Latest junior Jobs

Senior Performance Engineer | AI Infrastructure | Cambridge

This role involves working between research and engineering teams to build performance models and calculators for AI infrastructure. You'll optimize GPU/accelerator code, profile real training and inference runs, and provide actionable insights that influence system architecture and procurement decisions for the organization and its members.

Pure Resourcing Solutions Dry Drayton, Cambridgeshire, United Kingdom £90,000 – £120,000 pa

Hybrid

Senior Software Engineer

This role involves designing and building features across the full stack, working with modern technologies like React, TypeScript, Python, Node.js, PostgreSQL, and AWS serverless/microservices. You will shape the technical architecture, mentor a junior developer, and contribute to a cloud-native platform in an AI-first environment.

VIQU IT Recruitment Manchester, United Kingdom £60,000 – £65,000 pa

Senior AI Engineer

The Senior AI Engineer will design and develop production-grade AI systems, focusing on RAG pipelines, generative AI workflows, and LLM optimization. Key responsibilities include building scalable solutions, implementing retrieval strategies, and mentoring junior engineers within a growing AI team.

The Portfolio Group London, United Kingdom £80,000 pa

On-site Permanent

Senior Performance Engineer | AI Infrastructure | Cambridge |

This role involves working at the intersection of research and engineering, optimizing AI infrastructure and performance. You'll build models and calculators to forecast system behavior, optimize GPU code, and provide actionable insights that influence hardware and system decisions for the organization and its members.

Pure Resourcing Solutions Cb238Sl, United Kingdom £90,000 – £120,000 pa

Hybrid

Senior Data/AI Engineer - Manager

This role involves leading technical workstreams in data and AI transformation programmes, designing scalable data pipelines, and building AI and machine learning solutions including Generative AI with LLMs. The engineer will mentor junior staff, collaborate with cross-functional teams, and ensure robust data governance and solution reliability in Agile environments. Work focuses on modern cloud platforms and advanced data technologies to deliver high-impact client outcomes.

eFinancialCareers Manchester, United Kingdom £60,000 – £77,000 pa

Principal Data Scientist and ML Researcher

This role involves shaping data science strategy, generating novel research ideas, and leading the technical delivery of AI/ML solutions for defence problems. You will work autonomously, collaborate with cross-disciplinary teams, and manage junior team members.

Robert Half Gloucester, United Kingdom

Senior Data Scientist

Leads high-impact AI projects in the defence sector, designing end-to-end data science solutions and robust software architectures. Mentors junior data scientists and collaborates with clients to translate complex problems into technical frameworks. Works on ethical, cutting-edge AI applications in high-stakes environments with a focus on delivery rigor and technical excellence.

Faculty AI London, United Kingdom

Remote Permanent Flexible Clearance Required

Senior Machine Learning Engineer

Lead the development and deployment of cutting-edge, production-grade machine learning systems for high-impact clients, particularly in the defence sector. Design scalable ML infrastructure, define best practices for ML deployment, and act as a technical advisor while mentoring junior engineers. Work in a cross-functional environment with strong emphasis on ethical, reliable AI and client collaboration.

Faculty AI London, United Kingdom

Hybrid Permanent Flexible Clearance Required

Staff Machine Learning Software Engineer, Research

Lead and shape research initiatives in machine learning for physics-based simulation, focusing on scalable and distributed training of foundation models. Translate research prototypes into robust, production-grade systems using cloud and HPC infrastructure, while mentoring junior engineers and guiding technical direction across the Research team.

PhysicsX London, United Kingdom

On-site Permanent

Corporate Sales Engineer , GBR)

The Corporate Sales Engineer role at CrowdStrike involves a mix of technical and strategic responsibilities, including supporting the sales process, conducting competitive research, and developing technical solutions. You will work closely with cross-functional teams to drive sales objectives and improve team effectiveness.

CrowdStrike Reading, United Kingdom

Hybrid

Senior Legal Counsel

This role involves providing expert legal advice on complex commercial, procurement, and technology transactions across the UK and internationally, with a focus on technology law, IP, data protection, and cross-border contracts. The Senior Legal Counsel will lead on high-value contracts related to the Ocado Smart Platform, mentor junior team members, and collaborate with internal stakeholders and external counsel. They will also contribute to legal strategy, develop standard templates, and support major corporate projects including M&A and capital markets activity.

Ocado Welwyn Hatfield, United Kingdom

Research Leader (Toxicology), Cambridge, MA

Lead toxicology strategy for drug discovery projects using an AI-first approach, guiding safety assessment from early discovery to regulatory submission. Develop predictive toxicology models in collaboration with machine learning teams and external CROs. Mentor team members and contribute to reducing animal testing through innovative, data-driven methodologies.

Isomorphic Labs Cambridge, United Kingdom

Cyber Security Engineer - Cyber & Autonomous Systems Team

This role involves working with cutting-edge AI and cybersecurity technologies to design and develop cyber ranges, CTF challenges, and evaluation metrics. You will collaborate with a team of experts to ensure the UK government and its partners have an accurate view of AI risks and capabilities.

AI Security Institute London, United Kingdom

Software Engineer - Cyber & Autonomous Systems Team

This role involves working with cutting-edge AI and cybersecurity technologies to evaluate the capabilities of advanced AI models. Responsibilities include building evaluation infrastructure, developing analysis tools, leading testing exercises, and delivering high-quality Python software. The work has a direct impact on shaping government policies and safety standards for AI systems.

AI Security Institute London, United Kingdom

IT Lead Engineer

This role involves owning and evolving a high-performance computing (HPC) infrastructure to support CPU/GPU-intensive physics simulations, with a focus on performance tuning, job scheduling, and capacity planning. The IT Lead Engineer will also mentor junior staff, automate IT processes, and act as the escalation point for complex technical issues across HPC, developer tooling, and general IT. The position operates in a high-ownership environment within a deep-tech scale-up, requiring strong Linux, networking, and zero-trust security expertise alongside an automation-first mindset.

PhysicsX London, United Kingdom