JavaScript Jobs in London

101 to 125 of 3,221 JavaScript Jobs in London

Software Engineer II - Front End Developer React and Java

London, England, United Kingdom
J.P. MORGAN
Science or similar. Very strong problem solving, analytical, and communication skills (both verbal and written). Recent working experience with client-side technologies – HTML, JavaScript, ReactJS, jQuery, AngularJS, etc. Good understanding of core Java (at least JDK 1.8) & some experience with Spring Boot. Experience using AWS cloud services (e.g., EC2 More ❯
Posted:

Staff Android Engineer

London, England, United Kingdom
Hybrid / WFH Options
John Lewis Partnership
/Gitlab CI Experience with Swift/iOS, GraphQL, Microservice architectures, Docker, Kubernetes, cloud platforms (AWS, GCP, Azure), UX principles, web technologies (HTML, CSS), JavaScript libraries (React, Redux, Webpack), server-side languages (Java/Kotlin) Additional Information: Application involves an online assessment, CV upload, and questions. More info at https More ❯
Posted:

Senior .NET Developer

London, England, United Kingdom
Hybrid / WFH Options
Version 1
will be operating the applications/services you build and contribute to the wider project development. Qualifications Preferably full-stack.Net Core with (HTML, CSS, Javascript) Experience with ASP .Net MVC 5, REST Web APIs Practical development knowledge of Azure services .NET Web API, Rest and OData Web Services In depth More ❯
Posted:

Full Stack Developer - Lead Developer Opportunity

London, England, United Kingdom
Hybrid / WFH Options
The Opportunity Hub UK
key technical decisions that will shape the platform's future Technical Requirements Must Have: - Strong experience with PHP and WordPress development - Proficiency in modern JavaScript, HTML5, and CSS3 - Experience with Laravel framework - Familiarity with React and modern frontend development - Understanding of RESTful APIs and microservices architecture - Experience with AWS services More ❯
Posted:

Head of AI & Technology

City of London, London, United Kingdom
Hybrid / WFH Options
Reed.ai
software development experience, with at least 3 years in a senior or technical lead role. Proven expertise in full-stack development using: TypeScript (and JavaScript frameworks such as NextJS, Node, or Tailwind) Python (including frameworks like Django, Flask, or FastAPI) PostgreSQL and relational database design, optimization, and maintenance. AI Development More ❯
Posted:

Head of AI & Technology

London Area, United Kingdom
Hybrid / WFH Options
Reed.ai
software development experience, with at least 3 years in a senior or technical lead role. Proven expertise in full-stack development using: TypeScript (and JavaScript frameworks such as NextJS, Node, or Tailwind) Python (including frameworks like Django, Flask, or FastAPI) PostgreSQL and relational database design, optimization, and maintenance. AI Development More ❯
Posted:

Head of AI & Technology

South East London, England, United Kingdom
Hybrid / WFH Options
Reed.ai
software development experience, with at least 3 years in a senior or technical lead role. Proven expertise in full-stack development using: TypeScript (and JavaScript frameworks such as NextJS, Node, or Tailwind) Python (including frameworks like Django, Flask, or FastAPI) PostgreSQL and relational database design, optimization, and maintenance. AI Development More ❯
Posted:

Head of AI & Technology

london, south east england, united kingdom
Hybrid / WFH Options
Reed.ai
software development experience, with at least 3 years in a senior or technical lead role. Proven expertise in full-stack development using: TypeScript (and JavaScript frameworks such as NextJS, Node, or Tailwind) Python (including frameworks like Django, Flask, or FastAPI) PostgreSQL and relational database design, optimization, and maintenance. AI Development More ❯
Posted:

Head of AI & Technology

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Reed.ai
software development experience, with at least 3 years in a senior or technical lead role. Proven expertise in full-stack development using: TypeScript (and JavaScript frameworks such as NextJS, Node, or Tailwind) Python (including frameworks like Django, Flask, or FastAPI) PostgreSQL and relational database design, optimization, and maintenance. AI Development More ❯
Posted:

Lead Developer

London, England, United Kingdom
Thermo Fisher Scientific Inc
years of experience as a Java web application developer Experience of full stack web application development using: Java, Scala, Spring, Hibernate JSP, Servlets, REST JavaScript, jQuery, React, Redux, Typescript, CSS, SCSS JUnit, ScalaTest, Cucumber, WebDriver & TDD Jenkins Apache Tomcat, nginx Redshift, MariaDB Bash scripts Python Experience developing full stack greenfield More ❯
Posted:

Principal DevOps - HO - G6

Croydon, London
Government Digital & Data
learning new technologies, we have a large range in the Home Office including: Backend: Java, Node.js, C#, Python, PHP, Scala, Power platform Frontend: React, JavaScript, Typescript, Angular? Data: PostgreSQL, Microsoft SQL Server, Mongodb, Apache Cassandra? DevOps: AWS, Kubernetes, Azure, Jenkins, Docker, Ansible, Terraform Recruitment events We are hosting an Engineering More ❯
Employment Type: Permanent
Salary: £73,900 - £85,690
Posted:

Lead Front End Engineer(Agentic Intelligence)

London, England, United Kingdom
GroupM
line Great interpersonal skills; able to communicate at all levels of seniority and levels of technical understanding SKILLS Influencing technical decisions in a project JavaScript without frameworks Attention to detail and producing pixel perfect implementation of designs A strong work ethic; able to work under pressure and juggle multiple responsibilities More ❯
Posted:

Senior Front End Software Engineer (Remote)

London, England, United Kingdom
Hybrid / WFH Options
M3 Global Research
high-quality applications. Take ownership of assigned deliverables, ensuring work is delivered iteratively while embracing Agile principles. Qualifications Knowledge and Skills: Strong proficiency in JavaScript (ES6+), with a deep understanding of core language concepts and best practices. Expertise in modern frontend frameworks with advanced experience in React, Next.js, and Angular. More ❯
Posted:

Senior Architect , Vice President

London, England, United Kingdom
ZipRecruiter
AWS and Azure services, including compute, storage, networking, and cloud- frameworks. Programming Proficiency: Hands-on experience with programming and frameworks such as Python, Java, JavaScript, React, Node.js, and Terraform etc. PoC and Rapid Iteration Experience: Proven ability to lead and execute proof-of-concept projects with a focus on practical More ❯
Posted:

Mid-Level Software Engineer (.NET / React)

London, England, United Kingdom
Compass Education UK & IE
in a team environment Tech Stack You will have: 3+ years experience in object-oriented programming languages (C#, MS.Net) 3+ years experience in frontend javascript libraries and frameworks (React.js, Node.js and Typescript) A keen attitude to develop a high-quality product with other talented developers A passion for software development More ❯
Posted:

Backend Developer (SFIA4)

London, England, United Kingdom
Hybrid / WFH Options
Zaizi Ltd
testing [cucumber, nightwatch]) Nice to have skills: AWS Knowledge of Open Source BPMN workflow engines (Camunda, Activiti or Flowable) Experience on a front-end javascript framework such as react, angular or vue.js RedHat OpenShift for container orchestration Knowledge of NCSC’s 14 cloud security principles. SC Clearance: Zaizi works with More ❯
Posted:

Senior Software Engineer – Back End, Rates & FX

London, England, United Kingdom
TP ICAP Group
trading platforms and knowledge of financial markets Knowledge of FIX protocol and ability to handle FIX interactions Experience with AWS services Experience with Java, JavaScript or React Experience with serverless architecture and microservices Experience with TDD, BDD or similar approaches Band & level: Manager, 6 #LI-MID #LI-Hybrid Not The More ❯
Posted:

Head of Engineering - Trading

London, United Kingdom
Hybrid / WFH Options
Keyrock
experience. Proven experience building and maintaining high-concurrency, high-performance, low-latency trading systems. Strong proficiency in development and architecture of Rust systems. Node.js (JavaScript/TypeScript) and Python are nice to have. Proficient in data-intensive systems. Proven experience with AWS, Docker. Experience managing and leading engineering teams, with More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Mid-Level Software Developer

London, England, United Kingdom
Isio
Beneficial Experience: CI/CD tools like Jenkins or GitHub Actions. Container orchestration with Kubernetes. Front-end state management with Redux. TypeScript for enhanced JavaScript development. Back-end development with Node.js and Express.js. Monitoring and logging tools like ELK Stack, Prometheus, or Grafana. Automated UI testing with Selenium or Cypress. More ❯
Posted:

Senior Software Engineer I - Menu Foundation [United Kingdom]

London, England, United Kingdom
Hybrid / WFH Options
Olo Inc
software engineering, including excellent knowledge of C#, .NET and object oriented concepts. 3+ years of experience developing and maintaining scalable React applications using modern JavaScript frameworks and libraries (TypeScript preferred). Hands-on experience with RDBMS development. Collaboration with UX/UI designers to implement responsive and user-friendly interfaces. More ❯
Posted:

Senior Full Stack Java Developer

London, England, United Kingdom
Hybrid / WFH Options
Version 1
practices like Code Reviews, CI/CD Pipelines and SOLID/DRY principles. Hands-on developing/coding role using the following technologies: Frontend (JavaScript/TypeScript or Angular or React or Node). Backend (Java, SpringBoot, Hibernate, Kotlin). Experience in estimation and sizing. Integration experience. API Design experience. More ❯
Posted:

Senior Software Engineer

London, England, United Kingdom
Hybrid / WFH Options
UnitedHealth Group
CD tools such as Jenkins, Azure DevOps Automated Testing experience including Unit test development and Integration test development Web Programing experience including HTML, CSS, JavaScript Knowledge of Agile & Software Development Best Practices including code scanning and remediation Preferred Qualifications: Degree in computer science Experience working in a MHRA regulated environment More ❯
Posted:

Cloud Software Engineer – Industrial Microgrid Control

London, England, United Kingdom
Hybrid / WFH Options
Power Technology Engineered Solutions Pty Ltd
industrial User Interfaces and Experiences (UI/UX) Software frameworks: Both .NET with C# for Windows Forms GUI developments; Blazor would be a plus. Javascript frameworks (React.JS, Node.JS or Angular.JS) for Web-GUI development Cloud front-end and back-end development, ideally with Amazon Web Service Databases Cloud-based architectures More ❯
Posted:

Head of Engineering - Trading Systems

London, England, United Kingdom
Hybrid / WFH Options
Keyrock
experience. Proven experience building and maintaining high-concurrency, high-performance, low-latency trading systems. Strong proficiency in development and architecture of Rust systems. Node.js (JavaScript/TypeScript) and Python are nice to have. Proficient in data-intensive systems. Proven experience with AWS, Docker Experience managing and leading engineering teams, with More ❯
Posted:

Senior Full Stack C# .NET Developer

London, England, United Kingdom
Hybrid / WFH Options
WebX Systems Ltd
in C# and .NET. Expertise in: .NET Framework and WinForms Modern .NET (.NET 9) SQL Server (including performance optimisation) Front-end tech (HTML, CSS, JavaScript) Proven experience with application modernisation, including migrating legacy WinForms applications to modern web platforms (Blazor preferred). ·Strong understanding of layered architecture and best practices More ❯
Posted:
JavaScript
London
10th Percentile
£47,500
25th Percentile
£59,000
Median
£80,500
75th Percentile
£110,000
90th Percentile
£135,000