Top Software Engineer Jobs in London

Designs, develops, and optimizes distributed computing solutions across HPC, Kubernetes, and cloud environments. Builds software in C++, Python, and Go; deploys applications using Kubernetes and HPC/grid technologies; and applies generative AI and observability tooling to improve monitoring and performance. Collaborates with cross-functional teams to deliver secure, scalable compute platforms.

Build and scale AI agent systems that autonomously execute workflows and integrate with enterprise data, services, vector databases, search systems, and external APIs. Develop backend infrastructure, high-throughput APIs, orchestration, memory, security, and asynchronous workflows. Ensure reliability through monitoring, observability, testing, CI/CD, and fault tolerance. Collaborate with product, research, data, and UX teams, contribute to architecture and code reviews, and develop frontend tooling for agent management.

Build secure, scalable generative AI services, applications, APIs, microservices, and agentic workflows for enterprise customers. Own system architecture from proposal through deployment, develop React and TypeScript interfaces, and partner with DevOps on continuous deployment, monitoring, logging, performance, and security. Collaborate with product, data science, and engineering teams while mentoring peers and delivering resilient production software.

Build and evolve Figma’s AI-powered Dev Mode, MCP tools, Make, and agentic coding products. Lead generative AI efforts from ideation through production, develop user-facing LLM features, create evaluation sets and LLM judges, and collaborate with product, design, data, and research teams. The role also involves cross-functional product development, mentoring, and delivering high-quality, user-focused engineering solutions.

Architect and develop production-grade business systems across Salesforce, NetSuite, and integrated enterprise platforms. Build quoting, subscription, and entitlement engines; create automation pipelines and API integrations; establish architecture, security, documentation, and code-review standards; and translate commercial policies into scalable technical solutions. The role partners with Finance, Sales Operations, Customer Success, and product stakeholders while maintaining system reliability, auditability, observability, and production readiness.

Build scalable Java backend systems using Spring, REST APIs, microservices, databases, messaging, Docker, and cloud platforms. Lead architecture and technical design, promote engineering excellence, mentor engineers, drive delivery, improve automation, and evaluate emerging technologies and AI capabilities. Collaborate with clients and cross-functional teams to deliver secure, resilient software with measurable business value.

Build and own full-stack internal tooling and creator-facing workflows for AI-powered games. Translate the needs of designers, artists, writers, engineers, and external partners into intuitive, scalable applications and narrative systems. Collaborate across disciplines, iterate based on developer feedback, and write performant, maintainable production code with significant end-to-end ownership.

Build and maintain production systems for AI-driven digital actors and interactive worlds. Responsibilities span gameplay systems, AI integrations, runtime infrastructure, developer tooling, and product features. Collaborate with researchers, designers, artists, and product teams to turn experimental AI capabilities into engaging real-time experiences. The role emphasizes clean, performant code, engineering quality, experimentation, and scalable systems for games and interactive media.

Lead strategic technical integrations with external partners, improve partner operations, and develop scalable partner-facing solutions. Collaborate across Product, Engineering, Business Development, Program Management, and Marketing to prototype, test, and launch features. Serve as the technical point of contact for partners, address product gaps, integrate payment and B2B APIs, and support streaming platforms across Android TV, browser-based TV platforms, embedded devices, and OEM ecosystems.

Lead design and delivery of scalable, cloud-native backend systems and integrations. Provide technical leadership, conduct code reviews, champion testing and observability, mentor engineers, collaborate with stakeholders, and drive operational excellence.

Lead technical design and delivery of supply chain and warehouse software at scale. Drive architecture, DevOps, observability, reliability and performance practices; mentor senior engineers; influence product and technology strategy; promote clean code and engineering excellence across teams; support recruitment and outreach.

Lead technical direction and modernise international commerce platforms. Design scalable integrations for product, pricing, fulfilment, partner/marketplace flows. Promote engineering excellence, DevOps ownership, observability, and mentor teams while aligning technology strategy with business goals.

The role involves optimizing hardware support within a software stack for AI model deployment, collaborating with teams and hardware vendors to enhance performance and portability across platforms.

Build and ship native Android features in Kotlin for an AI-enabled neobank. Design clean mobile flows for payments, insurance and financial services, integrate backend APIs, improve performance and reliability, use analytics and on-device ML (TensorFlow Lite) to enhance user journeys, and collaborate with product and design.

Develop GPU capture, replay, profiling, and debugging technology for current and future PlayStation platforms. Build reliable, high-performance C++ systems supporting graphics software, platform engineering, and game developers. Diagnose low-level platform issues, collaborate with hardware and software teams, and deliver features end to end while improving developer tooling and user experience.

Develop scalable Python software and reusable components for a cloud-native investment platform. Build AWS and Azure solutions, including serverless services, data workflows, and analytics capabilities. Collaborate with investment, product, data, and operations teams to translate business needs into secure, maintainable products. Apply Agile, DevSecOps, CI/CD, testing, and code review practices, while coaching junior engineers and contributing to agentic development workflows.

Design, implement, and maintain observability features: large-scale data ingestion/storage/processing, visualization tools, frontend integrations, reliability via testing, and collaborate across product, design, and infrastructure while engaging with open-source communities and user feedback.

Technical lead for a Golang backend: translate architecture into detailed designs, stay hands-on with AI-assisted implementation, build secure microservices and REST/gRPC APIs, drive containerization and secure CI/CD/DevSecOps, enforce security standards (OWASP, ISO 27001, IEC 62443), mentor engineers, own testing and operational reliability, and collaborate cross-functionally to protect OT/ICS environments.

Designs and maintains automated test frameworks for embedded and connected hardware platforms used in operating rooms. Tests device software, firmware integrations, APIs, connectivity, operating systems, OTA updates, and hardware-software interactions. Develops test plans, CI/CD quality gates, documentation, and system validation strategies while collaborating with software, hardware, firmware, and systems engineers. Requires frequent onsite work at the London office, three to four days weekly.

Build software systems, services, and tools supporting investment portfolio management and construction. Develop cloud-first, data-centric applications using modern programming languages and AWS services; apply software engineering best practices, observability, and AI-enabled analytics. Collaborate with engineers, customers, and partner teams, contribute to technical decisions, identify bottlenecks, and solve ambiguous problems while delivering scalable solutions.

Build scalable, low-latency backend APIs, event-driven services, integration layers, and microservices supporting personalization and recommendation experiences. Partner with AI/ML and data engineers to deploy models, expose AI services, and develop React applications. Improve security, observability, reliability, performance, scalability, and operational efficiency while using AI-assisted engineering tools to enhance delivery and code quality.

Lead hands-on full-stack and AI engineering for enterprise data applications. Design, build, test, deploy, and operate APIs, data workflows, user interfaces, and production generative AI solutions using retrieval-augmented generation. Establish evaluation, observability, security, governance, and cost controls for AI services. Provide technical leadership, mentor engineers, influence stakeholders, and develop reusable architectures, services, and engineering practices across global teams.

Lead full-stack software and AI engineering for enterprise data applications. Design, build, test, deploy, and operate APIs, user interfaces, data workflows, and generative AI solutions, including retrieval-augmented generation systems. Establish evaluation, observability, security, and operational practices for production AI. Provide technical leadership, mentor engineers, influence stakeholders, and develop reusable architectures and services across global teams.

Develop and deliver scalable software across front-end and back-end systems. Responsibilities include code reviews, testing strategy, deployment, monitoring, security, agile collaboration, system reliability, and mentoring engineers. The role requires working with APIs, relational and NoSQL databases, modern architecture patterns, and potentially microservices, Docker, Kubernetes, and CI/CD pipelines.

Design, develop, test, deploy, and maintain bespoke full-stack software solutions using Java and modern web technologies. Work within Agile teams across the full software lifecycle, use GitLab for CI pipelines, deploy to AWS, Azure, and private cloud environments, and support client engagements. The role may involve team leadership, client management, training, and participation in a 24/7 on-call rota with occasional customer-site attendance in Croydon.