76 to 100 of 213 JavaScript Jobs in London

Qualifications Expert proficiency in Python. Strong experience with other languages such as C++ and JavaScript is a plus. Deep understanding of software development best practices including version control (Git), testing, CI/CD, and containerization. Preferred Experience Experience as a Pipeline Engineer, Software Engineer, or in a similar role ...

stack engineering experience in SAAS and API development, with deep expertise in Node.js/NestJS, PostgreSQL optimization, and React applications. Proficiency in TypeScript/JavaScript, with a proven ability to drive architectural decisions. A pragmatic mindset: ability to determine when to ship code and when to refactor. #J-18808-Ljbffr ...

Limited is seeking a product-minded engineer to join their global trading and investment firm based in Greater London. This role involves building with JavaScript/TypeScript and Node.js, owning technical problems end-to-end, and improving large-scale systems. The ideal candidate will have strong Java Scripting skills, trading ...

Good knowledge of identity governance, provisioning, and access lifecycle management. Strong SQL and database development experience. Experience with scripting/automation (e.g. VB.NET, PowerShell, JavaScript, VBScript, or similar). Understanding of Active Directory, LDAP, Azure AD/Entra ID, and authentication systems. Familiarity with Agile delivery, SDLC, and Change Management ...

case management, SLAs, unified routing, and digital channels (chat, email, voice). Strong Dynamics 365 CE development skills - hands-on C#/.NET plugins, JavaScript, customisations, integrations, and solution delivery. Power Platform experience - Power Apps and Power Automate Azure integration capability - experience with Azure Functions, Logic Apps, APIs, and integration ...

integrations AWS services including Lambda, API Gateway, S3 and CloudWatch Experience with Amazon Lex, AI/ML services and LLM integrations TypeScript/modern JavaScript development CI/CD, DevOps and serverless architecture experience Ability to build scalable, resilient and secure contact centre solutions Strong stakeholder engagement and production support ...

environments Solid understanding of cloud infrastructure, ideally AWS and services such as Bedrock or serverless tooling Experience with modern web technologies including React and JavaScript or TypeScript Comfortable working in evolving codebases, with exposure to Ruby on Rails or Node.js beneficial A track record of seeing products through build, launch ...

contributing to or managing enterprise design systems. Familiarity with Storybook or similar component documentation tools. Basic understanding of frontend technologies including HTML, CSS, and JavaScript frameworks. Experience conducting usability testing or user research. NHS experience would be useful but is not essential. Previous experience working in regulated industries. What Success ...

Succeed: Strong ServiceNow development experience Hands-on development experience on the Service Portal Strong technical background using web technologies (specifically HTML, AngularJS, Bootstrap, CSS, JavaScript, JSON, HTTP, REST/SOAP) ServiceNow integration experience ServiceNow Customer Service Management experience desirable (CIS-CSM certification ideal) ServiceNow Certified Application Developer (CAD) Working within ...

across 100 countries, and has a reach of 600 million users, is recruiting a Full Stack Engineer with hands-on development capabilities in Python, JavaScript/TypeScript and ML/Gen AI tooling within AWS. To be successful in this project, the chosen engineer must have recent project experience developing ...

engineering team, including cross‐functional collaboration and ownership of architectural decisions. 5+ years of backend or full‐stack engineering experience, with strong TypeScript/JavaScript and Node.js skills. Experience designing versioned APIs (REST/OpenAPI and/or GraphQL with schema governance). Experience working in platform or infrastructure engineering ...

energised by seeing your work impact 30,000+ organisations globally, not just internal stakeholders. You are resilient: legacy stacks (MS-SQL, C#, JavaScript, ongoing React migration) do not scare you — they motivate you. You are excited to join the core platform Squad’s, long-standing mission to standardise language, data ...

solutions. Requirements: The ideal candidate will have several years' experience in ServiceNow design and development preferably in a consulting environment. Scripting skills such as JavaScript, HTML and XHTML, XML, CSS, AJAX, AngularJS highly advantageous An understanding of Service Management concepts, delivery assurance principals and procedures. A high level of knowledge ...

Automate, Power BI, and Power Virtual Agents. Experience with Microsoft Dataverse, SharePoint, Dynamics 365, and Azure. Knowledge of scripting and programming languages such as JavaScript, Power FX, C#, and SQL is a plus. Experience integrating external data sources (e.g., SQL databases, Excel, APIs). Understanding of security and governance ...

Build a working understanding of the UK energy market and wider commercial context What We’re Looking For Strong frontend fundamentals across HTML, CSS, JavaScript, and a modern framework, ideally React A track record of shipping customer-facing products and being able to demonstrate their impact Strong product instinct, with ...

engage and influence technical and non-technical stakeholders. A passion for technology and testing, staying ahead of trends in areas such as continuous delivery, JavaScript-based testing tools, microservices, containerization, and DevOps practices. Exceptional understanding of modern testing techniques, tools, and technologies. Whats in It for You? At Scale Factory ...

experience in a front office technical/quant role within investment banking Proficiency in programming preferably C++/Python/kdb/java/javascript and in working with standard Software Development Lifecycle (SDLC) tools in a collaborative environment (git/bitbucket/JIRA etc.) Experience working with data, both ...

modern cloud data platforms (Snowflake, Databricks, BigQuery, Redshift) and data ingestion patterns (batch, streaming, CDC). Hands‐On Development – Proficiency in programming (e.g., JavaScript, Python, SQL, R) and data frameworks like pandas or Jupyter. Excellent Communication – Strong presentation skills; adept at explaining complex ideas and guiding stakeholders toward impactful solutions. ...

using React aligned with latest UI framework practices and guidelines. Strong experience of API Development and its ecosystems. Hands‐on working experience with React, JavaScript, Java/Spring/Spring Cloud/Spring Data JPA/Spring Boot Microservices. Should have troubleshooting skills using debuggers, logs, etc. Strong understanding … test‐driven development using Jest, Cypress, JavaScript, JUnit, Mockito. Experience with public clouds like AWS, GCP will be added advantage. Experience with OpenShift, Docker, and Kubernetes. Understanding of build and deployment tools like Jenkins, Tekton, UDeploy, Harness, NPM, Maven, Gradle. Implement unit testing and TDD to ensure software quality ...

Incident, Change, Problem, Service Catalog) Experience in ServiceNow development, customization, workflows, and integrations Strong experience in Python development and scripting Hands-on experience with JavaScript, REST APIs, and automation Experience with CMDB, reporting, and dashboards Knowledge of Agile and ITIL processes ITSM ITOMComplaints Management Problem Management Knowledge Management Responsibilities: Design ...

integration, or technical consulting (SaaS environment preferred). Experience with REST APIs, systems integration, and SQL. Proficiency in any mainstream programming language (Python, Java, JavaScript, C, etc.). Ability to explain technical concepts clearly to technical and non-technical stakeholders. Experience working directly with customers. Italian (pre-sales) or French ...

scale systems sustain-ably through mechanisms like automation. Looking for someone from a software development background Ideal Candidate: Very strong engineering skills in Java, JavaScript or Python Open Telemetry experience Must have Core Java/Python Must have experience as an SRE knowledge of Python Data Structures Strong knowledge ...

scale systems sustain-ably through mechanisms like automation. Looking for someone from a software development background Ideal Candidate: Very strong engineering skills in Java, JavaScript or Python Open Telemetry experience Must have Core Java/Python Must have experience as an SRE knowledge of Python Data Structures Strong knowledge ...

Boomi integration solutions end to end, including one or more of Salesforce, NetSuite, or Oracle EBS. Strong command of SOAP, REST, XML, JSON, and JavaScript/Groovy scripting. Experience defining standards and reusable frameworks that other developers build on. A pragmatic problem-solver who can explain technical trade-offs ...

write clean code, break down complex problems, and collaborate with product and engineering teams to ship outcomes. You are confident with NodeJS and modern JavaScript standards like ES6 and ES7, and you can work with ReactJS or VueJS when needed to support user flows. Nice to have but not essential ...