1 to 25 of 60 Contract JavaScript Jobs in London

test automation (API testing, UI testing [cucumber, nightwatch]) Nice to have skills: AWS Knowledge of Open Source BPMN workflow engines (Camunda, Activiti or Flowable) Experience on a front-end javascript framework such as react, angular or vue.js RedHat OpenShift for container orchestration Knowledge of NCSCs 14 cloud security principles. SC Clearance: my client works with UK Central Government departments on More ❯

Apply security and performance best practices throughout development. Essential Skills & Experience Experience in government or GDS-aligned projects. 5+ years’ experience in large-scale software engineering. Strong in TypeScript, JavaScript, Express/Fastify, and AWS. Expertise in Terraform, IaC, and microservice architectures. Hands-on experience with CI/CD, Docker, and automated testing. Strong problem-solving and communication skills. More ❯

D, implementation to automation. WE NEED THE SENIOR SOFTWARE ENGINEER TO HAVE.... Current enhanced DV clearance Experience with at least one of the following: Java, Python, C++, C#, .NET, JavaScript, React Experience mentoring juniors or leading teams is nice to have but not essential Experience/Knowledge of automation IT WOULD BE NICE FOR THE SENIOR SOFTWARE ENGINEER TO HAVE.... More ❯

discussions around dashboards, visualisation, and real-time feedback loops What You’ll Bring: 5+ years of hands-on experience in front-end engineering Strong expertise in React.js and modern JavaScript fundamentals Experience working with Python services or frameworks for back-end integration Solid understanding of REST APIs, microservices, and contemporary web architecture Experience in enterprise-grade or engineering tools environments More ❯

in solution design, quality assurance, and delivery. Provide technical guidance and oversight across development teams. Contribute to hands-on solution definition using modern technologies such as Java, C#, or JavaScript . Operate within agile frameworks (Scrum, SAFe) to ensure iterative, value-driven delivery. Apply experience with SharePoint or Electronic Document Management Systems (EDMS) to support secure integration and delivery. Leverage More ❯

examples. Working closely with internal teams to deliver a scalable, compliant, and well-documented solution. Writing clean, well-structured code using C#/.NET Core (with possible TypeScript/JavaScript extensions). What We’re Looking For: Strong background in Microsoft Azure , including API Management , Azure AD , and App Services . Experience with Microsoft Teams app development or Microsoft More ❯

Apps with a Microsoft Dataverse data store. Key skills & experience: Solid experience using .Net to develop web applications Proficiency developing both Model-Driven Apps and Canvas apps using C#, JavaScript, and Power Fx. Experience with Microsoft Dataverse Experience with Azure services such as Functions and Service Bus Familiar with solution and Web App deployments via pipelines Experience with Microsoft Dataverse More ❯

Apps with a Microsoft Dataverse data store. Key skills & experience: Solid experience using .Net to develop web applications Proficiency developing both Model-Driven Apps and Canvas apps using C#, JavaScript, and Power Fx. Experience with Microsoft Dataverse Experience with Azure services such as Functions and Service Bus Familiar with solution and Web App deployments via pipelines Experience with Microsoft Dataverse More ❯

equivalent qualification/knowledge gained through experience. Knowledge of Software Developing Tools and Concepts at Level 3 and 4. Knowledge and application of the programme languages C#, HTML5, CSS3, JavaScript, SQL, Python, Java, PHP, Mobile app design & Development. Creativity and flexibility to develop and enhance teaching materials in order to engage learners and respond to learner interests. This is an More ❯

administration, or consulting roles. - Strong proficiency in SharePoint Online, SharePoint 2016/2019, and Office 365. - Expertise in SharePoint Framework (SPFx), PowerShell, REST APIs, and SharePoint Designer. - Proficiency in JavaScript, C#, HTML/CSS, and SQL Server for custom development and integration. - Experience with document management best practises, including metadata tagging, version control, and retention policies. - Familiarity with AI integration More ❯

Developer Specialist At least one AWS Foundation-level certification At least one AWS Associate-level certification Experience building within the Amazon Connect console. Strong programming skills in Python or JavaScript . Advanced experience with infrastructure-as-code (CDK or Terraform). Experience designing integration patterns with external systems. CI/CD pipeline implementation for contact centre solutions. Knowledge of performance More ❯

contract role - 3 months initial We're looking for a skilled contract Software Engineer with Security Clearance working Inside Ir35. London based - 2/3 days onsite Essential Skills: Javascript React Typescript Node for application development More ❯

contract role - 3 months initial We're looking for a skilled contract Software Engineer with Security Clearance working Inside Ir35. London based - 2/3 days onsite Essential Skills: Javascript React Typescript Node for application development More ❯

Ability to develop and maintain mobile apps across iOS and Android platforms. Web3 (Preferred): Familiarity with blockchain, smart contracts, and decentralised applications is a plus. Strong proficiency in modern JavaScript/TypeScript, component-based architecture, and responsive design. Experience in CI/CD pipelines, testing practices, and rapid iteration workflows. Candidate Profile: Comfortable in fast-moving, scale-up style environments. More ❯

contract £425 - £475 per day Outside IR35 London/Hybrid - 2x days a week in London Design and develop automated testing frameworks and strategies with Selenium and Playwright using Javascript/Typescript. Create and maintain test scripts utilising WebDriver, Selenium, Gherkin, and Cucumber Performance testing using JMeter Write clear and concise test cases and scenarios using JSON data structures to More ❯

but not essential Experience as a Cyber Security Engineer, Cyber Security Analyst, or a Network Engineer with an interest in becoming a Cyber Security Engineer. Experience with Terraform, Python, Javascript/Node.js, PowerShell or Bash Knowledge of infrastructure and application monitoring, such as Icinga or Elastic Stack. Network Security certifications (especially Cloud centric) would be advantageous. Proven ability to design More ❯

DATA ENGINEER TO HAVE Proven experience building and deploying applications using Palantir Foundry Strong software/data engineering background - Computer Science, Physics, Maths, Data Science. Proficiency in Python and JavaScript/TypeScript Experience solving technical problems involving cloud, infrastructure, data pipelines, or full-stack apps Ability to design and manage Ontologies and build applications using Foundry tools like Workshop Strong More ❯

DATA ENGINEER TO HAVE... Proven experience building and deploying applications using Palantir Foundry Strong software/data engineering background - Computer Science, Physics, Maths, Data Science. Proficiency in Python and JavaScript/TypeScript Experience solving technical problems involving cloud, infrastructure, data pipelines, or full-stack apps Ability to design and manage Ontologies and build applications using Foundry tools like Workshop Strong More ❯

Skills & Qualifications: 8+ years of experience in ServiceNow platform architecture and development. Minimum 2 years of hands-on experience architecting solutions in S2P and SOM modules. Strong command of JavaScript, Flow Designer, Script Includes, Business Rules, and UI Actions. Expertise in Integration Hub, MID Servers, and external system integrations. Deep understanding of ITSM, CSM, Procurement, and Finance domain processes. Certifications More ❯

telecommunications industry. Required Skills/Experience The ideal candidate will have the following: Strong experience in mobile app testing (Android & iOS). Hands-on experience with WebdriverIO (WDIO) and JavaScript or Typescript for mobile automation. Good Experience with Appium Experience with CI/CD pipelines (GitLab preferred). Familiarity with LambdaTest, Xray, and BlazeMeter. Good understanding of test data management More ❯

App Test Automation Engineer - hybrid (2 days in London) - £318 INSIDE IR35 Experience Strong experience in mobile app testing (Android & iOS). Hands-on experience with WebdriverIO (WDIO) and JavaScript or Typescript for mobile automation. Good Experience with Appium or similar automation frameworks. Experience with CI/CD pipelines (GitLab preferred). Familiarity with LambdaTest, Xray, and BlazeMeter. Good understanding More ❯

developers to identify and resolve potential issues early Designing detailed test plans, user scenarios and validation procedures Managing and configuring test environments and tools Executing manual and automated testing (JavaScript/TypeScript) Troubleshooting and validating new software releases, including end-user documentation Leading automation best practices and mentoring others on quality standards What You'll Bring: Experience in QA and More ❯

to ensure smooth delivery. Key Skills & Experience 5+ years' experience in QA or software support. Strong knowledge of Agile methodologies and the software development lifecycle. Experience with automated testing (JavaScript/TypeScript), Playwright, and source control tools. Excellent analytical, communication, and problem-solving skills. ISTQB certification, performance testing, and client support experience are advantageous. Everybody is Welcome Diversity and Inclusion More ❯

to ensure smooth delivery. Key Skills & Experience 5+ years' experience in QA or software support. Strong knowledge of Agile methodologies and the software development lifecycle. Experience with automated testing (JavaScript/TypeScript), Playwright, and source control tools. Excellent analytical, communication, and problem-solving skills. ISTQB certification, performance testing, and client support experience are advantageous. Everybody is Welcome Diversity and Inclusion More ❯

proficiency in Power Platform: Power Apps, Power Automate. Solid understanding of Azure services and integration Experience with Development Lifecycle (DLC) processes Advanced coding skills in C#, Visual Studio, and JavaScript Proven ability to manage stakeholders and work closely with business teams Next steps This client will only accept workers operating via an Umbrella/PAYE engagement model. If you are More ❯