Latest Professional Services Jobs

Research Engineer, RL Scaling Science

This role involves designing and running large-scale reinforcement learning experiments to understand scaling effects across model size, compute, and task horizon. The engineer will build benchmarks for long-horizon RL, debug system-level issues that emerge at scale, and translate validated research findings directly into production training pipelines. The position sits at the intersection of research and systems engineering, requiring deep empirical rigor and close collaboration with both research and infrastructure teams.

Anthropic London, United Kingdom £375,000 – £640,000 pa

Staff Software Engineer, Inference

This role involves designing and maintaining large-scale, performance-sensitive distributed systems that serve Claude to millions of users globally. The engineer will work across the full inference stack, building intelligent routing, autoscaling, and deployment systems for AI models running on diverse accelerators across multiple cloud platforms. The position emphasizes real-time system resilience, compute efficiency, and close collaboration with research teams to enable next-generation model development.

Anthropic London, United Kingdom £325,000 – £390,000 pa

Security Engineering Manager, London or Lausanne

Lead and scale a security engineering team at the forefront of AI-driven drug discovery, designing and implementing a robust, AI-first security architecture. Translate complex scientific and business objectives into secure, automated systems while enabling high-velocity research in a regulated, cloud-native environment. Collaborate closely with ML researchers, medical teams, and Google/Alphabet partners to secure cutting-edge digital biology platforms.

Isomorphic Labs United Kingdom

Hybrid Permanent

Senior Software Test Engineer

The role involves leading test engineering efforts within a cross-functional product team, focusing on frontend, backend, and mobile applications built on microservices and machine learning. Responsibilities include designing automated test frameworks, driving quality improvements, mentoring team members, and integrating testing into CI/CD pipelines. The engineer will use a mix of open-source and custom tools while advocating for strong test culture and quality practices across teams.

Entrust Portugal

Senior Software Test Engineer

This role involves leading test engineering efforts within a cross-functional team, focusing on designing and implementing automated test frameworks for web, backend, and mobile applications built on microservices and machine learning. The engineer will advocate for quality, mentor team members, and integrate testing into CI/CD pipelines using modern tools and cloud infrastructure. The position emphasizes ownership of test strategy and collaboration with product and engineering to ensure robust, scalable solutions.

Entrust

Senior CPU Performance Developer Technology Engineer

This role involves deep performance analysis and optimization of cloud and HPC CPU workloads on NVIDIA's CPU architecture. The engineer will collaborate with developers, researchers, and internal teams to enhance software stacks and influence next-generation design. Focus includes hands-on benchmarking, code contributions, and driving performance improvements across key applications and frameworks.

NVIDIA Bristol, United Kingdom PLN 292,500 – PLN 650,000 pa

Hybrid Permanent

Senior CPU Performance Developer Technology Engineer

This role involves deep performance analysis and optimization of cloud and HPC CPU workloads on NVIDIA's CPU architecture. You'll collaborate with developers, researchers, and internal teams to enhance software stacks, create optimized reference code, and influence next-generation CPU design. The position requires strong expertise in low-level programming and performance tuning for enterprise-scale applications.

NVIDIA Switzerland PLN 292,500 – PLN 650,000 pa

Postdoctoral Research Assistant in AI

Develop and evaluate novel AI and machine learning methods using large-scale multimodal health datasets to support pandemic preparedness and public health decision-making. Work within a multidisciplinary, international research consortium, contributing to foundation models, predictive analytics, and generative AI systems. Collaborate with clinicians, epidemiologists, and public health agencies to ensure robust, transparent, and reproducible AI tools.

University of Oxford Oxford, South East England, United Kingdom £39 – £47 pa

Contract

Senior AI Engineer

Design and implement end-to-end AI/ML systems using generative AI, LLMs, and agentic frameworks to extract insights from biomedical literature and data. Focus on production-grade reliability, model quality, and collaboration with product and engineering teams to deliver user-facing features. Mentor junior engineers and contribute to a culture of technical excellence and knowledge sharing.

Causaly London, United Kingdom

Hybrid Permanent

Java Developer || More thanmill customers since founding

As a Java Developer, you'll join a collaborative team of 6-8 engineers rebuilding a data-centric system from scratch, integrating AI, and working on cloud-native applications. The role involves designing and re-architecting systems, with a focus on quality engineering and continuous improvement.

Opus Recruitment Solutions South West England, United Kingdom £50,000 – £75,000 pa

Hybrid

Product Specialist Associate

This role involves working closely with prospective and existing customers to ensure a seamless integration of Luminance’s AI technology. Responsibilities include managing Proof of Values, providing expert advice, and designing custom workflows to meet specific client needs. The role offers the opportunity to build relationships with a diverse range of companies and support the sales process.

Luminance London, United Kingdom

Hybrid Permanent

Legal Subject Matter Expert

This is a fantastic opportunity to join Luminance, the pioneer of Legal-Grade™ AI for enterprise. Backed by internationally renowned VCs and named in both the Forbes AI 50 list of ‘Most Promising Private AI Companies in the World’ and Inc....

Luminance Cambridge, United Kingdom

Hybrid Permanent

Principal Microsoft Defender XDR, IRM & Deception Engineer

The Principal Microsoft Defender XDR, IRM & Deception Engineer, working within the Global Information and Cyber Security Defence (ICSD) function, is the technical leader for enterprise cyber deception and unified detection and response across the Microsoft security ecosystem. The role...

WTW London, United Kingdom