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Hi, I’m Sara Sibylle, a UX and narrative designer, and AI trainer with 2+ years of experience refining large language model outputs via RLHF evaluation for accuracy, safety, and user experience. I’m passionate about accessible, responsible AI training and use. As a game writer, I’ve developed character profiles and narrative arcs, ensuring tonal consistency and immersive world-building. I enjoy collaborating with writers and product teams to shape engaging dialogue, world-building, and player journeys. Previously, I was a UX designer and instructor for 11 years.…Hi, I’m Sara Sibylle, a UX and narrative designer, and AI trainer with 2+ years of experience refining large language model outputs via RLHF evaluation for accuracy, safety, and user experience. I’m passionate about accessible, responsible AI training and use. As a game writer, I’ve developed character profiles and narrative arcs, ensuring tonal consistency and immersive world-building. I enjoy collaborating with writers and product teams to shape engaging dialogue, world-building, and player journeys. Previously, I was a UX designer and instructor for 11 years.

Sara Sibylle

PRO

Writer, Content Designer, Game Designer, +2

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Hi, I’m Sara Sibylle, a UX and narrative designer, and AI trainer with 2+ years of experience refining large language model outputs via RLHF evaluation for accuracy, safety, and user experience. I’m passionate about accessible, responsible AI training and use. As a game writer, I’ve developed character profiles and narrative arcs, ensuring tonal consistency and immersive world-building. I enjoy collaborating with writers and product teams to shape engaging dialogue, world-building, and player journeys. Previously, I was a UX designer and instructor for 11 years.…Hi, I’m Sara Sibylle, a UX and narrative designer, and AI trainer with 2+ years of experience refining large language model outputs via RLHF evaluation for accuracy, safety, and user experience. I’m passionate about accessible, responsible AI training and use. As a game writer, I’ve developed character profiles and narrative arcs, ensuring tonal consistency and immersive world-building. I enjoy collaborating with writers and product teams to shape engaging dialogue, world-building, and player journeys. Previously, I was a UX designer and instructor for 11 years.

Available to hire

Toronto, Canada

Hi, I’m Sara Sibylle, a UX and narrative designer, and AI trainer with 2+ years of experience refining large language model outputs via RLHF evaluation for accuracy, safety, and user experience. I’m passionate about accessible, responsible AI training and use.
As a game writer, I’ve developed character profiles and narrative arcs, ensuring tonal consistency and immersive world-building. I enjoy collaborating with writers and product teams to shape engaging dialogue, world-building, and player journeys.
Previously, I was a UX designer and instructor for 11 years.

Skills

Experience Level

Prompt Engineering

Expert

Data Visualization

Expert

Language

English

Fluent

Work Experience

AI Content Reviewer at US (Contract)

October 1, 2024 - Present

Annotated, evaluated, and rewrote 1,000+ AI-generated prompt–response pairs to improve dialogue accuracy, coherence, and safety alignment for large language models including ChatGPT and Meta AI. Ranked and benchmarked outputs against strict evaluation rubrics; flagged safety, bias, and hallucination risks and rewrote content to meet ethical guidelines. Designed structured prompt frameworks to elicit accurate, relevant, and context-aware model responses; reduced revision cycles and improved model performance. Reviewed and transcribed AI-generated audio outputs, delivering polished transcripts with accurate timestamps, filler removal, and caption-ready formatting. Provided detailed feedback on failure patterns to support iterative improvements in dialogue quality and overall user experience.

Mobile App Tester at UTest

January 1, 2023 - Present

Executed exploratory tests on both Android and iOS applications, ensuring comprehensive coverage of all functionalities. Documented test results and bugs with video recordings using SnagIt, ScreenPal, Loom. Worked closely with development teams to understand project requirements and test builds within tight deadlines.

Game Writer & Editor at Petal Pixel Studio

July 31, 2024 - July 31, 2025

Developed in-depth dialogue, personality profiles, and narrative arcs for a main character in a visual novel, supporting immersive world-building and player engagement. Refined multi-contributor dialogue to maintain tonal consistency, character integrity, and narrative coherence across storylines. Collaborated closely with writers and project leads to define story goals and interactive narrative standards.

Generative AI Imaging & Prompt Engineer at Independent

January 1, 2023 - Present

Developed high-fidelity character and environment renders using Midjourney (v4–5.1), DALL·E, Gemini Nano Banana, and Photoshop for narrative scenes and world-building. Designed structured, multi-stage prompt chains (weighting, seed control, negative prompts) to maintain character consistency and reduce artefacts across outputs.

UX Instructor at Design Lab · RED Academy

December 31, 2016 - December 31, 2019

Mentored multiple cohorts in UX/UI fundamentals; created teaching materials and syllabi.