2,276 to 2,300 of 3,033 ECMAScript Jobs

build automation frameworks, work closely with developers to integrate testing into CI/CD, and champion quality engineering across the product lifecycle. With tools like Playwright, Cypress, and modern JavaScript/TypeScript frameworks, this role is perfect for someone with strong technical skills who wants to own the test automation strategy. Day-to-day responsibilities Design, build, and maintain robust … automation frameworks using Playwright/Cypress Develop automated tests in TypeScript/JavaScript Collaborate with developers to embed testing within CI/CD pipelines Perform functional, regression, and end-to-end testing Ensure tests are reliable, scalable, and provide fast feedback Track and report quality metrics to stakeholders Contribute to defining quality standards and best practices across the team Investigate … and resolve test failures, ensuring stability of releases What you bring to the team Strong experience with automation frameworks (Playwright/Cypress preferred) Proficiency in JavaScript/TypeScript Foundation knowledge in ISTQB or equivalent Experience integrating automated tests into CI/CD pipelines Knowledge of testing methodologies (TDD/BDD) Passion for quality and continuous improvement Strong problem-solving and More ❯

build automation frameworks, work closely with developers to integrate testing into CI/CD, and champion quality engineering across the product lifecycle. With tools like Playwright, Cypress, and modern JavaScript/TypeScript frameworks, this role is perfect for someone with strong technical skills who wants to own the test automation strategy. Day-to-day responsibilities Design, build, and maintain robust … automation frameworks using Playwright/Cypress Develop automated tests in TypeScript/JavaScript Collaborate with developers to embed testing within CI/CD pipelines Perform functional, regression, and end-to-end testing Ensure tests are reliable, scalable, and provide fast feedback Track and report quality metrics to stakeholders Contribute to defining quality standards and best practices across the team Investigate … and resolve test failures, ensuring stability of releases What you bring to the team Strong experience with automation frameworks (Playwright/Cypress preferred) Proficiency in JavaScript/TypeScript Foundation knowledge in ISTQB or equivalent Experience integrating automated tests into CI/CD pipelines Knowledge of testing methodologies (TDD/BDD) Passion for quality and continuous improvement Strong problem-solving and More ❯

Description Required Qualifications: •Web application development •Node JS experience •Familiarity with VueJS desired, but not required. •Experience and familiarity in working with data in JavaScript Object Notation (JSON) •Familiarity with MongoDB or other document-based databases •Familiarity with Docker, containerized applications Preferred Qualifications: •Self-motivated, eager to learn •Experience with application development in JavaScript •Familiarity with the Linux operating system More ❯

Integration Engineer – (Healthcare, HL7, FHIR, Cloverleaf, APIs, Java, Python, JavaScript) – Contract – Remote Charles Simon Associates are exclusively recruiting for an Integration Engineer on an initial 3-month contract with the potential to extend. Location: Remote Day Rate: £450–£550 per day Inside IR35 Start Date: Ideally W/C 29th September Role Overview: We are looking for a skilled Integration … Strong knowledge of HL7 v2.x, HL7 v3, and FHIR interoperability standards. Hands-on experience with integration engines such as Mirth Connect, Rhapsody, Cloverleaf, or InterSystems Ensemble. Proficiency in Java, JavaScript, Python, or C#/.NET for scripting and interface development. Experience designing and consuming REST/SOAP APIs (JSON, XML). Solid understanding of healthcare workflows and clinical systems (Epic … . Strong SQL/database skills for data transformation and troubleshooting. Familiarity with healthcare data security protocols and compliance frameworks. Integration Engineer – (Healthcare, HL7, FHIR, Cloverleaf, APIs, Java, Python, JavaScript) – Contract – Remote More ❯

Integration Engineer – (Healthcare, HL7, FHIR, Cloverleaf, APIs, Java, Python, JavaScript) – Contract – Remote Charles Simon Associates are exclusively recruiting for an Integration Engineer on an initial 3-month contract with the potential to extend. Location: Remote Day Rate: £450–£550 per day Inside IR35 Start Date: Ideally W/C 29th September Role Overview: We are looking for a skilled Integration … Strong knowledge of HL7 v2.x, HL7 v3, and FHIR interoperability standards. Hands-on experience with integration engines such as Mirth Connect, Rhapsody, Cloverleaf, or InterSystems Ensemble. Proficiency in Java, JavaScript, Python, or C#/.NET for scripting and interface development. Experience designing and consuming REST/SOAP APIs (JSON, XML). Solid understanding of healthcare workflows and clinical systems (Epic … . Strong SQL/database skills for data transformation and troubleshooting. Familiarity with healthcare data security protocols and compliance frameworks. Integration Engineer – (Healthcare, HL7, FHIR, Cloverleaf, APIs, Java, Python, JavaScript) – Contract – Remote More ❯

Integration Engineer – (Healthcare, HL7, FHIR, Cloverleaf, APIs, Java, Python, JavaScript) – Contract – Remote Charles Simon Associates are exclusively recruiting for an Integration Engineer on an initial 3-month contract with the potential to extend. Location: Remote Day Rate: £450–£550 per day Inside IR35 Start Date: Ideally W/C 29th September Role Overview: We are looking for a skilled Integration … Strong knowledge of HL7 v2.x, HL7 v3, and FHIR interoperability standards. Hands-on experience with integration engines such as Mirth Connect, Rhapsody, Cloverleaf, or InterSystems Ensemble. Proficiency in Java, JavaScript, Python, or C#/.NET for scripting and interface development. Experience designing and consuming REST/SOAP APIs (JSON, XML). Solid understanding of healthcare workflows and clinical systems (Epic … . Strong SQL/database skills for data transformation and troubleshooting. Familiarity with healthcare data security protocols and compliance frameworks. Integration Engineer – (Healthcare, HL7, FHIR, Cloverleaf, APIs, Java, Python, JavaScript) – Contract – Remote More ❯

Integration Engineer – (Healthcare, HL7, FHIR, Cloverleaf, APIs, Java, Python, JavaScript) – Contract – Remote Charles Simon Associates are exclusively recruiting for an Integration Engineer on an initial 3-month contract with the potential to extend. Location: Remote Day Rate: £450–£550 per day Inside IR35 Start Date: Ideally W/C 29th September Role Overview: We are looking for a skilled Integration … Strong knowledge of HL7 v2.x, HL7 v3, and FHIR interoperability standards. Hands-on experience with integration engines such as Mirth Connect, Rhapsody, Cloverleaf, or InterSystems Ensemble. Proficiency in Java, JavaScript, Python, or C#/.NET for scripting and interface development. Experience designing and consuming REST/SOAP APIs (JSON, XML). Solid understanding of healthcare workflows and clinical systems (Epic … . Strong SQL/database skills for data transformation and troubleshooting. Familiarity with healthcare data security protocols and compliance frameworks. Integration Engineer – (Healthcare, HL7, FHIR, Cloverleaf, APIs, Java, Python, JavaScript) – Contract – Remote More ❯

Dynamics 365 and Power Platform Developer Javascript, C#, .NET Remote (must be UK based and eligible for SC Clearance) No sponsorship can be offered About the Role We are seeking an experienced Dynamics 365 Customer Engagement (CE) Developer to join a growing digital transformation team. This is a hands-on technical role where you will implement, configure, and extend Dynamics … and solution architecture in a collaborative, innovative environment. Key Responsibilities Implement and configure D365 CE modules, including entities, forms, views, workflows, and business rules. Develop custom plugins, workflows, and JavaScript to extend D365 CE functionality. Build and maintain Power Automate flows , Power Apps, and Power Pages solutions. Integrate D365 CE with external systems using Azure Logic Apps, APIs, and other … with cross-functional teams to deliver high-quality solutions. Skills & Experience Proven hands-on experience with Dynamics 365 CE/D365/Dynamics CRM . Strong coding skills: C#, JavaScript, custom plugins, Web API, SDK . Experience with Power Platform : Power Automate, Power Apps, Power Pages. Knowledge of integrations with Azure services, SSIS, and SQL Server. Understanding of Dynamics More ❯

Dynamics 365 and Power Platform Developer Javascript, C#, .NET Remote (must be UK based and eligible for SC Clearance) No sponsorship can be offered About the Role We are seeking an experienced Dynamics 365 Customer Engagement (CE) Developer to join a growing digital transformation team. This is a hands-on technical role where you will implement, configure, and extend Dynamics … and solution architecture in a collaborative, innovative environment. Key Responsibilities Implement and configure D365 CE modules, including entities, forms, views, workflows, and business rules. Develop custom plugins, workflows, and JavaScript to extend D365 CE functionality. Build and maintain Power Automate flows , Power Apps, and Power Pages solutions. Integrate D365 CE with external systems using Azure Logic Apps, APIs, and other … with cross-functional teams to deliver high-quality solutions. Skills & Experience Proven hands-on experience with Dynamics 365 CE/D365/Dynamics CRM . Strong coding skills: C#, JavaScript, custom plugins, Web API, SDK . Experience with Power Platform : Power Automate, Power Apps, Power Pages. Knowledge of integrations with Azure services, SSIS, and SQL Server. Understanding of Dynamics More ❯

Senior/Lead QA Engineer - Middlesbrough Automation Testing/JavaScript/Cypress/SQL/Jira Hybrid Remote in Middlesbrough - 1 day a month in the office. Salary up to £55k. 5 years + experience needed Interviews being held ASAP. WHO ARE WE? We are a Software House working on a variety of projects covering both hospitality and tech for … have excellent communication skills and will enjoy voicing their ideas! WE NEED YOU TO HAVE... Experience writing Automation tests. Previous experience in a Senior role. Strong working knowledge of JavaScript & Cypress. Experience with Functional, Regression, UAT and End to End Testing. Working knowledge of project management tooling such as JIRA. The ability to drive quality. Strong written and verbal communication … give express consent for us to process and submit (subject to required skills) your application to our client in conjunction with this vacancy only. KEY SKILLS Automation Testing/JavaScript/Cypress/SQL/Agile Call Settings Override To From Record Yes No Always use these settings More ❯

Senior/Lead QA Engineer - Middlesbrough Automation Testing/JavaScript/Cypress/SQL/Jira Hybrid Remote in Middlesbrough - 1 day a month in the office. Salary up to £55k. 5 years + experience needed Interviews being held ASAP. WHO ARE WE? We are a Software House working on a variety of projects covering both hospitality and tech for … have excellent communication skills and will enjoy voicing their ideas! WE NEED YOU TO HAVE Experience writing Automation tests. Previous experience in a Senior role. Strong working knowledge of JavaScript & Cypress. Experience with Functional, Regression, UAT and End to End Testing. Working knowledge of project management tooling such as JIRA. The ability to drive quality. Strong written and verbal communication … give express consent for us to process and submit (subject to required skills) your application to our client in conjunction with this vacancy only. KEY SKILLS Automation Testing/JavaScript/Cypress/SQL/Agile Call Settings Override To From Record Yes No Always use these settings More ❯

in front end development in a professional environment Knowledge of advanced Wordpress templating techniques, ideally including using Timber/Twig templating, and Advanced Custom Fields Ability to create vanilla javascript modules from scratch with standards complaint ES 2016 syntax Knowledge of one or more modern Javascript frameworks such as React or NextJS Experience creating CSS styles from scratch, using modular … array mapping E-commerce experience, ideally using Shopify or expanding Wordpress sites with WooCommerce Knowledge of different types of task runners and techniques for concatenating and minifying Stylesheets and Javascript A strong sense of design, functionality and user experience Excellent package on offer More ❯

ServiceNow applications and solutions. Customize and configure ServiceNow modules, including ITAM (SAM, HAM), CSM, HRSD, and ITSM. Develop custom applications, workflows, and integrations using ServiceNow scripting languages such as JavaScript, HTML, and CSS. Perform system maintenance, user administration, and configuration management. Ensure platform performance, security, and compliance with organizational standards. Collaborate with cross-functional teams to gather requirements and deliver … CAD) certification. One or more of the ITSM implementation, HRSD, ITAM (SAM or HAM), or CSM certifications are preferred. Strong knowledge of ServiceNow platform capabilities and architecture. Proficiency in JavaScript, HTML, CSS, and other relevant scripting languages. Excellent problem-solving skills and attention to detail. Strong communication and interpersonal skills. U.S. citizenship is required. Must possess a public trust clearance. More ❯

managers, and ops to deliver great experiences for our users and keep our apps running smoothly. Experience required: Commercial experience with any modern programming language Understanding of MVC or JavaScript frameworks Willingness to learn and apply: Accessibility best practices Testing frameworks Software design principles Git or other source control Tech stack includes: PHP, Slim Framework, JavaScript, React, and MySQL — but More ❯

managers, and ops to deliver great experiences for our users and keep our apps running smoothly. Experience required: Commercial experience with any modern programming language Understanding of MVC or JavaScript frameworks Willingness to learn and apply: Accessibility best practices Testing frameworks Software design principles Git or other source control Tech stack includes: PHP, Slim Framework, JavaScript, React, and MySQL — but More ❯

IT operational environment. 3 years of experience building and implementing solutions using developer tools, such as SharePoint Developer, Infopath, Visual Studio, or similar software. Demonstrated experience coding HTML with JavaScript, and utilizing JavaScript libraries, such as JQuery. Demonstrated experience creating technical documentation and training materials for end users. Shall meet the minimum credential requirements for a Cyber IT/Cybersecurity … IT operational environment. 3 years of experience building and implementing solutions using developer tools, such as SharePoint Developer, Infopath, Visual Studio, or similar software. Demonstrated experience coding HTML with JavaScript, and utilizing JavaScript libraries, such as JQuery. Demonstrated experience creating technical documentation and training materials for end users. Shall meet the minimum credential requirements for a Cyber IT/Cybersecurity More ❯

the user experience is good and the design is slick. To be successful it is likely that you will have: Excellent front end web skills across HTML, CSS and Javascript A good eye for design and user experience Knowledge of modern JavaScript frameworks (vue, react etc) An understanding of how the front end interacts with back-end frameworks such as More ❯

role you will be responsible for: Developing software for cyber security and signal/data/image processing applications Building solutions using C/C++, Java, HTML, Typescript/JavaScript Training customers on how to use developed software Collaborating with cross-functional teams to deliver high-quality solutions Requirements: Excellent undergraduate degree or PhD in a numerate discipline Experienced in … software development – C/C++, Java, HTML or JavaScript Self-motivated and capable of working independently Excellent verbal and written communication skills Strong interest in software development (especially C/C++) Unconditional right to live and work in the UK for an indefinite period without limitation Benefits/Renumeration: Excellent starting salary 10% employer pension contribution Income protection, life insurance More ❯

role you will be responsible for: Developing software for cyber security and signal/data/image processing applications Building solutions using C/C++, Java, HTML, Typescript/JavaScript Training customers on how to use developed software Collaborating with cross-functional teams to deliver high-quality solutions Requirements: Excellent undergraduate degree or PhD in a numerate discipline Experienced in … software development – C/C++, Java, HTML or JavaScript Self-motivated and capable of working independently Excellent verbal and written communication skills Strong interest in software development (especially C/C++) Unconditional right to live and work in the UK for an indefinite period without limitation Benefits/Renumeration: Excellent starting salary 10% employer pension contribution Income protection, life insurance More ❯

only Core Technical Skills: React Native & Expo: Proficient with React Native and Expo open source modules (bare workflow) Strong React fundamentals: hooks, context, state management React Navigation, app routing JavaScript & TypeScript Advanced JavaScript (ES6+) and TypeScript Type safety and maintainability for large-scale projects Native Platform Integration Swift (iOS) and Kotlin (Android) for custom native modules Native module integration in More ❯

Job Title: Front End Developer Location: Hertfordshire (1 day per week) Salary: £55,000 Tech: React, JavaScript, HTML, CSS, TypeScript An exciting opportunity has opened up with a fast-growing tech company operating in the HR space. They're working on a SaaS platform used by global clients across several sectors like education and non-profit, they’re scaling rapidly … product managers, and customer success teams Champion frontend best practices and explore AI tools to enhance development workflows Requirements: 5+ years’ experience in frontend development Strong proficiency in React, JavaScript, TypeScript, HTML, and CSS Experience integrating with APIs and working in cross-functional teams Benefits: Up to £55k salary 25 days holiday plus bank holidays Bonus scheme Supportive team culture More ❯

This could be the opportunity for you! The Position As a Web Developer, you’ll take ownership of building and maintaining dynamic web applications, working primarily with PHP, MySQL, JavaScript, HTML, and CSS. You’ll play a key role in delivering secure, scalable, and high-performance solutions, collaborating closely with designers, project managers, and fellow developers to bring projects to … challenges. This role is based near Southend-on-Sea in Essex, and requires on-site working. What’s Required? The ideal candidate will bring: Strong experience with PHP, MySQL, JavaScript, HTML, and CSS Background working with the LAMP stack Knowledge of frameworks such as Laravel and React Excellent problem-solving skills, attention to detail, and a team-oriented mindset Interested More ❯

What You'll Do Framework front-end experiments using HTML, JavaScript, and CSS for the Spotify website. Deploy experiments using our in-house testing tool or a third-party tool. Work across a diverse tech stack including React, PHP, and Next.js. Develop bold and tactical experiment hypotheses based on data and research insights. Focus on driving key performance indicators (KPIs … and with marketing and business stakeholders for campaigns or specific traffic sources. Who You Are 2+ years of experience coding with front-end technologies required to run experiments, including JavaScript, CSS, HTML Experience in conversion rate optimization, A/B testing and master A/B test principles and methodologies Experience working with JavaScript frameworks such as React, Angular is More ❯

custom Shopify builds and app integrations, building backend services and scalable logic to power modern commerce experiences. This role is best suited for someone with hands-on experience in JavaScript-based development (particularly with Node.js) who is looking to deepen their expertise within the Shopify ecosystem. We are open to candidates with experience in similar backend languages, provided you can … demonstrate transferable skills and a willingness to work primarily in JavaScript/TypeScript environments going forward. Key Responsibilities Develop and maintain backend services and APIs using Node.js (with frameworks such as Remix, Express, or similar). Contribute to the design of scalable, maintainable backend systems that integrate seamlessly with Shopify. Collaborate with frontend developers to deliver performant, custom Shopify experiences. … Troubleshoot and resolve issues related to backend performance, integrations, and data handling. Requirements 1–3 years of professional experience in backend development. Proficient in JavaScript/TypeScript (or in another backend language such as PHP, with a willingness to transition). Familiarity with modern backend frameworks like Remix, Express, or similar. Solid understanding of API patterns, particularly RESTful and GraphQL More ❯

custom Shopify builds and app integrations, building backend services and scalable logic to power modern commerce experiences. This role is best suited for someone with hands-on experience in JavaScript-based development (particularly with Node.js) who is looking to deepen their expertise within the Shopify ecosystem. We are open to candidates with experience in similar backend languages, provided you can … demonstrate transferable skills and a willingness to work primarily in JavaScript/TypeScript environments going forward. Key Responsibilities Develop and maintain backend services and APIs using Node.js (with frameworks such as Remix, Express, or similar). Contribute to the design of scalable, maintainable backend systems that integrate seamlessly with Shopify. Collaborate with frontend developers to deliver performant, custom Shopify experiences. … Troubleshoot and resolve issues related to backend performance, integrations, and data handling. Requirements 1–3 years of professional experience in backend development. Proficient in JavaScript/TypeScript (or in another backend language such as PHP, with a willingness to transition). Familiarity with modern backend frameworks like Remix, Express, or similar. Solid understanding of API patterns, particularly RESTful and GraphQL More ❯