Top Software Engineer Jobs in London

Develop features for the Android application, maintain tests, ensure UX/UI consistency, and uphold code quality following Agile methodologies.

Lead embedded and real-time C++ development for a regulated medical device: design hardware abstraction, device drivers, and data acquisition; define technical strategy; ensure IEC 62304-compliant software quality; collaborate with FPGA/electronics teams; mentor engineers; contribute to risk management and system integration in a safety-critical clinical environment.

Design, build and run scalable, maintainable services in the cloud. Own end-to-end application development, collaborate across product and design, emphasise observability, testing, reliability and high-performance search, pricing and booking systems.

Design, build, and maintain automation and testing infrastructure for the North platform: CI/CD pipelines, GitHub workflows, containerized test environments (Docker/Kubernetes), Helm and ArgoCD deployments, infrastructure-as-code, benchmarking, parallel test execution, and cross-team standards to improve test coverage, reliability, and deployment confidence.

Build and evolve Python-based AI services powering personalised recommendation and conversational experiences. Design and implement evaluation frameworks (including LLM-based evaluation), run experiments and data-driven improvements, integrate AI services with APIs, and improve relevance, consistency, and customer outcomes at scale.

Design, build, and operate scalable Order Management capabilities for checkout, fulfilment, returns, amendments, and cancellations. Own end-to-end features, shape platform architecture, improve integrations and automation, and drive observability, resilience, and operational excellence in a high-volume retail environment.

As a Software Engineer II, you will build and maintain features on Stora's Rails-based platform, improve app stability, and collaborate with a small team on various domains.

As a Software Engineer in Sustaining Engineering, you will resolve complex issues related to Ubuntu and open-source software, engage with upstream communities, and develop bug fixes while maintaining close collaboration with support and product teams.

As a Python and Kubernetes Software Engineer, you will develop data analytics solutions using open source tools, collaborating with a distributed team.

The software engineer will develop and operate backend services for Snap Store and Charmhub.io, focusing on clean APIs and feature implementation.

The role involves developing software for Linux-based systems on autonomous devices, optimizing performance and ensuring reliability in various hardware environments.

As a Software Engineer at Canonical, you will collaborate globally to shape open-source software operations, focusing on Python and Golang development, enhance DevOps workflows, and improve infrastructure operations for cloud computing solutions.

The role involves designing and delivering open source software operations code in Python, ensuring system reliability, and collaborating with teams across the Linux stack.

The role involves designing, building, and deploying cloud-based identity services using a full-stack approach, focusing on authentication and MFA platforms.

Design, build, and own end-to-end order management capabilities for checkout, fulfilment, returns, amendments, and cancellations. Drive platform architecture, integrations, CI/CD, observability, resilience, and operational excellence. Mentor engineers, collaborate with product and fulfilment stakeholders, and continuously improve engineering standards and tooling.

As a Frontend Software Engineer, you'll lead UI development, review code, and mentor colleagues while enhancing usability and optimizing user experience across products at Helsing.

Build and maintain high-throughput, reliable database integrations to replicate data into ClickHouse. Debug production issues, improve observability and reliability, participate on-call, collaborate with customers and cross-functional teams, and influence product roadmap.

The software engineer will develop AI tools for sustainability reporting, collaborating on product strategy and ensuring code quality while leveraging LLMs.

The role involves leading engineering efforts, managing the codebase, developing standards, driving team culture, and improving productivity within a startup aiming to transform local government services.

The Senior Software Engineer will develop backend services, improve back-office systems, tackle market-specific challenges, and maintain high coding standards.

Join Docker's AI engineering team to develop containerized systems for AI agents, enhancing their capabilities and collaborating on the open-source cagent project.

Design, develop and maintain AI-powered software applications. Collaborate with teams, troubleshoot software, and integrate AI algorithms. Stay updated with technology trends.

Design, build, and scale IoT hardware for the Energy Network, ensuring secure connectivity, device security, and integration with cloud services.

As a Senior C++ Software Engineer, you'll architect and develop production-ready drone software, manage flight control systems, and collaborate with teams to enhance system performance.

As a Software Engineer, you'll develop backend services for crypto trading, optimize systems, and collaborate with product teams throughout the development lifecycle.