AI Developer (LLM Specialist), Retrain and Fine-Tume LLMs On Our Datasets

Purple Dot Digital Limited; London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading AI development company in London is seeking an AI Developer specializing in LLMs. You'll retrain and fine-tune models, collaborate across teams, and deploy solutions. Ideal candidates have 3-5 years of experience, proficiency in Python, and strengths in NLP. Competitive salary and flexible work options provided.

Benefits

Competitive Salary

Professional Growth

Flexible Work Environment

Innovative Culture

Qualifications

• 3-5 years of experience in AI/ML development focused on LLMs.
• Proficiency in Python and deep learning frameworks.
• Strong understanding of NLP techniques and cloud platforms.

Responsibilities

• Retrain and fine-tune existing LLMs using proprietary datasets.
• Collaborate with teams to align AI solutions with business goals.
• Assist in deploying LLMs into production environments.

Skills

Retraining LLMs

Conversational AI

Python

Docker

Education

Bachelor's or Master's in Computer Science or related field

Tools

TensorFlow

PyTorch

Job description

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AI Developer (LLM Specialist), Retrain and Fine-Tume LLMs On Our Datasets, London

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Client:

Purple Dot Digital Limited

Location:

London, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

bffff30629ec

Job Views:

29

Posted:

12.08.2025

Expiry Date:

26.09.2025

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Job Description:

We are seeking an experienced AI Developer with a strong background in Large Language Models (LLMs) to join our AI team. The ideal candidate will have expertise in retraining and fine-tuning LLMs using proprietary datasets to build a conversational chat bot.

Tasks

Key Responsibilities:

• Model Development: Retrain and fine-tune existing Large Language Models (LLMs) using proprietary datasets to meet specific business requirements.
• Data Integration: Work with data engineers and data scientists to curate, preprocess, and integrate company-specific data into LLMs.
• Model Evaluation: Design and execute experiments to evaluate model performance, accuracy, and scalability, using metrics relevant to the business.
• Optimization: Implement model optimization techniques to improve efficiency, reduce latency, and enhance model scalability.
• Collaboration: Collaborate with cross-functional teams, including product managers, data scientists, and software engineers, to align AI solutions with business goals.
• Deployment: Assist in deploying LLMs into production environments, ensuring robust and scalable AI solutions.

Requirements

Qualifications:

Experience: 3-5 years of experience in AI/ML development, with a focus on working with Large Language Models (e.g., GPT, BERT, Hugging Face, etc.).

Education: Bachelor's or Master's degree in Computer Science, Artificial Intelligence, Data Science, or a related field (or equivalent experience).

Technical Skills:

Proficiency in Python and deep learning frameworks (e.g., TensorFlow, PyTorch).

Strong understanding of NLP techniques, including tokenization, embeddings, transformers, and attention mechanisms.

Experience in retraining and fine-tuning LLMs using large-scale datasets.

Familiarity with cloud platforms like AWS, Google Cloud, or Azure for model training and deployment.

Data Skills: Expertise in data preprocessing, augmentation, and management of large datasets for training purposes.

Problem-Solving: Strong analytical and problem-solving skills, with the ability to address complex AI challenges.

Communication: Excellent communication skills to explain technical concepts to non-technical stakeholders.

Version Control: Proficiency with version control tools such as Git.

Required skills

• Experience in retraining LLMs on various datasets
• Conversational AI
• Python
• Docker

Preferred Skills:

• Experience with specialized AI domains such as conversational AI, sentiment analysis, or recommendation systems.
• Knowledge of model interpretability techniques and responsible AI practices.
• Familiarity with MLOps pipelines for continuous integration and deployment of AI models.
• Experience with API development and integration for deploying AI services.
• Prior experience in working with proprietary or sensitive data.

What We Offer:

• Competitive Salary: Based on experience and expertise.
• Professional Growth: Opportunities for career development, including access to the latest AI research and technologies.
• Flexible Work Environment: Options for remote work and flexible hours to promote work-life balance.
• Innovative Culture: Join a forward-thinking team that values creativity, collaboration, and innovation.

Interested candidates are invited to submit their resume, a cover letter, and any relevant project portfolios.

UK Skilled Worker Visa Sponsorship

We do not offer UK Skilled Worker Visa Sponsorship. If you are UK resident then you must have working UK VISA to apply for this job.

We specialize in building marketplace mobile and web apps. We work with a vast range of technology stack.