Associate AI Trainer

Five9; City Of London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading cloud contact center provider in London is seeking a customer-facing Data Scientist / AI Trainer. Responsibilities include labeling data, collaborating with teams to ensure high performance in AI solutions, and creating multilingual datasets. The ideal candidate should have strong communication skills, a background in Human-Computer Interaction or related fields, and familiarity with programming languages such as Python. This full-time role offers an exciting opportunity to be part of an innovative team.

Qualifications

• Familiarity with NLP labeling / analysis.
• Understanding of Conversational AI concepts and technologies.
• Fluent in English both written and spoken.

Responsibilities

• Label language data following labeling guidelines.
• Ensure that labeling / data analysis tasks are completed on time.
• Collaborate with Data Scientists and Engineers.

Skills

Performance Testing

Organizational Skills

Customer Support

Public Speaking

Software Testing

Training & Development

Education

Undergraduate degree in Human-Computer Interaction, Computer Science, Cognitive Science, Linguistics or similar

Graduate degree or higher in Human-Computer Interaction, Computer Science, Cognitive Science, Linguistics or similar

Tools

Python

R

SQL

TensorFlow

SciKit-Learn

Jupyter

Job description

Join us in bringing joy to customer experience. Five9 is a leading provider of cloud contact center software bringing the power of cloud innovation to customers worldwide.

Living our values everyday results in our team-first culture and enables us to innovate, grow and thrive while enjoying the journey together. We celebrate diversity and foster an inclusive environment empowering our employees to be their authentic selves.

We are seeking a customer-facing Data Scientist / AI Trainer to join a Professional Services team focused on Conversational AI implementations. The ideal candidate should have a good understanding of Natural Language Processing; this role you will be responsible for working with Developers and Conversation Designers to ensure the highest levels of accuracy and performance in Five9 AI based solutions such as intelligent virtual agents, agent‑guided solutions and others.

Responsibilities

• Label language data following labeling guidelines.
• Ensure that labeling / data analysis tasks are completed on time and to a high standard.
• Review, maintain and improve labeling guidelines and procedures to ensure consistency and accuracy of labeling / analysis.
• Collaborate with Data Scientists and Engineers to identify requirements and prioritize tasks.
• Work with the project management team to ensure that labeling / analysis tasks are scheduled and completed according to project timelines.
• Identify opportunities for process improvements and automation to increase efficiency and reduce errors.
• Implement / improve methods to compare and evaluate LLM outputs.
• Create and curate multilingual speech and text datasets.
• Evaluate and recommend ML models for topic modeling, summarization, intent classification.
• Create data visualization tools and dashboards.

Minimum Qualifications

• Familiarity with NLP labeling / analysis.
• Undergraduate degree in Human‑Computer Interaction, Computer Science, Cognitive Science, Linguistics or similar.
• Understanding of Conversational AI concepts and technologies.
• Excellent project management and communication skills.
• Strong attention to detail and ability to maintain high‑quality standards.
• Demonstrated ability to work independently and as part of a team.
• Fluent in English both written and spoken.

Preferred Qualifications

• Graduate degree or higher in Human‑Computer Interaction, Computer Science, Cognitive Science, Linguistics or similar.
• Experience with programming and data analysis / statistics with languages and platforms such as Python, R, Jupyter and SQL.
• Experience in a customer‑facing role (requirement gathering, presentations, etc.).
• Familiarity with version control, unit tests and other programming best practices.
• Proficiency in additional languages.
• Experience designing and conducting data experiments.
• Familiarity with bot frameworks such as IBM Watson, Amazon Lex, Rasa or Google Dialogflow.
• Experience with ML libraries such as SciKit‑Learn, TensorFlow, etc.
• Hands‑on experience with LLMs, prompt engineering, fine‑tuning and evaluation.

Key Skills

• Performance Testing
• Organizational Skills
• Classroom Experience
• Learning Technology
• Instructional Design
• Customer Support
• IT Service Management
• LMS
• Software Testing
• Training & Development
• Adobe Captivate
• Public Speaking

Employment Type

Full Time

Experience

years

Vacancy

1

Five9 embraces diversity and is committed to building a team that represents a variety of backgrounds, perspectives and skills. The more inclusive we are the better we are. Five9 is an equal opportunity employer.

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