Latest software engineer Jobs

Software Engineer, Platform Systems

Design and build distributed failure detection, tracing, and observability systems to ensure reliable, efficient training of large-scale AI models. Develop tooling to identify performance bottlenecks and faulty nodes across OpenAI’s custom supercomputing infrastructure. Collaborate closely with research and systems teams to evolve platform capabilities for frontier AI workloads.

OpenAI London, United Kingdom

Permanent

Software Engineer, Integrity Foundations - London

Design and build scalable systems to detect, track, and enforce responses to harmful use of AI technologies. Collaborate with cross-functional teams including policy, legal, and data science to combat abuse at scale. Leverage cutting-edge AI tools to automate harm detection and enhance platform integrity.

OpenAI London, United Kingdom

Permanent

Senior Software Engineer

Design and develop scalable AI-driven decision intelligence solutions as part of a cross-functional team, integrating advanced AI agents into enterprise systems. Focus on building and extending a unified platform using Python and TypeScript, with direct impact in healthcare and life sciences. Lead technical delivery, mentor junior engineers, and collaborate on system architecture and automated testing.

Faculty AI London, United Kingdom

Hybrid Permanent

Senior Software Engineer I

This role involves leading the design and implementation of complex, cloud-native systems within a high-growth fintech environment. The engineer will drive technical direction, mentor senior teams, and solve ambiguous, large-scale problems across distributed services. Emphasis is placed on operational excellence, cross-team collaboration, and advancing Thought Machine's core banking platform through innovation in architecture and developer practices.

Thought Machine London, United Kingdom

On-site Permanent

Senior Software Engineer (Python)

This role involves prototyping and developing innovative cybersecurity solutions using AI, with a focus on enhancing Darktrace’s platform to detect and respond to unknown threats. You’ll work in a cross-functional R&D team, balancing creative exploration with structured development of scalable features. The position emphasizes ownership of novel projects, collaboration, and advancing core capabilities in Python and containerized environments.

Darktrace Cambridge, CB2 3BJ, United Kingdom

Senior Software Engineer

Design and govern software architecture and CI/CD pipelines for safety-critical autonomous and robotic systems, integrating control, computer vision, sensor fusion, and simulation platforms. Support system integration and field trials with military users while ensuring scalable compliance with defence standards. Work in a hybrid setup with flexible hours and early Friday finishes.

KO2 Embedded Recruitment Solutions Heddon on the Wall, Northumberland, United Kingdom £60,000 – £70,000 pa

AI Software Engineer

This role involves designing and deploying AI agents capable of automating penetration testing tasks such as planning, tool use, and vulnerability identification. The engineer will build sandboxed cyber-lab environments using containers and Kubernetes, integrate security tools, and enhance agent performance through prompt engineering and cost optimisation. Collaboration with security researchers is key to translating offensive techniques into agent behaviours, within a scalable, polyglot production system.

Infosec London, United Kingdom £150,000 – £180,000 pa

Senior Software Engineer 1 (MLOps)

We’re Aioi R&D Lab - an AI tech hub in one of the fastest-growing insurance companies. We research and develop AI systems that catapult insurance from a slow-moving, traditional past into a data-driven, technology-lead and society-defining future.We’re looking for dynamic,...

Aioi Nissay Dowa Europe Oxford, Oxfordshire, United Kingdom £81,322 – £112,488 pa

Senior Software Engineer (Infrastructure)

This role involves designing and building infrastructure tooling to support scalable, secure, and highly available deployment processes for a modern core banking platform. The engineer will develop automation, observability, and orchestration systems, working closely with data and streaming platforms in cloud environments. A key focus is enabling reliable operations for both internal engineers and bank SREs through robust tooling and CI/CD integration.

Thought Machine Lisbon, Portugal

On-site Permanent

Principal Software Engineer

Design and develop software solutions for Workload Identity challenges, spanning prototyping to production, with a focus on security, networking, and cloud technologies. Collaborate with internal and external stakeholders to guide technical direction and implementation. Work within a close-knit engineering team to shape product development and mentor peers.

Palo Alto Networks London, United Kingdom

Hybrid Permanent

Senior Software Engineer

This role involves leading software development across AI and computer vision projects, from research through to deployment, within multidisciplinary teams. The engineer will contribute to product and service development, including AI Assurance, and provide technical leadership in design and architecture. Emphasis is placed on innovation, continuous improvement, and delivering engineering solutions for clients in complex technical domains.

Synoptix Gloucestershire, United Kingdom £51,000 – £60,500 pa

Staff Software Engineer, Continuous Integration

This role involves designing and maintaining large-scale continuous integration infrastructure to support rapid, reliable code deployment across multiple cloud environments. The engineer will build intelligent test selection systems, improve CI reliability through flake detection and automation, and enhance developer productivity with scalable tooling. The position operates within a high-impact research and product environment focused on safe and steerable AI systems.

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

Staff Software Engineer, Infrastructure (Distributed Systems)

This role involves leading the design and implementation of large-scale distributed systems that support AI model training, serving, and security. You'll drive architectural decisions, improve reliability and scalability, and collaborate closely with research and product teams to evolve infrastructure in line with evolving needs. The position emphasizes technical leadership, operational excellence, and mentoring within a high-impact AI research environment.

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

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Senior Software Engineer, Data

Design and build large-scale, distributed data transfer pipelines for petabyte-level sensor data from global partners, using Flyte, Kafka, and Azure. Develop reliable, observable systems with Terraform and Python, supporting Wayve's AI model training at scale through a hub-and-spoke data exchange architecture.

Wayve London, United Kingdom

Senior Software Engineer

Design and govern software architecture and CI/CD pipelines for safety-critical autonomous and robotic systems, integrating control, computer vision, sensor fusion, and simulation. Work closely with R&D and military end users during field trials. Balance rapid prototyping with scalable, compliance-ready architecture.

KO2 Embedded Recruitment Solutions Northumberland, United Kingdom £60,000 – £70,000 pa