Senior Full Stack Engineer

Motion Recruitment Partners, LLC; New York (NY); On-site; USD 120,000 - 160,000; Full time

Job summary

Motion Recruitment Partners, LLC is seeking an experienced software engineer to build AI-powered applications in a production environment. You will leverage C#, .NET, and Azure to design scalable APIs and backend services, while implementing RAG pipelines and agentic workflows.

The role requires hands-on experience with generative AI integrations, function calling, and tool orchestration, with a focus on secure, observable, and production-ready systems. Collaborative cross-team work is essential.

Qualifications

• 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) implementations.
• Agent workflows and function calling experience.

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, 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.

Skills

C# / .NET

Azure

APIs

Backend services

LLM integration

SQL

Cloud-native architectures

Prompt engineering

Tool calling

Tools

Azure OpenAI

Azure AI Search

AKS

Azure Functions

Cosmos DB

SQL

Docker

GitHub Actions

Azure DevOps

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

Qualifications

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.