Top Software Engineer Jobs in London

11-week internship building high-performance research platforms and trading tools. Work in small teams on distributed systems, NLP/ML applications, and web frameworks while collaborating with senior engineers.

As a Software Engineer at Legora, you will build and implement features for a web platform, maintaining code quality and mentoring junior colleagues.

The Software Engineer develops solutions for complex projects, leads application architecture planning, collaborates with teams, and mentors junior members, ensuring quality and efficiency in software delivery.

Design, build, and own backend pricing services end-to-end for Personal & Business products. Contribute to architecture, code reviews, reliability, scalability, observability, incident response, and collaborate with product, compliance and stakeholder teams to enable pricing features and experiments.

Build and maintain customer-facing single-page web applications using React. Deliver end-to-end features, fix defects, write tests, participate in code reviews, produce documentation, and collaborate with cross-functional teams while considering accessibility, security, observability, and performance.

Design, develop, test, and maintain real-time, high-performance pricing, trading, and risk systems for Credit Trading. Collaborate across the SDLC, integrate Python and Java analytics, follow best practices (testing, code review), troubleshoot, and ensure secure, stable, and scalable applications.

Work onsite with NATO customers to design and implement data-driven software solutions. Own end-to-end projects: architect systems, wrangle large-scale data, build web apps, collaborate with technical and non-technical stakeholders, and iterate rapidly in high-stakes environments.

Lead and mentor an agile team to design, develop, secure, and operate scalable cloud-native applications using modern front-end tech and AI-assisted engineering practices; drive automation, code quality, resiliency, and operational stability.

The Senior Backend Software Engineer will design, develop, and maintain scalable backend services, optimize applications, build APIs, and collaborate across teams to improve user workflows and product efficiency.

The Senior Backend Software Engineer collaborates in teams to design and build scalable infrastructure systems, optimizing data-driven applications across sectors.

The Senior Front End Software Engineer will architect and develop user interfaces for data-intensive applications, mentor peers, and engage directly with users to improve product features.

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.

As a Software Engineer on the Apollo platform, you'll build and maintain systems for software deployment, solve customer issues, debug complex problems, and collaborate across teams.

Backend Software Engineers at Palantir build scalable software solutions, collaborate across teams, and develop systems for data processing and storage, enhancing product capabilities.

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.

Lead design and implementation of scalable backend and frontend systems, own domains end-to-end, set technical strategy and architecture, mentor engineers, drive cross-team initiatives, and improve reliability, performance, testing, monitoring, and CI/CD for customer-facing microservices.

The Senior GenAI Software Engineer will architect AI systems for ad creatives, prototype solutions, and mentor teams while driving innovation in generative AI applications.

Build and maintain a multi-tenant, serverless B2B Digital Showroom on GCP using Node.js, React, and Next.js. Design scalable, low-latency distributed systems, deliver high-quality code with automated testing, investigate customer issues, collaborate cross-functionally, and grow into a senior engineering role through code reviews, pairing, and technical leadership.

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.

Design, build, test, and maintain scalable full-stack web applications and integrations using Java, Python, and React. Implement AI-enabled features, event-driven data pipelines, and marketing integrations (CDP/CRM/CMS). Improve code quality via AI-assisted tools, CI/CD, observability, and security/compliance best practices while collaborating with product, marketing, and partners.

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.

Design, build, and operate secure, high-quality full stack software in an agile team. Develop and review production code (frontend and backend), support lifecycle and incident management, analyze data for improvements, and apply CI/CD, resiliency, and secure coding practices while leveraging enterprise-authorized AI-assisted development tools.

Design and build scalable, reliable, and secure cloud-native services using JVM languages. Apply domain modeling, optimize data access and performance, ensure zero-downtime releases, promptly resolve issues, and continuously evolve technology and operational patterns. Mentor teammates and leverage enterprise-authorized AI-assisted development tools while following secure, resilient engineering practices.