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Hi there! I’m Esther Onyeacho, a Melbourne-based Product Designer with 4+ years of experience in Graphic Design and AI Training/Evaluation. I recently completed a UI/UX professional short course at RMIT University, and I bring a solid foundation in design systems along with a technical understanding of AI-augmented workflows. I’m proficient in Figma, Canva, Pixel Lab, and design systems to deliver crisp visual assets. Having completed a 6-month product design internship, I’m driven by curiosity to solve complex user problems and I strive to deliver high-quality results in collaborative teams. I enjoy collaborating with cross-functional teams, conducting user research, and turning insights into intuitive interfaces. I’m always learning and eager to contribute to meaningful products that make a difference.…Hi there! I’m Esther Onyeacho, a Melbourne-based Product Designer with 4+ years of experience in Graphic Design and AI Training/Evaluation. I recently completed a UI/UX professional short course at RMIT University, and I bring a solid foundation in design systems along with a technical understanding of AI-augmented workflows. I’m proficient in Figma, Canva, Pixel Lab, and design systems to deliver crisp visual assets. Having completed a 6-month product design internship, I’m driven by curiosity to solve complex user problems and I strive to deliver high-quality results in collaborative teams. I enjoy collaborating with cross-functional teams, conducting user research, and turning insights into intuitive interfaces. I’m always learning and eager to contribute to meaningful products that make a difference.

Esther Onyeacho

Product Designer, Graphic Designer, UI Designer, +6

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Hi there! I’m Esther Onyeacho, a Melbourne-based Product Designer with 4+ years of experience in Graphic Design and AI Training/Evaluation. I recently completed a UI/UX professional short course at RMIT University, and I bring a solid foundation in design systems along with a technical understanding of AI-augmented workflows. I’m proficient in Figma, Canva, Pixel Lab, and design systems to deliver crisp visual assets. Having completed a 6-month product design internship, I’m driven by curiosity to solve complex user problems and I strive to deliver high-quality results in collaborative teams. I enjoy collaborating with cross-functional teams, conducting user research, and turning insights into intuitive interfaces. I’m always learning and eager to contribute to meaningful products that make a difference.…Hi there! I’m Esther Onyeacho, a Melbourne-based Product Designer with 4+ years of experience in Graphic Design and AI Training/Evaluation. I recently completed a UI/UX professional short course at RMIT University, and I bring a solid foundation in design systems along with a technical understanding of AI-augmented workflows. I’m proficient in Figma, Canva, Pixel Lab, and design systems to deliver crisp visual assets. Having completed a 6-month product design internship, I’m driven by curiosity to solve complex user problems and I strive to deliver high-quality results in collaborative teams. I enjoy collaborating with cross-functional teams, conducting user research, and turning insights into intuitive interfaces. I’m always learning and eager to contribute to meaningful products that make a difference.

Available to hire

Hi there! I’m Esther Onyeacho, a Melbourne-based Product Designer with 4+ years of experience in Graphic Design and AI Training/Evaluation. I recently completed a UI/UX professional short course at RMIT University, and I bring a solid foundation in design systems along with a technical understanding of AI-augmented workflows. I’m proficient in Figma, Canva, Pixel Lab, and design systems to deliver crisp visual assets. Having completed a 6-month product design internship, I’m driven by curiosity to solve complex user problems and I strive to deliver high-quality results in collaborative teams.

I enjoy collaborating with cross-functional teams, conducting user research, and turning insights into intuitive interfaces. I’m always learning and eager to contribute to meaningful products that make a difference.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

AI Content Evaluator (Freelancing) at ALIGNERR

February 1, 2026 - Present

Performed side-by-side evaluations of audio outputs from multiple Generative AI models. Critiqued and justified model performance based on quality, clarity, tone, and adherence to complex constraints. Provided detailed qualitative feedback to refine AI response accuracy and natural language processing.

Artificial Intelligence (AI) Trainer (Freelancing) at Outlier AI

December 1, 2025 - Present

Engineered and refined complex prompts to test the limits of Large Language Models (LLMs), optimizing for response accuracy, logical consistency, and user-centricity. Performed rigorous RLHF by evaluating and ranking model-generated outputs based on factuality, safety, and creative reasoning to improve model alignment. Applied product logic and heuristic evaluation to audit AI responses and ensure layout consistency and visual hierarchy in AI outputs. Contributed to the Aether project with high-fidelity data annotations and justifications for model rankings.

AI Trainer (Freelancing) at Outlier AI

December 1, 2025 - Present

Engineered and refined complex prompts to test the limits of Large Language Models (LLMs), optimizing for response accuracy, logical consistency, and user-centricity. Performed rigorous RLHF by evaluating and ranking model-generated outputs based on factuality, safety, and creative reasoning to improve model alignment. Applied product logic and heuristic evaluation principles to audit AI responses, ensuring that the generated content followed structural best practices and complex technical constraints. Contributed to data annotation and quality assurance for high-fidelity data used in fine-tuning next-generation LLMs and evaluated multimodal capabilities to ensure layout consistency and visual hierarchy in AI outputs.

AI Trainer (Freelancing) at Outlier AI, United States

December 1, 2025 - Present

Engineered and refined prompts to test Large Language Models (LLMs) for response accuracy and user-centricity; performed Reinforcement Learning from Human Feedback (RLHF) to improve model alignment; applied heuristic evaluation and auditing to ensure outputs follow best practices; contributed high-fidelity data annotations for model fine-tuning; evaluated multimodal outputs for visual/layout consistency.

Artificial Intelligence (AI) Trainer (Freelancing) at Outlier AI, United States

December 1, 2025 - Present

Engineered and refined prompts to test Large Language Models (LLMs), optimizing for response accuracy, logical consistency, and user-centricity. Performed Reinforcement Learning from Human Feedback (RLHF) by evaluating and ranking model-generated outputs based on factuality, safety, and creative reasoning. Applied heuristic evaluation and auditing to ensure outputs followed structural best practices and complex technical constraints. Contributed to data annotation and quality assurance for the Aether project, influencing fine-tuning of next-generation LLMs. Conducted multimodal analysis to assess model’s interpretation and generation of visual/structured data, ensuring layout consistency and visual hierarchy in AI outputs.

Product Designer (Intern) at Mentorship for Acceleration (M4ACE)

March 1, 2025 - September 1, 2025

Completed two product design projects (UX and UI) within six months. Collaborated with cross-functional teams to design user-friendly interfaces for a blood donation application and generated design ideas for a body fitness app. Participated in brainstorming sessions, conducted usability testing, and developed visual elements including logos, icons, images, and color schemes.

Lead Graphic Designer (Volunteer) at Girl Up Nigeria

December 1, 2024 - April 1, 2025

Oversaw all designs to ensure brand consistency. Developed visually compelling designs for campaigns, social media, events, and publications. Reviewed and guided junior designers, brainstormed and designed annual awards and volunteer certificates, and collaborated with communications and social media teams to achieve organizational goals. Created visuals commemorating international observances.

Graphic Designer (Volunteer) at Deeper Christian Life Ministry

November 1, 2024 - Present

Developed graphics for social media; collaborated with clients to understand design needs; created invitation flyers for events.

Graphic Designer (Volunteer) at Deeper Christian Life Ministry - Australia

November 1, 2024 - Present

Developed graphics for social media platforms (Facebook and Instagram). Collaborated with clients to understand design needs and translated requirements into visual concepts. Created multiple invitation fliers for prayer breakfasts and dinners.

Assistant Graphic Designer (Volunteer) at Girl Up Nigeria

August 1, 2024 - December 1, 2024

Developed 65 visually compelling graphics with Canva and Pixel Lab for campaigns, social media, and events. Brainstormed and generated ideas for various graphic designs. Optimized design elements (size, style, layout, color schemes, themes) to create innovative and functional designs. Created certificate designs for 38 attendees of an anti-gender violence event and visuals for international observances.

Education

Short course in User Experience (UX) and User Interface (UI) at RMIT University, Melbourne, Australia

January 1, 2025 - January 30, 2026

Bachelor of Science in Education (Political Science and Education) at Imo State University, Nigeria

January 1, 2022 - December 31, 2022

Diploma in Political Science at Nnamdi Azikiwe University, Awka, Nigeria

January 1, 2015 - December 31, 2015

Short course in User Experience (UX) and User Interface (UI) at RMIT University, Melbourne – Australia

January 1, 2025 - January 1, 2025

Bachelor of Science (Education) Political Science (Government) and Education at Imo State University - Nigeria