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Senior Prompt Engineer - Phoenix, AZ

Apex AI Systems
Phoenix
Estimated Salary
USD 140.000 – USD 190.000
Live Update
22 September 2026
Deadline
22 Sep 2027

Job Description

Shape the Future of Intelligence in the Heart of the Southwest

Apex AI Systems is pioneering the next generation of generative AI solutions, and we are looking for a world-class Senior Prompt Engineer to join our Phoenix, AZ team. In this high-impact role, you will serve as the primary architect behind our Large Language Model (LLM) interactions, ensuring our AI delivers precision, creativity, and business value at scale.

We are offering a competitive compensation package reflecting the high demand for AI talent, including a base salary of $140,000 - $190,000 USD. This is a full-time position for a visionary individual who understands that the quality of an AI's output is defined by the quality of its instructions.

What You'll Do:

  • Design, implement, and rigorously test complex prompt engineering strategies for GPT-4, Claude, and custom LLMs.
  • Optimize prompt structures to reduce hallucinations and improve response accuracy in high-stakes environments.
  • Analyze user interaction data to iterate on prompt libraries and fine-tuning methodologies.
  • Collaborate with software engineers and data scientists to integrate prompt-based logic into production APIs.
  • Document prompt patterns and create best-practice guidelines for the engineering team.
  • Stay abreast of the rapidly evolving AI landscape to innovate on prompt engineering techniques.

What We're Looking For:

  • 5+ years of experience in technical writing, content strategy, or a related field, with a focus on AI/ML.
  • Strong proficiency in Python, SQL, or JavaScript is highly preferred.
  • Deep understanding of Natural Language Processing (NLP) concepts and transformer architectures.
  • Exceptional analytical skills with a data-driven approach to optimizing model outputs.
  • Experience working with vector databases or RAG (Retrieval-Augmented Generation) pipelines.
  • A passion for linguistics, logic, and the intersection of human-computer interaction.

Don't just use AI; master it. Join us in Phoenix and build the future of intelligent systems.

Responsibilities

  • Design and optimize prompts for Large Language Models (LLMs) to maximize accuracy and relevance.
  • Conduct A/B testing and data analysis to refine prompt engineering strategies.
  • Collaborate with cross-functional teams to integrate prompt logic into software applications.
  • Develop and maintain comprehensive prompt libraries and documentation.
  • Analyze user feedback to drive continuous improvement of AI outputs.
  • Research emerging trends in AI, NLP, and generative AI methodologies.

Qualifications

  • Minimum of 3-5 years of experience in a technical or content-focused role.
  • Strong command of the English language with an eye for detail and nuance.
  • Experience with Python or similar programming languages is a plus.
  • Understanding of NLP concepts and how LLMs function internally.
  • Experience using tools like ChatGPT, Midjourney, or Claude API.
  • Ability to troubleshoot complex AI responses and debug prompt failures.

Required Skills

Prompt Engineering Natural Language Processing (NLP) Large Language Models (LLMs) GPT-4 Python ChatGPT AI Model Optimization Technical Writing Data Analysis RAG Fine-tuning

Ready to Take This Challenge?

Make sure your resume is ready. Submit your application now before the deadline.

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