AI Engineer

PlayerXP Ltd.; Truro; Remote; GBP 50,000 - 75,000; Full time

Benefits offered by this job

Company laptop provided

Employee Assistance Programme (EAP)

28 days annual leave

Job summary

Hertzian in the United Kingdom is seeking an analytical AI/ML Engineer to design, train, and deploy text-focused models. You will work on NLP tasks, build scalable data pipelines, and integrate models into production APIs with a focus on latency and accuracy.

Based at our Truro HQ with 100% on-site work, you will collaborate with product and back-end teams, review model logic, and contribute to sprint planning. Right to work in the UK is required; sponsorship is not offered.

Qualifications

• Experience with ML/NLP or AI domains.
• Proficiency with data preprocessing and evaluation metrics.
• Experience deploying models to production and monitoring drift.

Responsibilities

• Design, train, and fine-tune ML models for text classification.
• Develop data ingestion and preprocessing pipelines for high-volume feedback data.
• Integrate models into production APIs and monitor performance.
• Collaborate with engineers on deployments and sprint planning.

Skills

NLP & ML research

Python

PyTorch/TensorFlow

LLM integration

Education

Machine Learning/AI degree

Tools

PyTorch

TensorFlow

Scikit-Learn

LLM frameworks

Job description

You are an analytical, research-minded, and innovative professional with a passion for artificial intelligence and natural language processing. You thrive in technical environments and understand the nuances of deploying machine learning models into production.

Deeply curious yet collaborative, you have the ability to design efficient AI workflows and naturally translate complex dataset patterns into robust, scalable intelligent features.

Your Experience

• Strong academic background or demonstrable project experience focused on Machine Learning, Natural Language Processing (NLP), or Artificial Intelligence.
• Proficiency with core AI/ML libraries and languages, including Python, PyTorch/TensorFlow, Scikit-Learn, and LLM integration frameworks.
• Demonstrable experience with data preprocessing, model fine-tuning, evaluation metrics, and optimizing inference performance.

Key Responsibilities & Duties

Design, train, and fine-tune machine learning and deep learning models tailored for text classification, sentiment analysis, and pattern recognition.

Build and optimize scalable data ingestion and preprocessing pipelines to clean, structure, and feed high-volume customer feedback data into models.

AI Integration & Evaluation

Collaborate with product and backend teams to integrate trained models into production-ready APIs, monitoring performance and drift.

Stay at the forefront of AI research, experimenting with emerging LLM capabilities and novel algorithms to continually enhance insight accuracy.

• Location: Commutable to our Truro HQ.
• Work Model: 100% Office-based attendance required.
• Software: Confident with Python, ML frameworks, Git, and JIRA.
• Right to Work: Must have the right to work in the UK.

Please note: While Hertzian is licensed to issue Sponsorship Visas, we are not electing to do so for this position.

• Training and fine-tuning machine learning models.
• Preprocessing and analyzing complex feedback datasets.
• Participating in daily stand-ups and AI sprint planning.
• Reviewing peer model logic and submitting pull requests.
• Collaborating with engineers on production deployments.

3-Month Probation Milestone

At the end of your 3-month probation, you will deliver a technical presentation to your Engineering Lead. This presentation must outline your current performance, key AI model experimentations, code contributions, and provide your professional feedback moving forward.

Measuring KPIs

Delivery of high-performing, validated, and efficient machine learning models.

Sprint Delivery

Successful and timely completion of assigned AI engineering tickets.

Ensuring stability, speed, and low latency for production AI inference.

Benefits & Perks (Post-Probation)

Basic benefits package applies to this role:

Time Off

28 days annual leave (inclusive of all UK bank holidays).

Company laptop provided. Full access to our Employee Assistance Programme (EAP).

A Note on Our Review Process

We recognise economically it is a difficult time for many, and as a result, we expect to receive a high volume of applications. We want to assure you that we do not use automated methods or AI to scan or review CVs.

Every single application is reviewed manually by our team on its own merit. We do our very best to get back to everyone; however, if we are not able to respond to you directly, we sincerely apologise. It likely means that your application did not quite meet the criteria to reach the interview stage on this occasion. We thank you for your interest in Hertzian.