Senior Full Stack Engineer

Motion Recruitment; New York (NY); On-site; USD 120,000 - 180,000; Full time

Job summary

Motion Recruitment seeks a senior software engineer to build AI-powered applications in C#, .NET, and Azure in a New York environment. You will design RAG pipelines, integrate LLMs into production, and deliver backend services with robust guardrails and observability.

Ideal candidates have 5+ years of software engineering, strong Azure expertise, and hands-on experience with API design, tool calling, and AI orchestration.

Qualifications

• 5+ years of software engineering experience.
• Strong C# / .NET and Azure expertise.
• Experience building production APIs and backend services.
• Hands-on with Generative AI / LLM integrations and RAG.
• Familiarity with function calling and tool orchestration.

Responsibilities

• Build AI-powered applications using C#, .NET, and Azure.
• Design and implement RAG pipelines and agentic workflows.
• Integrate LLMs into production systems using APIs and tool orchestration.
• Develop backend services and APIs exposing AI capabilities.
• Implement guardrails, validation, observability, and human-in-the-loop workflows.
• Collaborate with Product, Data, Platform, and AI teams to deliver secure, scalable solutions.

Skills

C#

.NET

Azure

API design

LLM integration

SQL

AI prototyping

Tools

Docker

GitHub Actions

AKS

Azure Functions

Cosmos DB

Job description

About The Role

What You’ll Do

• Build AI-powered applications using C#, .NET, and Azure.
• Design and implement RAG pipelines and agentic workflows.
• Integrate LLMs into production systems using APIs, function calling, and tool orchestration.
• Develop backend services and APIs that expose AI capabilities.
• Implement guardrails, validation logic, observability, and human-in-the-loop workflows.
• Collaborate with Product, Data, Platform, and AI teams to deliver secure and scalable solutions.

Responsibilities

• 5+ years of software engineering experience
• Strong C# / .NET and Azure expertise
• Experience building production APIs and backend services
• Hands-on experience with:
• Generative AI / LLM integrations
• Retrieval-Augmented Generation (RAG)
• Agent workflows
• Prompt engineering
• Function & tool calling
• Experience with SQL, enterprise systems, and cloud-native architectures
• Ability to turn AI prototypes into reliable production applications

Preferred Technologies

• C#, .NET 8+, ASP.NET Core, Azure OpenAI, Azure AI Search, AKS, Azure Functions, Service Bus, Cosmos DB, SQL, Docker, GitHub Actions/Azure DevOps.
• Experience with Semantic Kernel, LangChain, Copilot Studio, Azure AI Foundry, or similar AI orchestration frameworks is a plus.

Posted By: John Driscoll