1 to 25 of 203 Permanent JavaScript Jobs in the City of London

environments where agility and ownership are essential Proven technical leadership experience, whether mentoring developers, leading projects, or driving architectural decisions Expert proficiency in JavaScript/TypeScript with modern frameworks such as React, Next.js, or Vue for building responsive front-end experiences Strong back-end capabilities with Node.js and Express, plus ...

methodologies Your Profile Experience: From 1 year in software development to Principal-level leadership Proficiency in one or more languages: C++, C#, Python, Java, JavaScript, TypeScript Familiarity with frameworks like .NET, Node.js, React, Angular, Spring Boot, Django Knowledge of cloud platforms (AWS, Azure, GCP) and DevOps tools (Docker, Kubernetes ...

expertise during bids and proposals, influencing solution design and delivery approach. Tech Stack You’ll work with modern, scalable technologies and frameworks including: Languages: JavaScript/TypeScript, Java, Frameworks: React, Angular, Node.js, Spring Boot, .NET Cloud Platforms: AWS, Azure, GCP CI/CD: Jenkins, GitHub Actions, Azure DevOps IaC: Terraform ...

capability and commercial goals. Drive innovation: pilot emerging technologies (AI, automation, data services) that improve efficiency and insight. Your Technical Toolkit 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 ...

technologies and best practices. Skills and Experience Demonstrated experience as a Full Stack Engineer or in a similar role. Advanced proficiency in React, Node.js, JavaScript/TypeScript, HTML, and CSS. Strong understanding of back-end technologies, databases, and system integration principles. Proven ability to write clean, efficient, and well-tested ...

deadlines Ability to mentor junior team members and work collaboratively Essential Technical Skills C#/.NET Core (4+ years) ASP.NET MVC React (3+ years) JavaScript/TypeScript/jQuery/AJAX (3+ years) HTML/CSS (3+ years) SQL Server (3+ years) Web API/WCF/Web Services (2+ ...

consulting environment, working closely with architects, designers, product teams and client stakeholders. Key Responsibilities Design and build applications using ASP.NET Core, C# and modern JavaScript frameworks Develop responsive, accessible front-end interfaces using React, Angular or Blazor/Razor Contribute to cloud-native architectures on AWS or Azure Implement modern ...

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 ...

Product mindset and ownership from build to deploy in an agile environment What You’ll Work With Backend: Node.js (plus some Python, C++) Frontend: JavaScript (Vue.js) & TypeScript Data: PostgreSQL & DynamoDB Cloud & CI/CD: AWS Lambda, GitHub Actions Nice to Haves Financial services or large‐scale market data experience Python ...

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 ...

field (or equivalent qualification) is needed. Significant experience of Software Development is required. C# (essential) Web development - ASP.NET MVC, Web APIs, SQL, HTML, CSS, JavaScript (essential) Angular (Considered as plus) React (Considered as plus) Prior experience of working in Finance domain (Investment bank, Asset Management firm, Hedge Fund) is essential. ...

backend systems Build cloud-native solutions on Azure with containerization Implement RESTful APIs using Java integrated with banking platforms Develop full-stack features with JavaScript frameworks (Angular) Champion CI/CD, TDD/BDD, and engineering best practices Optimize Java applications for high-volume, high-availability systems What You Need ...

2+ years of Python experience in a commercial environment, with strong asynchronous programming skills 2+ years of frontend development experience with React and modern JavaScript/TypeScript Demonstrated ability to build and maintain polished, responsive user interfaces Experience with REST APIs and modern web frameworks, such as FastAPI Practical experience ...

telecoms/billing experience advantageous) Technical Skills Essential Java, Spring Boot, J2EE REST APIs, Microservices, Kubernetes/OpenShift RDBMS, SQL, PL/SQL Angular, JavaScript, Bootstrap, HTML5, CSS3 Experience with application servers (e.g., JBoss, Oracle AS) Git, Maven, Jenkins, debugging tools Strong understanding of SDLC and Agile methodologies Desirable JBoss ...

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 ...

Databricks development and deployment. Optimise Databricks workloads for performance and cost. Need to program using the languages such as SQL, Python, R, YAML and JavaScript Data Integration: Integrate data from various sources, including relational databases, APIs, and streaming data sources. Implement data integration patterns and best practices. Work with ...

structured outputs Languages: Expert proficiency in Python Cloud & DevOps: Solid experience with GCP/AWS/Azure, Docker, and Git Strong Plus: TypeScript/JavaScript: Ability to write full-stack applications or use JS/TS-based AI SDKs Graph Technology: Experience with Knowledge Graphs (Neo4j) or GraphRAG implementations Fine ...

architecture. Understand Software Engineering techniques and processes. Strong interpersonal, communication, and presentation skills applicable to a wide audience. Experience with PyTorch, Scikit-learn, Go, JavaScript, Azure Pipelines, and Databricks is desirable, but not essential. Experience of participation in software engineering efforts for AI-enabled SaaS products is desirable ...

work) Ability to drive high-quality engineering practices, code reviews, testing, and deployment standards Frontend & Full-Stack Development Comfortable developing or supervising development in JavaScript/HTML/CSS Understanding of modern frontend frameworks beneficial but not required Database Engineering Experienced with both SQL and NoSQL databases, including performance tuning ...

Essential skills include strong experience in test automation with an ETRM platform with as many of the following as possible: Programming & Scripting: Python, Java, JavaScript, C++, Scriban Web Technologies: RESTful APIs, HTTP, JSON, HTML, CSS, Node.js Databases: SQL Server, MySQL, PostgreSQL, MongoDB Tools & Frameworks: Git, Docker, Jenkins, Kubernetes, Agile (Scrum ...

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 ...

quality and consistency Qualifications & Skills: •A degree in computer science, software engineering, or a related field •Proficiency in React.js and its core principles •Strong JavaScript, TypeScript HTML5, and CSS3 skills •Experience with popular React.js workflows (such as Redux) •Familiarity with RESTful APIs and integration •Knowledge of modern authorization mechanisms, such ...

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 ...

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 ...