Top Software Engineer Jobs in London

The role involves improving Paddle's developer experience by managing backend services, API practices, and SDK development using Go and AWS. You'll collaborate with cross-functional teams to shape user experience and stability in production systems.

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

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 role involves designing cloud infrastructure using Terraform, enhancing developer platforms, and improving operational intelligence while mentoring junior engineers.

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.

Lead the engineering work for search solutions in the merchant dashboard, involving hands-on development, code production, and ensuring system maintainability for efficient operation.

The role involves designing and implementing features, debugging, maintaining documentation, and collaborating with the community in the Mir graphics stack.

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.

As a Senior Software Engineer, you'll shape product features, write backend and frontend code, improve infrastructure, and support integrations in a collaborative environment.

Responsible for setting technical strategy, collaborating across teams on backend systems, ensuring operational reliability, fostering team culture, and developing team talent.

Design, build, and maintain cross-platform desktop apps, SDKs, APIs, and IDE plugins (Windows/Mac) using Java and Python. Collaborate with UX and hardware teams to deliver high-performance developer tools, improve workflows, and drive engineering quality, performance, and scalability.

Design, build, and maintain scalable CI/CD pipelines and automation tools; develop scripts for provisioning/configuration; collaborate with global teams to improve DevOps practices; run workshops; document platforms; and implement monitoring, logging, and security hardening across data centers and cloud environments.

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.

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 Senior Software Engineer at Gousto, you will design scalable solutions, mentor engineers, lead key projects, and ensure system reliability while collaborating closely with stakeholders.

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.

Seeking a Senior Software Engineer with extensive experience in digital products to lead, design, and advise on client projects, emphasizing architecture and agile practices. Must collaborate with teams and clients to deliver high-quality solutions.

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

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.

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

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.

As a Backend Developer at Apron, you will work on feature development, collaborate with teams, implement payment integrations, and design scalable systems.

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