Top Backend Developer Jobs in London

Reposted 5 Days AgoSaved
In-Office
London, UK
Senior level
Senior level
eCommerce • Social Media
The Staff Backend Engineer will lead the technical vision for Depop's data platform, focusing on data ingestion, scalability, observability, and architecting data solutions while mentoring team members.
Top Skills: Apache BeamApache FlinkApache KafkaSparkAWSAzureDatabricksDbtGCPJavaPythonScala
Reposted 5 Days AgoSaved
In-Office
London, UK
Senior level
Senior level
Blockchain • Financial Services • Cryptocurrency • Web3 • Quantitative Trading
Design and develop components of Ripple's identity platform, focusing on authentication and authorisation, while using AI tools. Lead projects and collaborate with teams.
Top Skills: GoJavaKubernetesOauth 2.0OidcSAML
Reposted 5 Days AgoSaved
In-Office
London, UK
Internship
Internship
Gaming • Software • Metaverse
The intern will participate in backend architecture design, develop backend components for overseas games, and ensure service availability.
Top Skills: C/C++Cloud-Native TechnologiesGoPHPPython
6 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Music • Software
Build, scale, and maintain backend APIs and services for a global media streaming platform. Collaborate with client teams, ensure performance and reliability, debug complex distributed systems, participate in architecture and code reviews, and join on-call rotations to maintain service availability.
Top Skills: AWSContainer TechnologiesGCPGoMicroservicesNoSQLSQLTerraform
6 Days AgoSaved
Hybrid
London, UK
Mid level
Mid level
Fintech • Software • Financial Services
Design, develop, and maintain scalable, secure Java backend systems and microservices. Build REST APIs and evolve systems for card payments, treasury, transactions, and crypto liquidity. Work with Postgres and Spring Boot, apply TDD/DDD, and participate in CI/CD to deliver maintainable, high-performance services.
Top Skills: Ci/CdDddJava 25MicroservicesPostgresRest ApisSpring BootTdd
Reposted 6 Days AgoSaved
Hybrid
London, UK
Senior level
Senior level
Fintech • Payments • Financial Services
As a Senior Software Engineer (Backend) at Apron, you'll design systems, develop core financial integrations, and collaborate with cross-functional teams to innovate and improve the product experience.
Top Skills: Google Cloud PlatformKotlinKubernetesPostgresRelational DatabasesTerraform
Reposted 6 Days AgoSaved
In-Office
London, UK
Senior level
Senior level
Fintech • Information Technology • Financial Services
Lead assessment and redesign of backend architecture to improve reliability, scalability, multi-tenancy, and security. Design core abstractions and pipelines with platform/infrastructure teams, set technical direction for scaling to thousands of customers and tens of millions of documents, raise engineering standards, and ship production-grade systems while remaining hands-on.
Top Skills: AICloud InfrastructureLarge Language ModelsMachine LearningPython
Reposted 6 Days AgoSaved
In-Office or Remote
London, UK
Senior level
Senior level
Artificial Intelligence • Software • Automation
The role involves developing and supporting data processing pipelines, collaborating with ML Engineers, and improving infrastructure while mentoring team members.
Top Skills: DockerGkeGrafanaKubernetesLokiMessage QueuesNatsPrometheusPythonRabbitTempo
Reposted 6 Days AgoSaved
Hybrid
London, UK
Senior level
Senior level
Software
As a Senior Product Engineer, you'll build AI-powered workflows, enhance billing infrastructure, and ensure the reliability of production backend systems while collaborating with a small cross-functional team in a fast-paced environment.
Top Skills: BigQueryExposedGitGCPGoogle Cloud MonitoringGoogle Cloud Pub/SubHttp4KKotlinLinearNotionPostgresReactResult4KSentrySlackSpring BootTerraformTypescript
Reposted 6 Days AgoSaved
In-Office or Remote
London, UK
Senior level
Senior level
Cloud • Software • Analytics
The Senior Back-End Software Engineer will implement features, improve logic, write integrations with APIs, and contribute to design discussions within a startup environment.
Top Skills: AWSDjangoDockerK8SPostgres
7 Days AgoSaved
In-Office
London, UK
Entry level
Entry level
Fintech • Information Technology • Payments • Software • Financial Services
Work on data validation and regulatory submission software: translate regulatory requirements into SQL and Python code, build automation tools, apply TDD, participate in code reviews and design discussions, and collaborate with regulatory experts and senior engineers.
Top Skills: GitPythonSQLTdd
7 Days AgoSaved
Hybrid
London, UK
Mid level
Mid level
Software
Build and ship backend-leaning fullstack features (APIs, services, integrations, React frontend). Scope solutions, implement, and own features end-to-end. Collaborate with product and design, contribute to architecture and technical discovery, ensure scalability, reliability, and security best practices, and improve developer experience and tooling.
Top Skills: APIsAWSOwaspPythonReactTemporalTypescript
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Reposted 25 Days AgoSaved
Easy Apply
Remote
London, UK
Easy Apply
Senior level
Senior level
Big Data • Fintech • Mobile • Payments • Financial Services
The Senior Software Engineer will lead the development of backend systems for payment processing, collaborating with teams, setting goals, and fostering quality and ownership in code development.
Top Skills: AWSKotlinKubernetesMySQLPython
Reposted 7 Days AgoSaved
In-Office or Remote
London, UK
Senior level
Senior level
Blockchain • Software • Analytics • Financial Services • Cryptocurrency
Develop and maintain backend components of Tether's platform, focusing on new products, scalability, and security. Collaborate with various teams to implement solutions and improve existing services.
Top Skills: JavaScriptMongoDBMySQLNode.jsRedisRuby On Rails
Reposted 7 Days AgoSaved
In-Office or Remote
London, UK
Senior level
Senior level
Blockchain • Software • Analytics • Financial Services • Cryptocurrency
As a Senior Backend Developer, you'll develop and maintain backend services, ensuring security, scalability, and implementation of new products while collaborating with teams to enhance user experience.
Top Skills: MongoDBMySQLNode.jsRuby on RailsRedisRuby
Reposted 7 Days AgoSaved
In-Office or Remote
London, UK
Mid level
Mid level
Blockchain • Software • Analytics • Financial Services • Cryptocurrency
The Backend Engineer will build secure, scalable backend solutions for Tether, ensuring high performance and security while utilizing Node.js and microservices architecture.
Top Skills: JavaScriptMongoDBMySQLNode.js
Reposted 7 Days AgoSaved
In-Office or Remote
London, UK
Mid level
Mid level
Blockchain • Software • Analytics • Financial Services • Cryptocurrency
As a Backend Engineer at Tether, you'll build scalable backend solutions, ensuring security and responsiveness while working with Node.js and microservices architecture.
Top Skills: JavaScriptMongoDBMySQLNode.js
Reposted 7 Days AgoSaved
Hybrid
London, UK
Mid level
Mid level
Blockchain • Fintech • Information Technology • Software • Financial Services
Develop high-quality backend software solutions, solving complex problems and collaborating with product teams on a scalable investment platform. Respond to technical issues in an on-call environment.
Top Skills: Google Cloud PlatformNode.jsPostgresTypescript
Reposted 7 Days AgoSaved
Hybrid
London, UK
Mid level
Mid level
Blockchain • Fintech • Information Technology • Software • Financial Services
As a Backend Product Engineer, you will develop high-quality software solutions, collaborate with your team on technical decisions, and support product development. You'll manage scalability and maintainability of code for investor platforms, while responding to priority issues and driving innovation at Freetrade.
Top Skills: Google Cloud PlatformNode.jsPostgresTypescript
Reposted 7 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Software
As a Backend/Fullstack Engineer at Hook, you'll design and build product features, manage architecture, review code, and improve processes, focusing on both frontend and backend development using Python and React.
Top Skills: Cloud TechnologiesDjangoFastapiFlaskPythonReact
Reposted 7 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Information Technology • Software
The Software Developer will enhance liquidity access, develop data feeds, and ensure software stability while collaborating across teams. Responsibilities include coding, testing, and production support.
Top Skills: GoGrafanaJavaScriptKafkaLinuxOpentelemetryPostgresPrometheusPythonRabbitMQRedisTypescriptZabbix
Reposted 7 Days AgoSaved
In-Office
London, UK
Senior level
Senior level
Artificial Intelligence • Information Technology • Machine Learning • Natural Language Processing • Software
The Senior Backend Software Engineer will design, build, and maintain scalable backend systems. Responsibilities include collaboration with teams, API implementation, and ensuring best practices in software engineering.
Top Skills: AWSAzureDjangoDockerElasticsearchFlaskGCPGitNoSQLOpensearchPythonReactRestful ApiSQLTerraform
Reposted 7 Days AgoSaved
In-Office
London, UK
Senior level
Senior level
Artificial Intelligence • Blockchain • Information Technology • Consulting
Lead ownership of core backend systems for ultra-low-latency, high-throughput distributed services. Drive architecture, resolve performance and scaling bottlenecks, mentor engineers, and operate critical infrastructure under extreme concurrency and load.
Top Skills: DatabasesDistributed SystemsGoRustTypescript
Reposted 7 Days AgoSaved
In-Office or Remote
London, UK
Junior
Junior
Renewable Energy
You will build backend infrastructure for a digital energy platform, working on real-time systems and customer energy pipelines while adapting to business needs
Top Skills: AWSInfrastructure As Code
Reposted 7 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Professional Services • Financial Services
As a Mid Backend Engineer, you will develop scalable technology using Golang, crafting APIs and collaborating with product teams to enhance services.
Top Skills: AWSGoGraphQLNoSQLRestSQLTerraform
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