601 to 625 of 739 ECMAScript Jobs in London

strategies and creating tailored experiences for different customer segments. Extensive hands-on experience and knowledge of subscription platforms like Piano, Zuora, or equivalent tools and Proficiency in HTML, CSS, JavaScript, Angular, APIs etc to create and maintain landing pages, paywall experiences, etc. Strong analytical skills, including experience with SEO, Google Analytics, and Webmaster Tools. Effective communication and presentation skills, with More ❯

strategies and creating tailored experiences for different customer segments. Extensive hands-on experience and knowledge of subscription platforms like Piano, Zuora, or equivalent tools and Proficiency in HTML, CSS, JavaScript, Angular, APIs etc to create and maintain landing pages, paywall experiences, etc. Strong analytical skills, including experience with SEO, Google Analytics, and Webmaster Tools. Effective communication and presentation skills, with More ❯

of data science and statistical techniques to healthcare data. Ability to manage a technical product lifecycle, including through end-user feedback and testing Desirable Experience in R and in Javascript Proficiency using DBT +/- Snowflake +/- Azure Personal Behavoirs Essential Proven experience in the ability to interact with colleagues at all levels both clinical and non-clinical within More ❯

scaling high-performance contractor networks with measurable results Experience implementing and optimising AI-powered solutions Strong understanding of support metrics and performance optimisation Technical knowledge of CSS, HTML, and JavaScript (beginner level accepted) Experience with knowledge base management and optimisation Strong communication and change management skills Data-driven approach to problem-solving and decision-making Nice-to-Haves Experience in More ❯

Bing Ads, TikTok Ads, Pinterest Ads, GA4, Google Search Console, Google Tag Manager, Looker Studio, Google Cloud Console (Big Query), Google Apps Scripts Strong working knowledge of HTML, basic JavaScript, Python Proficiency gathering marketing insights for analysis and reporting in platforms such as Hubspot Marketing Hub, Salesforce Marketing Cloud/Pardot, Meta for Business (Facebook Business Manager), Linkedin Insights and More ❯

Supply Chain Data Analyst Location: London/Ipswich Join the exciting journey of one of the UK's largest nuclear projects at Sizewell C! The Sizewell C (SZC) project requires a Data Analyst to contribute to the Civil Works Alliance More ❯

About the Job Java Javascript Developer ?" Financial Systems ?" Stratford East London Our Client is specialist software company developing software for the insurance sector. They are currently looking to recruit a Java and Javascript Developer with at least 2 to 5 years commercial experience. Must be familiar with creating UI, web service calls, SOAP. Any experience of developing software for the More ❯

you need to have A solid background in support - ability to troubleshoot, find workarounds, and support high-end, high-value clients Good exposure to UI development with scripting skills - JavaScript Tech tools & skills such as CSS, Angular, Ajax, or React would be very useful SQL skills are also needed This is a high-priority hire, so interviews will be happening More ❯

is an exciting opportunity to contribute to large-scale projects in a highly agile, fast-paced environment. We are seeking Automation Test Engineers with strong expertise in Cypress and JavaScript, who can work independently and collaboratively within Agile teams. The ideal candidates will play a key role in ensuring product quality across web and API layers, integrating seamlessly into DevOps … pipelines, and driving continuous improvement in testing practices. Job Responsibilities/Objectives Design, develop, and maintain automated test scripts using Cypress and JavaScript Execute cross-browser testing using tools like BrowserStack or LambdaTest Integrate automation suites with CI/CD pipelines (preferably GitLab) Collaborate closely with development and QA teams in Agile/Scrum environments Use tools like Jira, XRAY …/Experience Experience with writing automation scripts in Postman or Ready API Accessibility Testing (WCAG 2.1) experience using any industry standard tool set Strong experience in managing Cypress Automation, JavaScript Experience in cross-browser testing (BrowserStack/LambdaTest) Proficiency in integrating automation tests with CI/CD pipelines, preferably using GitLab Strong Agile/DevOps ways of working with good More ❯

practices. Mentor and guide large technical teams, promoting high standards in code quality, DevSecOps, and automation. Drive the development of cloud-native applications, with a strong focus on modern JavaScript frameworks and API/microservices architecture. Monitor and improve engineering maturity across teams. Collaborate closely with stakeholders, manage technical dependencies, and communicate effectively through strong storytelling and influence. Essential Skills … Experience: Strong background in JavaScript frameworks, microservices, and API development. Experience in building modern applications with cloud-native architectures. Proven leadership in large technical teams, with an Agile and product-focused mindset. Expertise in engineering culture, DevSecOps, and automation. Experience with public cloud platforms (e.g., AWS, GCP, Azure). Strategic thinking, innovation, and thought leadership in a technical context. Ability More ❯

practices. Mentor and guide large technical teams, promoting high standards in code quality, DevSecOps, and automation. Drive the development of cloud-native applications, with a strong focus on modern JavaScript frameworks and API/microservices architecture. Monitor and improve engineering maturity across teams. Collaborate closely with stakeholders, manage technical dependencies, and communicate effectively through strong storytelling and influence. Essential Skills … Experience: Strong background in JavaScript frameworks, microservices, and API development. Experience in building modern applications with cloud-native architectures. Proven leadership in large technical teams, with an Agile and product-focused mindset. Expertise in engineering culture, DevSecOps, and automation. Experience with public cloud platforms (e.g., AWS, GCP, Azure). Strategic thinking, innovation, and thought leadership in a technical context. Ability More ❯

Teams at Starling Teams do great things here at Starling, striving to continue changing banking for good. Front-End Development Our front-end applications are built in-house using JavaScript/TypeScript, React, and other technologies. We're Hiring We're currently looking for individuals interested in working on the admin application. This application is used by all Operations team More ❯

is looking to recruit a Front End Java developer with at least 3 to 5 years solid development experience. Must have the following skills: HTML, XHTML, HTML5 ** CSS2, CSS3 ** JavaScript ** AJAX ** JSON, JSONP ** XML, XSLT, XSD ** jQuery and extensive use of plugins Social Media APIs and aggregators e.g. GIGYA OO Design and Programming Web debugging experience and tools Responsive web More ❯

to perform at their best. Requirements Must-Have Skills & Experience 3+ years of experience building automation workflows with Make, Zapier, or similar platforms Proficiency with APIs and scripting in JavaScript or Python Hands-on experience integrating LLMs into business processes Ability to convert complex business requirements into scalable automation solutions Familiarity with digital marketing operations (e.g., campaign reporting, QA, content … data privacy in automation contexts Ability to collaborate effectively with both technical and non-technical stakeholder Current Internal Tech Stack: Automation: Make, Zapier AI: OpenAI API, ChatGPT, Claude Programming: JavaScript, Node.js, Python Integrations: Google Sheets, Analytics, Ads, Meta, LinkedIn, Slack, and other core marketing tool. Benefits Fully Remote within Europe CET OR GMT TIME ZONE More ❯

be heavily considered Experience using source control (Git, GitHub) and feature branching strategies Strong familiarity with general modern web and mobile application development, including hands-on experience working with JavaScript (Typescript preferred) and Python stacks Cross-functional team collaboration experience, especially working with engineers More ❯

have 5 years + of in-depth, hands on experience and come from a strong Salesforce platform & development background. Essential skills include: Salesforce development (Apex, LWC, SOQL), Certifications (PD2, JavaScript Developer 1, Cloud). Ci/CD Tools (Copado or Gearset) Proven leadership and team mentoring skills are a must. Exciting opportunity to work on large scale products, within an More ❯

API Management, Cosmos.db, Azure Active Directory (Entra ID) and others. The Portal is built to an n-tier architecture using node.js hosted on Azure and includes technologies such as JavaScript, Typescript, next.js, React, OAuth, OpenId and related frameworks. There is some use of a React base customer journey framework (Teleportal) delivered and extended by the DP sub-contractor Kerv Digital. More ❯

Support Digital Transformation deployment, go live, service introduction and post go live activities. * Develop and provide technical guidance and oversight of customisations, including plugins, workflows, Power Automate flows, and JavaScript, ensuring efficient, reusable, and well-documented code. * Integrate D365 CE with other applications and systems using tools like Azure Logic Apps, Power Automate, and custom APIs. * Oversee the Dynamics … What you need: * In-depth understanding of the Dynamics 365 Customer Engagement (CE) platform, including its architecture, entities, relationships, security model, and customisation. * Proficiency in programming languages including C#, JavaScript and JSON with strong knowledge in Dynamics CRM and Power Platform, Unified Service Desk (USD), SQL Server Reporting Services (SSRS), SSIS packages development and Azure Cloud and integration. * Proficiency in More ❯

Support Digital Transformation deployment, go live, service introduction and post go live activities.* Develop and provide technical guidance and oversight of customisations, including plugins, workflows, Power Automate flows, and JavaScript, ensuring efficient, reusable, and well-documented code.* Integrate D365 CE with other applications and systems using tools like Azure Logic Apps, Power Automate, and custom APIs.* Oversee the Dynamics … arise.What you need:* In-depth understanding of the Dynamics 365 Customer Engagement (CE) platform, including its architecture, entities, relationships, security model, and customisation.* Proficiency in programming languages including C#, JavaScript and JSON with strong knowledge in Dynamics CRM and Power Platform, Unified Service Desk (USD), SQL Server Reporting Services (SSRS), SSIS packages development and Azure Cloud and integration.* Proficiency in More ❯

have 5 years + of in-depth, hands on experience and come from a strong Salesforce platform & development background. Essential skills include: Salesforce development (Apex, LWC, SOQL), Certifications (PD2, JavaScript Developer 1, Cloud). Ci/CD Tools (Copado or Gearset) Proven leadership and team mentoring skills are a must. Exciting opportunity to work on large scale products, within an More ❯

multiple eTrading React Developers on a long-term contract basis for a business-critical project in the front-office space. What you'll need to succeed Extensive React and Javascript development experience within a front-office/eTrading environment - Mandatory. Strong knowledge of a range of asset classes, preferably FX. 10+ years' frontend development experience within financial services. Strong proven More ❯

cross-functional teams, innovating for increased performance and reliability, challenging the "status quo" and doing things differently. You'll be backend-focused, using Rust heavily, with exposure to Python, JavaScript, and C++. Cloud-native development focusing on AWS and large-scale distributed systems. Work remotely across Europe with monthly tech team meetups to get the gang together. Competitive salaries with More ❯

For: 5+ years of Salesforce Marketing Cloud experience (8+ years total technical experience) Proven ability to lead technical teams and client engagements Expertise in AMPScript, SSJS, SQL, HTML, CSS, JavaScript Strong integration experience (REST/SOAP APIs) Proficiency in GitHub and full project lifecycle delivery Experience across SFMC, Salesforce Core, Data Cloud, and Personalization Studio Key Skills: Technical leadership & solution More ❯

native PaaS features; databases, app services, autoscaling. You will have a strong working knowledge of the following: Azure architecture Networking (TCP/IP, VPNs, DNS, load balancing) Bash, Powershell, JavaScript, Python scripting The salary on offer for this role is £80,000 plus benefits. More ❯

this role is for you! Key Skills & Experience Required: WordPress Development (custom themes, plugins) HTML & CSS (responsive design, cross-browser compatibility) HTML Email Coding (email client compatibility, responsive email) JavaScript (jQuery experience a plus) Front-End Development Principles (UX, accessibility) PHP (foundational understanding) Website Troubleshooting & Debugging (browser developer tools) Experience collaborating with design teams Website Animations/Interactive Features Excellent More ❯