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Senior Prompt Engineer

Apex Cognitive Systems
Colorado Springs
Estimated Salary
USD 130.000 – USD 180.000
Live Update
28 September 2026
Deadline
28 Sep 2027

Job Description

Are you a wordsmith with a passion for artificial intelligence? Apex Cognitive Systems is revolutionizing the way businesses interact with Large Language Models (LLMs). We are looking for a talented Senior Prompt Engineer to join our elite Colorado Springs team. In this role, you will bridge the gap between complex AI capabilities and user needs, crafting the perfect instructions that drive exceptional performance from cutting-edge models like GPT-4 and Claude.

As a key player in our AI division, you will define the standard for prompt architecture, ensuring our products deliver accurate, safe, and delightful user experiences. If you thrive in a fast-paced environment and love solving complex linguistic puzzles, we want to hear from you.

Responsibilities

  • Architect and Optimize Prompts: Design complex, multi-step prompt chains and fine-tune prompt structures to maximize output accuracy and relevance for specific use cases.
  • Model Evaluation: Conduct rigorous A/B testing and analysis of AI outputs to identify edge cases, hallucinations, and performance bottlenecks.
  • Iterative Development: Collaborate closely with Data Scientists and Product Managers to continuously refine prompt strategies based on user feedback and model updates.
  • Documentation: Create comprehensive libraries of prompt templates, system instructions, and best practices to empower the wider engineering team.
  • Guardrails Implementation: Develop prompt strategies that enforce safety guidelines, reduce bias, and ensure ethical AI usage across all client projects.

Qualifications

  • Experience: 3+ years of experience working directly with LLMs (OpenAI, Anthropic, Hugging Face) and prompt engineering methodologies.
  • Tech Stack: Proficiency in Python and familiarity with API integrations (RESTful APIs). Experience with prompt optimization libraries is a plus.
  • Education: Bachelor’s degree in Computer Science, Linguistics, Cognitive Science, or a related technical field is preferred.
  • Communication: Excellent verbal and written communication skills with the ability to explain complex technical concepts to non-technical stakeholders.
  • Creativity: A strong creative thinker who can approach problems from unique angles to generate innovative solutions.

Required Skills

Prompt Engineering LLM OpenAI API Python Fine-tuning NLP AI Strategy System Prompting

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