Top Software Engineer Jobs in London

Design, implement, and optimize real-time embedded firmware for DSP cores and MCUs (RISC-V/Arm). Develop drivers, RTOS components, bring up hardware, create test strategies, use JTAG/trace tools for debugging, collaborate cross-functionally, and produce documentation and code reviews to ensure performance, determinism, and producibility.

Design, implement, and optimize real-time embedded firmware for DSP cores and MCUs (RISC-V/ARM). Bring up hardware, develop drivers and RTOS components (e.g., Zephyr), build and run tests including hardware-in-the-loop, use JTAG/SWD and trace tools to debug and profile, and collaborate cross-functionally while producing documentation and participating in code reviews.

As a Senior Software Engineer, you'll design and operate production-grade AI systems for automating business processes, ensuring reliable performance and governance in enterprise solutions.

The role involves open-sourcing models and maintaining libraries, optimizing performance, and collaborating with the open-source community. Requires expertise in machine learning and strong programming skills.

As a Software Safety Engineer, you will assess medical AI systems, ensure compliance with safety standards, and collaborate with multidisciplinary teams to improve regulatory processes.

The Senior Software Engineer will lead projects, improve code architecture, ensure operational readiness, and collaborate with teams while contributing to technical execution and mentorship.

As a Principal Software Engineer, you'll lead backend and IoT engineering for Defence projects, ensuring high-quality software delivery while mentoring engineers and implementing robust CI/CD processes.

As a Senior Software Engineer at NewDay, you'll design, develop, and maintain software solutions, mentor junior engineers, and contribute to system architecture decisions while leading complex projects.

The Senior Software Engineer will lead the delivery of software projects, practice TDD, mentor developers, and influence technical direction while writing code and collaborating with clients and teams.

The role involves architecting 3D object detection models, managing data pipelines, developing datasets for training, and mentoring junior engineers.

The Senior/Staff Software Engineer, AI will develop AI-powered features, design backend services, and optimize workflows, ensuring integration and user experience. The role requires collaboration across teams to innovate and improve AI applications.

As a Lead Software Engineer, you will develop solutions for complex business problems, focusing on a fully automated platform in the margin and collateral domain, while fostering a strong engineering culture.

As a Software Development Engineer III, you will enhance payment intelligence products, improve customer experience, and lead growth initiatives.

As a Software Development Engineer II, you will develop and maintain web services for navigation solutions, ensuring reliability and performance while collaborating with the team.

The Senior Software Engineer will focus on backend development, designing and maintaining APIs and services, collaborating on features, and enhancing integrations at Motion.

As a Junior Software Engineer, support development and reliability of Fogsphere’s AI platform, focusing on Python, JavaScript, CI/CD, and infrastructure reliability.

Lead Staff Software Engineers manage projects and teams, guiding technical direction and strategy while contributing to software development at scale.

Lead the development of AI/ML infrastructure for simulations, collaborating with teams on model scaling, system design, and mentoring junior engineers.

Lead Android architectural strategy and cross-team platform initiatives. Drive modularisation, CI/CD and developer experience improvements, set performance and reliability standards, and coach senior and mid-level engineers while partnering with product, design, QA, backend and analytics to deliver scalable Android experiences.

Lead technical design and architecture for Verifone's global payment gateway backend. Drive microservice architecture, ensure security and scalability, mentor engineers, own system reliability and performance, and remain hands‑on with Java/Spring Boot services and MongoDB in a high‑availability payments environment.

Design, build, and operate high-performance, secure backend microservices for a global payment gateway using Java and Spring Boot. Collaborate with platform and infrastructure teams to ensure scalability, reliability, and security across regions; implement APIs, data models (NoSQL/MongoDB), testing, and CI/CD practices.

Develop and maintain backend services using TypeScript and Node.js, focusing on scalable event-driven architecture and modern microservices practices while collaborating with teams to solve complex business problems.

As a Senior Software Engineer, you'll design and deliver scalable microservices, ensure code quality, mentor engineers, and tackle complex systems challenges in sports forecasting products.

The Senior Software Engineer will lead end-to-end development on energy systems, focusing on technical mastery, team collaboration, and mentoring, while contributing to ongoing energy transformation projects.

Responsible for managing the lifecycle of accelerator capacity, developing AI infrastructure, and driving cross-team initiatives while ensuring operational excellence and mentoring engineers.