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Senior .NET developer

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Location:
United States , Jersey City ▼

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

115000.00 USD / Year
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Job Description:

We are looking for a highly skilled Senior .NET Developer to support a major application modernization program involving the migration of existing systems from .NET Framework 4.8 to .NET Core 8 and a database transition from SQL Server to CockroachDB. The ideal candidate will have hands-on experience modernizing enterprise applications, refactoring legacy components, and implementing scalable services.

Job Responsibility:

  • Lead the modernization of applications from .NET Framework 4.8 to .NET Core 8, ensuring improved performance, security, and maintainability
  • Design and develop RESTful Web APIs using .NET Core 8
  • Participate in and contribute to the migration of SQL Server workloads to CockroachDB, including schema transformation, data migration, and performance tuning
  • Refactor legacy code, introduce best practices, and drive engineering standards across the team
  • Collaborate with architects, database engineers, and DevOps teams to ensure seamless modernization
  • Troubleshoot production and lower-environment issues related to APIs, services, and database integrations
  • Participate in Agile ceremonies, code reviews, and technical discussions
  • Document technical workflows, architectural components, and migration steps

Requirements:

  • Primary Skill: .NET Framework 8, .NET Core 8, SQL Server, Rest APIs
  • Secondary: UI – Cockroach DB, Kafka
  • Experience: Minimum 10 years
  • Strong experience with .NET Framework 4.8
  • Hands-on expertise in .NET Core 6/7/8 (preferably .NET 8)
  • Solid experience with Web API development
  • Strong command of SQL Server, including stored procedures, indexing, query tuning
  • Experience upgrading, refactoring, or re-engineering legacy .NET applications
  • Strong problem solving and analytical skills
  • Excellent communication and collaboration abilities
  • Ability to work in fast paced, multi team environments
  • Proactive in identifying risks, blockers, and modernization opportunities

Nice to have:

  • Experience with CockroachDB or any distributed SQL
  • Messaging experience with Kafka or MQ (IBM MQ, RabbitMQ, ActiveMQ etc.)
  • Exposure to distributed systems, microservices, API gateways, or event driven architecture
  • Java development experience
  • Domain experience in Wealth Management or broader BFSI environments
  • Experience working in large-scale modernization / transformation programs
  • Familiarity with containerized deployments (Docker, Kubernetes) and CI/CD pipelines

Additional Information:

Job Posted:
March 21, 2026

Employment Type:
Fulltime
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