1 to 25 of 72 Permanent JavaScript Jobs in the City of London

technology capability and commercial goals. Drive innovation: pilot emerging technologies (AI, automation, data services) that improve efficiency and insight. Tech Stack: Frontend HTML5, CSS3, JavaScript (ES6+), TypeScript React.js (preferred), Angular, or Vue.js Responsive design (Bootstrap, Tailwind), state management (Redux, Context API) Front-end testing (Jest, React Testing Library, Cypress) Backend ...

Agile and DevOps practices, with a focus on continuous integration and delivery. Some proficiency in one or more programming languages (e.g., .NET, Python, JavaScript) and experience with software architecture patterns. Experience with cloud platforms (e.g. Azure, AWS, GCP) and infrastructure as code (Terraform). Familiarity with CI/CD pipelines ...

ability to take initiative and drive projects forward Proficiency in full-stack development using any object oriented language (we use .NET) and any modern javascript framework (we use React) Experience working with databases (SQL and NoSQL), APIs, and web technologies. Experience with cloud platforms (AWS, GCP, Azure) Solid understanding ...

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 ...

technical discussions Comfort working with stakeholders in regulated environments Eligibility for UK Security Clearance (British citizenship required) Core technologies: Java/Spring React/JavaScript SQL/NoSQL databases Docker/Kubernetes AWS Playwright GitLab, Maven Nice to have: GovUK UI Framework Azure or GCP .NET Benefits Flexible working with ...

financial regulations such as GDPR, SOX Experience with cloud-based QA practices Exposure to AI-assisted testing tools Knowledge of web technologies (HTML, CSS, JavaScript) and browser automation tools (Selenium) Formal QA certification (ISTQB or equivalent) Experience with Microsoft Fabric (advantageous) What the Client Is Looking For A hands ...

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 ...

well across disciplines Bonus: experience with identity systems (e.g. Microsoft Entra ID/Azure AD), SSO, or HRIS integration OUR TECH STACK Frontend: React, JavaScript Backend: C#, .Net, Azure Service Fabric, Kubernetes Infrastructure: Azure, Service Fabric, Cosmos DB WHY COCENTRIC Be a key part of a product that’s transforming ...

full stack developer but with a deep understanding of modern Front End development best practices and an expert in Vue Extensive experience with JavaScript, TypeScript, and modern Front End frameworks Proficiency with CSS preprocessors, HTML5, and CSS3. Familiarity with RESTful APIs, source control (git), and Agile methodologies. Desirable: Experience with ...

sharing. Iterate post-launch using real-world data and user feedback. What We’re Looking For Core Skills Strong foundations in modern Frontend engineering: JavaScript/TypeScript , React , component patterns, state management, performance and accessibility. Ability to translate product ideas and design assets into production-quality experiences. A product-oriented ...

functional frontend code Contribute to API and broader system design & documentation Essential Qualifications: Strong understanding of UX principles and web design fundamentals Expert in Javascript, Typescript, HTML, and CSS Extensive experience with modern web frameworks and patterns (eg. React, Next.js, Tailwind) Experience with real-time and bi-directional communication protocols ...

programming Tech Stack The stack is evolving, and there is openness to new ideas and improvements. Backend: Python, Django Database: PostgreSQL Frontend: HTML, CSS, JavaScript, Bootstrap, HTMX Hosting & Deployment: Heroku, GitHub Actions About You This role is a great fit if you enjoy early-stage environments where your decisions have ...

will contribute to the development of our new web application, powered by a Headless CMS, using the latest frontend technologies. Working with a modern JavaScript stack, your primary focus will be on coding, testing, and enhancing the functionality of Travelex's and partner applications. Being part of the Online team ...

least a BSc level or higher in Computer Science or Mathematics from a Russell Group University or equivalent. Desirable skills: HTML5, CSS, JavaScript Multi-threaded application development Understanding of Windows technologies If you feel you have the skills and experience required for this opportunity, please contact Oliver Wilson on (phone ...

Role: Senior Product Engineer (Fullstack) Salary/Package: £90k-£140k + Equity Options Company Sector: AI Start Up Experience Level: Senior (5+ years) Tech: JavaScript, TypeScript, Node.js, React.js, AWS Location: Central London Working Arrangement: 5 days a week in the office (flex hours) Product Engineer (Full Stack) Help shape ...

vulnerabilities, working directly with software engineers to support remediation. Ability to read and interpret code in at least one common programming language (e.g., C#, JavaScript, Python). Knowledge of CI/CD pipelines and the integration of security tooling into developer workflows (e.g., GitHub Actions, Azure DevOps). Strong understanding ...

improve existing user journeys What We're Looking For Essential: 5+ years of professional frontend engineering experience Strong expertise in React and modern JavaScript/TypeScript Deep understanding of HTML, CSS, and web standards Experience building responsive, accessible user interfaces Proficiency with modern frontend build tools and workflows Strong understanding ...

least a BSc level or higher in Computer Science or Mathematics from a Russell Group University or equivalent. Desirable skills: HTML5, CSS, JavaScript Multi-threaded application development Understanding of Windows technologies If you feel you have the skills and experience required for this opportunity, please contact Oliver Wilson ...

ensure technology is used to its full potential. Requirements: Strong technical design and coding skills using modern web technologies and frameworks, such as JavaScript/TypeScript and/or C#/.NET, Node.js, cloud platforms (Azure, AWS, or GCP), Kubernetes, SQL and NoSQL databases, and Redis. Broad knowledge of server ...

years of experience building and shipping production software (full-stack or backend) Strong programming skills in at least one modern language (e.g., Python, TypeScript, JavaScript) Ability to thrive in early-stage, fast-paced, and high-uncertainty environments Excellent communication and collaboration skills Demonstrated curiosity and drive to learn through experimentation ...

Comfortable navigating environments across Red Hat Enterprise Linux 8, Oracle Solaris, and Windows Server (2008–2019). Geospatial Integration: Experience with GIS tools including JavaScript/OpenLayers, TileCache, and MapServer. Mandatory Criteria Active Security Clearance: You must hold current, active NPPV3 and SC Clearance . We cannot consider candidates without ...

integrated QA pipelines (e.g. GitLab) Working closely with front-end and back-end engineering teams What we're looking for Hands-on experience in JavaScript + Selenium Web Driver (writing, executing, analysing, and fixing automation tests) Experience in Playwright & Cucumber Extensive experience managing QA teams (both automation and manual ...

certifications 3+ years people management experience in technical environments Expert knowledge of ServiceNow modules (ITSM, ITOM, HRSD, CSM) Strong experience with JavaScript, REST/SOAP APIs, and system integrations Proven track record of delivering complex ServiceNow implementations Excellent communication and stakeholder management skills Experience with SAFe/Agile/Scrum ...