51 to 75 of 313 JavaScript Jobs in the City of London

.NET Developer - Global Phenomenon - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client has created a global phenomenon, connecting people online to unique travel experiences, in more than 60,000 cities and 180 countries. As they approach their 10th anniversary they are looking … MVC, C# and Azure SQL. You will receive industry recognized training in all aspects of: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. Our client offers a structured career progression programme. It is common place for developers within their firm to receive their first promotion (and pay rise!) within More ❯

trading tools Ensure performance, security, and scalability of front-end systems What You Bring Bachelor's degree in Computer Science or closely related field Strong experience with React, TypeScript, JavaScript, HTML/CSS, NodeJS Knowledge of Git, Webpack, Jenkins, and Agile workflows Experience in financial services or trading systems (preferred) Strong problem-solving and UI/UX skills This opportunity More ❯

Shopify’s development ecosystem, including Shopify Plus, Liquid, Storefront API, Admin API, GraphQL, Shopify Functions, and third-party app integrations. Are also substantially experienced in HTML/CSS/JavaScript, React, PHP, and AWS. Have a proven track record of leading a small development team as a Tech Lead, mentoring engineers, driving technical direction, and ensuring successful project deliveries. Are More ❯

technical documentation and support deployment activities Required Skills & Experience: Proven architecture and development experience with .NET Core (v3.1 or higher), ASP.NET, and full-stack technologies Strong knowledge of HTML5, JavaScript, CSS3, React.js, AJAX, and IIS Familiarity with MS SQL Server and basic Oracle database knowledge Insurance domain expertise, with London Market experience preferred Experience with Policy Administration Systems (PAS); AdvantageGo More ❯

exploratory testing and champion quality throughout the SDLC Support secure deployment and testing practices in containerised environments Tech You’ll Work With: Automation tools: Playwright, Cypress, JUnit, Jasmine Languages: JavaScript/TypeScript, Java or Kotlin DevOps & Infra: Docker, Kubernetes, GitLab CI, Bitbucket Testing tools: Postman, browser dev tools, SAST/DAST integrations Environments: Unix and Windows What You Bring: Hands More ❯

delivering complex projects. Demonstrable strong experience working on APIs, including design, development, and integration (RESTful, GraphQL). Proficiency in Node.js for specific backend services and tooling. Solid understanding of JavaScript for front-end integration and broader development needs. Experience with relational databases (e.g., PostgreSQL, MySQL). Familiarity with version control systems (e.g., Git). Understanding of agile development methodologies. Excellent More ❯

Key Responsibilities: Design, develop, test, and deploy enhancements and customizations within the Endur platform. Implement business logic using JVS (JavaScript in Endur) and OpenComponents . Develop and maintain TPR (Transaction Post-Processing Reports) , deal templates , reporting tools , and interfaces (e.g., AVS, Connex, OLF scripts) . Integrate Endur with external systems (e.g., market data, trade capture, settlement, accounting). Work closely More ❯

full-stack experience as Senior Developer around digital applications, software engineering, microservices and cloud. This could include Core Java, Spring Boot, Hibernate/JPA and UI using React, Ember, JavaScript or HTML. FIX Experience Cloud experience with containerization (Docker, Kubernetes), Database (Relational and NoSQL), Messaging (RabbitMQ), Repository (BitBucket), or Helm Charts would be highly regarded (not all necessary). Good More ❯

involving large datasets and workflow automation. What We’re Looking For 3+ years of experience building full-stack applications in production environments. Strong proficiency in: Backend : Python, Django Frontend : JavaScript, React, Next.js Version Control : Git Ability to design and maintain performant, data-heavy backend systems with external API integrations. Experience developing responsive UIs that perform well across devices and browsers. More ❯

Zereheight for design systems • Experience creating automation processes for component governance • In-depth knowledge of design patterns, UI/UX principles, and front-end technologies such as HTML, CSS, JavaScript, and BeastNative. • Strong understanding of software architecture principles. • Experience with version control systems (e.g., Git), package managers, and dependency management tools. • Excellent communication and interpersonal skills, with the ability to More ❯

ll need to be comfortable working across teams and bringing ideas to life quickly in a fast-paced, collaborative environment. Key qualifications include: Technical Skills Proficiency in HTML5, CSS3, JavaScript, and at least one modern framework (e.g. React, Vue.js, Angular) Experience with back-end development using Node.js, PHP, or Python Understanding of database technologies like MySQL, PostgreSQL, or MongoDB Familiarity More ❯

is highly desirable. At least 5 years’ experience developing enterprise applications using the Microsoft technology stack, including: Proficiency in C# .NET and SQL Server. Solid working knowledge of React, JavaScript, GraphQL, REST and SOAP APIs. A deep understanding of tiered application architectures, cloud infrastructure, and serverless technologies. Hands-on experience with modern UI state management and modular development. Strong background More ❯

on inference and evaluation pipelines. You Might Be a Great Fit if You Have strong commercial software-engineering experience, with a fluency in Python and comfortable in TypeScript/JavaScript . Have built and operated data-intensive systems (batch & streaming) in a cloud environment (AWS, GCP, or Azure). Know your way around relational, columnar, and KV/graph databases More ❯

embedded within our core engineering group, contributing to the development of robust systems that generate and manage automated documentation workflows for banks. While the broader tech stack includes Node.js, JavaScript, and various database technologies, this role focuses primarily on Java and backend architecture, especially for candidates without deep JavaScript experience. Key Responsibilities Develop, maintain, and scale backend services in Java … Hibernate) Practical knowledge of database systems (e.g., PostgreSQL, MySQL, MongoDB) Strong grasp of software engineering fundamentals and clean coding practices Basic exposure to or willingness to learn Node.js and JavaScript Understanding of microservices architecture and API design Experience working on systems that require reliability, scalability, and performance tuning Exposure to financial services or regulated environments Cloud experience (AWS, Azure) Experience More ❯

.NET Developer, .NET 9, C# - Global Record Label - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) We are pleased to announce that our client, one of the largest and most recognised brands within the music industry, is seeking .NET Developer to work out of … .NET Core/ASP.NET MVC, C# and Azure SQL. Our client can provide training into: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. My client offers flexible working hours, home working and amazing offices (onsite cinema, pool tables, bar, free canteen, gym). These positions are dope!!! Location: London More ❯

.NET Developer, .NET 9, C# - Computer Gaming Company - London (Tech stack: .NET Developer, .NET 9, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Having sold over 100 million games consoles and over 500 million games over the last decade, my client is undoubtedly the world's most recognised computer gaming brand. We … Core/ASP.NET MVC, C# and Azure SQL. Our client can provide with exposure to: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. This is a truly amazing opportunity to work for a forward thinking and progressive company, one that can provide you with an on-going training programme More ❯

Job Title: Front End Developer (Wordpress) Job Type: Permanent (1 year FTC) Location: London/Remote Salary: £50,000-£60,000 DOE Skills: JavaScript, HTML, CSS, React, Vue, Wordpress, AWS We are seeking a skilled and detail-oriented Front-End Developer to join our dynamic team on a 12-month contract. As a key member of our development team, you … across various browsers and devices ● Help maintain and improve CI/CD setups Required Qualifications ● 3+ years of experience in front-end development ● Strong proficiency in HTML, CSS, and JavaScript (ES6+) ● Strong understanding of WordPress and building WordPress websites ● Experience working in a CI/CD environment ● Experience with one or more modern JavaScript frameworks (e.g., React, Vue, Angular) ● Familiarity More ❯

.NET Developer, Graduate/Junior - Computer Gaming Company - London (Tech stack: Graduate/Junior .NET Developer, .NET 9, C#, Blazor, Azure, JavaScript, HTML5, CSS3, Agile, Programmer, Full Stack Engineer, Architect, Graduate/Junior .NET Developer) Having sold over 100 million games consoles and over 500 million games over the last decade, my client is undoubtedly the world's most recognised … or through a placement year in industry. You will follow the firm's career progression programme and will receive industry recognised training in: .NET 9, Blazor, EF Core, Azure, JavaScript, HTML5, CSS3, Agile, TDD, BDD, Azure SQL and MongoDB. This is a truly amazing opportunity to work for a forward thinking and progressive company, one that can provide you with More ❯

.NET Developer - Fastest-Growing Internet Co Ever - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is changing the way merchants and consumers connect with each other worldwide, and the change has barely started. In 2024, they were the fastest-growing internet company …/ASP.NET MVC, C# and Azure SQL. Our client can provide you with training into: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. These positions come with an extensive benefits package including bonuses, pension, private medical healthcare, a training budget and 25 days holiday. Location: London, UK/Remote More ❯

.NET Developer (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is a global video technology company with a strong presence in 17 countries. Using cutting edge technologies they help their clients join the dots on Facebook, YouTube and the social web. Their mission … give you the opportunity to work on enterprise level software development projects and training into: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. You will follow the firm's rapid career progression programme. Previous top performers have achieved several promotions (and pay rises) within 12 months of joining. If More ❯

ll help deliver and maintain the core web applications that support our internal teams and client-facing services. The team operates within a modern, stabilised framework built on Next.js (JavaScript), Tailwind CSS, and C# 9 (.NET Core), and is now focused on scaling feature delivery and increasing technical maturity. You’ll be joining a team that recently moved from chaos … a highly experienced team lead and contribute across both front-end and back-end development. Essential Skills & Experience 3+ years of full stack web development experience. Strong proficiency in JavaScript, React.js, and Next.js. Solid back-end development skills in C# 9 and .NET Core Web APIs. Experience working with SQL Server (MSSQL), including stored procedures and schema work. Styling with More ❯

.NET Developer - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) After 15 years' experience in the fashion industry, our client has a mission to change the way people find clothes they love by combining technology with the personal touch of seasoned style experts. Our … ASP.NET MVC, C# and Azure SQL. There are opportunities for training into technologies such as: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. Their benefits include the following: Bonus (10-15%). Share options. Private medial healthcare (family plan included). Company pension (15% company contribution). Home working More ❯

.NET Developer, .NET 9, C#, Agile - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is a global innovator who builds software products and apps that are defining the way individuals and teams work today. They make it easy for users and to … you the opportunity to work on enterprise level software development projects and provide training into: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. The company is quick to recognize talent and keen to nurture and develop it, as such your career with the company will go as far as More ❯

with the significant opportunity for you to share and grow your skillset. Qualification : BSc or MSc degree in Computer Science, Data Science or a related technical field Python or Javascript development experience(C# Experience is a plus) SQL experience (No-SQL experience is a plus) Experience : 3+ years Experience in Data Engineering Strong Data Engineer Language Skills (Python, SQL, Javascript More ❯

practices. Skills 5+ years of experience in application security, penetration testing, or software security engineering. Strong knowledge of secure coding principles in one or more languages (e.g., Python, Java, JavaScript, Go, .NET). Hands-on experience with SAST, DAST, SCA and security automation in CI/CD pipelines. Familiarity with cloud security (AWS, Azure, GCP) and container security (Docker, Kubernetes More ❯