326 to 350 of 1,015 ECMAScript Jobs in London

organisations. Proven expertise in distributed systems, cloud‐native architectures and modern engineering practices. Demonstrated hands‐on coding capability in at least one of: Python, JavaScript, TypeScript, Go, Java, or similar enterprise language. Strong understanding of frontend frameworks, backend services, APIs, integration patterns and observability. Experience leading architecture reviews and influencing ...

organisations. Proven expertise in distributed systems, cloud-native architectures and modern engineering practices. Demonstrated hands-on coding capability in at least one of: Python, JavaScript, TypeScript, Go, Java, or similar enterprise language. Strong understanding of frontend frameworks, backend services, APIs, integration patterns and observability. Experience leading architecture reviews and influencing ...

based infrastructure.Nice‐to‐Have SkillsDomain knowledge in FX, Fixed Income, Equities, or Equity Derivatives.Additional expertise with kdb+ in complex, production‐scale environments.Exposure to modern JavaScript build toolchains, including Node.js, npm, Rush, Yarn, Webpack, Babel, and Cypress.About State Street & BestXState Street is a global financial services leader, combining scale, resilience ...

deliveryCustom SharePoint application developmentClient-side SharePoint development and integrationsWorking within structured project delivery environmentsTechnical SkillsSharePoint TechnologiesSharePoint Framework (SPFx)SharePoint Client Object Model (CSOM)SharePoint JavaScript Object Model (JSOM)SharePoint REST APIsFront-end integration with SharePointSharePoint customisation and extensibilityDevelopment TechnologiesJavaScriptTypeScriptSvelteHTML5CSS3JSONTooling & Development EnvironmentVisual Studio Code or equivalentNodejs (LTS)npm or pnpmViteESLint ...

deploying AI, ML, GenAI, LLM, RAG, agentic AI, data science, or automation solutions.Hands-on experience with programming languages and frameworks such as Python, JavaScript/TypeScript, FastAPI, Flask, React, LangChain, LlamaIndex, PyTorch, TensorFlow, or similar technologies.Experience integrating APIs, data sources, model providers, workflow tools, and cloud services into working demos ...

background isAbility to read and reason about production code and hold your own with senior engineers, with working knowledge of Java/Kotlin and JavaScript/TypeScript (React).Solid AWS security experience, including securing cloud-native, containerized environments (e.g. EKS).Hands-on experience with security tooling across the SDLC, such ...

architectural documentation (C4 Model, ADRs). Haveexperienceinbuilding developer tools such as CLIs, SDKs, and developer portals, ensuring seamless developer workflows. Possessextensive experience with JavaScript, TypeScript, Node.js, and React; Familiaritywith other languages like Rust, Dart, or Go is a plus. Are hands-on with REST APIs, Test-Driven Development, and committed ...

Databricks product roadmap.What we look for:Extensive experience in data engineering, data platforms & analytics, or software engineeringComfortable writing code in either Python, Scala, JavaScript/TypeScript, and modern frameworksWorking knowledge of two or more common Cloud ecosystems (AWS, Azure, GCP) with expertise in at least oneDeep experience with distributed computing ...

deploying AI, ML, GenAI, LLM, RAG, agentic AI, data science, or automation solutions. Hands-on experience with programming languages and frameworks such as Python, JavaScript/TypeScript, FastAPI, Flask, React, LangChain, LlamaIndex, PyTorch, TensorFlow, or similar technologies. Experience integrating APIs, data sources, model providers, workflow tools, and cloud services into ...

Have SkillsDomain knowledge in FX, Fixed Income, Equities, or Equity Derivatives. Additional expertise with kdb+ in complex, production‐scale environments. Exposure to modern JavaScript build toolchains, including Node.js, npm, Rush, Yarn, Webpack, Babel, and Cypress. About State Street & BestXState Street is a global financial services leader, combining scale, resilience ...

must haves):Multiple years of hands-on Oracle CPQ experience. Implementation Experience in CPQ Commerce and Configuration flowsDeep expertise in SQL, Java/C#, JavaScript, jQuery, XML/XSL, and BML.Experience with Agile/SCRUM is desirable.Ability to support multiple geographically dispersed teams.Strong written and verbal communication skills, with ...

development, RAG pipelines, evaluation frameworks, workflows, and deployment.Technical SkillsSolid programming proficiency (we are open to any experience but primary languages include: TypeScript and the JavaScript ecosystem, Python and Java).Hands-on experience building and deploying AI agents or multi-agent systems.Working familiarity with enterprise IT architecture, cloud platforms (AWS, Azure ...

automated testing and deployment governanceCertified Platform App Builder, Platform Developer 1 & 2, and Administrator 201, with proficiency in Apex, Lightning, SOQL/SOSL, and JavaScript, and working knowledge of one of Java, Go, or PythonExperienced with Salesforce SOAP, REST, and BULK APIs, Web UI frameworks (Lightning components or Visualforce), data ...

available systems What we would like to see from you; Kubernetes (K8S) AI/LLM tooling (Claude, Codex, Agents) Angular or React TypeScript/JavaScript AG Grid WebSocket/WebTransport gRPC/Protobuf Solace messaging Modern Visual Studio/VS Code workflows C++ This is an opportunity to shape ...

systems Strong understanding of interaction design principles, including usability, feedback, and system behaviour Familiarity with modern front-end approaches, including component-based development and JavaScript frameworks Strong knowledge of accessibility standards (WCAG 2.2) and practical application in interface design Ability to collaborate effectively within multidisciplinary teams, particularly with developers ...

systems Strong understanding of interaction design principles, including usability, feedback, and system behaviour Familiarity with modern front-end approaches, including component-based development and JavaScript frameworks Strong knowledge of accessibility standards (WCAG 2.2) and practical application in interface design Ability to collaborate effectively within multidisciplinary teams, particularly with developers ...

working with data in Python, across data engineering and analytics. Background in data science, quantitative finance, or risk analytics. Proficiency in TypeScript/JavaScript (React preferred). Experience with Kubernetes and containerization. Experience with AWS or another public cloud provider. Assessment Criteria You may be assessed on key critical skills ...

optimization, including touchpoints in marketing, sales, and commerce.Strong knowledge of employee lifecycle touchpoints, such as onboarding, daily productivity, and career development.Technical Proficiency: Proficiency in JavaScript, HTML, CSS, and ServiceNow-specific tools like Glide API, Flow Designer, and IntegrationHub.Integration Skills: Expertise in integrating ServiceNow with external systems to create ...

integration methods, associated best practices, and related tools/frameworks (REST/JSON APIs, Postman).Experience with at least one common front-end (pure JavaScript, React, Angular, etc) and back-end (Java, .NET, Python, Node, etc) technology.Previous exposure to RFI/RFPUnderstanding of end-to-end payment flow.Payments industry exposure ...

integration methods, associated best practices, and related tools/frameworks (REST/JSON APIs, Postman).Experience with at least one common front-end (pure JavaScript, React, Angular, etc) and back-end (Java, .NET, Python, Node, etc) technology. Previous exposure to RFI/RFPUnderstanding of end-to-end payment flow. Payments ...

Assess technical trade-offs and guide design decisions across projects. Write, review, and own high-quality code - primarily Python (Flask, FastAPI, or Django) and JavaScript/TypeScript (React preferred). Build and maintain RESTful APIs and modern frontends. Work directly with clients - communicating clearly, understanding the why behind what ...

/heap distinction, compiled/interpreted languages).Proficiency with at least one solution language (e.g. C++, Java, C#) and one utility language (e.g. Python, JavaScript, Perl, PowerShell).Ability to use and configure more than one major operating system.Ability to pick up new languages and technologies easily.Ability to communicate regarding technical ...

company Expertise selling, configuring and delivering software demonstrations Expertise with implementing software products or solutions to enterprise companies Hands on experience with REST APIs, JavaScript, FreeMarker, HTML, CSS. Powershell scripting, ASP.NET, and C# experience a plus. Experience working with Kubernetes (preferred), Docker, and OpenShift Advanced knowledge of web applications, SaaS ...

heap distinction, compiled/interpreted languages). Proficiency with at least one solution language (e.g. C++, Java, C#) and one utility language (e.g. Python, JavaScript, Perl, PowerShell). Ability to use and configure more than one major operating system. Ability to pick up new languages and technologies easily. Ability ...

heap distinction, compiled/interpreted languages). Proficiency with at least one solution language (e.g. C++, Java, C#) and one utility language (e.g. Python, JavaScript, Perl, PowerShell). Ability to use and configure more than one major operating system. Ability to pick up new languages and technologies easily. Ability ...