1 to 25 of 37 Contract JavaScript Jobs in London

work experience - Solid experience with REST APIs, Microservices Architecture, and messaging systems (Kafka/RabbitMQ). - Proficiency in Front End technologies: Angular/React, JavaScript/TypeScript, HTML5, CSS3. - Experience with relational databases such as Oracle, SQL Server, or PostgreSQL. - Good understanding of ORM frameworks like Hibernate/JPA. - Familiarity ...

absence of other senior engineering leaders. Experience operating within Agile and DevOps delivery models. Desirable Skills: Application & Integration Technologies C# .NET Entity Framework JavaScript React Vue.js Windows Presentation Foundation (WPF) REST APIs Microservices architecture AI & Data Technologies AWS SageMaker Large Language Model (LLM) integrations AI-assisted analytics solutions Python-based ...

Customer Service * Power Pages/Portals * Power Automate * Liquid Templating * XRM API for Model-Driven Apps * Microsoft Dynamics 365 Web API/OData * JavaScript * CSS * HTML * REST APIs * Azure services and operations * FetchXML Desirable experience/qualifications will include * Dynamics 365 experience * Azure development experience * Power Platform Functional Consultant ...

changes on test coverage Essential skills Test tools: Cucumber, Playwright and K6 Version control: GitHub and Azure DevOps Microsoft-stack coding: C#, Node.js, JavaScript or TypeScript SQL and relational databases Testing on .NET, SQL and microservices, both on-prem and in the cloud Proven experience as an automation test engineer ...

Qualifications -Stronghands onexperienceinJava(8/11/17)andSpringBoot,Kafka,SpringMVC,SpringSecurity. -StronginPythonworkexperience -SolidexperiencewithRESTAPIs,MicroservicesArchitecture,andmessagingsystems(Kafka/RabbitMQ). -Proficiencyinfrontendtechnologies:Angular/React,JavaScript/TypeScript,HTML5,CSS3. -ExperiencewithrelationaldatabasessuchasOracle,SQLServer,orPostgreSQL. -GoodunderstandingofORMframeworkslikeHibernate/JPA. -Familiaritywithbuildanddependencytools:Maven/Gradle. -ExperiencewithversioncontrolsystemssuchasGit. -Strongknowledgeofsoftwaredesignprinciples,datastructures,andmultithreading/concurrency. -Excellentanalytical,problem-solving,andcommunicationskills. -Experienceinfinancialservices ...

teams to deliver intelligent, production- ready applications at scale. Key Responsibilities Design, build, and maintain scalable front-end applications using React, python and modern JavaScript/TypeScript. Build front-end solutions that support high data throughput, performance optimisation, and responsiveness at scale. Collaborate on the deployment of applications to cloud ...

teams to deliver intelligent, production- ready applications at scale. Key Responsibilities Design, build, and maintain scalable front-end applications using React, python and modern JavaScript/TypeScript. * Build front-end solutions that support high data throughput, performance optimisation, and responsiveness at scale. * Collaborate on the deployment of applications to cloud ...

schema validation PostgreSQL database design, migrations, and query optimisation React and TypeScript Authentication and authorisation (SSO, JWT, RBAC) Automated testing using pytest and JavaScript testing frameworks Git/GitHub workflows, pull requests, and CI processes Secure coding practices and security remediation Hands-on experience with Claude Code and AI-assisted ...

Requirements Strong commercial experience in senior backend, platform or software engineering roles, with the ability to lead technical design and delivery. Advanced TypeScript, JavaScript and Node.js experience, particularly within microservices and distributed architectures. Strong hands-on AWS experience, designing and deploying scalable, cloud-native applications. Practical experience with Model Context ...

security hardening. Containerization: Hands-on experience with Docker and Kubernetes for container orchestration. Front-End Fundamentals: Exposure to client-side technologies such as JavaScript and Angular. Clearance: Active UK Security Check (SC) clearance is strictly required prior to onboarding. Randstad Technologies is acting as an Employment Business in relation ...

development skills Understanding of software design principles and development best practices Experience working within complex enterprise environments Experience working with Azure Desirable Experience with JavaScript Exposure to React Experience contributing to application modernisation programmes Knowledge of Azure cloud technologies Experience within Financial Services, Investment Banking or Capital Markets environments Personal ...

Required Skills Frontend React.js REST API troubleshooting JavaScript/TypeScript basics Backend Python FastAPI REST APIs Postman/Swagger Cloud AWS (EC2, Lambda, S3, CloudWatch, API Gateway, IAM) Support Incident & ticket management (ServiceNow/Jira) Log analysis and application troubleshooting Qualifications Bachelor's degree in Computer Science, IT, or related ...

configuring Microsoft Dynamics 365 Strong C#/.NET development experience Experience with Microsoft Azure and associated cloud technologies Experience building APIs and system integrations JavaScript/TypeScript experience Experience developing custom Dynamics functionality, plugins and workflows Understanding of CI/CD and modern software engineering practices Comfortable working across both ...

principles. Hands-on implementation experience with SAML 2.0, OAuth 2.0, OIDC, OpenAM/OpenIDM concepts, JWT, and REST APIs. Proficiency in Java and Scripting (JavaScript and/or Groovy); ability to build custom components and integrations. Experience with web/application security fundamentals: TLS/certificates, cookies, sessions, OWASP basics ...

Must Have - Backend: Strong Java/Python skills with Spring and Spring Boot - Frontend fundamentals: Strong HTML5, CSS3, and JavaScript (ES6+) - Modern frontend framework: Hands-on experience with React Js - Component architecture and state: Component-based design and state management (React Hooks, Redux, Context, or NgRx) - Responsive UI: Building responsive ...

scale web applications, with substantial hands-on responsibility rather than purely architectural oversight. Strong backend and database skills . Production experience with TypeScript/JavaScript and Node.js , API design, asynchronous programming, SQL and relational data modelling. Evidence of performance improvement. Practical experience profiling applications, diagnosing bottlenecks and reducing ...

with very likely extension Location - Hybrid/Canary Wharf - 3 days per week in a Canary Wharf office Tech Stack Copilot Powerapps Power platform Javascript Role Development and support of low code Business applications using Power platform, M365, C#, JavaScript. You will collaborate closely with business analysts, business users ...

optimisation: Ability to identify opportunities to improve development processes and contribute to implementing practical solutions. Core Tech stack: Python (django and ninja) Front-end - JavaScript, HTML, CCS Familiarity with AWS GitHub and GitHub actions Claude code use NB: Active SC required for assignment To apply, please submit latest ...

knowledge-grounded AI applications AI agents and agentic workflows Microsoft Fabric Power Platform Azure Functions/Logic Apps APIs and system integrations Python, C#, JavaScript/TypeScript or similar Microsoft Entra ID/cloud security Please click apply ...

platform optimisation. - Develop and maintain custom Dynamics 365 functionality, including: - C# Plugins - Custom APIs - Custom Workflow Activities - Power Apps Component Framework (PCF) Controls - JavaScript and TypeScript Web Resources - Power Apps - Power Automate Flows Required Knowledge and Experience : **Essential** - 3+ years of hands-on Microsoft Dynamics 365 and Dataverse development experience. … modelling. - Experience building integrations using: - Microsoft Dataverse Web APIs - Dynamics 365 Web APIs - REST APIs - OAuth and modern authentication mechanisms - Experience developing: - PCF Controls - JavaScript and TypeScript solutions - Power Apps - Power Automate - Custom Web Resources - Strong experience using Microsoft Visual Studio for Dynamics 365 development. - Experience using Visual Studio Code ...

platform optimisation. - Develop and maintain custom Dynamics 365 functionality, including: - C# Plugins - Custom APIs - Custom Workflow Activities - Power Apps Component Framework (PCF) Controls - JavaScript and TypeScript Web Resources - Power Apps - Power Automate Flows Required Knowledge and Experience : *Essential* - 3+ years of hands-on Microsoft Dynamics 365 and Dataverse development experience. … modelling. - Experience building integrations using: - Microsoft Dataverse Web APIs - Dynamics 365 Web APIs - REST APIs - OAuth and modern authentication mechanisms - Experience developing: - PCF Controls - JavaScript and TypeScript solutions - Power Apps - Power Automate - Custom Web Resources - Strong experience using Microsoft Visual Studio for Dynamics 365 development. - Experience using Visual Studio Code ...

standards. Essential Skills & Experience Strong commercial experience with SharePoint Server Subscription Edition development. Expertise in SharePoint customisation and development. Strong knowledge of C#, .NET, JavaScript and PowerShell . Experience working with SharePoint architecture, security and permissions. Ability to work effectively with both technical and non-technical stakeholders. Experience within enterprise ...

Pinecone or Chroma), and retrieval-augmented generation concepts. * Hands-on experience developing with Model Context Protocol (MCP) * Strong software development fundamentals in Python and JavaScript/Node.js with extensive experience building, connecting, and securing REST APIs. * Familiarity with context engineering, prompt architecture, and structured data formats (JSON, XML) used ...

deliver scalable, secure, and high-performing solutions in Azure environments. Key Responsibilities Design, develop, and maintain scalable full-stack applications using React, Python, JavaScript, and TypeScript Build responsive, high-performance front-end solutions capable of handling large data volumes Develop and integrate APIs, microservices, and distributed systems Deploy and manage … Drive performance optimisation, observability, scalability, and application reliability Required Skills & Experience Essential Extensive experience as a Senior Full Stack Developer Strong expertise in: React JavaScript/TypeScript Python Deep understanding of modern React development: Hooks State management Component architecture Performance optimisation Proven experience deploying applications to cloud environments, ideally Microsoft ...

correlation and noise reduction. Governance & Optimization: define SOMT governance, standards, and architectural guardrails. Technical Environment: ServiceNow, ITSM, SOMT, CMDB architecture, data modeling, ServiceNow scripting (JavaScript, Glide APIs), Network, server, storage, cloud, HLDs, LLDs + architecture diagrams. ...