Jobs in Bristol

ML Runtime Engineer (Mid-Level and Senior)

This role involves developing and integrating a high-performance Rust-based runtime for AI accelerators, focusing on inference server compatibility with open-source ML frameworks like PyTorch, vLLM, and SGLang. The engineer will work closely with hardware and ML teams using a co-design approach to optimize performance for large language models. Collaboration and ownership in a fast-paced, innovative environment are key aspects of the position.

Fractile London, United Kingdom

Hybrid Permanent

Modelling Engineer (Mid-Level and Senior)

You will develop pre-silicon models of AI acceleration hardware, enabling early software development and collaborating with hardware, software, and ML engineers. The role involves architectural definition, performance evaluation, and product design verification.

Fractile London, United Kingdom

Principal Engineer - AI Productivity Lab

The Principal Engineer role in the AI Productivity Lab involves leading the design and implementation of AI-driven solutions to enhance employee productivity and process automation. You will work closely with the Head of the Lab and business stakeholders to embed AI agents into team workflows, develop reusable capabilities, and mentor engineers.

Lloyds Banking Group Ec2V7Ae, EC2V 7AE, United Kingdom £84,624 – £126,936 pa

Hybrid Permanent

Senior Data Science Analyst - Audit

This role involves applying advanced data science techniques to evaluate the Group's control environment, partnering with audit colleagues to assess risks, and driving innovation through the use of AI and machine learning. The position is part of a skilled team with high visibility to senior management and offers opportunities for professional development.

Lloyds Banking Group Edinburgh, Alba / Scotland, United Kingdom £49,000 – £59,000 pa

Hybrid Permanent

Director of Technology - AI

Leads the AI technology portfolio at Digital Catapult, defining strategic roadmaps and driving collaborative R&D programmes with academic and industry partners. Focuses on emerging AI fields such as agentic AI and post-LLM approaches, while translating research into practical applications. Mentors technical teams, secures funding, and influences UK AI policy and innovation ecosystems through thought leadership and stakeholder engagement.

Digital Catapult Belfast, United Kingdom £110,000 – £130,000 pa

Hybrid Permanent

Expression of Interest- Red Team

The Red Team at the AI Security Institute conducts cutting-edge research to identify and mitigate vulnerabilities in advanced AI systems. The team collaborates closely with leading AI companies, UK officials, and allied governments to inform deployment, research, and policy decisions, focusing on misalignment, misuse, and control of AI systems.

AI Security Institute London, United Kingdom £65,000 – £145,000 pa

On-site Permanent Clearance Required

Expression of Interest- Chem Bio

This role involves conducting technical research to assess and mitigate chemical and biological risks posed by frontier AI systems. You'll design evaluations, develop benchmarks, and work on capability elicitation, threat modelling, and safeguards, translating findings for AI developers and government stakeholders. The work is interdisciplinary, combining machine learning, biosecurity, chemistry, and policy to produce actionable insights in a high-impact, mission-driven environment.

AI Security Institute London, United Kingdom £65,000 – £145,000 pa

Hybrid Permanent Clearance Required

QA Lead Analyst

This role involves leading the development of a modern QA function for a healthtech software platform, with a focus on building test automation frameworks, implementing AI-driven testing tools, and establishing quality standards across the development lifecycle. The candidate will mentor engineers, define test strategy, and work closely with engineering and product teams to improve release quality and defect prevention. A strong emphasis is placed on innovation through automation and AI integration in testing processes.

Bristow Holland Ltd London, United Kingdom £60,000 pa

Hybrid Permanent

QA Test Analyst

This role involves building and maintaining automated tests across UI, API, and integration layers for complex, data-rich healthcare applications. The QA Test Analyst will use modern frameworks like Playwright or Cypress, integrate testing into CI/CD pipelines, and leverage AI tools to enhance test efficiency and defect analysis. Collaboration with Product, Engineering, and Support teams ensures quality is embedded throughout the software lifecycle in a technology-driven healthcare environment.

Bristow Holland Ltd London, United Kingdom £45,000 – £50,000 pa

Hybrid Permanent

Modelling Engineer (Mid-Level or Senior)

You will develop pre-silicon models of AI acceleration hardware, enabling early software development and informing architecture, performance, and product design. You'll work closely with hardware, software, and ML engineers in a collaborative co-design environment.

Fractile Bristol, United Kingdom

Lead Data Scientist

Lead a team of data scientists to develop advanced AI and machine learning solutions for cybersecurity threat detection and prevention within a major UK financial institution. Drive innovation in LLM-based automation, build scalable ML pipelines on GCP, and ensure models meet ethical, regulatory, and operational standards in a hybrid working environment.

Lloyds Banking Group Manchester, United Kingdom £92,701 – £109,060 pa

Hybrid Permanent Clearance Required

PCBA Product Engineer – AI Hardware

Fractile is building silicon, systems, and software which will redefine the frontier of AI: running the world’s most advanced models at radically higher speed and lower cost. We have an exceptional team across hardware and software capable of bringing about...

Fractile United Kingdom