Top Software Engineer Jobs in London

Build and scale a next-generation data platform (mondayDB 3.0). Design architecture, implement backend-heavy full-stack features, collaborate with product and design, ensure CI/CD delivery, and improve performance and engineering practices for large-scale, user-facing systems.

The Forward Deployed Software Engineer will work with clients to build and maintain applications that solve business problems, enhance workflows, and drive value quickly. The role emphasizes collaboration, independent problem-solving, and a focus on customer success.

Seeking a Senior Software Engineer for the Beacon Core Engineering team to design, build, deploy, and maintain software tools and assist clients using AI agents, focusing on quality code and collaboration.

Lead end-to-end development of 0-to-1 fintech products: partner with executives, architect pragmatic full‑stack solutions, evaluate and implement AI capabilities, prototype rapidly, and bootstrap scalable product foundations for incubation.

Lead end-to-end design and rapid delivery of 0-to-1 fintech products with the Founders' Lab. Collaborate with executive leadership to define product direction, build MVPs, deploy to live users, iterate quickly, and balance rapid experimentation with sound backend architecture and occasional frontend/API work. Operate as a product-minded senior engineer in high-ambiguity, fast-paced environments.

Design and build multi-tenant, high-scale embedded finance infrastructure. Own cross-domain features, architect enterprise integrations, lead multi-team initiatives, and collaborate with Product, Design, Compliance, and Sales to deliver production-grade, scalable systems.

Design and build multi-tenant, high-scale payments infrastructure and cross-domain product features. Architect integrations for enterprise customers, ensure production excellence, performance and scalability, and lead multi-team initiatives while collaborating with Product, Design, Compliance, and Sales.

Senior backend engineer for Account Communications building and evolving a platform that delivers millions of customer messages daily. Improve delivery reliability, scalability, cost efficiency, and tooling; design asynchronous, reliable microservices; ensure accuracy and regulatory compliance; write clean, well-tested code and collaborate with product teams to improve user experience.

The Senior Software Engineer for Billing will architect and develop invoicing and tax systems with a focus on automation, integration, and performance. They will lead the technical vision, mentoring teammates, and collaborate with cross-functional teams to enhance the billing experience.

Design, build, and maintain high-quality software while collaborating with teams and utilizing AI agents to enhance development processes.

The role involves designing, building, and maintaining high-quality code with a focus on mathematical algorithms for financial systems, mentoring junior engineers, and collaborating with cross-functional teams.

Lead the technical strategy for Samsara's Sustainability products, designing data-intensive systems to improve fuel and electric vehicle energy efficiency. Mentor engineers and drive technical decisions on sustainability initiatives.

Join CrowdStrike as a Senior Software Engineer to lead the development of innovative endpoint security solutions across multiple platforms, focusing on the sensor's kernel-level functionality and system performance.

Develop and maintain scalable cloud ecosystems using Golang and Python, enhancing backend microservices and collaborating within a fast-paced team.

As a Staff Software Engineer, lead the design and implementation of secure, large-scale software solutions while mentoring junior engineers and driving consensus in complex technical challenges.

As a Senior Software Engineer, you will design and implement solutions, mentor junior engineers, and ensure the reliability and scalability of systems.

Design, build, and operate highly scalable real-time streaming microservices and data pipelines (Java/Python/Go) using Kafka, Flink/Spark on Kubernetes across multi-cloud and on-prem. Own design, deployment, monitoring, observability, and on-call support while improving platform reliability and developer experience.

Design, architect, and develop scalable Go-based microservices and REST APIs for threat detection, case management, and incident response. Lead system design, own technical initiatives, mentor engineers, integrate AI/LLM capabilities, operate cloud-native services on Docker/Kubernetes and cloud platforms, participate in on-call rotation, and drive reliability and architectural improvements.

Design and develop technology solutions in partnership with global teams, addressing challenges in cancer care through innovative software engineering practices.

Contribute to enhancing ScienceDirect's cloud-hosted applications. Collaborate in an Agile team to design, develop and deploy software solutions.

Design and evolve core banking services, ensuring scalability, resilience, and security while influencing technical direction and mentoring team members.

The role involves developing digital solutions, leading teams in Agile and DevOps environments, and mentoring while ensuring high-quality Java-based systems development and testing.

As a Junior Backend Software Engineer, you will design and implement scalable backend services, collaborate on features, and optimize performance while gaining mentorship and experience in a supportive environment.

As an AI/ML Software Engineer, you'll develop systems that transform audio and video data into structured insights, focusing on prompt engineering, agent systems, and model optimization.

As a Software Engineer, you will design and manage cloud infrastructure, enhance DevOps practices, and collaborate with teams to drive innovation in drug discovery.