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Top Backend Developer Jobs in London

103+ Job Results
8 Hours Ago
London, UK
287 Employees
Senior level
287 Employees
Senior level
Beauty • Software
Design, build, and maintain efficient, reusable, and reliable Ruby/Elixir code in a fast-paced environment. Work on switching from monolith to microservice architecture, focusing on domain-driven design. Collaborate with the team on different layers of the infrastructure at Fresha.
8 Hours Ago
London, UK
287 Employees
Senior level
287 Employees
Senior level
Beauty • Software
Senior Staff Backend Engineer role at Fresha, leading marketplace platform for beauty & wellness. Responsible for technical vision, strategy, and execution, ensuring system reliability and scalability. Hands-on coding skills, ownership of architecture, technical guidance, and cross-team initiatives.
9 Hours Ago
London, UK
Remote
145 Employees
Mid level
145 Employees
Mid level
Blockchain • Consulting
As a QA Engineer - backend at MultiversX, you'll be responsible for testing backend solutions, collaborating with development teams, and ensuring quality in product development. You will work with technologies such as JavaScript, Python, and various testing frameworks to report bugs and assist in the release process.
9 Hours Ago
London, UK
Remote
145 Employees
Junior
145 Employees
Junior
Blockchain • Consulting
As a Backend Developer at MultiversX, you will create and enhance microservices for blockchain applications, develop REST API and GraphQL endpoints, and ensure performance optimization for scalability. You will contribute to the technological stack and debugging efforts while collaborating in an agile team environment.
9 Hours Ago
London, UK
6,766 Employees
Senior level
6,766 Employees
Senior level
Software
HubSpot is looking for a Senior Software Engineer to work on building out Data Sync, the foundation of HubSpot’s Operations Hub product. Responsibilities include development and deployment of integrations, working with third-party APIs, and improving the Ruby integration framework.
10 Hours Ago
London, UK
Remote
73 Employees
Senior level
73 Employees
Senior level
Machine Learning • Software
As a Staff Backend Software Engineer, you will contribute to architectural design and performance optimization while leading large engineering projects. Responsibilities include day-to-day development, code review, and proposing enhancements to improve product value.
16 Hours Ago
London, UK
440 Employees
Senior level
440 Employees
Senior level
Fintech • Payments
As a Senior Backend Software Engineer, you will develop robust solutions using .Net technology, manage the software development lifecycle, collaborate with cross-functional teams, and ensure software quality through effective testing practices.
23 Hours Ago
London, UK
Remote
1,300 Employees
Senior level
1,300 Employees
Senior level
Software
As a Principal Backend Engineer at Grafana, you'll drive the evolution of Grafana into a multi-tenant app platform. Your responsibilities include influencing the roadmap, delivering new features, maintaining system performance, mentoring team members, and contributing to open-source projects, all while fostering a customer-centric approach.
Yesterday
London, UK
989 Employees
Senior level
989 Employees
Senior level
AdTech • Marketing Tech
The Technology Lead will manage and mentor a team of Java developers, ensuring high-quality project delivery. Responsibilities include team development, client engagement, implementing coding standards, and fostering a culture of inclusion and empowerment. The role also involves identifying risks and process improvements in projects to enhance team efficiency.
Yesterday
London, UK
989 Employees
Senior level
989 Employees
Senior level
AdTech • Marketing Tech
The Technology Lead will oversee Java development teams, mentoring developers and ensuring high-quality deliverables while fostering a culture of empowerment and inclusivity. Responsibilities include setting coding standards, managing client relationships, mitigating project risks, and implementing team growth strategies.
2 Days Ago
London, UK
Remote
300 Employees
Senior level
300 Employees
Senior level
Software
As a Senior Backend Engineer, you'll contribute to microservices in GoLang, improve code scalability and reliability, react to monitoring alerts, propose architectural solutions in a high-traffic environment, and lead root-cause analyses while training peers and participating in an on-call rota.
2 Days Ago
London, UK
Remote
18 Employees
Mid level
18 Employees
Mid level
Information Technology • Consulting
Develop and maintain systems related to an Exchange, including operating a trade engine and capturing multi-chain data. Requires strong programming skills and experience with trading systems.
2 Days Ago
London, UK
Remote
6,766 Employees
Senior level
6,766 Employees
Senior level
Software
As a Senior Backend Engineer at HubSpot, you will write production code, design new features, and collaborate with cross-functional teams to enhance products that empower small and medium-sized businesses. Your role will involve addressing user needs and contributing to the overall growth of the company while fostering a cooperative environment.
3 Days Ago
London, UK
Remote
275 Employees
Entry level
275 Employees
Entry level
Big Data Analytics
As a Back End Developer at Sensor Tower, you will participate in the full development life cycle, including design and implementation. Your focus will be on high-performance data aggregation and analysis pipelines, collaborating with a distributed team, and ensuring product quality.
3 Days Ago
London, UK
Remote
275 Employees
Mid level
275 Employees
Mid level
Big Data Analytics
As a Back End Developer at Sensor Tower, you will be involved in the complete development lifecycle, focusing on building and optimizing high-performance data aggregation and analysis pipelines. You will work collaboratively with your team in a remote environment, ensuring customers can efficiently access large volumes of data.
3 Days Ago
London, UK
Remote
55 Employees
Mid level
55 Employees
Mid level
HR Tech
The Senior Back-End Developer will help build integrations for the Jibble 2.0 API using .NET Core while improving existing features and ensuring code quality. The role involves collaboration with product managers, designers, and front-end teams.
4 Days Ago
London, UK
Remote
Entry level
Entry level
Software
The Senior Backend Software Engineer will build the core of Amplemarket's sales platform, tackling various engineering challenges. Responsibilities include developing backend solutions and working with large datasets, while collaborating with a team that values engineering as fundamental to the company's success.
5 Days Ago
London, UK
Remote
578,950 Employees
Senior level
578,950 Employees
Senior level
Big Data • Cloud • Logistics • Machine Learning • Retail
As a Senior Software Engineer, you will lead and participate in projects, create and optimize software solutions using Java and microservices, implement event-driven architectures, and manage cross-functional collaboration, ensuring high-quality code delivery and efficient application development.
5 Days Ago
London, UK
Remote
6,766 Employees
Senior level
6,766 Employees
Senior level
Software
As a Staff Software Engineer in the Attract & Engage product group at HubSpot, you will write production code, build features, collaborate with cross-functional teams, and contribute to company growth. You’ll also analyze user behavior through experiments and support product management and design to meet customer needs.
5 Days Ago
London, UK
6,766 Employees
Senior level
6,766 Employees
Senior level
Software
As a Staff Software Engineer on the Attract & Engage team, you will write and ship production code, collaborate with cross-functional teams to develop product features, and implement experiments to gain user insights while mentoring others and driving technical direction.
5 Days Ago
London, UK
150 Employees
Senior level
150 Employees
Senior level
Fintech • Software • Sports
As a Senior Backend Engineer, you'll lead the design, development, and optimization of backend services, focusing on scalable distributed systems. Collaborating with teams, you'll enforce best practices in code quality and CI/CD, mentor peers, and influence key technical decisions. Your role helps ensure the performance and reliability of platform services.
5 Days Ago
London, UK
Remote
700 Employees
Senior level
700 Employees
Senior level
Cloud • Mobile • Sales • Software
In this role, you will design, develop, and operate AI features that add customer value. You'll participate in requirements analysis, propose innovative AI solutions, write clean scalable code, and mentor team members while improving performance and security of voice solutions at Aircall.
13 Days Ago
London, UK
744 Employees
Senior level
744 Employees
Senior level
Enterprise Web • Marketing Tech • Software
In this role, you will work on building scalable applications, integrating AI technologies, and collaborating with cross-functional teams to create innovative workflows and optimizations. You will maintain backend and frontend features while solving problems swiftly and staying current with industry trends.
7 Days Ago
London, UK
Remote
131 Employees
Senior level
131 Employees
Senior level
Internet of Things • Mobile • Other • Software
As a Senior Backend Engineer, you will architect solutions, deploy new features, scale systems for millions of users, and build tools to maintain a high-quality product and continuous uptime. You should have extensive experience in building enterprise-ready platforms and strong knowledge of multiple technologies and frameworks, especially in a high-traffic application environment.
8 Days Ago
London, UK
Remote
1,300 Employees
Mid level
1,300 Employees
Mid level
Software
The Staff Backend Engineer will enhance Grafana's core architecture for scalability and multi-tenancy while optimizing features based on production insights. Responsibilities include coding, reviewing design documents, mentoring team members, and aligning with stakeholders, as well as participating in on-call rotations to ensure customer experience.
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