Machine Learning / AI Contractor: 3-5 years (Intermediate)

ROLE TITLE

SENIOR PROMPT ENGINEER

Remote

US Citizen, Green Card Only

ABOUT THE ROLE

Own prompt design and evaluation for LLM-powered chatbots, agents, and RAG systems. You will turn business requirements into reliable prompt and agent workflows and prove they work with measurable results.

RESPONSIBILITIES

Craft, test, and refine prompts that maximize accuracy, relevance, and consistency

Build evaluation frameworks

A/B testing, benchmarking, golden datasets, and rubric-based scoring

Apply deep knowledge of LLM behavior

context windows, tokenization, and fine-tuning versus prompting trade-offs

Partner with product, engineering, and data science to design prompt and agent workflows

Implement prompt security and safety

jailbreak prevention, bias mitigation, and guardrails

Maintain prompt versioning and regression testing

REQUIRED QUALIFICATIONS

5+ years in software, data, or applied AI roles, with minimum 1+ year of hands-on LLM prompt work in production in 5+ yrs of experience

Strong Python scripting and API integration

Hands-on experience with GPT and Claude, and orchestration tools such as LangChain

Demonstrated experience designing evaluation methods and iterating on results

Working knowledge of RAG and agent patterns, including tool calling

Data analysis skills to interpret evaluation results