Top Software Engineer Jobs in London

As a Full Stack Software Engineer, you'll develop and architect user interfaces, manage APIs for data workflows, and improve applications within the Foundry platform, while collaborating closely with users to understand their needs.

Backend Software Engineers at Palantir build and maintain scalable backend services, develop APIs, optimize applications for performance, and collaborate across teams to shape user workflows.

The Forward Deployed Software Engineer at Palantir collaborates with customers to architect and build AI-driven solutions using large-scale data to address critical challenges.

Forward Deployed Software Engineers design solutions for customer challenges, involving architecture discussions, coding, and project execution, while ensuring user impacts are considered.

Senior Software Engineer on the Account Integrity team building scalable backend (80%) and frontend (20%) systems to prevent financial crime. Own system design, CI/CD, distributed systems, databases, and production controls; collaborate with product, data science, and investigations to deliver automated fraud detection and account protection.

Join the Send Core team to own and maintain critical infrastructure for sending transactions, build customer-facing send journey features, drive architectural decisions for reliable, high-performance systems, and contribute backend-first (80%) with some frontend (20%) work while collaborating with product, design, and data teams.

Design, develop, and integrate Python-based risk and PnL systems for Rates trading. Build scalable data pipelines, implement risk metrics and PnL attribution, collaborate with quants, traders, and risk teams, and support front-, middle-, and back-office processing across rates and options products.

Develop and maintain Salesforce platforms and standalone products for Customer Service, Marketing, and Operations. Build Lightning and Visualforce UI, implement Apex (including async), optimize SOQL, integrate REST APIs and Amazon Connect, write automated tests, use migration/CI-CD tools, and apply enterprise-authorized AI-assisted development while ensuring secure, maintainable code.

Lead design, development, and delivery of risk, pricing, trade capture, and commodities operations software. Collaborate with trading, quant, sales, and middle office to produce secure, high-quality production code, provide technical guidance, and drive product and architecture decisions. Promote cross-team collaboration, firmwide engineering practices, and mentor engineers to deliver scalable solutions.

Hands-on lead engineer responsible for designing, developing, reviewing, and shipping secure, production-ready payment systems. Drive architecture, operational stability, automation, vendor evaluations, and mentor engineers while contributing to technical direction and team culture.

Develop and deliver native iOS features for the Nutmeg app using Agile practices. Own tasks end-to-end, write tests, participate in releases and code reviews, troubleshoot defects, contribute to technical initiatives, and collaborate across product, operations, and engineering to improve the codebase and tooling.

Build and maintain front-end features for cloud-native banking applications using React. Collaborate with cross-functional squads, write clean testable code, debug and test, mentor juniors, and apply enterprise AI-assisted development tools while ensuring secure, resilient, and customer-focused delivery.

Design, build, and maintain scalable, secure, cloud-native backend systems using JVM languages. Ensure reliability, performance, and zero-downtime releases; use domain modeling, automated testing, and enterprise AI-assisted tools to improve code quality and delivery.

Design, build and operate cloud-native backend microservices (Java) for banking products. Ensure secure, reliable, scalable systems with strong testing, performance tuning, zero-downtime releases, and production support including incident management.

Lead design, build, and operate cloud-native AWS microservices using Kubernetes. Drive CI/CD, containers, IaC, monitoring, reliability, and incident resolution. Champion AI-assisted engineering practices, mentor engineers, participate in architecture reviews, and optimize platform availability and scalability for low-latency trading.

Designs, develops, tests, and maintains scalable, secure front-end applications using React and TypeScript. Uses AI-assisted development tools responsibly, produces architecture artifacts, improves code quality, debugs complex issues, and creates visualizations from large datasets to drive system improvements.

Design, build, and operate LLM inference backend services focused on routing, batching, scheduling, streaming, and quota management. Implement APIs/SDKs, profile and optimize performance (CPU, memory, network, GPU), improve reliability and observability, support CI/CD-safe deployments, and learn LLM serving fundamentals while applying responsible AI and enterprise-authorized AI-assisted development tools.

Own and maintain core send infrastructure for international payments, build customer-facing send journey features, collaborate with product/design/data, make architectural decisions, ensure reliability and performance, and implement backend-heavy work with some frontend involvement.

Design, build, and support C++ production systems, tools, and workflows for computer vision on Spectacles. Improve reliability and calibration (especially eye-tracking), build evaluation and debugging tools, ensure quality and performance through strong testing, and collaborate with CV, platform, product, and infra teams to productionize research.

Build and operate Kubernetes-based infrastructure and tooling to support development, testing, deployment and scaling of Graphcores ML software. Manage cloud infrastructure, CI/CD practices, and collaborate with software teams to improve reliability and observability of HPC AI platforms.

Design, deploy, and maintain tools and services for build, CI/CD, packaging, and releases. Manage cloud and Kubernetes infrastructure, use IaC, reduce toil, and support junior engineers for reliable ML software delivery.

The Senior Staff Engineer will lead the development of a Risk Assessment Platform, focusing on system optimization, data integrity solutions, and technical leadership.

As a Senior Software Engineer, you'll innovate and maintain scalable systems in a multi-disciplinary Agile team, focusing on sports betting products.

Senior SDET responsible for designing scalable test strategies, building automation frameworks, managing test environments and data, and executing UI and API tests. Collaborate with engineers and cross-functional teams to ensure quality-first delivery across cloud-native, CI/CD-driven projects in financial services.

Lead strategy, architecture and implementation of test automation frameworks for web and mobile. Design and maintain UI, API and service tests, integrate tools into CI/CD, manage cloud testing, run performance and accessibility testing, and mentor engineers to drive quality engineering across projects.