Principal Generative AI Engineer

Ethereum Technologies; Weehawken (NJ); On-site; USD 88,000 - 118,000; Full time

Job summary

Ethereum Technologies is seeking a Principal Generative AI Engineer to lead hands-on delivery of end-to-end AI solutions across ML and agentic systems. You will mentor a growing team, shape enterprise AI practices, and collaborate with business partners to quantify value.

The role requires deep expertise in LLMs, RAG, and multi-agent orchestration, with cloud experience across GCP Vertex AI, AWS SageMaker, and modern data platforms. 9-month contract with competitive bill rate.

Qualifications

• Advanced degree in a quantitative field.
• 8+ years applying data science, ML, AI to real business problems.
• Fluent with AI-assisted engineering tools and critical review of output.
• Experience building engineering agents to accelerate delivery.
• Full-stack AI fluency from modeling to production.
• Deep hands-on with LLMs, RAG, and graph-based retrieval.
• Experience with multi-agent orchestration frameworks and integration.
• Proficiency in cloud AI platforms and data platforms.
• Strong stakeholder engagement and leadership.
• Mentoring technical talent; regulated industries a plus.

Responsibilities

• Design, build and deliver AI solutions end to end across ML and agentic AI.
• Partner with stakeholders to scope and quantify value of AI solutions.
• Own solution delivery on enterprise AI platform and mentor teams.

Skills

Full-stack AI

LLM application development

Agentic AI design

Prompt engineering

GraphRAG knowledge graphs

Multi-agent orchestration

Testing and deployment validation

Cloud platforms (GCP Vertex AI)

AWS SageMaker/Bedrock familiarity

Data streaming/ETL basics

Education

MS or PhD in CS/AI/Engineering/Math

Tools

GCP Vertex AI

AWS SageMaker/Bedrock

Databricks

LangGraph / Google ADK

Streamlit / React

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

Job Title:Principal Generative AI Engineer

Duration: 9 Months

Bill Rate: $75/hour (C2C)

Job Type: W-2, 1099, C2C

Client: To Be Discussed Later

Work Authorization: US Citizen, Green Card, OPT-EAD, CPT, H-1B, H4-EAD, Other

Job Description:

This is a hands-on, full-stack AI role: you design, build, and deliver AI solutions end to end, across traditional ML, Generative AI, and Agentic AI, while shaping technical strategy and mentoring/managing a growing team.
You will scope and deliver core AI solutions in close partnership with business stakeholders, data scientists, engineers, and product and technology partners, and help shape enterprise AI practices and standards, bringing deep expertise in AI solution delivery. You will own solution delivery on top of the enterprise AI platform, shipping agentic solutions end to end rather than building the underlying platform infrastructure. Additionally, you will partner with the business to assess and quantify the overall value delivered by the AI solution.

Required Skills:

• Advanced degree (MS or PhD) in Computer Science, AI, Engineering, Mathematics, or a related quantitative field.
• 8+ years of experience applying data science, ML, and AI to real-world business problems, with progressive growth in scope, complexity, and influence.
• Fluent with AI-assisted engineering tools, such as Codex, Claude Code, used daily as a force multiplier, with critical review of generated output.
• Experience building engineering agents that accelerate delivery itself, such as testing, code review, or deployment-validation agents, not just using AI tools to write code.
• Full-stack AI fluency: demonstrated ability to work across the spectrum from statistical modeling and ML to LLM application development and agentic system design, including rapid prototyping (e.g., Streamlit, React) and owning solutions through to production.
• Deep hands-on experience with LLMs, RAG architectures, and prompt engineering, including graph-based retrieval (GraphRAG, knowledge graphs) alongside traditional vector-based RAG.
• Hands-on experience with multi-agent and sub-agent orchestration frameworks (e.g., LangGraph, Google ADK, or equivalent) and MCP or equivalent tool integration protocols, for production agentic systems.
• Experience developing and evaluating AI systems rigorously: automated evaluation pipelines, red-teaming, hallucination detection, safety testing, and performance monitoring.
• Proficiency with cloud AI platforms, particularly GCP Vertex AI for agentic development, with working knowledge of AWS services (SageMaker, Bedrock) and modern data platforms (Databricks). Comfort consuming cloud-native platform services (existing IaC templates, CI/CD pipelines, the AI gateway) to deploy and operate solutions.
• Strong stakeholder engagement and communication skills: ability to scope initiatives, present to senior leaders, manage expectations, and drive alignment across business and technology partners.
• Track record of mentoring and elevating technical talent.
• Experience in life insurance, financial services, or other regulated industries is a plus.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.