Prompt Engineer

At Spines, we’re rebuilding publishing for a new era: powered by technology, guided by craft, and built around the author.

Our next-generation publishing platform combines powerful AI with human expertise to help writers publish professionally across every format, language, and global market. The tools we’re developing streamline editing, design, translation, production, and distribution, making a complex process simple, scalable, and author-first.

Our mission is to make professional publishing possible for everyone, so no great story goes unheard. But what we’re really building is bigger: a platform that transforms how books are made, shared, and experienced globally.

We’re growing a team of people who want to shape the future of publishing: creators, technologists, and storytellers driven by craft, purpose, and the opportunity to make a real impact for authors and readers everywhere.

Role Overview

As a key member of our team, you will work directly with our product and development teams to push the boundaries of what's possible with AI.
The ideal candidate combines a deep understanding of large language models with strong storytelling abilities and a passion for crafting innovative, AI-powered tools.

What You Will Do (Key Responsibilities)

• Design and develop sophisticated prompt systems that generate high-quality content.
• Create, test, and refine prompt frameworks that maintain consistent voice, tone, and style.
• Collaborate closely with the development team to implement and optimize prompts within our technical framework.
• Stay at the forefront of LLM capabilities, prompt engineering techniques, and emerging AI technologies.
• Develop prompt architectures for both scripted content and dynamic conversational exchanges.
• Analyze prompt performance and iterate based on results and feedback.
• Document prompt strategies, architectures, and best practices for team knowledge sharing.
• Research and experiment with various prompt techniques to achieve specific outcomes and solve unique challenges.

Requirements

• 2+ years of experience working with large language models and prompt engineering.
• Demonstrated expertise in crafting effective prompts for conversational AI applications.
• Strong understanding of various LLM platforms (OpenAI, Anthropic, open-source models, etc.).
• Experience optimizing prompts for specific use cases and desired outcomes.
• Excellent reading and written communication skills with attention to nuance, tone, and style.
• Ability to think creatively and solve complex problems in novel ways.
• Experience with A/B testing and performance analysis for content optimization.
• Fluent English proficiency (reading, writing, and speaking).

Nice to Have

• Experience developing or fine-tuning custom models for specific applications.
• Familiarity with character development, narrative design, or content creation.
• Background in creative writing, communications, or related fields.
• Knowledge of digital content strategy and audience building.
• Understanding of multimodal AI systems (text, image, audio).

Why Join Spines?

• Competitive compensation package.
• Work in a dynamic and innovative environment with a supportive team.
• Significant growth opportunities within a rapidly expanding company – we are committed to promoting from within.
• Gain valuable experience in the exciting intersection of AI and publishing.
• Be part of a team that is revolutionizing the publishing industry with cutting-edge AI technology.

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