151 to 175 of 1,015 ECMAScript Jobs in London

combination of the below:Ideally over 7 years commercial development experience with C#/.Net/.Net CoreFront end coding ability with JavaScript, CSS, HTML and ReactA good understanding of SOLID principles, Event Driven Architecture (EDA) and Domain-Driven Design (DDD)Experience of RESTful API designExperience of Azure cloud development ...

applied experience Hands-on practical experience in system design, application development, testing, and operational stability Proficiency in modern programming languages, with strong experience in JavaScript/TypeScript (React, Node.js) required Experience developing, debugging, and maintaining code in a large-scale environment using modern programming and database querying languages Solid understanding ...

fundamentals with hands-on experience across the software development lifecycle, including system design, development, testing, release, and production support Proficiency in Python, Java, and JavaScript or TypeScript Experience building and supporting production-grade systems Experience in large-scale enterprise environments, developing, debugging, and maintaining code and data integrations using modern ...

your stack. Skills in the following areas are highly desirable:Java | Spring | SpringBoot | AWS | Azure | TDD | Pair Programming | CI/CD | Apache Camel | REST | JavaScript | React | Node | JUnit | Mockito | DDD | Docker | Kubernetes | JIRA | ConfluenceYou will be working on an interesting range of projects that deliver into Central Government customers ...

Essential Experience Proven experience leading and line-managing software engineering teams Strong hands-on development experience with C# and .NET Strong experience with JavaScript and modern front-end frameworks, ideally React Hands-on experience building and deploying solutions within Azure Experience with serverless architectures, particularly Azure Functions Working knowledge ...

building, and scaling automated test frameworks using modern tools (ideally Cypress or Playwright), and proficiency in at least one programming language such as TypeScript, JavaScript, Python, or Java. Demonstrated ability to architect automation solutions across frontend, backend, and APIs, ensuring maintainability, scalability, and fast feedback in CI/CD pipelines ...

Services (AWS)- Strong experience using GitHub Actions within a CI/CD pipeline- Solid Python knowledge- Experience with front-end technologies such as JavaScript and Node- Experience working with Web Application Firewall (WAF) technologies and Cloudflare features- Solid working experience with Git and SQL- Knowledge of Terraform and experience working ...

DevOps).Familiarity with database or microservices testing.Experience with new technologies, such as AI/ML within projects.Proficiency in programming/scripting languages: Java, Python, JavaScript, C#, or similar.Demonstrated experience in a technical leadership capacity, with the capability to guide and enhance the skills of team members.Completion of a bachelor ...

hands-on technical capacity.Strong software engineering expertise across modern languages and frameworks, including experience coding in one or more of: Python, Go, TypeScript, JavaScript or React.Experience delivering AI-enabled or Generative AI solutions within enterprise environments.Experience building enterprise-scale cloud-native applications using Kubernetes, containers, microservices and event-driven architectures.Strong ...

professional environment. You should have strong foundations in either backend or full stack development, ideally with hands-on experience in Python and a modern JavaScript framework such as React. You will be comfortable working with RESTful APIs, understanding application architecture, and writing clean, maintainable, and testable code. Experience working within ...

hands-on technical capacity. Strong software engineering expertise across modern languages and frameworks, including experience coding in one or more of: Python, Go, TypeScript, JavaScript or React. Experience delivering AI-enabled or Generative AI solutions within enterprise environments. Experience building enterprise-scale cloud-native applications using Kubernetes, containers, microservices ...

professional environment. You should have strong foundations in either backend or full stack development, ideally with hands-on experience in Python and a modern JavaScript framework such as React. You will be comfortable working with RESTful APIs, understanding application architecture, and writing clean, maintainable, and testable code. Experience working within ...

hands-on technical capacity.* Strong software engineering expertise across modern languages and frameworks, including experience coding in one or more of: Python, Go, TypeScript, JavaScript or React.* Experience delivering AI-enabled or Generative AI solutions within enterprise environments.* Experience building enterprise-scale cloud-native applications using Kubernetes, containers, microservices ...

Spring BootExtensive experience with Next.js for server-side rendering, static site generation, and API routes, with a focus on TypeScript integration.Solid understanding of modern JavaScript (ES6+), HTML5, and CSS3.Experience with state management libraries (e.g., Redux, Context API, Zustand) in a TypeScript environment.Strong experience consuming GraphQL APIs (e.g., Apollo Client), with ...

looking for Depth in at least one of these: Backend - Python in production, including running and supporting live services Frontend - TypeScript and modern JavaScript, with real React experience beyond the basics: context, async state, composition patterns Mobile - React Native and shipping to the app stores And whichever your area ...

stable as we grow. Security, compliance, and permissions models that protect our customers and meet enterprise‐grade standards. Tech Stack includes: Node.js (TypeScript & JavaScript), Dart/Flutter, C++, MySQL (Aurora), Redis, OpenSearch, AWS (Fargate, Lambda, CloudWatch), Docker, Terraform, GitHub Actions Requirements 8+ years of professional software engineering experience, specifically ...

Seeking 10+ years of software engineering experience in the following areas: Experience implementing distributed systems Strong experience with Python and JavaScript Experience building frontend applications using TypeScript and React Experience with various database technologies and query languages (we use Snowflake, MySQL, Neo4j, Kafka, OpenSearch, and more) Experience designing microservices ...

equivalent practical experience3+ years of professional software engineering experience (or equivalent)Strong experience with Full-Stack development workflows/processes and front-end familiarity (JavaScript, React/Next.js)Able to utilise AI coding tools for increased velocityExperience with containerization (Docker) and version control (Git)Proven ability to integrate with ...

friction and help you focus on solving meaningful problems.What skills do I need 8+ years of experience in full stack development, with expertise in JavaScript, HTML, and CSS.Expert in front-end frameworks such as React, Next.js, Tailwind.Experience in CMS platforms (such as Contentful and Sanity) and marketing tools (e.g. Google ...

Services (AWS) Strong experience using GitHub Actions within a CI/CD pipeline Solid Python knowledge Experience with front-end technologies such as JavaScript and Node Experience working with Web Application Firewall (WAF) technologies and Cloudflare features Solid working experience with Git and SQL Knowledge of Terraform and experience working ...

BRING:*** 5+ years of software engineering experience, including technical leadership.* Expertise in Java/Kotlin, Spring Boot, REST APIs, and MongoDB.* Experience with ReactJS, JavaScript, and TypeScript.* Strong understanding of secure coding (e.g., OWASP principles).* Strong experience with CI/CD, Git workflows, automated testing.* Experience leading AI feature ...

BRING:5+ years of software engineering experience, including technical leadership.Expertise in Java/Kotlin, Spring Boot, REST APIs, and MongoDB.Experience with ReactJS, JavaScript, and TypeScript.Strong understanding of secure coding (e.g., OWASP principles).Strong experience with CI/CD, Git workflows, automated testing.Experience leading AI feature development or integrating ML models ...

management), performance budgets, and telemetry by design.Primary technologies (coding language setup):Languages: Python 3.x (tooling and ML integration), C++17 (performance-critical components), TypeScript/JavaScript (web UIs).Web front-end: React (or Vue), modern build tooling, REST/GraphQL clients.Services: FastAPI/Flask, gRPC/HTTP; containerized on Linux.Build/ ...

LLMs, recommender systems, reinforcement learning) to enhance user experience in a meaningful business domain. Contribute across the tech stack : You’ll work in React (JavaScript/TypeScript) on the frontend and Python (FastAPI, SQLAlchemy) on the backend, shipping production-ready code and user-facing features in addition to innovative ...

judgment to say what a passing suite does and does not prove about meeting the requirements. Front-end development with TypeScript and JavaScript, building user interfaces in React and working with the Node.js tooling around them. Back-end service development in Java, implementing and consuming REST APIs. Preferred Qualifications Fluency ...