1 to 25 of 37 Contract JavaScript Jobs in London

backend and DevOps teams across the full delivery lifecycle Required Experience Strong experience in UI or Frontend Architecture within complex environments Expertise in React, JavaScript (ES6+), TypeScript, HTML5 and CSS3 Experience designing SPA or micro-frontend architectures Strong understanding of API integration (REST, API gateway patterns, BFF) Experience working ...

London) Overview SC Cleared freelancer needed with a frontend focus to build modern, scalable web applications, with some backend/API work. Tech & Skills JavaScript/TypeScript, React/Angular/Vue Node.js, REST/GraphQL APIs HTML, CSS, responsive & accessible design Testing (Jest/Cypress), CI/ ...

across the full lifecycle Hands-on expertise with Microsoft-based environments (e.g. Azure testing tools, AI platforms) Proficiency in one or more: Python, Java, JavaScript, SQL, or R Proven experience in: AI/Generative AI testing RAG (Retrieval-Augmented Generation) solution validation (e.g. RAGAS framework) CI/CD, DevOps ...

across the full lifecycle Hands-on expertise with Microsoft-based environments (e.g. Azure testing tools, AI platforms) Proficiency in one or more: Python, Java, JavaScript, SQL, or R Proven experience in: AI/Generative AI testing RAG (Retrieval-Augmented Generation) solution validation (e.g. RAGAS framework) CI/CD, DevOps ...

Sales Dataverse Power Platform Power Apps (Model-Driven Apps) Power Automate Customer Insights Sales Accelerator Strong hands-on development capability including: C# .NET JavaScript Plugins Custom Workflow Activities REST APIs Experience designing enterprise integrations using: Azure Functions Logic Apps Service Bus Azure Data Factory Azure Key Vault Strong stakeholder management ...

operations teams. What You'll Need We are looking for a mix of some or all of the following: Development: Experience with Java, Python, JavaScript, C++, or C#. Cloud & Containers: Cloud-native platforms (AWS, Azure, GCP) and Kubernetes/Helm. CI/CD & IaC: GitLab, Jenkins, Terraform, or Ansible. Data ...

platform. What You Bring Hands-on Code: At least 2+ years of professional software development experience (OOP). Tech Stack: Proficiency in Python and JavaScript, alongside modern frameworks (React, Angular, Vue, etc.). Cloud & Data: Proven experience deploying to AWS, GCP, or Azure, alongside a strong understanding of SQL/ ...

processes Troubleshoot and resolve complex technical issues Required Experience 8+ years' experience working with Microsoft Dynamics 365 Strong development experience with C#, .NET, and JavaScript or TypeScript Proven experience building plugins, workflows, and integrations Experience working across the full delivery lifecycle of Dynamics solutions Hands-on experience with Power Platform ...

Azure, GCP or VCF Release automation — ArgoCD, Flux Observability — Prometheus, Grafana, ELK IAM & secrets management — OAuth/OIDC, Keycloak, Vault Software development — Java, Python, JavaScript, C++ or C# Solid grounding in security principles — CIA, Least Privilege, Zero Trust Networking fundamentals — DNS, TCP/UDP, firewalls, VPNs Our Company Rubicon Consulting ...

Strong understanding of Salesforce development lifecycle (SDLC), including metadata API, packaging (Unlocked and Managed Packages), and environment strategies. Proficiency in scripting languages such as JavaScript (Node.js), Bash, or PowerShell for pipeline automation. Experience with Git version control, branching strategies, and code merging workflows. Knowledge of DevOps concepts such as continuous ...

Duration: 6 months Location: Once a month onsite in Sheffield, Manc, Leeds, NC, Birm (whichever is near) Start: ASAP INSIDE Essential Skills: HTML, CSS, JavaScript, TypeScript Node.js development experience required Unit Testing/TDD Browser-based testing tools such as Playwright or Selenium Accessibility testing and development (WCAG) Experience with ...

Schema Design & Data Modeling Data Ingestion (Batch & Streaming APIs) Identity Service & Real Time Customer Profile Adobe RTCDP and Adobe Journey Optimizer (AJO) SQL, JSON, JavaScript REST APIs and Web Services ETL/ELT and Data Integration Azure/AWS/GCP (Preferred) Git, CI/CD, Agile Methodologies Key Performance ...

experience developing within Microsoft Dynamics 365 CE/CRM Excellent knowledge of Dataverse and Power Platform technologies Experience developing in C#/.NET and JavaScript Strong understanding of APIs, integrations and data-driven applications Experience working with Azure integration technologies Knowledge of source control and CI/CD processes Ability ...

APIs SOAP Services Strong understanding of API design principles and documentation standards. ASP.NET MVC 5 ASP.NET Web API 2 Front-End Development Angular (v2+) JavaScript Data & Persistence Experience with ORM frameworks such as: Entity Framework NHibernate Dapper Database development and support experience with: Microsoft SQL Server (2008+ ...

APIs SOAP Services Strong understanding of API design principles and documentation standards. ASP.NET MVC 5 ASP.NET Web API 2 Front-End Development Angular (v2+) JavaScript Data & Persistence Experience with ORM frameworks such as: Entity Framework NHibernate Dapper Database development and support experience with: Microsoft SQL Server (2008+ ...

design principles and documentation standards. ASP.NET MVC 5 ASP.NET Web API 2 Front-End Development Angular (v2+) IBM MQ/MQ messaging JavaScript Why Join Us? Work on projects that make a difference in the financial sector. Collaborate with a talented team in a vibrant environment. Enjoy a competitive daily ...

days/week in office Duration - Initially 6 months Rate - £550-£650/day Inside IR35 via Umbrella Skills and Experience Required TypeScript or Javascript Next.js or React AWS Terraform Experience providing feedback to engineering teams via code review Exposure to a wide range of languages, frameworks, and cloud technologies ...

hands-on Boomi integration experience, including one or more of Salesforce, NetSuite, or Oracle EBS. Strong working knowledge of SOAP, REST, XML, JSON, and JavaScript/Groovy scripting. Proven ability to deliver in a fast-paced, evolving environment. A creative, pragmatic problem-solver with strong verbal and written communication skills. ...

TSOM, ITOM, ITAM, HRSD, CSM, GRC, SecOps). Proven expertise in ServiceNow integrations (REST, SOAP, APIs, MID Servers, etc.). Experience with ServiceNow scripting (JavaScript, Glide, Flow Designer) and ServiceNow data model. Knowledge of ITIL/ITSM processes and best practices. Experience designing and implementing CMDB and Discovery. Excellent problem ...

Professional, or equivalent certification. Experience with ServiceNow CSDM 3.0 or later. Experience with: Service Mapping Automated Test Framework (ATF) Vulnerability Management Scripting experience including JavaScript, Jelly, SQL, or similar technologies. Behavioural Competencies Analytical Thinking Attention to Detail Accountability and Ownership Effective Communication Critical Thinking Customer Focus Collaboration and Teamwork Adaptability ...

technical teams. Essential Skills: Extensive ServiceNow architecture experience. Strong ITSM knowledge plus at least two additional ServiceNow modules. CMDB and Discovery implementation experience. Strong JavaScript, Glide and Flow Designer knowledge. Excellent stakeholder management and communication skills. Desirable Skills: ServiceNow CSA, CIS, CAD or CTA certifications. Agile/Scrum experience. ...

various stakeholders across the council. Experience in Dynamics 365/Azure is desirable. Understanding of OAuth Experience of SQL Experience of Formulas, C# or Javascript Power Platform Functional Consultant PL-200 (desirable but Power Platform experience and passion are more important). ...

best practices. * Work closely with cross-functional teams to deliver high-quality software. Skills & Experience: * 3-7+ years commercial ServiceNow development experience. * Strong JavaScript development skills. * Experience with Service Portal or Employee Centre development. * Solid knowledge of Business Rules, Flow Designer, Client Scripts, UI Policies and Script Includes. * Experience ...

Applications Duration - 6 months with likely extension Rate - £416 p/d (inside IR35) Location - Hybrid/Canary Wharf Tech Stack C# WPF Winforms Javascript SQL Oracle Tasks Tasks range from understanding business requirements, designing application structures, business data analysis, programming WPF (Windows Presentation Foundation) applications in Visual C#.NET ...

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 ...