Top Software Engineer Jobs in London

8 Days AgoSaved
Remote
London, UK
Senior level
Senior level
Software
Design, build, and maintain scalable backend systems and APIs using Go/Python. Integrate enterprise services, data pipelines, event-driven tech (Temporal, Kafka), and LLMs (OpenAI, Gemini, Claude). Ensure security, high availability, multi-tenant SaaS deployments, and improve engineering practices across the stack.
Top Skills: Agentic ArchitectureAngularClaudeCSSDockerElasticFastapiGCPGeminiGoGraphQLGrpcHTMLJavaScriptKafkaKubernetesLlmsNoSQLOpenaiPostgresPythonRagReactRedisRestTemporal
17 Days AgoSaved
Hybrid
London, UK
Junior
Junior
Information Technology • Software • Cybersecurity • App development
Join an agile team to design and develop secure, scalable software services using modern technologies. Collaborate with customers and improve skills through learning and feedback.
Top Skills: AngularAWSCi/CdDockerElasticsearchGitopsGoInfrastructure As CodeJavaKubernetesMongoDBPythonReactRelational DbsTypescript
Reposted 17 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Software
The Golang Engineer will architect and develop the trading platform, ensuring performance and stability while integrating with bookmakers and optimizing trading processes.
Top Skills: AWSCi/CdDatabasesGoLinuxMessage Buses
Reposted 17 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Fintech • Software
Join a specialist Actuarial Software Development team as a full-stack developer, creating high-quality software solutions and product enhancements while managing IT controls and server management.
Top Skills: Asp.NetC#HTMLJSONSQL ServerVb.NetWebservicesXMLXslt
Reposted 17 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Financial Services
The role involves designing and implementing the Trading Data platform, focusing on the capture of order data and ensuring high availability and performance. Responsibilities include collaborating with teams to create scalable solutions, supporting the system, and owning project design and development.
Top Skills: Column-Store DatabasesGoKafkaReactS3-Like Files
Reposted 17 Days AgoSaved
Hybrid
London, UK
Mid level
Mid level
Cloud • Real Estate • Software
As an Intermediate Software Engineer II, you'll collaborate with teams to develop web applications using TypeScript and React, mentor junior developers, and improve code quality through reviews and testing.
Top Skills: CypressJestReactReact Testing LibraryTypescript
Reposted 17 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Biotech
You will contribute to the inference platform, maintain APIs, support users, improve CI/CD, and ensure platform reliability.
Top Skills: GCPKubernetesPython
Reposted 17 Days AgoSaved
In-Office or Remote
London, UK
Mid level
Mid level
Artificial Intelligence • Big Data
Seeking a Full Stack Software Engineer with expertise in cloud platforms, full-stack development, and Agile methodologies to build data-driven solutions.
Top Skills: AnsibleAWSCC++GCPGit HubJavaJavaScriptJenkinsKubernetesMavenMicroservicesOraclePythonRestful Web ServicesScalaTomcat
Reposted 17 Days AgoSaved
In-Office
London, UK
Senior level
Senior level
Artificial Intelligence • Natural Language Processing • Generative AI
Responsible for managing the lifecycle of accelerator capacity, developing AI infrastructure, and driving cross-team initiatives while ensuring operational excellence and mentoring engineers.
Top Skills: AWSAzureGCPGoKubernetesNode.jsPythonRustTerraform
Reposted 17 Days AgoSaved
In-Office
London, UK
Senior level
Senior level
Fintech • Financial Services
Design, develop, and maintain low-latency electronic execution systems, collaborate with cross-functional teams, and enhance platform reliability and performance at scale.
Top Skills: Agile MethodologiesC++Ci/CdJavaRust
Reposted 17 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Fintech • Information Technology • Payments
Join Visa as a Software Engineer in Test, focusing on API testing, CI/CD integration, cloud solutions, and implementing QA best practices within an Agile team.
Top Skills: Api TestingAWSCi/CdCloud-Native ArchitecturesDockerGitlab CiJavaJenkinsKafkaKubernetesWiremock
Reposted 17 Days AgoSaved
In-Office
London, UK
Senior level
Senior level
Fintech • Information Technology • Payments
Seeking a Software Engineer for Regulatory Reporting to build backend systems ensuring compliance. Responsibilities include system design, data integration, and audit support.
Top Skills: AWSBigQueryJavaPythonRedshiftSnowflakeTerraform
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Reposted 17 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Fintech • Information Technology • Payments
The Software Engineer will develop and maintain backend services using Java and Spring Boot, collaborating in Agile teams to deliver scalable solutions. They will ensure system reliability and implement observability features, while supporting event-driven architectures and participating in CI/CD processes.
Top Skills: AWSDockerElasticsearchJavaKafkaKubernetesSpring BootSQL
Reposted 18 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Fintech • Information Technology • Software • Financial Services
Join the Core Technology team as a Software Developer to enhance systems for Asset Management and Securities, collaborating with various teams to deliver innovative tech solutions.
Top Skills: C#GuiceHibernateJavaMavenNumpyPandasPostgresPython
Reposted 8 Days AgoSaved
Remote
London, UK
Mid level
Mid level
Edtech
Join a collaborative development team to design, implement, and maintain SaaS solutions, writing clean code and participating in Agile methodologies.
Top Skills: Asp.NetAzure DevopsAzure HostingC#Entity FrameworkJavaScriptJquerySQLWebapi2
Reposted 8 Days AgoSaved
Remote
London, UK
Mid level
Mid level
Biotech
A mid-level C# .Net Back End Software Engineer responsible for the software development lifecycle, collaborating with teams, and maintaining software applications with a focus on Azure cloud services.
Top Skills: .Net CoreAzure BicepAzure Cosmos DbAzure Data FactoryAzure DevopsAzure FunctionsAzure StorageC# .NetCypress.IoJavaScriptKey VaultNextjsPactflowPythonReactSeleniumService BusSnowflakeYaml
Reposted 8 Days AgoSaved
Remote
London, UK
Junior
Junior
Artificial Intelligence • Machine Learning • Big Data Analytics
The Software Engineer will build AI solutions for the Defence team, applying machine learning and high engineering standards while collaborating with technical teams.
Top Skills: C#C++DockerGitlabGoJavaKubernetesPythonRust
18 Days AgoSaved
Hybrid
London, UK
Mid level
Mid level
Fintech
In this role, you'll develop reliable Python systems for trading operations, collaborate on projects, debug issues, and provide operational support.
Top Skills: Apache AirflowApache KafkaDjangoFastapiFlaskJavaLinuxPostgresPythonSnowflakeSQL
14 Days AgoSaved
Remote or Hybrid
London, UK
Senior level
Senior level
Digital Media • Gaming • Information Technology • Software • Sports • Esports • Big Data Analytics
Build scalable, data-driven internal tools and services in Python; lead technical strategy to measure AI impact across tooling, data pipelines, and dashboards; own end-to-end features from requirements to observability; partner with engineering, data, and delivery teams; set squad technical direction and mentor junior engineers.
Top Skills: APIsDashboards/VisualizationData PipelinesData StoresPython
Senior level
Information Technology • Consulting
Design and build scalable applications using JavaScript or Python, implement data storage solutions, optimise performance, ensure testing and CI/CD practices, collaborate with clients and technical leaders, and maintain high code quality through reviews and agile delivery.
Top Skills: AgileCi/CdCloudDatabasesEnd-To-End TestingGitIntegration TestingJavaScriptPythonUnit Testing
9 Days AgoSaved
In-Office or Remote
London, UK
Mid level
Mid level
Information Technology • Legal Tech • Professional Services • Analytics • Business Intelligence
Design, develop, and maintain components of the LNIP intelligence core platform, including a semantic search API and internal data curation tool. Implement secure coding standards, unit testing, code reviews, and cloud deployments. Use agentic development tools responsibly and work with complex data models, vector embeddings, SQL and PySpark to support intelligent software systems.
Top Skills: .NetAngularC#Claude CodeCloud DeploymentCoderCursorGithub CopilotJavaScriptOpenai CodexPysparkPythonReactSQLTypescriptVector Embeddings
Reposted 18 Days AgoSaved
Remote or Hybrid
London, UK
Mid level
Mid level
Artificial Intelligence • Software
The role involves building and scaling data infrastructure for multimodal AI systems, developing high-throughput data pipelines, and collaborating with ML researchers and product teams to enhance data systems.
Top Skills: BeamPythonRaySpark
Reposted 18 Days AgoSaved
In-Office
London, UK
Senior level
Senior level
Aerospace • Hardware • Robotics • Defense
The role involves designing and implementing robotic software architectures, developing solutions for robotics applications, optimizing performance, and mentoring team members, with a focus on system integration and communication protocols.
Top Skills: C++Ci/CdDockerLinuxRos2
Reposted 18 Days AgoSaved
In-Office
London, UK
Mid level
Mid level
Artificial Intelligence • Machine Learning • Generative AI
Build and ship polished, high-performance UI for the Codex desktop app and IDE extension. Partner with design to prototype and productionize interfaces for human↔agent workflows, own frontend architecture, improve reliability via testing and instrumentation, and integrate platform/model/backend capabilities.
Top Skills: ElectronReactTypescript
Reposted 18 Days AgoSaved
Hybrid
London, UK
Mid level
Mid level
Artificial Intelligence • Machine Learning • Generative AI
Build end-to-end features for a TypeScript/Node/Electron desktop app and IDE extension. Design integrations with Rust services and the Codex CLI, own IPC architecture, implement orchestration for long-running tasks, and improve observability, reliability, and performance while partnering with product and design.
Top Skills: CliElectronIde ExtensionIpcNode.jsRustTypescript
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