ECMAScript Jobs in London

351 to 375 of 1,339 ECMAScript Jobs in London

Senior Software Engineers (Python)

London, UK
Hybrid / WFH Options
Morson Edge (Technology)
a pivotal role in influencing the products direction and long-term success. What You Bring Deep understanding of modern web applications and scalable architecture. Hands-on experience with Python, JavaScript/TypeScript, and cloud (AWS/GCP). Strong focus on code quality, testing, and observability. A passion for learning, problem-solving, and building products that make a difference. Why More ❯
Employment Type: Part-time
Posted:

Senior Software Engineers (Python)

London, United Kingdom
Hybrid / WFH Options
Morson Edge (Technology)
pivotal role in influencing the product's direction and long-term success. What You Bring Deep understanding of modern web applications and scalable architecture. Hands-on experience with Python, JavaScript/TypeScript, and cloud (AWS/GCP). Strong focus on code quality, testing, and observability. A passion for learning, problem-solving, and building products that make a difference. Why More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineers (Python)

City of London, London, United Kingdom
Hybrid / WFH Options
Morson Edge (Technology)
pivotal role in influencing the product’s direction and long-term success. What You Bring Deep understanding of modern web applications and scalable architecture. Hands-on experience with Python, JavaScript/TypeScript, and cloud (AWS/GCP). Strong focus on code quality, testing, and observability. A passion for learning, problem-solving, and building products that make a difference. Why More ❯
Posted:

Senior Software Engineers (Python)

london, south east england, united kingdom
Hybrid / WFH Options
Morson Edge (Technology)
a pivotal role in influencing the products direction and long-term success. What You Bring Deep understanding of modern web applications and scalable architecture. Hands-on experience with Python, JavaScript/TypeScript, and cloud (AWS/GCP). Strong focus on code quality, testing, and observability. A passion for learning, problem-solving, and building products that make a difference. Why More ❯
Posted:

Senior Software Engineers (Python)

london (city of london), south east england, united kingdom
Hybrid / WFH Options
InterQuest Group
a pivotal role in influencing the products direction and long-term success. What You Bring Deep understanding of modern web applications and scalable architecture. Hands-on experience with Python, JavaScript/TypeScript, and cloud (AWS/GCP). Strong focus on code quality, testing, and observability. A passion for learning, problem-solving, and building products that make a difference. Why More ❯
Posted:

Senior Frontend Developer

Greater London, England, United Kingdom
Premier Group
They are also growing the team so plenty of opportunities to take on additional responsibilities, lead projects or eventually step into a lead role. Role Responsibilities: Essentials: React, Typescript, JavaScript, HTML, CSS. Additional: Backend Integration, RestAPIs, JIRA. Confident working in an Agile environment. Good collaboration skills and ability to work across global teams. Excellent frontend skills and enhancing user experiences. More ❯
Posted:

Senior Frontend Developer

london, south east england, united kingdom
Premier Group
They are also growing the team so plenty of opportunities to take on additional responsibilities, lead projects or eventually step into a lead role. Role Responsibilities: Essentials: React, Typescript, JavaScript, HTML, CSS. Additional: Backend Integration, RestAPIs, JIRA. Confident working in an Agile environment. Good collaboration skills and ability to work across global teams. Excellent frontend skills and enhancing user experiences. More ❯
Posted:

Generative Ai Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Stealth IT
/Managerial experience as a GenAi Developer/Python (With commercial GenAi FS experience) Python - FastAPI Typescript, React, Next.js or Vite LangChain, LangGraph, CrewAI, or Vercel AI (Python or JavaScript) LLM platforms: OpenAI, Anthropic, Mistral, or Llama AWS or Azure Your Responsibilities: Collaborate with the development team to build a comprehensive knowledge pool of GenAI technologies Develop innovative POCs for More ❯
Employment Type: Full-Time
Salary: £55,000 - £88,000 per annum
Posted:

Power Platform Developer

City of London, London, United Kingdom
Intec Select
Strong experience integrating and extending D365 F&O , including basic X++ development Proficiency in Azure Functions , Azure AI models , and other Azure services Strong command of SQL , Power Fx , JavaScript , JSON , and C# Familiarity with tools such as Visual Studio , Git , Azure DevOps , or Monday Dev Qualifications Degree in Computer Science, Information Technology, or related field Certifications such as PL More ❯
Posted:

Power Platform Developer

London Area, United Kingdom
Intec Select
Strong experience integrating and extending D365 F&O , including basic X++ development Proficiency in Azure Functions , Azure AI models , and other Azure services Strong command of SQL , Power Fx , JavaScript , JSON , and C# Familiarity with tools such as Visual Studio , Git , Azure DevOps , or Monday Dev Qualifications Degree in Computer Science, Information Technology, or related field Certifications such as PL More ❯
Posted:

Power Platform Developer

london, south east england, united kingdom
Intec Select
Strong experience integrating and extending D365 F&O , including basic X++ development Proficiency in Azure Functions , Azure AI models , and other Azure services Strong command of SQL , Power Fx , JavaScript , JSON , and C# Familiarity with tools such as Visual Studio , Git , Azure DevOps , or Monday Dev Qualifications Degree in Computer Science, Information Technology, or related field Certifications such as PL More ❯
Posted:

Power Platform Developer

london (city of london), south east england, united kingdom
Intec Select
Strong experience integrating and extending D365 F&O , including basic X++ development Proficiency in Azure Functions , Azure AI models , and other Azure services Strong command of SQL , Power Fx , JavaScript , JSON , and C# Familiarity with tools such as Visual Studio , Git , Azure DevOps , or Monday Dev Qualifications Degree in Computer Science, Information Technology, or related field Certifications such as PL More ❯
Posted:

Graduate / Junior Software Engineer Mission-Led Start-Up 35k50k + Benefits

London, UK
Hybrid / WFH Options
Kioni Talent
A STEM degree (or equivalent qualification) Evidence of your passion for technology whether through personal projects, internships, open-source contributions, or hackathons Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.) Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS A collaborative mindset and eagerness to be part of a growing team Why Join? Work with a More ❯
Employment Type: Part-time
Posted:

Senior Frontend Engineer

London Area, United Kingdom
Impala Search
who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of front-end development experience building large-scale web applications. Expertise in React, TypeScript/JavaScript, HTML, and CSS . A strong appreciation for UI/UX design and a passion for delivering exceptional user experiences. Understanding of Design Patterns and SOLID principles . Experience building More ❯
Posted:

Senior Frontend Engineer

City of London, London, United Kingdom
Impala Search
who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of front-end development experience building large-scale web applications. Expertise in React, TypeScript/JavaScript, HTML, and CSS . A strong appreciation for UI/UX design and a passion for delivering exceptional user experiences. Understanding of Design Patterns and SOLID principles . Experience building More ❯
Posted:

Graduate / Junior Software Engineer Mission-Led Start-Up 35k50k + Benefits

City of London, Greater London, UK
Hybrid / WFH Options
Kioni Talent
A STEM degree (or equivalent qualification) Evidence of your passion for technology whether through personal projects, internships, open-source contributions, or hackathons Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.) Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS A collaborative mindset and eagerness to be part of a growing team Why Join? Work with a More ❯
Employment Type: Part-time
Posted:

Graduate / Junior Software Engineer Mission-Led Start-Up 35k50k + Benefits

london, south east england, united kingdom
Hybrid / WFH Options
Kioni Talent
A STEM degree (or equivalent qualification) Evidence of your passion for technology whether through personal projects, internships, open-source contributions, or hackathons Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.) Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS A collaborative mindset and eagerness to be part of a growing team Why Join? Work with a More ❯
Posted:

Senior Frontend Engineer

london, south east england, united kingdom
Impala Search
who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of front-end development experience building large-scale web applications. Expertise in React, TypeScript/JavaScript, HTML, and CSS . A strong appreciation for UI/UX design and a passion for delivering exceptional user experiences. Understanding of Design Patterns and SOLID principles . Experience building More ❯
Posted:

Graduate / Junior Software Engineer – Mission-Led Start-Up – £35k–£50k + Benefits

City of London, London, United Kingdom
Hybrid / WFH Options
Kioni Talent
A STEM degree (or equivalent qualification) Evidence of your passion for technology — whether through personal projects, internships, open-source contributions, or hackathons Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.) Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS A collaborative mindset and eagerness to be part of a growing team Why Join? Work with a More ❯
Posted:

Graduate / Junior Software Engineer – Mission-Led Start-Up – £35k–£50k + Benefits

London Area, United Kingdom
Hybrid / WFH Options
Kioni Talent
A STEM degree (or equivalent qualification) Evidence of your passion for technology — whether through personal projects, internships, open-source contributions, or hackathons Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.) Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS A collaborative mindset and eagerness to be part of a growing team Why Join? Work with a More ❯
Posted:

Graduate / Junior Software Engineer Mission-Led Start-Up 35k50k + Benefits

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Kioni Talent
A STEM degree (or equivalent qualification) Evidence of your passion for technology whether through personal projects, internships, open-source contributions, or hackathons Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.) Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS A collaborative mindset and eagerness to be part of a growing team Why Join? Work with a More ❯
Posted:

Senior Frontend Engineer

london (city of london), south east england, united kingdom
Impala Search
who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of front-end development experience building large-scale web applications. Expertise in React, TypeScript/JavaScript, HTML, and CSS . A strong appreciation for UI/UX design and a passion for delivering exceptional user experiences. Understanding of Design Patterns and SOLID principles . Experience building More ❯
Posted:

Software Developer

London, United Kingdom
Big Red Recruitment Midlands Limited
contribute to the future front-end rebuild, re-platforming their architecture, building microservices in Node.js and TypeScript, and a host of new feature development work. Tech Stack: Node.js, TypeScript, JavaScript MongoDB (NoSQL), REST/GraphQL APIs Azure Cloud, containerised deployments HTML, CSS What we re looking for: 5+ years experience in backend or full stack development Strong knowledge of Node.js More ❯
Employment Type: Permanent
Salary: GBP 50,000 - 87,000 Annual
Posted:

.NET Architect

City of London, London, England, United Kingdom
Hybrid / WFH Options
Noir
successful company! Successful .NET Architect candidates should be able to demonstrate strong knowledge of: .NET 9/.NET Core/ASP.NET MVC, Web API 2, Entity Framework, Microservices, Azure, JavaScript, Angular 19, Bootstrap, Agile and Azure SQL. Training will be provided in any of the technologies you lack, allowing you to turn your technological weaknesses into your greatest strengths! The More ❯
Employment Type: Full-Time
Salary: £80,000 - £100,000 per annum
Posted:

Lead Software Engineer

London, United Kingdom
The Difference Engine
engineering/computer science fundamentals While a polyglot mindset is important, a background in a strongly typed OO language is highly valued (C#, Java), as is experience with React, JavaScript/Typescript on the Front End AWS preferably, though other public cloud experience is accepted Experience of building feature rich products that users love, while ensuring scalability, performance and security More ❯
Employment Type: Permanent
Salary: GBP 120,000 Annual
Posted: