.NET Developer

.NET AWSDeveloper w/ OpenSearch/Elasticsearc New York, New York 09/04/2026 Contract Active Job Description: Job Summary The Senior .NET Developer will design and develop scalable, cloud-native applications using C#, .NET Framework, .NET Core, and modern .NET versions. The role requires strong expertise in microservices, REST APIs, event-driven architecture, distributed systems, and AWS services, along with mandatory hands-on experience with OpenSearch or Elasticsearch. The developer will build search-driven applications, optimize search performance, develop cloud integrations, and contribute to AI-powered application capabilities. Generative AI experience is preferred, particularly with LLMs, RAG, AWS Bedrock, Agentic AI, prompt engineering, and vector databases. Required Qualifications

Strong experience with C#, .NET Framework, .NET Core, and .NET 6/7/8. Strong expertise in Microservices Architecture, REST APIs, and Event-Driven Architecture. Hands-on experience with AWS services including Lambda, API Gateway, SQS, SNS, Step Functions, S3, and RDS. Experience designing and developing scalable cloud-native applications. Strong understanding of distributed systems and API integrations. Minimum 2+ years of hands-on experience with OpenSearch and/or Elasticsearch. Experience designing search solutions and developing search integrations. Experience implementing indexing strategies and data ingestion pipelines. Experience with query optimization, performance tuning, and search relevance tuning. Experience building search-driven applications.

Preferred Qualifications

Experience with Large Language Models (LLMs). Experience with Retrieval-Augmented Generation (RAG). Experience with AWS Bedrock. Experience with Agentic AI. Experience with prompt engineering. Experience with vector databases. Experience with Docker and Kubernetes. Experience building AI-powered search and recommendation systems. Experience working in Agile/Scrum environments. AWS certification such as Solutions Architect, Developer, or DevOps Engineer.

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