JavaScript Jobs in London

176 to 200 of 855 JavaScript Jobs in London

Lead Data Engineer

London, United Kingdom
Hybrid / WFH Options
Publicis Groupe UK
Lambda Proficient in Git, CI/CD pipelines, and DevOps tools (e.g., Azure DevOps) Hands-on experience with web scraping, REST API integrations, and streaming data pipelines Knowledge of JavaScript and front-end frameworks (e.g., React) Additional Information Publicis Groupe operates a hybrid working pattern with full time employees being office-based three days during the working week.We are supportive More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Full Stack Engineer

London, United Kingdom
Story Terrace Inc
junior developers through hands-on leadership, code reviews, and knowledge-sharing. Write, review, and own high-quality code primarily in Python (using frameworks like Flask, FastAPI, or Django) and JavaScript/TypeScript (preferably React). Develop and maintain RESTful APIs and modern user interfaces, ensuring an excellent user experience and technical excellence. Work directly with clients providing technical expertise and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Engineer - Enterprise Applications

London, United Kingdom
Hybrid / WFH Options
Bauer Media Outdoor
to ensure smooth delivery of technical projects What we're looking for Strong experience delivering enterprise integrations, APIs, and event-driven middleware. Deep familiarity with Java, Spring, Hibernate, SQL, JavaScript, Unix - Solaris, Linux, IDE - Eclipse or IntelliJ, Git and GitHub, Node JS. Hands-on experience integrating with Finance ERPs (Dynamics 365 and SAP are desirable), HR, and third-party SaaS More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Full-Stack Engineer

London, United Kingdom
Hybrid / WFH Options
Orkestro
don't ask tricky or curveball questions. Don't expect "how many golf balls can you fit in a bus?" or "what's the output of + +! in JavaScript?" types of questions, because we don't think they add any value. Even though we call these "interviews", we see them more like conversations. We want you to feel as More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Azure Developer - SC Cleared

London, South East, England, United Kingdom
Hybrid / WFH Options
Lorien
and implement web applications with a focus on performance and scalability. Experience with databases and APIs, ensuring seamless integration within the application. Technologies Must have: C#, .Net, HTML/Javascript Ideal: SQL DB, Azure Development Experience (inc DevOps), Angular UI. If this role is of interest to you, and you have an active SC Clearance, please apply now! Carbon60, Lorien More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Frontend Engineer (Shopify Theme)

London, United Kingdom
Falcon Chase International
maintainable code. Must-Have Skills 6+ years in Frontend development. Strong Shopify expertise : Liquid templates, custom storefronts, Hydrogen framework. Hands-on experience with Hydrogen & Headless architecture . Proficiency with JavaScript, TypeScript, React, Node.js, HTML5, CSS3 . Experience in design-to-code workflows using Figma. Familiarity with Git workflows, CI/CD pipelines, and TDD . Nice-to-Have Skills Knowledge More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full-Stack Developer

South Croydon, Surrey, England, United Kingdom
Sanderson
/day Inside IR-35 3-6 month initial contract - likely extension SC Cleared role Remote with ad hoc travel to Croydon Tech Stack: Expertise in (essential) React, TypeScript, JavaScript, NodeJS, Python, Postgres Familiarity with (desirable) Docker, Kubernetes, AWS, CI/CD Responsibilities : * Be a technical specialist for one or more products or services * Develop features, resolve bugs, elaborate stories More ❯
Employment Type: Full-Time
Salary: £505 - £506 per day
Posted:

Senior Software Developer

London, South East, England, United Kingdom
Spectrum IT Recruitment
level aptitude for technology Education to at 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 or email Spectrum IT More ❯
Employment Type: Full-Time
Salary: £120,000 per annum
Posted:

Senior Software Developer

City of London, London, United Kingdom
Spectrum IT Recruitment
level aptitude for technology Education to at 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 number removed) or More ❯
Employment Type: Permanent
Salary: £100000 - £120000/annum
Posted:

Senior Full Stack & AI Automation Engineer

London, South East, England, United Kingdom
Salt Search
10+ years building operational support systems and automation in Python. Proven leadership in code reviews and mentoring. Hands-on experience with Selenium and iOS functional automation. Strong React/JavaScript UI development background. Back-end engineering with Python + Postgres. AI/ML expertise in LLMs, embeddings, and RAG systems. Experience with ETL pipelines, vector databases, and modern DevOps (Jenkins More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Power Platform Senior Developer - London Hybrid - £61k

London, South East, England, United Kingdom
Hybrid / WFH Options
Nigel Frank International
of Dynamics 365 modules (such as Sales, Customer Service, or Field Service). Familiarity with Azure services and integration approaches (APIs, Logic Apps, Service Bus). Coding experience with JavaScript, C#, or other relevant languages. Strong communication skills with the ability to explain technical concepts clearly. A collaborative, supportive approach to leadership and mentoring. Background working in Agile or DevOps More ❯
Employment Type: Full-Time
Salary: £61,000 per annum
Posted:

Power Platform Senior Developer - London (Hybrid) - £61k

London, United Kingdom
Hybrid / WFH Options
Nigel Frank International
of Dynamics 365 modules (such as Sales, Customer Service, or Field Service). Familiarity with Azure services and integration approaches (APIs, Logic Apps, Service Bus). Coding experience with JavaScript, C#, or other relevant languages. Strong communication skills with the ability to explain technical concepts clearly. A collaborative, supportive approach to leadership and mentoring. Background working in Agile or DevOps More ❯
Employment Type: Permanent
Salary: £61000/annum
Posted:

Content Processing Technical Consultant - Developed Vetting

City of London, London, United Kingdom
PS Computer Services Ltd t/a Parker Shaw
Required Skills & Experience: C#/java, .NET Core Containerisation (Docker, Kubernetes, OpenShift) xUnit Agile working practices CI/CD tooling Scripting experience (Python, Perl, Bash, etc.) ELK (Elastic stack) JavaScript Cypress Linux experience Search engine technology (e.g., Elasticsearch) Big Data Technology experience (Hadoop, Spar k , Kafka, etc.) Microservice and cloud native architecture Desirable: Able to demonstrate experience of troubleshooting and More ❯
Employment Type: Contract
Rate: Up to £700 per day inside IR35
Posted:

Backend Engineer

City of London, London, United Kingdom
algo1
services (Azure, GCP, AWS) AI-Native development: use AI tools such as CoPilot or Cursor a collaborator and accelerator of development. Nice to Have: Experience in frontend development (eg. Javascript, Typescript, React.js) Worked with real-time data collection and/or processing Worked in an IoT or Edge-oriented architectures Experience or knowledge in retail POS, inventory, or loyalty systems More ❯
Posted:

Backend Engineer

London Area, United Kingdom
algo1
services (Azure, GCP, AWS) AI-Native development: use AI tools such as CoPilot or Cursor a collaborator and accelerator of development. Nice to Have: Experience in frontend development (eg. Javascript, Typescript, React.js) Worked with real-time data collection and/or processing Worked in an IoT or Edge-oriented architectures Experience or knowledge in retail POS, inventory, or loyalty systems More ❯
Posted:

Backend Engineer

london, south east england, united kingdom
algo1
services (Azure, GCP, AWS) AI-Native development: use AI tools such as CoPilot or Cursor a collaborator and accelerator of development. Nice to Have: Experience in frontend development (eg. Javascript, Typescript, React.js) Worked with real-time data collection and/or processing Worked in an IoT or Edge-oriented architectures Experience or knowledge in retail POS, inventory, or loyalty systems More ❯
Posted:

Backend Engineer

london (city of london), south east england, united kingdom
algo1
services (Azure, GCP, AWS) AI-Native development: use AI tools such as CoPilot or Cursor a collaborator and accelerator of development. Nice to Have: Experience in frontend development (eg. Javascript, Typescript, React.js) Worked with real-time data collection and/or processing Worked in an IoT or Edge-oriented architectures Experience or knowledge in retail POS, inventory, or loyalty systems More ❯
Posted:

Engineering Lead

West London, London, United Kingdom
McGregor Boyall Associates Limited
the build and maintenance of internal systems and applications. Key Skills Required: Software development experience in C# is preferred. (Python is a plus) Full stack development experience preferably in JavaScript Cloud - Azure or AWS Proven experience leading distributed engineering teams and delivering complex software projects. Excellent communication and stakeholder management skills. Experience with agile methodologies and product development workflows. If More ❯
Employment Type: Permanent
Posted:

Python Developer

City of London, London, United Kingdom
La Fosse
Position: Full Stack Engineer (UK, early-stage company) Backed by technology start-up accelerator and venture capital firm 3+ Years of Experience | Python, JavaScript, Machine Learning, DevOps We’re seeking a versatile engineer to join our clients small but growing team. This role is central to building and scaling technology, with responsibilities spanning backend development, infrastructure, data workflows, and applied More ❯
Posted:

Python Developer

London Area, United Kingdom
La Fosse
Position: Full Stack Engineer (UK, early-stage company) Backed by technology start-up accelerator and venture capital firm 3+ Years of Experience | Python, JavaScript, Machine Learning, DevOps We’re seeking a versatile engineer to join our clients small but growing team. This role is central to building and scaling technology, with responsibilities spanning backend development, infrastructure, data workflows, and applied More ❯
Posted:

Back End Developer - DV Cleared - Hybrid - Various Locations

London, United Kingdom
Hybrid / WFH Options
Experis
experience in software development and a strong interest in writing quality code Solid understanding of back-end development using one or more of the following: Java, Python, TypeScript or JavaScript Familiarity with good engineering patterns and practices, and the ability to articulate them clearly Experience working in agile environments (Scrum, Kanban or similar) Enthusiastic about learning, collaborating with diverse teams More ❯
Employment Type: Permanent
Posted:

Python Developer

london, south east england, united kingdom
La Fosse
Position: Full Stack Engineer (UK, early-stage company) Backed by technology start-up accelerator and venture capital firm 3+ Years of Experience | Python, JavaScript, Machine Learning, DevOps We’re seeking a versatile engineer to join our clients small but growing team. This role is central to building and scaling technology, with responsibilities spanning backend development, infrastructure, data workflows, and applied More ❯
Posted:

Python Developer

london (city of london), south east england, united kingdom
La Fosse
Position: Full Stack Engineer (UK, early-stage company) Backed by technology start-up accelerator and venture capital firm 3+ Years of Experience | Python, JavaScript, Machine Learning, DevOps We’re seeking a versatile engineer to join our clients small but growing team. This role is central to building and scaling technology, with responsibilities spanning backend development, infrastructure, data workflows, and applied More ❯
Posted:

Software Engineer

Hounslow, England, United Kingdom
Scalian
Proficient in C++11 or later, with a strong understanding of memory management, concurrency, and object-oriented design . Hands-on experience with AngularJS and front-end development ( HTML, CSS, JavaScript ). Familiarity with REST APIs , JSON , and web service integration . Experience working in software maintenance/support roles with bug fixing and system enhancements. Strong debugging and problem-solving More ❯
Posted:

Software Engineer

london, south east england, united kingdom
Scalian
Proficient in C++11 or later, with a strong understanding of memory management, concurrency, and object-oriented design . Hands-on experience with AngularJS and front-end development ( HTML, CSS, JavaScript ). Familiarity with REST APIs , JSON , and web service integration . Experience working in software maintenance/support roles with bug fixing and system enhancements. Strong debugging and problem-solving More ❯
Posted:
JavaScript
London
10th Percentile
£47,500
25th Percentile
£60,000
Median
£90,000
75th Percentile
£122,500
90th Percentile
£137,500