Top Software Engineer Jobs in London

Design, build and maintain backend microservices using Java 17+, Spring Boot and related stack. Integrate third-party platforms, ensure performance and scalability, own technical decisions end-to-end, balance feature work with technical debt, and mentor junior engineers.

As a Software Development Engineer III, you will design, implement, and manage critical services in pricing technology, partnering with business to align tech with outcomes, mentor team members, and advocate for operational excellence.

The Senior Back-End Software Engineer designs, develops, and maintains scalable backend systems while taking ownership of the software development lifecycle.

As a Software Engineer, you will build features, write maintainable Roblox Lua code, collaborate with teams, and enhance gameplay for millions of players.

The Senior Full-Stack Engineer will design and build scalable UI systems, collaboratively own features, and support production quality. Responsibilities include API design, debugging, and performance tuning.

As a Software Engineer, you will design, develop, and maintain software solutions, collaborating with teams in an agile environment while ensuring quality and security in your code.

The Senior Software Engineer will develop multi-threaded software in C++ for surveillance cameras, optimize system performance, and collaborate with hardware engineers.

The Senior AI Engineer will develop AI capabilities, maintain server infrastructure, implement evaluation frameworks, promote AI practices, and collaborate with teams to enhance AI adoption.

The Senior Android Engineer will lead feature development in the Android app, collaborate with teams, ensure technical excellence, mentor other engineers, and focus on user experience and performance.

The Senior Software Engineer II will architect and build new features for the training platform, collaborate with product teams and support fellow engineers, while improving the development processes and tools.

Lead the technical direction and delivery of innovative AI projects, design ML systems, engage with customers, and mentor team members.

The Lead Software Engineer will enhance the WMX platform, collaborate across teams to develop technical solutions, coach junior engineers, deliver projects, and ensure effective coding practices.

The Senior Software Engineer will build indexing systems and data pipelines for an agent-native search platform, focusing on data ingestion, processing, and organization for AI consumption.

The Senior Software Engineer will develop low-latency, high-throughput systems for a novel search engine. Responsibilities include optimizing request flows, ensuring reliability, and collaborating with indexing and ML teams.

The Senior Staff Software Engineer will design, develop, and maintain backend systems for Databricks, ensuring high performance and reliability while mentoring junior engineers and leading projects.

The Staff Software Engineer will design and develop foundational platform infrastructure systems, focusing on reliability and scalability across multiple clouds, and influence strategic engineering decisions.

Design, develop, test and deploy secure, high-quality software. Maintain reusable code, implement automated tests, manage CI/CD and Azure infrastructure (under supervision), mentor engineers, perform peer reviews, provide production technical support including out-of-hours rota, and embed security across the SDLC.

Lead design and delivery of scalable, secure web services across the full SDLC. Mentor engineers, champion best practices, build CI/CD and IaC, support live services, investigate incidents, and ensure accessibility, performance, and data protection.

Lead design, build, release, and maintain large-scale software solutions. Provide technical leadership, architecture, code review, mentorship, and operational stability. Drive CI/CD, DevOps practices, observability, and technical roadmap while collaborating with product and delivery teams.

Senior engineer who designs and develops APIs and services, mentors engineers, works in Agile teams, participates in on-call rota, and helps drive a cloud migration to GCP. Collaborative, experimentation-focused role using C#, Node and React.

Design, build and operate large-scale data ingestion, processing and distribution infrastructure. Lead architecture and technical design for real-time messaging, distributed storage, data processing and analytics workloads. Mentor engineers, enforce high engineering standards, and translate business requirements into scalable production systems.

Responsibilities include building and maintaining backend services for distributed applications, requiring functional programming with Scala and TypeScript, alongside client interactions.

As a Software Engineer at Canonical, you will design, build, and ship software, improve packaging and distribution processes, and mentor colleagues while contributing to open source projects.

The Junior Ubuntu Software Engineer will design, build, and ship software, focusing on quality and resilience, while engaging with the open source community.

Own and evolve an Angular 21 frontend and supporting Node.js (NestJS) backend for MFA and authentication flows. Design REST APIs, integrate identity platforms, deploy and operate services on AWS using IaC, write automated tests, participate in CI/CD, and collaborate with product and security stakeholders to deliver secure, reliable authentication experiences.