Senior Backend Engineer for AI & LLM Systems (Hybrid NYC)

Pyyne Digital; New York (NY); Hybrid; USD 140,000 - 210,000; Full time

Benefits offered by this job

Hybrid work in NYC (3 days/wk)

Career development opportunities

401(k) with match

Healthcare plan with Vision and Dental

Job summary

Pyyne is seeking a Sr. Backend Engineer with deep Python expertise and hands-on experience with LLM-based systems to join our New York office as a consultant.

This high-impact role helps build our Applied AI services and deliver real business value to clients. You will build the backend of an AI-powered solution for a private equity client, design multi-step agent workflows, and develop data ingestion pipelines.

Qualifications

• 3+ years of strong Python backend engineering (FastAPI, SQL) with AI systems experience.
• Production experience building with LLMs and agentic systems, including multi-step workflows.
• Understanding of Generative AI space to compare models and frameworks and guide LLM usage.
• Stakeholder management with technical and non-technical leaders, client-facing or consulting experience.
• Experience in structured, production environments.

Responsibilities

• Build and extend the Python backend of an AI-powered solution for a private equity client.
• Integrate LLMs and agentic workflows into backend services, including multi-step agent design.
• Build and optimize data ingestion pipelines bringing external data into the application layer.
• Collaborate with a small cross-functional team to ship features end-to-end.
• Meet production standards for reliability, performance, and data integrity.
• Translate business needs into technical designs and explain tradeoffs clearly.
• Present work with confidence and earn client trust through clear communication.
• Take ownership of backend delivery with minimal oversight and contribute to architecture.

Tools

FastAPI

SQL

Python

LLMs

Agentic workflows

Job description

Pyyne is seeking a Sr. Backend Engineer with deep Python expertise and hands-on experience with LLM-based systems to join our New York office as a consultant.

This high-impact role helps build our Applied AI services and deliver real business value to clients. You will build the backend of an AI-powered solution for a private equity client, design multi-step agent workflows, and develop data ingestion pipelines.