformationThis is primarily a backend-focused engineering roleReact knowledge is beneficial but not requiredCandidates with experience building secure enterprise applications are highly preferredStrong collaboration and communication skills are important for working across cross-functional engineering teams

Created: 2026-05-09