Top Backend Developer Jobs in London

As a Senior BE & AI Engineer at Aircall, you will be responsible for designing, developing, deploying, and operating business-critical AI features that add customer value on top of Voice. Your responsibilities include participating in requirements analysis, proposing innovative solutions based on AI trends, writing clean scalable code, mentoring team members, and more.

Backend Staff/Lead Engineer role at Yassir, a leading super app in the Maghreb region offering on-demand services and expanding into financial services. Responsible for driving technical standards, leading backend engineers, conducting technical interviews, and contributing to scaling up backend engineers.

Develop user interface solutions for Citadel's investment professionals, visualize financial data, collaborate with top industry professionals, challenge the status quo, and drive platform evolution.

Senior Backend Engineer responsible for designing, developing, deploying, and operating business-critical features using Ruby and Typescript. Mentoring junior team members and contributing to product and platform optimization. Must have 5+ years of experience in back-end development with a focus on security, scalability, and performance, as well as experience with AWS in a production environment.

Join Trustpilot as a Fullstack Software Engineer II in the Acquisition Team. Work on transforming Trustpilot's B2B website, participate in full-stack web development, develop RESTful APIs, and work with component-based front-end development. Enjoy flexible working options, competitive compensation, learning opportunities, and various benefits.

As a Backend Staff Engineer at Yassir, you will drive technical standards, provide leadership, mentor junior developers, and contribute to scaling up Backend engineers. Responsibilities include designing, building, and maintaining features, managing dependencies, conducting design and code reviews, and participating in architecture discussions. The role also involves conducting technical interviews and improving engineering standards and processes. Must have at least 10 years of experience in backend engineering with NodeJS, strong programming fundamentals, excellent communication skills, and experience with Git and testable code.

Design, develop, and deploy scalable backend services and APIs for global enterprises using .NET, C#, and MongoDB. Collaborate with cross-functional teams to ensure seamless integration and troubleshoot production issues efficiently. Strong problem-solving skills and experience with writing clean, maintainable code.

Join Upwork as a Staff Backend Engineer to collaborate with engineering teams and product managers, design and optimize software systems, lead technical strategies, mentor engineers, and enhance system performance and scalability. This is a contract position with potential for renewal based on project needs and accomplishments towards deliverables.

Analyzes, develops, designs, and maintains software for the organization’s products and systems. Performs system integration of software and hardware to maintain throughput and program consistency. Develops, validates, and tests structures and user documentation.

The Technical Lead, Backend role at HubSpot involves designing and solving problems in large, distributed systems. This role focuses on hands-on coding and developing software in Java, collaborating with product management and frontend developers, leading a small team of engineers, and setting the direction for backend development at HubSpot.

Plum is seeking a Senior Backend Engineer to design scalable systems using Python and related technologies. The role involves identifying system issues, contributing to product development, and working in a collaborative environment. The ideal candidate should have at least 6 years of experience and be proficient in software engineering best practices.

Seeking a Senior Backend Engineer to lead the development and optimization of streaming technologies at SoundCloud, focusing on audio/video codecs, streaming protocols, and container technologies. Must have 10+ years of experience in software development, proficiency in Go, expertise in cloud platforms, and strong problem-solving skills.

Principal Backend Engineer role at Grafana focusing on driving architectural changes for the platform, working with a distributed systems background, contributing to the open-source culture, designing and maintaining critical systems, mentoring team members, and continuous skill development.

Seeking an experienced Backend Software Engineer to join a high-performing team at Encord. You will have end-to-end ownership of projects, autonomy to make decisions, and collaborate with a lean and high-trust team. Responsible for developing and maintaining systems, driving impact for customers, and tackling complex domains with simple solutions.

Cloudflare is seeking a Senior Software Engineer to help build and enhance Cloudflare's serverless database, D1. The role involves defining and building the future of D1 to enable developers to build full stack applications. The ideal candidate should have at least 5 years of experience building full-stack web applications, knowledge of Javascript and Typescript, proficiency in one or more modern programming languages, and experience operating high-volume SaaS applications.

Perplexity is seeking a Sr. Backend Software Engineer to lead the design, implementation, and scaling of backend systems using Python, Postgresql, DynamoDB, Redis, and Kubernetes. Responsibilities include database optimization, building interfaces, and scaling web server backends. Requires 4+ years of engineering experience.

Algolia is looking for a Senior Backend Software Engineer to join the Dashboard Platform team. You will work on core features of the Algolia Dashboard, build new services, and focus on infrastructure automation. The role involves contributing to operation and deployment of all Dashboard features, delivering world-class developer experiences, and sharing knowledge on software engineering best practices.