Sr Gen AI Engineer - NY/NJ

Photon Interactive UK Ltd

NJ

JOB DETAILS
SKILLS
Application Programming Interface (API), Artificial Intelligence (AI), Compensation and Benefits, Continuous Deployment/Delivery, Continuous Integration, Deep Learning, Docker, Machine Learning, Modeling Languages, Open Source, Performance Tuning/Optimization, Production Control, Production Systems, Python Programming/Scripting Language, Sales Pipeline, Security Monitoring, Software Engineering, Systems Maintenance
LOCATION
NJ
POSTED
30+ days ago

Role Summary:

We are seeking a Generative AI Engineer to build, optimize, and scale production-ready AI applications. You will design complex multi-agent systems, implement advanced RAG pipelines, and manage the deployment of both frontier and local LLMs. The ideal candidate blends deep machine learning expertise with modern software engineering practices.

Technical Stack:

LLMs: • Gemini • OpenAI • Claude • Llama • Local Model deployment

Frameworks: • LangChain • LlamaIndex • Hugging Face

Orchestration: • LangGraph • Multi-Agent Systems (MAS)

Development: • Python • FastAPI • Asynchronous Programming

RAG & Data: • PostgreSQL • Vector Databases • Advanced Retrieval strategies

ML/DL: • PyTorch • TensorFlow • Model Fine-tuning

Deployment: • Docker • Production API management • LLM monitoring

Tools: • Prompt Engineering • Workflow Design • GenAI Optimization

Key Responsibilities:

• Develop and orchestrate sophisticated AI workflows using LangGraph and multi-agent architectures. • Build and maintain Advanced RAG systems utilizing LlamaIndex and vector databases for high-accuracy retrieval. • Integrate and swap diverse LLMs (commercial and open-source) based on performance and cost requirements. • Design and deploy high-performance, scalable backend services using FastAPI and Async Python. • Fine-tune large language models (LLMs) using PyTorch/TensorFlow to improve domain-specific performance. • Optimize GenAI workflows for latency, cost, and reliability using advanced prompt engineering and monitoring tools. • Containerize and deploy AI services via Docker to production environments.

Required Qualifications:

Hands-on experience building and deploying GenAI applications in a production setting. Strong proficiency in Python and the modern AI library ecosystem (LangChain, LlamaIndex, etc.). Experience with vector search, embedding models, and advanced data retrieval patterns. Knowledge of model fine-tuning techniques and local LLM quantization/hosting. Familiarity with production-grade monitoring, API security, and CI/CD for ML.

Compensation, Benefits, and Duration:

Minimum Compensation: USD 40,000 Maximum Compensation: USD 141,000 Compensation is based on actual experience and qualifications of the candidate. The above is a reasonable and a good faith estimate for the role.

Medical, vision, and dental benefits, 401k retirement plan, variable pay/incentives, paid time off, and paid holidays are available for full-time employees.

This position is not available for independent contractors. No applications will be considered if received more than 120 days after the date of this post.

About the Company

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Photon Interactive UK Ltd