Top Software Engineer Jobs in London

Lead design and delivery of production-grade AI/ML and agentic solutions for the LLM Suite platform. Own architecture, implementation, and operational stability using public cloud services and agentic frameworks. Build GenAI services, integrate LLMs, ensure secure high-quality code, and improve platform scalability and reliability through collaboration and communities of practice.

Lead technical direction for cloud platform engineering, design and operate Kubernetes-based platform services, automate CI/CD and developer self-service, enforce security and IaC standards, provide production incident leadership, evaluate vendors, and mentor engineers while driving adoption of AI-assisted engineering practices and operational reliability.

Lead integration and DevOps work for a low-latency equities onboarding team: participate in requirements, design, development, production rollouts, integration testing, release management, and automation using Linux, Python, shell scripting, networking and FPGA technologies to ensure stable, high-quality deliveries.

Lead design and deliver cloud-native backend microservices with reliable, secure, and scalable architectures. Build and test end-to-end solutions, operate production systems, drive AI-assisted engineering practices, coach engineers, manage stakeholders, and ensure high availability, performance, and secure data handling across the product lifecycle.

Lead and line-manage a squad of engineers to design, implement and operate payments-related microservices on cloud. Hands-on coding, code reviews, mentoring, and collaboration with product and senior engineers. Drive CI/CD, automated testing, system health metrics, and adoption/governance of enterprise AI-assisted engineering practices with a focus on secure, compliant, and measurable outcomes.

Lead development of Java/Spring Boot microservices for J.P. Morgan Personal Investing. Design and evolve cloud-native, event-driven architectures on Kubernetes using Kafka, deliver features from estimation to production, write tests, participate in code reviews, maintain monitoring/alerting, and drive adoption of enterprise-authorized AI-assisted engineering practices and SDLC automation.

Lead front-end development using React and TypeScript to build scalable, performant B2C and B2B features. Drive code quality, testing, and cross-functional delivery within squads. Champion enterprise-authorized AI-assisted engineering practices, SDLC automation, and responsible AI standards while mentoring teammates and contributing to technical decisions.

Lead design and deliver high-performance, low-latency trading services. Build secure, observable, resilient microservices, drive architecture, incident response, CI/CD, AI-assisted engineering adoption, and mentor engineers.

Lead development and architecture of KDB-based data systems for real-time and historical market data. Design, build, test, and operate resilient, high-performance KDB applications; drive SDLC improvements, CI/CD, and automation; mentor and lead teams, capture requirements, and partner with stakeholders and support teams during AWS migration and greenfield projects.

Lead engineering efforts for the Equity Derivatives trading platform: design, build, and troubleshoot Java/JVM microservices, adopt AI-assisted engineering practices, collaborate with traders, quants, product and production teams, and drive CI/CD, resiliency, and secure development across the Agile delivery lifecycle.

Build and maintain a centralized risk platform that unifies data and decision-making across identity, fraud, and compliance. Develop foundational backend services, enable product teams to ship safely at scale, and collaborate with risk and product stakeholders to reduce fraud and improve trust.

As a Rust Software Engineer, you will design, deliver, and maintain production features, collaborating directly with users and working on live trading systems.

As a Software Engineer on the Agent Engineering team, you'll design and build AI agents to enhance customer interactions, collaborating with various industries and addressing complex challenges.

As an Entry Level Software Developer, you will assist in developing mobile or web applications, participate in code reviews, and research new technologies.

Develop and maintain security-focused cloud services and infrastructure, design APIs and backend systems, integrate with embedded platforms, fix bugs, write automated tests, and apply cloud and secure software best practices to ensure scalable, reliable, and secure operation.

The Senior Backend Software Engineer will design, build, and maintain scalable backend systems. Responsibilities include collaboration with teams, API implementation, and ensuring best practices in software engineering.

As a Software Engineer, you'll develop and enhance core analytics libraries using C++ and Python, collaborate with quants and traders, and ensure high-quality software delivery.

The Platform Engineer will enhance and scale Lovable's developer experience, focusing on improving engineering workflows, building application frameworks, and maintaining observability across teams.

The Software Engineer will develop AI-powered features for managing requirements in engineering, integrating language models, and maintaining infrastructure. Responsibilities include building workflows and collaborating with product teams to enhance system design processes.

As a Software Engineer II at American Express, you will build and maintain software for payment systems, ensuring quality and supporting deployment while automating processes. You will engage in code reviews, debugging, and scaling applications based on demand.

The Full Stack Developer role involves building and maintaining web applications using Angular and C#, contributing to UI architecture, backend services, and engaging with business teams for requirements and solutions.

Design, develop and deliver enterprise-grade software and AI-powered analytics for financial markets. Build full-stack solutions with CI/CD, automated testing and cloud deployments (AWS/Azure). Collaborate across regions, solve complex problems, and continuously learn new technologies to improve customer-facing data and analytics products.

As a Software Engineer in Infrastructure Reliability, you'll design and build resilient systems, optimize performance, improve automation, and collaborate with teams to enhance infrastructure reliability.

You will lead complex projects involving Python systems, collaborating with sales teams, mentoring developers, and ensuring operational support for trading systems.

Develop and enhance Neo4j's core network server modules and drivers, design and implement features for the Bolt and HTTP protocols, collaborate with product managers and stakeholders on protocol direction, and contribute to community outreach such as blog posts and training.