Data Annotator

Connexai; Manchester; On-site; GBP 18,000 - 24,000; Full time

Job summary

ConnexAI is seeking an AI Data Annotator to create and refine speech and text datasets for training state-of-the-art AI models. You will review machine outputs and ensure high-quality annotations, working closely with data scientists to maintain data quality and project standards.

The role requires on-site presence in Manchester, with a focus on accuracy, consistency, and efficiency in a fast-paced data lab environment.

Qualifications

• Exceptional attention to detail and ability to spot inconsistencies in text and audio.
• Experience with audio transcription, annotation, or similar tasks.
• Proficient with in-house data labelling tools and meeting deadlines.
• Comfortable with repetitive tasks and long periods of focused work.
• Strong linguistic or cultural knowledge and interest in AI and language.
• On-site in Manchester 5 days a week.

Responsibilities

• Create, review, and refine high-quality speech and text datasets for training and evaluating AI models.
• Correct and assess machine-generated outputs to improve ASR, TTS, LLM performance.
• Conduct quality assurance checks and peer reviews for accuracy and consistency.
• Identify data quality issues and edge cases; escalate as needed for process improvement.
• Collaborate with Data Scientists and Data Operations to deliver secure datasets.

Skills

Attention to detail

Audio transcription experience

Annotation tools

Repetitive workload endurance

Linguistic knowledge

Tools

In-house labelling tools

Job description

At ConnexAI, we’re building the future of language technology. As one of the leading global AI data teams, we work at the intersection of artificial intelligence, linguistics, and human insight. Our global clients rely on us to deliver top-tier datasets for Automatic Speech Recognition (ASR), Text-to-Speech (TTS), and Large Language Models (LLMs).

We’re a trusted data partner for model development, and our projects cover multiple languages and cultures. Our cutting-edge approaches and AI have helped hundreds of businesses worldwide enhance their customer engagement. ConnexAI is committed to innovation, creativity, and growth, which is why we attract and develop the best talent. Join us in shaping the future of customer experience.

The Role

We’re looking for committed, detail-oriented, and linguistically sharp individuals to join our growing team in Data Annotation. You'll work on-site (Monday to Friday) at our Manchester office to maintain high standards of data security and confidentiality.

As an AI Data Annotator, you will:

• Create, review, and refine high-quality speech and text datasets for training and evaluating cutting-edge AI models.
• Correct and assess machine-generated outputs, helping improve the performance of ASR, TTS, LLM, and other language technologies.
• Conduct quality assurance checks and peer reviews, ensuring annotation accuracy, consistency, and compliance with project standards.
• Identify and escalation data quality issues, edge cases, and annotation ambiguities, contributing to continuous process improvement.
• Work closely with Data Scientists and within Data Operations to deliver secure, reliable, and scalable datasets for global AI initiatives.

What We’re Looking For

• Exceptional attention to detail - you can spot inconsistencies and anomalies in text and audio.
• Experience with audio transcription, annotation, or similar tasks is highly desirable.
• Ability to work efficiently with in-house data labelling tools and meet deadlines/KPIs.
• Comfortable with repetitive tasks and long periods of focused work.
• Strong linguistic or cultural knowledge, and passionate about AI, language, and the role data plays in model development.
• Must be able to work on-site in Manchester 5 days a week.

Why ConnexAI?

• Work on meaningful AI projects that power the next generation of voice and language technology.
• Be part of a collaborative, expert-led team with strong culture of learning and growth.
• Enjoy the buzz of working in an innovative, truly global AI company.
• Gain exposure to cutting-edge AI development across our products.