326 to 350 of 851 JavaScript Jobs in London

companies (not consultancies) ✔️ Happy to work 3-4 days/week from the London office 🌱 Bonus Points ➕ Experience with MongoDB, Elasticsearch, PostgreSQL ➕ Startup/scale-up exposure ➕ Familiarity with JavaScript/TypeScript stack ⭐ Benefits? ✨ Full ownership of a modern cloud-native stack ✨ Real impact in a small, product-led engineering team ✨ Work with globally recognised brands ✨ Share options in a More ❯

ability to bridge product and engineering Nice to have: Familiarity with trading, spread betting or investment products Knowledge of APIs, data flows, and modern languages like C#, Python or JavaScript/TypeScript Experience working in distributed, hybrid or outsourced engineering teams More ❯

ability to bridge product and engineering Nice to have: Familiarity with trading, spread betting or investment products Knowledge of APIs, data flows, and modern languages like C#, Python or JavaScript/TypeScript Experience working in distributed, hybrid or outsourced engineering teams More ❯

design principles and responsive design. Experience with prototyping tools and usability testing. Excellent communication and collaboration skills. Portfolio showcasing relevant design projects and process. Familiarity with HTML, CSS, and JavaScript is a plus. Experience working in Agile/Scrum environments. Knowledge of accessibility standards and inclusive design. Does this sound like your next career move? Apply today!Working with Certain More ❯

years building mobile apps in React Native, with 2+ years in a technical lead role Experience with large-scale SaaS applications Deep knowledge of React and React Native Strong JavaScript skills, preferably with TypeScript and GraphQL Understanding of Android and iOS platforms Experience with frontend testing frameworks Familiarity with modern build pipelines and tooling Knowledge of mobile UI/UX More ❯

into a role with ownership and technical leadership as the web development team expands. What we're looking for: 3+ years of commercial experience building interactive web applications with JavaScript/TypeScript and React . Experience with Node.js, Webpack , and modern development workflows. Strong understanding of client-side performance, cross-browser compatibility, and RESTful APIs . Experience with testing frameworks More ❯

and databases. Transform requirements into technical task specifications. Perform periodic code reviews according to process standards and best practices. Develop intuitive and responsive user interfaces using modern technologies (Golang, JavaScript). Implement RESTful APIs to facilitate communication between front-end and back-end components. Ensure scalability, security, and performance of server-side applications. Troubleshoot and debug issues across the entire More ❯

Selenium, and iOS functional automation. Experience with testing activities across the entire lifecycle of the project from inception to delivery. Front-End Development: Design and implement user interfaces using JavaScript, and frameworks such as React. Back-End Development: Develop and maintain server-side logic using Python. Manage APIs and integrate third-party services and tools. Ensure application data integrity and More ❯

and API integrations. Advanced coding skills in AMPscript for dynamic email and Cloud Page development, SQL for querying and managing data within SFMC, and proficiency in HTML, CSS, and JavaScript for responsive email designs and web content. Strong understanding of data segmentation, personalization, and automation based on user behavior, as well as data engineering for managing data extensions and relational More ❯

client is looking for a developer who is: An experienced PHP professional with proven success using the Laravel framework. Comfortable across the stack, with solid skills in HTML, CSS, JavaScript, and MySQL. A natural collaborator who thrives in a team environment but can drive their own projects forward. Passionate about writing clean, maintainable, and testable code. Excited by the challenge More ❯

and API integrations. Advanced coding skills in AMPscript for dynamic email and Cloud Page development, SQL for querying and managing data within SFMC, and proficiency in HTML, CSS, and JavaScript for responsive email designs and web content. Strong understanding of data segmentation, personalization, and automation based on user behavior, as well as data engineering for managing data extensions and relational More ❯

and API integrations. Advanced coding skills in AMPscript for dynamic email and Cloud Page development, SQL for querying and managing data within SFMC, and proficiency in HTML, CSS, and JavaScript for responsive email designs and web content. Strong understanding of data segmentation, personalization, and automation based on user behavior, as well as data engineering for managing data extensions and relational More ❯

Services (AWS): EC2, VPC, RDS, S3, IAM, ECS/EKS, Lambda Kubernetes DBMS experience such as MySQL or PostgreSQL Having experience with microservices architecture, Amazon Web Services, PHP and JavaScript frameworks such as Vue.js would be highly desirable but not essential. Role overview at a glance DevOps Engineer Office location – Ideally London or South Wales Flexible and remote working (expectations More ❯

/weekends during major sports events. What you’ll bring 1–3 years in technical operations, reliability/SRE, support engineering, or data operations. Comfortable with a scripting language (JavaScript or Python); familiarity with a strongly-typed language (Rust/Java/C/C++) is a plus. Hands-on debugging skills: reading logs, calling API endpoints, basic troubleshooting on More ❯

/weekends during major sports events. What you’ll bring 1–3 years in technical operations, reliability/SRE, support engineering, or data operations. Comfortable with a scripting language (JavaScript or Python); familiarity with a strongly-typed language (Rust/Java/C/C++) is a plus. Hands-on debugging skills: reading logs, calling API endpoints, basic troubleshooting on More ❯

/weekends during major sports events. What you’ll bring 1–3 years in technical operations, reliability/SRE, support engineering, or data operations. Comfortable with a scripting language (JavaScript or Python); familiarity with a strongly-typed language (Rust/Java/C/C++) is a plus. Hands-on debugging skills: reading logs, calling API endpoints, basic troubleshooting on More ❯

/weekends during major sports events. What you’ll bring 1–3 years in technical operations, reliability/SRE, support engineering, or data operations. Comfortable with a scripting language (JavaScript or Python); familiarity with a strongly-typed language (Rust/Java/C/C++) is a plus. Hands-on debugging skills: reading logs, calling API endpoints, basic troubleshooting on More ❯

rate, and other metrics. Champion continuous improvement - lead retros, root cause analysis, and quality initiatives to reduce bugs, unblock teams, and increase predictability. Have a strong background in: Node.js, JavaScript, Express, MySQL, preferably also React. Infrastructure & DevOps experience: AWS, Docker, Terraform, Bitbucket, TestRail, Postman And proven experience in: Leading engineering teams (line managing Seniors and below) in a fast-paced More ❯

modeling, vulnerability management, and access control mechanisms. Experience with AWS, Kubernetes, Service Mesh, and API Security (including authentication and authorization). Proficiency in programming languages such as Python, Java, JavaScript, GoLang, and Rust. Familiarity with Agile methodologies like SCRUM, along with proven project management skills to oversee multiple security projects simultaneously. Desired: Independent, proactive, and detail-oriented, with a commitment More ❯

allowing our customer coverage to scale Qualifications Your Experience Experience as a Security Incident Responder or SOC analyst/manager Experience with development and maintenance of scripts in Python JavaScript or PowerShell is a plus Experience with security design and architecture, content development, workload automation and use-cases Experienced with technologies such as EDR, SIEM, SOAR, NGFW and their ecosystems More ❯

lifecycle. Design and build both Canvas and Model-Driven Power Apps. Configure and customise Dynamics 365, SharePoint Online, and Power Pages, including the use of plugins, custom workflow assemblies, JavaScript, and extended Azure/Office 365 capabilities. Work with Microsoft Power BI to support reporting and data visualisation requirements. Maintain an awareness of the broader Microsoft solutions suite and how More ❯

applications built using the Power Platform. Lead in the design, configuration, and customisation of Power Pages (portals), Dynamics 365 and SharePoint Online solutions, including plugin development, custom workflow assemblies, JavaScript, and extended Azure/Office 365 integrations. Deliver innovative solutions using Dynamics 365, Power Platform (including Power Pages) and SharePoint Online across all stages of the software development lifecycle. Create More ❯

applications built using the Power Platform. Lead in the design, configuration, and customisation of Power Pages (portals), Dynamics 365 and SharePoint Online solutions, including plugin development, custom workflow assemblies, JavaScript, and extended Azure/Office 365 integrations. Deliver innovative solutions using Dynamics 365, Power Platform (including Power Pages) and SharePoint Online across all stages of the software development lifecycle. Create More ❯

/Consultant supporting Cloud workloads across a variety of implementations. - Content and digital asset management. - Experience in a high-level programming/scripting language(s). (e.g. Python, Golang, JavaScript, Java, C#, etc.). - AWS Certifications (e.g. AWS Solutions Architect Professional, AWS DevOps Professional, etc.) - Master's degree in Computer Science or equivalent professional or military experience. Amazon is an More ❯

collaboration skills. Experience in travel or e-commerce is a plus. Preferred Qualifications Knowledge of accessibility standards and inclusive design practices. Familiarity with front-end development technologies (HTML, CSS, JavaScript). Experience with data-driven design and A/B testing. Strong prototyping skills using tools like Figma or code-based approaches. Expedia Group is proud to offer a wide More ❯