Top Software Engineer Jobs in London

Build and maintain a mission-critical .NET enterprise platform and event-driven microservices. Implement Kafka-based integrations and CDC pipelines, write and tune SQL Server/T-SQL, containerize and deploy with Docker/Kubernetes, use Azure and CI/CD pipelines, diagnose production issues end-to-end, participate in Agile ceremonies, and collaborate with product, QA, DevOps and partners while supporting on-call rotations.

Build and maintain a mission-critical .NET enterprise platform and event-driven microservices. Develop features, integrations using Kafka, tune SQL Server, containerize with Docker/Kubernetes, deploy via GitHub Actions, work with Azure, participate in Agile ceremonies, perform on-call triage and collaborate across product, QA, DevOps and partner teams.

Work on core edge platform solving distributed-systems problems. Design and build production-quality code in C, C++ or Go, use containerized environments (Docker, Kubernetes), collaborate with product and technical leads, perform code reviews, and support team growth.

Design, develop, and maintain scalable web applications using .NET backend and Angular/React frontend. Collaborate on requirements, implement RESTful APIs, optimize performance, debug, maintain documentation, support end-users, and work within CI/CD and DevOps workflows.

Design, develop, customize and integrate Microsoft Dynamics 365 CRM/CE solutions. Build entities, forms, workflows, plugins, reports and dashboards using CRM SDK, C#, JavaScript, ASP.NET and SQL. Troubleshoot issues, estimate implementation approaches, collaborate with stakeholders, document solutions, and mentor junior developers. Banking domain experience preferred.

Design and lead frontend architecture and development for scalable, secure web UIs that integrate with embedded systems and cloud platforms. Build device provisioning, telemetry visualization, and remote management interfaces; optimize performance and accessibility; mentor engineers; collaborate across backend, hardware, and systems teams to deliver end-to-end solutions.

Design and develop scalable, secure frontend web applications for connected embedded systems. Lead frontend architecture, collaborate with backend/embedded teams, implement device provisioning, telemetry visualization, and remote management UIs. Optimize performance, accessibility, and maintainability; mentor engineers, participate in reviews, and drive frontend best practices.

Develop complex distributed systems using Java, Kafka, and Kubernetes. Mentor team members and contribute to all phases of the product lifecycle.

We are seeking an experienced Software Engineer to join our growing technology team focusing on Defence and Cyber Security projects.

Maintain and improve PHP/Laravel applications and contribute to newer Python projects. Ship full-stack improvements, fix production issues, support security/compliance, and own small-to-medium projects while collaborating with the engineering team and participating in code reviews and sprint ceremonies.

Design, implement, and operate scalable systems and services across the full software lifecycle. Build proofs-of-concept, improve automation, maintain reliability and monitoring, participate in on-call duties, and collaborate with cross-functional teams to deliver high-quality software.

As a Full-Stack Engineer, you'll collaborate with the engineering team to design and launch products across the entire stack, from front-end to back-end and infrastructure.

As a Forward Deployed Software Engineer, you will work directly with customers to develop software solutions, utilizing full stack technologies and having autonomy over projects.

Join Uncountable's Implementations Engineering team to build software that integrates R&D lab instruments with their platform, working closely with customers and developing automated data pipelines.

As a Software Engineer at Humaans, you will build end-to-end features, improve infrastructure, and support customers using TypeScript and ReScript in a collaborative development environment.

As a Software Engineer Intern, support the Perception team in developing synthetic datasets for satellite perception and enhance the dataset generation pipeline, including automation scripts and scene generation in a game engine.

The Software Engineer will design, develop, and operate security systems protecting the firm's intellectual property, focusing on cryptographic services and access control, while collaborating with research stakeholders.

We are looking for penultimate year students for a software development internship. Candidates should have a strong foundation in computer science and a passion for quality coding.

As a Data Software Engineer, you will enhance reference data products, establish technical direction, and ensure data quality and compliance within trading systems.

We are seeking a software engineer to build and validate resilient distributed systems, enhance CI pipelines, and improve testing strategies for cloud applications.

The Backend Software Engineer will develop and maintain backend systems for data processing related to coffee farming, utilizing Python and PostgreSQL. Responsibilities include feature development, problem-solving, and adapting systems to regulatory changes while ensuring system resilience.

As a Software Developer, support operational processing systems across various asset classes, ensuring data integrity and compliance while developing applications for post-trade operations.

The Lead iOS Software Engineer will develop and maintain high-quality iOS applications, mentor team members, enhance mobile architecture, and ensure an exceptional user experience in fintech products.

Design and implement features in React Native for SDK and mobile applications, collaborating on technical requirements and enhancing app performance.

Develop and implement reliability features, improve system performance, provide L2 support, and create automation tools for operational stability.