401 to 425 of 750 ECMAScript Jobs in London

team to design, code and test their platform, while also working together with their customers and partners Key requirements: 2+ years’ experience working with JavaScript and React. Experience working with Python. Experience working with Django. AWS. Bonus if you have worked in start-ups before. If you’re a Junior ...

ServiceNow Developer (minimum 2–3 years). Strong knowledge of ServiceNow modules such as ITSM, CMDB, Incident, Problem, Change Management . Proficiency in JavaScript, Glide API, and ServiceNow scripting . Experience with ServiceNow integrations (REST/SOAP APIs). Understanding of ITIL processes. Excellent problem-solving and communication skills. Desirable ...

ServiceNow Developer (minimum 2–3 years). Strong knowledge of ServiceNow modules such as ITSM, CMDB, Incident, Problem, Change Management . Proficiency in JavaScript, Glide API, and ServiceNow scripting . Experience with ServiceNow integrations (REST/SOAP APIs). Understanding of ITIL processes. Excellent problem-solving and communication skills. Desirable ...

ones, while also collaborating with engineers, product, and design to deliver polished UI/UX. Key requirements: 5+ years of commercial frontend experience Strong JavaScript + CSS foundation Hands-on React experience Comfortable building API-driven applications If you’re a Senior Frontend Engineer looking for a new challenge, please ...

ones, while also collaborating with engineers, product, and design to deliver polished UI/UX. Key requirements: 5+ years of commercial frontend experience Strong JavaScript + CSS foundation Hands-on React experience Comfortable building API-driven applications If you’re a Senior Frontend Engineer looking for a new challenge, please ...

pipelines that form their data ingestion and modelling machine. Essential Skills: Must have signficant commercial experience with Node.JS Must have strong commercial experience with JavaScript ideally with ES6/7 features Also experience in Vue, Express or Sequelize Previous experience configuring, deploying, and monitoring applications and websites on AWS. ...

requirements. Required Skills & Experience Proven experience as a ServiceNow Developer , with a focus on GRC modules . Strong understanding of ServiceNow architecture and scripting (JavaScript, Glide API). Experience with ServiceNow integrations using REST/SOAP APIs. Knowledge of ITIL processes and risk/compliance frameworks. Ability to work ...

Outdoor clothing retailer 💻 Shopify, Liquid, JavaScript, HTML, CSS 🏡 Hybrid working with occasional London meet-ups 🎯 3 stage interview process 🏢 50 person strong team We’re hiring a Lead Shopify Web Developer to take ownership of a global, multi-region eCommerce setup. You’ll build and optimise multiple storefronts, ship ...

Outdoor clothing retailer 💻 Shopify, Liquid, JavaScript, HTML, CSS 🏡 Hybrid working with occasional London meet-ups 🎯 3 stage interview process 🏢 50 person strong team We’re hiring a Lead Shopify Web Developer to take ownership of a global, multi-region eCommerce setup. You’ll build and optimise multiple storefronts, ship ...

least 3 years development experience with Salesforce Marketing Cloud, alongside proficiency in relevant tech (e.g. SQL, AMPscript, SSJS, HTML, CSS, Einstein GPT and JavaScript). In return, you’ll receive a competitive salary and benefits package, plus the opportunity to work on exciting projects that shape the future of customer ...

least 3 years development experience with Salesforce Marketing Cloud, alongside proficiency in relevant tech (e.g. SQL, AMPscript, SSJS, HTML, CSS, Einstein GPT and JavaScript). In return, you’ll receive a competitive salary and benefits package, plus the opportunity to work on exciting projects that shape the future of customer ...

Challenging and improving engineering practices as the team scales YOUR SKILLS AND EXPERIENCE Strong GCP experience needed BigQuery + SQL knowledge Typescript/Javascript/Node.js ideal Python exposure Ideally agency or consultancy background Strong understanding of digital media data Confidence building solutions independently and rapidly BENEFITS Salary ...

Challenging and improving engineering practices as the team scales YOUR SKILLS AND EXPERIENCE Strong GCP experience needed BigQuery + SQL knowledge Typescript/Javascript/Node.js ideal Python exposure Ideally agency or consultancy background Strong understanding of digital media data Confidence building solutions independently and rapidly BENEFITS Salary ...

Technical Skills: Adobe Journey Optimizer (AJO) - High proficiency. Adobe Experience Platform (AEP) and Customer Journey Analytics (CJA). Adobe Launch for WebSDK implementation. Strong JavaScript skills; familiarity with HTML/CSS. Experience with REST APIs, JSON, and data integration. Preferred Skills: RDBMS/SQL for data handling. Knowledge of Adobe ...

will need: Extensive hands-on development experience with Python within Financial Services Strong background working with Pandas & NumPy Good experience with Django and Javascript Strong experience working within a risk environment Proficiency with Python libraries such as NumPy, Pandas, Paramiko, etc. What you'll get in return Initial 6-month ...

automation Explore opportunities with AI & advanced Salesforce tooling ✅ What you bring: Strong experience in Salesforce dev (declarative + programmatic) Proficiency in LWC, Apex, SOQL, JavaScript Experience with Salesforce CPQ and/or OmniStudio Integration experience: REST/SOAP APIs, Apex callouts, connected apps Comfortable in hybrid teams & business-focused delivery ...

automation Explore opportunities with AI & advanced Salesforce tooling ✅ What you bring: Strong experience in Salesforce dev (declarative + programmatic) Proficiency in LWC, Apex, SOQL, JavaScript Experience with Salesforce CPQ and/or OmniStudio Integration experience: REST/SOAP APIs, Apex callouts, connected apps Comfortable in hybrid teams & business-focused delivery ...

will need: Extensive hands-on development experience with Python within Financial Services Strong background working with Pandas & NumPy Good experience with Django and Javascript Strong experience working within a risk environment Proficiency with Python libraries such as NumPy, Pandas, Paramiko, etc. What you'll get in return Initial 6-month ...

Celery-based distributed task processing system • Reduce technical debt and simplify legacy components • Contribute to the introduction of modern browser-based experiences using JavaScript Software Developer (Python/Django) Essential Skills and Experience: • Strong commercial experience with Python and Django • Solid working knowledge of PostgreSQL • Experience with Celery or similar ...

have at least 5 years’ development experience with Salesforce Marketing Cloud, alongside proficiency in relevant tech (e.g. SQL, Data Modelling, AMPscript, SSJS, HTML, CSS, JavaScript). Integration expertise (with Sales/Service Cloud), implementation experience and a deep understanding of SFMC's data architecture and contact mappings are desirable. ...

have at least 5 years’ development experience with Salesforce Marketing Cloud, alongside proficiency in relevant tech (e.g. SQL, Data Modelling, AMPscript, SSJS, HTML, CSS, JavaScript). Integration expertise (with Sales/Service Cloud), implementation experience and a deep understanding of SFMC's data architecture and contact mappings are desirable. ...

team, you will also be responsible for establishing and implementing their testing strategy. Essential skills Strong backend API based testing/automation API Mocking Javascript/Typescript based automation testing experience (Playwright ideal but similar considered) Contributing to unit testing/experience with relevant tooling (Jest, Familiarity with risk based ...

team, you will also be responsible for establishing and implementing their testing strategy. Essential skills Strong backend API based testing/automation API Mocking Javascript/Typescript based automation testing experience (Playwright ideal but similar considered) Contributing to unit testing/experience with relevant tooling (Jest, Familiarity with risk based ...

have at least 5 years’ development experience with Salesforce Marketing Cloud, alongside proficiency in relevant tech (e.g. SQL, Data Modelling, AMPscript, SSJS, HTML, CSS, JavaScript). Integration expertise (with Sales/Service Cloud), implementation experience and a deep understanding of SFMC's data architecture and contact mappings are desirable. ...

attitude. Required: Practical experience using API testing tools such as Postman, Insomnia, REST Client, or similar Ability to write basic test scripts in Python, JavaScript, or Bash Solid understanding of methods, status codes, and request/response formats Experience working with OpenAPI/Swagger specifications Strong attention to detail ...