Staff Engineer, Model Behavior & Prompt Design

United States Digital Space LLC; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

United States Digital Space LLC is seeking software engineers for the Model Behavior team to shape AI product behavior, prompts, and memory usage across models. You will design and test prompts, skills, tools, and memory to influence responses, tools usage, and overall model behavior across domains.

The role focuses on context engineering, model releases, and research to identify failure modes, with emphasis on cross-team knowledge sharing and staying current with the latest techniques in

Qualifications

• 2 to 10+ years of experience in software engineering or research.
• Strong background in software engineering fundamentals and a technical understanding of LLM-driven and agentic systems.
• Experience shaping LLM behavior through prompts, tool and skill design, or memory systems.
• Strong written and verbal communication skills, particularly in explaining complex concepts to diverse stakeholders.

Responsibilities

• Context Engineering: Design, test, and optimize prompts, skills, tools, and memory that shape the company responses across products, features, and use cases.
• Build self-improvement loops to steer the prompt, improve tool/skill use, and improve the ability to draw on memory.
• Model Releases: Help experiment with and release new models.
• Research & Analysis: Identify inconsistencies and failure modes in model outputs through well-designed research projects, for both internal and production systems.
• Knowledge Sharing: Help engineers across teams build intuition for prompt design and context engineering best practices.
• Staying Current: Track the latest prompting, context engineering, and alignment techniques from industry and academia, and bring the best ideas back to the team.

Skills

Software engineering

Prompt design

Memory systems

LLM-driven systems

Context engineering

Communication

Job description

United States Digital Space LLC is seeking software engineers for the Model Behavior team to shape AI product behavior, prompts, and memory usage across models. You will design and test prompts, skills, tools, and memory to influence responses, tools usage, and overall model behavior across domains.

The role focuses on context engineering, model releases, and research to identify failure modes, with emphasis on cross-team knowledge sharing and staying current with the latest techniques in