1 to 25 of 279 ECMAScript Jobs in London

capability and commercial goals. Drive innovation: pilot emerging technologies (AI, automation, data services) that improve efficiency and insight. Your Technical Toolkit Frontend HTML5, CSS3, JavaScript (ES6+), TypeScript React.js (preferred), Angular, or Vue.js Responsive design (Bootstrap, Tailwind), state management (Redux, Context API) Front-end testing (Jest, React Testing Library, Cypress) Backend ...

Agile and DevOps practices, with a focus on continuous integration and delivery. Some proficiency in one or more programming languages (e.g., Python, Java, JavaScript) and experience with software architecture patterns. Experience with cloud platforms (e.g., AWS, Azure, GCP) and infrastructure as code. Familiarity with CI/CD pipelines, automated testing ...

testing [cucumber, nightwatch]) Nice to have skills: AWS Knowledge of Open Source BPMN workflow engines (Camunda, Activiti or Flowable) Experience on a front-end javascript framework such as react, angular or vue.js RedHat OpenShift for container orchestration Knowledge of NCSCs 14 cloud security principles. SC Clearance: my client works with ...

with a focus on large-scale, complex systems. Polyglot engineer comfortable working across multiple languages and frameworks (weve used Python, Java, Kotlin, Node.js, C#, JavaScript, Express, React and Next.js to name a few). Passion for learning new technologies and helping others do the same. Proven track record of leading ...

polyglot is preferred. Strong understanding of software development methodologies such as Agile, TDD and DevOps. Some proficiency in multiple programming languages such as Python, JavaScript, or similar. Extensive experience writing well-tested code. Good knowledge of cloud platforms (e.g., AWS, Azure, GCP) and infrastructure as code Experience with CI/ ...

delivering digital products (web apps and services) to market using agile methodologies. Strong proficiency in C#, .NET, React and Azure. Other development skillsets: JavaScript, HTML/CSS, Azure PaaS (Azure Functions, Azure Logic Apps, Cosmos DB, Azure App Service, Azure Service Bus), ARM/Bicep templates, SharePoint. Demonstrable creative flair ...

consulting environment, working closely with architects, designers, product teams and client stakeholders. Key Responsibilities Design and build applications using ASP.NET Core, C# and modern JavaScript frameworks Develop responsive, accessible front-end interfaces using React, Angular or Blazor/Razor Contribute to cloud-native architectures on AWS or Azure Implement modern ...

consulting environment, working closely with architects, designers, product teams and client stakeholders. Key Responsibilities Design and build applications using ASP.NET Core, C# and modern JavaScript frameworks Develop responsive, accessible front-end interfaces using React, Angular or Blazor/Razor Contribute to cloud-native architectures on AWS or Azure Implement modern ...

application development (.NET Core, C#) or winforms/WPF (C#) development. Our client will provide you with training into: .NET 10.0, WPF, MVVM, Prism, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, ASP.NET Core Web API, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and Azure SQL. ...

such as Sitecore, Optimizely, Umbraco, Alterian, Immediacy, Ektron, Kentico, Sitefinity or dotnetnuke. Our client can provide you with industry recognised training in: .NET 10.0, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, ASP.NET Core Web API, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This ...

Kubernetes, EKS You have a good understanding of CQRS and event driven architectures Ideally you will also have some front end development experience with JavaScript/TypeScript/React.js or Angular You have strong analytical and problem solving skills You're collaborative with excellent communication skills What ...

Stack .NET development SQL Server & SQL Server Reporting Services Python for data engineering and Power BI Strong SQL knowledge Git/GitHub React/Javascript Experience within NHS or Healthcare sector is a must have Python software developer - Contract: Required Skillset: 5+ years Software engineering experience with Python ...

backend systems Build cloud-native solutions on Azure with containerization Implement RESTful APIs using Java integrated with banking platforms Develop full-stack features with JavaScript frameworks (Angular) Champion CI/CD, TDD/BDD, and engineering best practices Optimize Java applications for high-volume, high-availability systems What You Need ...

backend systems Build cloud-native solutions on Azure with containerization Implement RESTful APIs using Java integrated with banking platforms Develop full-stack features with JavaScript frameworks (Angular) Champion CI/CD, TDD/BDD, and engineering best practices Optimize Java applications for high-volume, high-availability systems What You Need ...

improvement efforts, introducing new ideas and technologies What You'll Bring Proven experience as a Full Stack Engineer or similar role Expertise in React, JavaScript/TypeScript, HTML, CSS , and responsive design principles Strong understanding of Back End technologies and best practices Passion for writing clean, well-tested code Experience ...

using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript). LLM experience: Practical experience with Large Language Models (LLMs) such as OpenAI, Anthropic, Mistral, or Llama, and tools like Ollama. Cloud Platforms: Proficiency ...

using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript). LLM experience: Practical experience with Large Language Models (LLMs) such as OpenAI, Anthropic, Mistral, or Llama, and tools like Ollama. Cloud Platforms: Proficiency ...

Tealium Event Stream, and Adobe Analytics Experience of integrating data sources via web and hypermedia APIs Proficient in Web Technologies like HTML, CSS, JavaScript, React.js, Next.js and Node.js, and in event-driven and eventual consistency systems using Kafka, .Net, Java, REST APIs, AWS, Terraform and DevOps Nice to have:experience ...

Essential skills include strong experience in test automation with an ETRM platform with as many of the following as possible: Programming & Scripting: Python, Java, JavaScript, C++, Scriban Web Technologies: RESTful APIs, HTTP, JSON, HTML, CSS, Node.js Databases: SQL Server, MySQL, PostgreSQL, MongoDB Tools & Frameworks: Git, Docker, Jenkins, Kubernetes, Agile (Scrum ...

automation and CI/CD testing workflows. Skills & Experience Back End: Proficiency in Node.js (preferred), or .NET/Java. Front End: Solid experience with JavaScript , React , and TypeScript . Strong foundation in Agile/Lean methodologies and modern software delivery practices. Working knowledge of UI/UX principles and prototyping ...

SENIOR SOFTWARE ENGINEER TO HAVE. Current enhanced DV clearance Experience with at least one or more of the following: Java, Python, C++, .NET, C#, JavaScript, React Experience mentoring juniors or leading a team Experience/Knowledge of automation IT WOULD BE NICE FOR THE SENIOR SOFTWARE ENGINEER TO HAVE. Cloud ...

using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript). LLM experience: Practical experience with Large Language Models (LLMs) such as OpenAI, Anthropic, Mistral, or Llama, and tools like Ollama. Cloud Platforms: Proficiency ...

using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript). LLM experience: Practical experience with Large Language Models (LLMs) such as OpenAI, Anthropic, Mistral, or Llama, and tools like Ollama. Cloud Platforms: Proficiency ...

Contribute to engineering standards and mentor teammates Experience 5+ years full stack web development experience 3+ years production React 3+ years production Node.js Strong JavaScript/TypeScript skills Experience designing and integrating REST APIs Solid experience with MySQL, Git, Express.js, Tailwind CSS and Next.js Comfort with AWS or GCP High ...

outcomes Experience designing and deploying scalable, observable, and maintainable systems Familiarity with microservices architecture (synchronous and asynchronous) Strong experience with NodeJS, TypeScript/JavaScript, and React Good understanding of cloud platforms (AWS, GCP, Azure) Solid grasp of database technologies and trade-offs Experience with automated testing and web security best ...