Top Software Engineer Jobs in London

As a Senior Software Engineer, you will develop secure, scalable medical imaging platforms, architect distributed systems, and work with AI diagnostic tools.

Lead and deliver iOS features, improve architecture and code quality, review and mentor engineers, plan projects, ensure operational readiness, collaborate across teams, and participate in hiring and team growth.

As a Senior Software Engineer, you'll improve code architecture, lead projects, and collaborate with teams to enhance productivity and technical execution.

The Senior Software Engineer will develop analytics applications using React and Next.js, ensure performance in Azure environments, and collaborate with cross-functional teams.

Lead design, architecture and implementation of the STIRT front-to-back trading platform. Partner with traders, quants and stakeholders to modernize systems, drive low-latency pricing/workflows, adopt AI/ML, manage a global engineering team, and deliver resilient, observable, high-performance trading technology.

The Lead Software Engineer will drive technical excellence, mentor engineers, shape architecture, and lead high-impact projects while remaining hands-on in development.

You will be the first engineering hire responsible for developing a real-time AI decision-making platform for airport operations using Python and TypeScript, focusing on fault-tolerant agentic systems.

As a Staff Software Engineer, you will develop user-facing features, focus on performance and usability, and collaborate with designers and product managers on high-quality code, owning features end-to-end.

Architect and build backend systems managing billions of data points, ensuring high performance for machine learning workflows, and scaling infrastructure during hyper-growth.

The Senior Go Developer will design, implement, and maintain scalable microservices, integrating with Kafka, while ensuring high availability and fault-tolerance.

As a Senior Software Engineer at Ohme, you will enhance the backend infrastructure using Kotlin, contribute to technology strategies, mentor team members, and keep up with industry trends.

The Lead Software Engineer will develop AI-powered software, focusing on backend systems, APIs, microservices, and collaborating in agile teams to deliver technical solutions.

Design and build the C++ integration layer for TV audio/video playback, integrate with native media frameworks (AVPlayer/ExoPlayer), own buffering/ABR/A-V sync, debug performance across OS and hardware, improve tooling and observability, and collaborate with platform and device teams to raise playback quality.

Build, test and ship growth-focused user journeys and subscription funnels across web and app. Design and run experiments, implement instrumentation and tracking, own features end-to-end, collaborate with product/design/data, and improve CI/CD, testing and release workflows to increase conversion and engagement.

Lead growth-focused engineering work: implement and maintain ad tracking SDKs/MMPs, build tracking/tag manager setups, design and ship full-stack growth features, integrate CRM/lifecycle tooling, build internal automation tools (Python/Node), and collaborate with Growth, Marketing and Data to run experiments and A/B tests.

Lead complex projects, develop scalable software solutions, mentor junior engineers, and ensure high standards of quality, performance, and security in game features.

The role involves designing, implementing, and deploying a core trading platform in C++. Responsibilities include troubleshooting and collaborating with cross-functional teams to enhance trading systems.

The Software Engineer will design, develop, and maintain software components for Windows Endpoint protection while collaborating within an Agile team.

Design, architect, and implement full-stack features for a multi-component platform using TypeScript/React and Node.js. Improve performance, security, and scalability of microservices on AWS, write and maintain documentation, own complex features, apply TDD and REST API best practices, and mentor other engineers.

Design and deliver scalable, secure .NET microservices for real-time sports forecasting. Lead technical design, ensure code quality and testing, work with Redis, Kafka, SignalR, Kubernetes, Docker, and CI/CD. Mentor engineers and collaborate cross-discipline to meet product goals.

Design, build, and lead development of AppGlass features; develop AI-first tooling and automation; implement enterprise integrations and deployments across Kubernetes and cloud; and improve reliability, testing, performance, and security for production use.

Develop and maintain foundational Kotlin core libraries used by many developers; contribute to language features, tools, and specifications; participate on a design committee; become domain expert in CS topics; write design documents; focus on API design and performance engineering.

Build and maintain scalable graph-based search services using Java and Spring Boot. Design GraphQL and REST APIs, integrate with databases and AWS services, ensure monitoring and reliability, mentor engineers, and collaborate with product teams to deliver advanced search and recommendation features.

Build and ship features for DeepEditor and TrueSync across the full stack. Collaborate with science, product, and creative teams to design scalable, reliable AI-powered editing and localization systems. Drive projects from concept to production, improve performance and quality, mentor engineers, and influence architecture and engineering practices.

Lead backend platform development for National Security clients using cloud technologies, ensuring operational responsibility and agile practices.