1 to 25 of 59 Permanent JavaScript Jobs in the City of London

application development (.NET Core, C#) or winforms/WPF (C#) development. Our client will provide you with training into: .NET 10.0, WPF, MVVM, Prism, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, ASP.NET Core Web API, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and Azure SQL. ...

such as Sitecore, Optimizely, Umbraco, Alterian, Immediacy, Ektron, Kentico, Sitefinity or dotnetnuke. Our client can provide you with industry recognised training in: .NET 10.0, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, ASP.NET Core Web API, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This ...

using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript). LLM experience: Practical experience with Large Language Models (LLMs) such as OpenAI, Anthropic, Mistral, or Llama, and tools like Ollama. Cloud Platforms: Proficiency ...

Senior Software Engineer Key Technologies: C#, .NET, React, JavaScript, Typescript, AWS, Docker City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Financial Services Vendor and they are looking for a Senior C#, .NET Software Engineer to join their growing team! This ...

application development. Use Node.js and related tools for effective backend development. Design and implement effective UIs with a focus on user experience, using TypeScript, JavaScript, and CSS. Integrate frontend and backend aspects of the application using RESTful APIs. Participate in continuous integration and deployment (CI/CD) pipelines. Ensure software ...

customising Dynamics 365 CE/CRM inc. Dataverse Experience working with both technical and business stakeholders to capture requirements Solid knowledge of C#, .NET, JavaScript, TypeScript, Liquid , and other relevant languages used in Dynamics development. Experience configuring and customising Dynamics 365 solutions. Strong background integrating Dynamics with external systems ...

teams. Dedication to understanding the business domain and translating product strategy into architecture and delivery plans. Corporate Actions domain experience strongly preferred. Experience with JavaScript/TypeScript and Angular for full-stack development contexts preferred. Expertise in Spring Framework, software architecture, and API/platform design preferred. Background in financial ...

enjoys solving complex problems and helping teams succeed. You likely bring: Strong development experience in PHP Experience with related technologies such as TypeScript, React, JavaScript, or Python Hands-on experience working with AWS and Infrastructure as Code (Terraform, CDK, or CloudFormation) Deep understanding of MySQL and relational database performance optimisation ...

migrating SharePoint 2016 on-premise environments to SharePoint SE and/or SharePoint Online. - Proven expertise in SharePoint Framework (SPFx) development. - Proficiency in TypeScript, JavaScript, React, HTML5, CSS3, and modern front-end development practices. - Strong experience integrating SharePoint solutions using RESTful APIs and Microsoft Graph. - Solid experience with C# ...

candidates from AWS or Azure backgrounds — GCP is where you'll operate. The must-haves are: Kubernetes (GKE) · Docker · Terraform · PHP (Symfony/Drupal) · JavaScript · Go · Cloud SQL/MySQL · Redis · Nginx · Cloud Load Balancing · Varnish · CDNs · Cloudflare Bonus: GCP, BigQuery, Apigee, Vertex AI About You Proven leadership of Platform ...

evolving well-structured RESTful APIs Designing and improving data models across relational (e.g. PostgreSQL) and NoSQL databases Working across the stack where needed, including JavaScript, modern HTML/CSS, and utility frameworks such as Tailwind Contributing to cloud-based infrastructure (e.g. Google Cloud), deployment pipelines and DevOps practices Debugging live ...

strong eye for frontend quality - you care about how things look and feel, not just whether they work Comfortable working with HTML, CSS, and JavaScript across a modern Rails frontend stack Familiarity with relational databases (PostgreSQL preferred) and writing efficient queries Comfortable building and consuming APIs as part of delivering ...

decisions, and engineering best practices. Write clean, well-tested, and well-documented code. Must‐Have Technical Skills Expert-level Node.js development experience (TypeScript/Javascript). Professional Golang development experience. Strong GraphQL experience, including schemas, resolvers, and high-volume queries. Deep knowledge of PostgreSQL, including performance tuning and relational design. ...

join a driven team where your work matters and your input is valued. Key Skills: Backend development (Python, Flask, FastAPI) Frontend development (React, JavaScript, TypeScript) Cloud and infrastructure experience (Terraform, GCP, AWS) Strong problem-solving skills and a pragmatic approach to building solutions Initiative and ownership of projects from start ...

Power Platform/Dynamics, REST, SOAP, and Web API integrations, Azure Integration Services, Azure DevOps, Azure Service Bus, Databricks, Jitterbit, SQL Server, C#, ASP.NET, JavaScript, XML Experience delivering engineering work within large IT change portfolios Strong understanding of SDLC, automation, DevOps, pipelines, and engineering best practice Ability to collaborate effectively ...

working closely with product and design teams while also contributing to API integrations where needed. They’re looking for someone who: Has strong React, JavaScript and TypeScript experience Has built modern frontend applications or product platforms Is comfortable working with APIs and backend services Enjoys problem-solving and thinking through ...

across the business to help modernise internal technology and improve operational performance. Technical Environment Experience with some of the following technologies would be beneficial: JavaScript frameworks such as React or Next.js Backend development with Node.js, C#, or similar Cloud platforms (AWS or equivalent) Building and maintaining API integrations and distributed ...

business scales toward Series A and beyond. Core requirements: 3 plus years of engineering experience Strong in React and comfortable across the full JavaScript and TypeScript stack Backend experience building REST APIs using NestJS or Express Or Python Experience with MongoDB or similar databases Evidence of building independently, for example ...

credibility across engineering teams. Deep expertise in Microsoft ecosystems, modern cloud architectures, and distributed systems. Strong knowledge of Web, Mobile, FE technologies such as JavaScript, React, Kotlin, .Net, Azure. Experience implementing CI/CD pipelines, observability, and secure engineering practices. Track record of scaling teams and delivering in fast-paced ...

code or configuration-driven platforms Basic knowledge of backend services or .NET for integration awareness Familiarity with scripting languages such as Python or JavaScript Experience working in cloud-based environments As part of a leading global Data and AI company, you can look forward to: A competitive salary with ...

little as 3-6 months: Step 1 - Introduction to Development - Complete a selection of professional and industry recognised coding courses covering HTML5, CSS3, Javascript and Python. The training is delivered via multimedia rich video tutorials, presentations and quizzes, through a portal that you study from home. These courses will give ...

preferred, although strong front-end developers willing to learn the Shopify ecosystem and Liquid are encouraged to apply Strong foundations in HTML, CSS and JavaScript, with experience working in Git-based workflows Experience implementing or contributing to CRO experiments and testing backlogs Interest in AI development tools and automation within ...

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 ...

standards for real-time experiences. Document workflows and share learnings for future innovation projects. Your Profile Essential skills/knowledge/experience: Proficiency in JavaScript, HTML/CSS, and frameworks like React, Three.js, or similar. Familiarity with creative coding libraries (e.g., p5.js, GSAP). Basic understanding of UX/ ...

+ Bonus + Package Salary: Up to £120,000 + Bonus + Package Location: London (Hybrid Working) Skills: React as a main language (modern JavaScript/TypeScript) This firm is an elite technology company with exceptionally high standards , known for pushing boundaries and previously setting world records in the tech ...