26 to 50 of 3,220 JavaScript Jobs in London

architecture, and reduce technical debt, whilst mentoring junior engineers and contributing to a culture of continuous learning and innovation. About you Strong proficiency in JavaScript, TypeScript and React, with a solid grasp of modern ES6+ features and best practices Ability to build accessible user interfaces that comply with accessibility standards More ❯

architecture, and reduce technical debt, whilst mentoring junior engineers and contributing to a culture of continuous learning and innovation. About you Strong proficiency in JavaScript, TypeScript and React, with a solid grasp of modern ES6+ features and best practices Ability to build accessible user interfaces that comply with accessibility standards More ❯

architecture, and reduce technical debt, whilst mentoring junior engineers and contributing to a culture of continuous learning and innovation. About you Strong proficiency in JavaScript, TypeScript and React, with a solid grasp of modern ES6+ features and best practices Ability to build accessible user interfaces that comply with accessibility standards More ❯

architecture, and reduce technical debt, whilst mentoring junior engineers and contributing to a culture of continuous learning and innovation. About you Strong proficiency in JavaScript, TypeScript and React, with a solid grasp of modern ES6+ features and best practices Ability to build accessible user interfaces that comply with accessibility standards More ❯

we primarily work with (in rough order of importance to our business, butnot necessarily what you'd work with directly in this role): Java JavaScript Angular MySQL/MariaDB Spring AWS Groovy Maven Git Ansible HTML/CSS NodeJS Azure Docker/Podman Kubernetes Jenkins CentOS/Alma/Rocky More ❯

within Azure DevOps. • Design and implement secure RESTful APIs. Skills, Knowledge and Expertise Advanced knowledge of the following technologies: Front-end Tech: HTML, CSS, JavaScript, TypeScript, AngularJS & Angular, NodeJS. Back-end Tech: C#, ASP .NET/.NET Framework/.NET Core, WebAPI/REST API, Nunit, Moq, SQL Server, Entity More ❯

Agile, CI/CD, TDD Extensive AWS experience (CloudFormation, IAM, VPC, Load Balancers, AMI, CloudWatch, EventBridge, EC2, S3, Lambda) Desirable Skills & Experience UI skills: JavaScript, jQuery, HTML5, CSS Experience with React, TypeScript, Node.js Web API skills including ASP.NET Web API MS SQL: T-SQL Domain experience in finance (Investment Management More ❯

Experience Required: Degree in Computer Science, Software Engineering, or related field. 3-5 years professional experience as a Full Stack Developer. Proficiency in PHP, JavaScript, React, NEXT.js, HTML/CSS, responsive UI frameworks. Experience building scalable REST APIs using Python, Java, Golang, PHP, Node.js, etc. Knowledge of web performance tools More ❯

related STEM field 0-3+ years of programming experience (C# and Python preferred) Experience building web applications using HTML, CSS, and a modern JavaScript UI library/framework (Angular or React preferred) Excellent verbal and written communication skills Intellectual curiosity, strong analytical and quantitative skills, and a high degree More ❯

Knowledge of ORM libraries like SQLAlchemy or Django ORM. Familiarity with containerization tools like Docker. Basic understanding of front-end technologies (e.g., HTML, CSS, JavaScript) for integration purposes. Experience with testing frameworks like PyTest, UnitTest, or similar. Soft Skills: Excellent problem-solving and analytical skills. Strong communication and collaboration abilities. More ❯

of working in a professional and agile software development environment. Strong knowledge of C# and the .NET Framework, especially ASP.NET. Strong knowledge of HTML5, ECMAScript 6+, CSS3 and the Web Platform. In-depth experience in at least one of the following 3 areas: Offline-first, mobile-first Progressive Web Applications More ❯

of working in a professional and agile software development environment. Strong knowledge of C# and the .NET Framework, especially ASP.NET. Strong knowledge of HTML5, ECMAScript 6+, CSS3 and the Web Platform. In-depth experience in at least one of the following 3 areas: Offline-first, mobile-first Progressive Web Applications More ❯

will be operating the applications/services you build and contribute to the wider project development. Qualifications Preferably full-stack.Net Core with (HTML, CSS, Javascript) Experience with ASP .Net MVC 5, REST Web APIs Practical development knowledge of Azure services .NET Web API, Rest and OData Web Services In depth More ❯

Darwin systems, Origin and Evole. Broad experience across multiple programming languages and frameworks with in-depth skills in at least one of the following: JavaScript, Typescript, C# Strong experience in one or more of the following frameworks Angular, NodeJS, Express.JS, .NET, Less(Sass) Experience with Unit Testing and Integration Testing More ❯

OData, REST, SOAP, FTP/SFTP, JDBC, CSV, XML, JSON, XSL, encryption standards such as PGP, x509. Minimum 5 years of experience working on JavaScript, CSS3 and HTML5 and third-party libraries such as React Js, Angular, jQuery Minimum 5 years of experience working server-side programming languages such as More ❯

experience with C#, ASP.NET Core, TypeScript, and Vue.js (or equivalent experience with React/Angular). You’re comfortable with component-based architecture, modern JavaScript, and building scalable, maintainable solutions. Deep Architectural Knowledge: Proven experience in full-stack development with a focus on designing and implementing complex systems. You’re More ❯

practices and ensure applications meet performance, reliability, and compliance standards. About The Candidate Strong experience in full-stack development, with expertise in .NET (C#), JavaScript/TypeScript, React, or equivalent modern technologies. Familiarity with Microsoft Azure, including containerization, serverless functions, and microservices architectures. Experience designing RESTful microservices and distributed systems More ❯

necessary to mitigate risk or implement new ideas Required Qualifications: 3+ years of experience as Java Developer focused on Spring MVC Framework. 3+ of JavaScript Framework coding and webapp integration 2+ years basic/working Knowledge of Linux environments. 2+ years working Knowledge of Source Control Management (SCM), Rapid Development More ❯

Experience in data and orchestration tools including some of dbt, Apache Airflow, Azure Data Factory. Experience in programming languages including some of Python, Typescript, Javascript, R, Java, C#, producing services, APIs, Function Apps or Lambdas. The use of various standard data formats including CSV, TSV, Json, XML and Avro. Experience More ❯

Nexus, etc. Good understanding on Containerisation solutions, e.g., K8, Docker, Kaniko, etc. Proficiency in at least one of the standard programming languages – Java/JavaScript, C#, Python, or similar Object-oriented programming Proficiency in at least one of the standard scripting languages – Terraform, Bash, Ansible, etc. Good understanding of Software More ❯

positions, we’d welcome a confidential conversation. We’re especially interested in those with experience in: Software development using C#/.NET , Java , or JavaScript frameworks (such as Angular, React, Node.js) Cloud and DevOps tools (Azure, AWS, CI/CD, containerisation with Docker/Kubernetes) API development , integration, and microservices More ❯

positions, we’d welcome a confidential conversation. We’re especially interested in those with experience in: Software development using C#/.NET , Java , or JavaScript frameworks (such as Angular, React, Node.js) Cloud and DevOps tools (Azure, AWS, CI/CD, containerisation with Docker/Kubernetes) API development , integration, and microservices More ❯

positions, we’d welcome a confidential conversation. We’re especially interested in those with experience in: Software development using C#/.NET , Java , or JavaScript frameworks (such as Angular, React, Node.js) Cloud and DevOps tools (Azure, AWS, CI/CD, containerisation with Docker/Kubernetes) API development , integration, and microservices More ❯

positions, we’d welcome a confidential conversation. We’re especially interested in those with experience in: Software development using C#/.NET , Java , or JavaScript frameworks (such as Angular, React, Node.js) Cloud and DevOps tools (Azure, AWS, CI/CD, containerisation with Docker/Kubernetes) API development , integration, and microservices More ❯

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's in it More ❯