Invisible Technologies

Welsh Audio Specialist - Freelance AI Trainer Project

United Kingdom full-time Senior GBP6 - GBP65
full-time Senior level Technology & IT Salary listed Curated
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About the role

Project Overview
We are sourcing independent Audio Evaluation Specialists for an AI benchmark evaluation project assessing advanced agentic audio models. As AI models increasingly handle complex workflows in this domain—specifically real-world customer support scenarios like flight bookings, financial services, and telecommunications—their accuracy relies entirely on robust, expert-crafted training data. The objective of this project is to autonomously produce high-quality evaluation tasks through simulated interactions, audit conversational AI outputs, and generate clean, reliable datasets to optimize model performance.
Project Deliverables & Scope
Operate autonomously to design complex evaluation frameworks and provide structured training data. Expected deliverables include:

Role-Play Scenario Execution: Creating and executing complex, role-play-based evaluation scenarios that simulate realistic customer service interactions across travel, finance, and technical support domains.

Model Performance Auditing: Evaluating AI model performance across standardized qualitative and quantitative metrics, focusing strictly on task completion accuracy, conversational naturalness, and audio comprehension.

Technical Metric Evaluation: Assessing the model's basic computer programming literacy, including its understanding of JSON structures, functions, methods, and ability to reason about structured data within a support context.

Representative Dataset Generation: Contributing to the development of diverse, high-quality audio datasets that accurately reflect real customer expectations for clarity, efficiency, and natural conversational flow.

Required Expertise
To successfully fulfill the deliverables of this project, Contractors must possess deep industry knowledge to craft realistic professional scenarios. Core skillset includes:

Demonstrable professional expertise in complex customer support, technical troubleshooting, or conversational AI evaluation.

Native or bilingual proficiency in the target language, including fluency across all language skills (reading, listening, writing, and speaking), alongside strong analytical and verbal communication skills to confidently conduct simulated customer support role-plays.

Basic computer programming literacy, specifically a comfortable understanding of JSON structures, functions, methods, and simple logic.

A meticulous, detail-oriented approach to working with structured prompts, complex evaluation rubrics, and technical guidelines.

Required Equipment: Access to a high-quality microphone to ensure clean, reliable audio input during voice evaluations.

We offer a pay range of $6-to-$65 per hour, with the exact rate determined after evaluating your experience, expertise, and geographic location. Final offer amounts may vary from the pay range listed above. As a contractor you’ll supply a secure computer and high‑speed internet; company‑sponsored benefits such as health insurance and PTO do not apply.
Engagement Type: Freelance / Independent Contractor
Workplace Type: Remote
Seniority Level: Mid-Senior Level
Originally posted on Himalayas

Interview prep

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Technology & IT Customer Service Finance Remote Collaboration Writing Senior level full-time

Likely questions

  1. Tell us about work you have done that is close to the Welsh Audio Specialist - Freelance AI Trainer Project role.
  2. How would you approach your first 30 days at Invisible Technologies?
  3. Which of Customer Service, Finance and Remote Collaboration have you used recently, and what did it help you achieve?
  4. How have you led people, improved a process, or made a hard decision in a previous role?
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with Customer Service, Finance and Remote Collaboration.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Welsh Audio Specialist - Freelance AI Trainer Project role because I can bring practical experience in Customer Service, Finance and Remote Collaboration, learn the team quickly, and contribute to the outcomes Invisible Technologies needs from this hire.

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