Latest software engineer Jobs

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 closely with researchers and product teams, optimizing infrastructure for large-scale machine learning and developing novel solutions for agentic models.

OpenAI London, United Kingdom

Permanent

Software Engineer, Codex Core Agents

This role involves designing and building the infrastructure that powers Codex agents, focusing on sandboxed execution, orchestration, stateful workflows, and model rollouts. You will work on distributed systems, developer tooling, and AI to ensure Codex is fast, reliable, and secure.

OpenAI London, United Kingdom

Permanent

Software Engineer, Enterprise

Design and scale backend systems for enterprise GenAI products, focusing on reliability, performance, and deployment across hybrid and multi-cloud environments. Build core services and APIs that securely integrate AI models with enterprise data sources. Architect distributed systems for data processing, inference, and orchestration of large-scale AI workloads.

Scale AI London, United Kingdom

On-site Permanent

Software Engineering Intern (Summer 2027)

This internship involves hands-on work on real projects, including building reinforcement learning pipelines, developing evaluation infrastructure, and creating fraud-detection systems. Interns will work closely with experienced engineers and contribute to impactful AI applications.

Scale AI London, United Kingdom

On-site Internship

Software Development Engineer in Test

As a Software Development Engineer in Test, you will focus on designing and building automated test solutions for Medtronic's embedded and connected hardware platforms used in operating rooms. You will collaborate with engineering teams to ensure the reliability, safety, and performance of device software, firmware, and hardware interactions, leveraging modern automation frameworks and continuous improvement practices.

Medtronic London, United Kingdom £58,000 – £87,000 pa

On-site Permanent

Software Applications Engineer

This role involves designing and implementing software solutions for underwater robotics, focusing on the next generation of underwater vehicles. Responsibilities include developing new software, supporting existing codebases, and working with a range of technologies including C++, control software, and web technologies.

Saab Fareham, United Kingdom

On-site Permanent Clearance Required

Senior Software Engineer

Design and maintain large-scale, distributed backend systems for automated in-store order fulfilment using Java/Scala and cloud technologies. Embed AI tools like GitHub Copilot into development workflows and lead technical initiatives from design to deployment. Work within an agile team to improve processes, support production systems, and mentor engineers while delivering customer-focused solutions at scale.

Ocado United Kingdom

Hybrid Permanent

Senior Software Engineer – C++ / Video Processing

As a Senior Software Engineer, you will develop high-performance video and AI processing pipelines for use in the operating room, leveraging hardware acceleration and working in a multidisciplinary team to ensure robust and safe-by-design software for medical devices.

Medtronic London, United Kingdom £76,800 – £115,200 pa

Staff Software Engineer - Backend

Design and build high-performance, reliable backend services for a large-scale data and AI platform. Work on distributed systems, cloud storage integration, and reliability improvements as part of a foundational engineering team. Focus on solving complex technical challenges across product and infrastructure layers in a fast-growing environment.

Databricks London, United Kingdom

On-site 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

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 II

This role involves leading the design and implementation of complex, cloud-native banking systems, driving technical direction across engineering teams, and mentoring senior engineers. The engineer will solve highly ambiguous problems, improve operational processes across production environments, and help shape company-wide standards in security, scalability, and developer velocity using modern technologies including AI tools. Collaboration with leadership and cross-functional stakeholders is key to delivering long-term platform vision.

Thought Machine Lisbon, Portugal

On-site 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