Latest Software Engineering Jobs

Member of Technical Staff, Agent Code

Develop and scale cutting-edge code-generating large language models and autonomous agent systems for enterprise applications. Conduct research, implement novel algorithms, and build production-ready frameworks using state-of-the-art compute infrastructure. Collaborate closely with researchers and engineers in a fast-paced, innovation-driven environment focused on advancing AI capabilities.

Cohere London, United Kingdom

Hybrid Permanent

Senior Member of Technical Staff, Safety and Security for Agents

This role focuses on improving the safety, fairness, and trustworthiness of next-generation large language models that interact with external resources and take autonomous actions. You'll design and implement data generation strategies, post-training algorithms, and evaluation methods, working closely with ML, policy, and product teams. The position emphasizes hands-on experimentation, statistical rigor, and responsible AI practices in a highly autonomous, research-driven environment.

Cohere London, United Kingdom

Hybrid Permanent

Lead Data Scientist /Deep Learning Practitioner

Lead the development and deployment of deep learning models to enhance underwriting capabilities using non-traditional and multi-modal data. Design and train neural networks such as LSTMs, RNNs, and Transformers, and translate research prototypes into production systems. Collaborate with stakeholders to align technical innovation with business outcomes and mentor junior team members.

Capital One Boultham, Lincolnshire, LN6 7TG, United Kingdom

Lead Data Scientist /Deep Learning Practitioner

Lead the development and deployment of deep learning models to enhance credit underwriting, using non-traditional data and advanced neural networks. Translate R&D into production systems while mentoring junior scientists and collaborating with stakeholders. Work across structured and unstructured data, including time series and text, to deliver predictive insights.

Capital One Leicester, Leicestershire, United Kingdom

AI Engineer - Startups & Partnerships - Citi

As an AI Engineer on Citi's Startups & Partnerships team, you will build and deploy production-grade AI applications, evaluate emerging AI technologies, and integrate solutions across the enterprise stack. You'll work closely with business stakeholders and startups to rapidly prototype and deliver impactful AI solutions at a global scale.

eFinancialCareers Belfast, United Kingdom

Principal Data Scientist - Aristocrat

This role involves leading end-to-end data science initiatives to enhance player engagement, retention, and monetization in social casino games. The Principal Data Scientist will develop machine learning and reinforcement learning models, drive scalable experimentation, and translate complex insights into product decisions. They will also provide technical leadership, mentorship, and collaborate across engineering, MLOps, and game teams to build data products and improve decision-making frameworks.

eFinancialCareers London, United Kingdom

CFD Multiphase & DEM Engineer

Develop and validate high-fidelity multiphase CFD models for industrial applications in bioprocess and chemical engineering, integrating with AI-driven simulation workflows. Work across the full simulation lifecycle—from CAD and meshing to solver development, HPC execution, and experimental validation—while collaborating directly with clients to solve complex engineering challenges. Focus on scalable automation, surrogate modelling, and data pipelines to enable AI-enhanced design optimisation.

PhysicsX United Kingdom

Hybrid Permanent

Delivery Engineer

A Delivery Engineer acts as a technical liaison between customers and internal teams, translating complex engineering and physics challenges into actionable product opportunities. The role involves guiding customer onboarding, managing delivery teams, and identifying new value-creation opportunities by aligning AI-driven simulation solutions with real-world industry needs. Success requires blending technical understanding of AI and engineering systems with strategic account growth and customer success principles.

PhysicsX United Kingdom

On-site Permanent

Software Engineer, ChatGPT Infrastructure

Design, build, and operate reliable, scalable systems supporting AI products like ChatGPT and the OpenAI API. Focus on performance optimization, system resilience, automation, and developer experience across distributed infrastructure. Collaborate with research, product, and engineering teams to improve reliability, scalability, and observability at global scale.

OpenAI London, United Kingdom

On-site Permanent

Software Engineer

This role involves building and scaling the Frontier Decision Intelligence platform, focusing on creating enterprise-grade AI solutions for high-impact sectors like healthcare and life sciences. You'll work across full-stack development with Python and TypeScript, designing APIs and SaaS user experiences while collaborating in cross-functional squads. The position emphasizes technical ownership, scalable architecture, and solving complex real-world problems using state-of-the-art tools and practices.

Faculty AI London, United Kingdom

Hybrid Permanent

Software Engineer, Agent Infrastructure

This role involves building and scaling systems to train highly capable AI agents and deploying them to millions of users. You will work on optimizing large-scale compute clusters, developing APIs, and collaborating with research teams to push the boundaries of AI infrastructure.

OpenAI London, United Kingdom

Permanent

Software Engineer

As a Software Engineer at Quantexa, you will work on the Decision Systems team, developing tools and platforms that transform complex data into actionable insights. Your responsibilities will include building new tooling for detection logic, enhancing scoring capabilities, and improving system performance. You will collaborate closely with product teams and stakeholders to deliver impactful solutions.

Quantexa London, United Kingdom

Hybrid Permanent

Electronics / Software Engineer

This role involves designing and implementing embedded systems across diverse domains such as robotics, defence, and consumer products. You'll work on hardware and software development, including C programming, FPGA design, PCB design, and system integration, within multidisciplinary teams solving high-impact technical challenges. The position emphasizes innovation, client interaction, and continuous learning in a fast-paced consultancy environment.

Cambridge Consultants United Kingdom

On-site Permanent Clearance Required

Senior Software Engineer, Chem-Bio

Design and build robust platform systems to support AI research on chemical and biological risks, translating complex research needs into scalable infrastructure. Develop evaluation frameworks, LLM-based agent systems, and shared tooling in Python, collaborating closely with interdisciplinary researchers. Drive engineering excellence through architecture, mentorship, and infrastructure improvements within a government-embedded technical team.

AI Security Institute London, United Kingdom

On-site Permanent Clearance Required

Lead Software Engineer

Lead the technical direction of AI and machine learning projects, designing production-grade systems and guiding cross-functional teams. Drive architectural decisions, mentor engineers, and deliver innovative solutions for clients in the energy and sustainability sector. Focus on reusable tools, scalable infrastructure, and high-impact delivery in a fast-paced environment.

Faculty AI London, United Kingdom

Hybrid Permanent