1 to 25 of 30 JavaScript Jobs in the City of Westminster

Agile development cycles, contributing to sprint planning, code reviews, and continuous delivery. Key Skills/Experience: Proven experience in Node.js development Strong knowledge of JavaScript (ES6+), asynchronous programming, and event-driven architecture. Experience with building and maintaining RESTful APIs. Solid understanding of SQL and NoSQL databases (e.g., MongoDB, PostgreSQL, MySQL ...

clients you’ve served Written production-quality code using a variety of languages and frameworks, including but not limited to: Python, Java, JavaScript, TypeScript, React, Ruby, Scala, R, SQL, and Go Leveraged AI-assistive development tools for tasks like scaffolding, refactoring, debugging, test generation, and documentation Experience building or integrating ...

experience with both is highly advantageous). Proficiency in API testing tools and practices: Postman, REST Assured, GraphQL. Solid programming skills in TypeScript/JavaScript or Java. Experience with microservices and micro-frontends. Practical knowledge of CI/CD pipelines using GitLab (Jenkins is a nice to have) Familiarity with ...

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 ...

Skills: Formal training or certification in software engineering concepts Hands-on experience in system design, application development, testing, and operational stability Proficiency coding with JavaScript and using front-end UI frameworks such as React or Angular Experience building ASP.NET MVC, Web API, or REST style applications Proficiency coding in C# ...

product lifecycle ownership (build, test, deploy, monitor, iterate); growth mindset with continuous learning and knowledge sharing. Code: Java 17/21 (Spring, Maven), Groovy, JavaScript/TypeScript (Angular) Testing: JUnit, Spock Deployment: Private Cloud (VMs/containers) Tooling: GitLab (git and CI/CD), IntelliJ, Windsurf, Docker, Splunk, AppDynamics ...

code generation, refactoring, debugging, documentation, and testing. Required Qualifications, Capabilities, and Skills: Formal training or certification in software engineering. Expertise in HTML, CSS, JavaScript, React, TypeScript, and state management. Experience optimizing and debugging performance and memory issues in web applications. Strong communication and collaboration skills with cross-functional teams. Familiarity ...

knowledge of front end frameworks (Angular, React, other similar) Spring framework or Jax-RS, Jax-WS, JPA Knowledge of selected front end technologies (HTML, JavaScript, CSS) Rest, Hibernate, Docker, Terraform, GitHub, Jenkins, development and deployment in a cloud environment SQL TDD/BDD Experience of working with cloud infrastructure (Azure ...

rota as required Essential Criteria: Proven Azure commercial experience in AI Foundry, ACS/Telephony, Voice Live, Azure ML Proven industry experience with Python, Javascript, Typescript, React, Redux, Java Experience with LLM’s including realtime models Experience with Docker, Container Apps, containerised distributed systems, Terraform, Kafka, New Relic, MCP, Websockets ...

delivery of production-grade software using a variety of languages and frameworks, including but not limited to: Java, C#/.NET, Python, TypeScript, JavaScript, React, Go, Ruby, Scala, R, and SQL Actively experimented with AI development tools and translated that experimentation into faster, higher-quality delivery for your teams ...

SaaS environment Strong, hands on experience with Swift, which is essential for this role Experience working with modern languages and frameworks such as TypeScript, JavaScript, Node.js, and Angular Deep understanding of software architecture principles, patterns, and design methodologies Experience with cloud platforms such as Azure, AWS, or GCP Strong knowledge ...

deployments. Curiosity to understand the business domain and translate product strategy into technical solutions. Working knowledge of Groovy with Spock preferred. Working knowledge of JavaScript/TypeScript and Angular 15+ preferred. At BNY, our culture speaks for itself, check out the latest BNY news at: BNY Newsroom BNY LinkedIn Here ...

systems e.g., ELK, Nagios, New Relic, DataDog, Splunk etc. • Working knowledge of digital delivery processes and methodologies. • Working knowledge of Atlassian Toolset. • Knowledge of Javascript frontend frameworks. • Understanding of front-end technologies, such as HTML5, and CSS3. • Understanding the nature of asynchronous programming, its quirks and workarounds. • Understanding of database ...

senior or principal level in software engineering • Strong hands-on experience with modern programming languages such as TypeScript, C++, or similar • Experience with JavaScript ecosystems, Node.js, and Angular • Deep understanding of software architecture, microservices, and distributed systems • Experience working with cloud platforms such as Azure, AWS, or GCP • Familiarity with ...

languages, including the Spring framework. Experience building and designing scalable web applications that handle large amounts of traffic - ideally using React based frontend applications, Javascript/Typescript. System Design & Operation: Proven experience designing and operating CI/CD pipelines, Distributed, and Concurrent Systems. Product Ownership: A strong product mindset, accountability ...

team culture, accountability, and performance. Strong database and data modeling expertise, including design, optimization, and best practices. Strong proficiency in modern development stacks (e.g., JavaScript/TypeScript, C#, .NET, Angular and/or React). Working knowledge of AI trends and practical ways AI can improve development and delivery outcomes. ...

mobile-first product work. Strong working knowledge of RESTful and GraphQL APIs, serverless architectures and CI/CD pipelines. Comfortable in TypeScript and JavaScript, with experience in cloud-native ecosystems and modern tooling. A track record of using data and experimentation to guide technical and product decisions. Demonstrable experience with ...

accelerate development while maintaining code quality, security, correctness, and maintainability. Requirements: Proficiency in development languages, including but not limited to: Python, C#, .NET, JavaScript, TypeScript, React, and Angular. Proficiency in at least one agentic development tool, including but not limited to: GitHub Copilot, OpenAI Codex, Claude Code, Cursor, or Coder. ...

years of hands-on experience in software engineering, specifically focused on developing and delivering modern web applications, APIs, and scalable platforms. Proficiency in JavaScript and Python, with a proven track record of delivering high-quality, maintainable code and leveraging both languages to solve complex technical challenges. Full-stack expertise, comfortable ...

Contributing to technical presentations and documentation of prototype capabilities What you’ll need: Strong software development skills with proficiency in multiple programming languages (Python, JavaScript/TypeScript, etc.) Hands-on experience with machine learning frameworks (PyTorch, TensorFlow, or similar) Extensive daily use of generative AI tools for coding (Claude, Cursor ...

warehouse · Practical experience of using digital data - ideally Optimizely or a similar enterprise optimisation platform. · Data processing for customer segmentation: SQL is highly desirable, Javascript including Node.js or Python would be an advantage. xcunqrw · Practical experience of using data visualisation tools such as Looker and Tableau · Enjoys task-focused delivery ...

your process Familiarity with financial terminology Knowledge of Americans with Disabilities Act Standards for Accessible Design and WCAG Working knowledge of HTML, CSS, and JavaScript ABOUT US J.P. Morgan is a global leader in financial services, providing strategic advice and products to the world's most prominent corporations, governments, wealthy ...

influence; ability to simplify complexity, make evidence-based decisions and drive continuous improvement. Corporate Actions domain experience is strongly preferred. Groovy/Spock and JavaScript/TypeScript with Angular for full-stack contexts preferred Financial services background with risk and controls in regulated environments preferred How We Work: Agile (Scrum … product lifecycle ownership (build, test, deploy, monitor, iterate); growth mindset with continuous learning and knowledge sharing. Code: Java 17/21 (Spring, Maven), Groovy, JavaScript/TypeScript (Angular) Testing: JUnit, Spock Architecture: Microservices Deployment: Private Cloud (VMs/containers) Tooling: GitLab (git and CI/CD), IntelliJ, Windsurf, Docker, Splunk ...

written communication skills. Strong proficiency in React and its core principles. Solid grasp of Web fundamentals: HTML5 (Semantics & Structure) CSS (Responsive Design, Specificity) JavaScript ES6 General Networking (HTTP, IP & DNS, Caching) Proficient with Chrome Developer Tools or browser equivalent. Experience with version control tools (VCS), preferably Git. Experience with Docker. … Experience with GraphQL Experience with Node.js Worked with GraphQL APIs Feature flagging/AB testing Appreciation/Exposure to React Native Knowledge of other JavaScript frameworks like Angular, Vue, Next.js, Gatsby. Familiarity with agile methodologies beyond Scrum. Delivery experience on cloud platforms and familiarity with AWS Experience with Design systems ...

that you will be responsible for will have a global reach, impacting millions of customers. Some of the tech we are using at scale: Javascript, Typescript, Node.JS, GraphQL, REST, Kafka, Azure Cloud, Redis, Varnish Cache, Apollo Federation, Docker, Kubernetes etc. About the team Tesco’s xAPI (Experience API) powers Tesco … sustainably as a team ⁃ Tesco has a “do the right thing” mentality ⁃ We promote flexible working Job Responsibilities • Use your in-depth knowledge of JavaScript, Typescript, Node.JS, cloud and the backend services ecosystem to develop, and deploy scalable backend systems. • Work with product managers to understand business/product requirements. ...