Permanent ECMAScript Jobs in London

1 to 25 of 827 Permanent ECMAScript Jobs in London

Azure Full Stack Engineer

London, United Kingdom
IBM Computing
An advanced degree is a plus. Professional experience as a Full Stack Developer. Extensive experience in Azure cloud services and related technologies. Proficient in front-end technologies (HTML, CSS, JavaScript, React or Angular) and back-end languages (C#, Java, Python, etc.). Solid understanding of RESTful APIs and microservices architecture. Experience with version control systems (Git). Familiarity with Agile More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Python Developer

London, United Kingdom
Hippo Digital Limited
able to articulate in both technical/non-technical terms depending on audience The full development lifecycle delivering user-centred digital solutions Full stack development experience using HTML, CSS & JavaScript JavaScript library and framework experience is preferable - Node, React, Angular Containerisation experience - Docker or Kubernetes or similar Experience of Microservices design and architecture Restful API Services experience Working within agile More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

AWS Full Stack Developer

London, United Kingdom
IBM Computing
a plus. Professional experience as a Full Stack Developer. Extensive experience in AWS cloud services, including EC2, S3, Lambda, RDS, DynamoDB, etc. Proficient in front-end technologies (HTML, CSS, JavaScript, React or Angular) and back-end languages (Java, Python, Node.js, etc.). Solid understanding of RESTful APIs and microservices architecture. Experience with version control systems (Git). Familiarity with Agile More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Fullstack Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Reed.co.uk
Minimum 8 years of commercial 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 Tools such as Windsurf, Aider More ❯
Employment Type: Full-Time
Salary: £80,000 - £90,000 per annum
Posted:

Senior Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Reed.co.uk
Minimum 8 years of commercial 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 Tools such as Windsurf, Aider More ❯
Employment Type: Full-Time
Salary: £80,000 - £90,000 per annum
Posted:

Senior Software Engineer (London)

Whetstone, Greater London, UK
Blue Yonder
React , TypeScript , and GraphQL to deliver user-friendly, performant web interfaces. Build scalable client- and server-side functionality in a full-stack context, often working across the Python and JavaScript/TypeScript boundary . Collaboration & Agile Development Participate in all phases of the product development lifecycle including grooming, planning, standups, retrospectives, and reviews. Work with product managers and stakeholders to More ❯
Employment Type: Full-time
Posted:

Senior Software Engineer (London)

Whetstone, Greater London, UK
Blue Yonder
React, TypeScript, and GraphQL to deliver user-friendly, performant web interfaces. Build scalable client- and server-side functionality in a full-stack context, often working across the Python and JavaScript/TypeScript boundary. Collaboration & Agile Development Participate in all phases of the product development lifecycle including grooming, planning, standups, retrospectives, and reviews. Work with product managers and stakeholders to translate More ❯
Employment Type: Full-time
Posted:

Head of Application Engineering

London, United Kingdom
Pantheon
the Scrum framework and utilising Azure DevOps to facilitate that work. Proficient in programming languages and tooling as follows: NET Core/.NET Framework, C# HTML/CSS/Javascript TypeScript, AngularJS, KnockoutJS QA tooling such as - Selenium, Playwright, Spectflow, Reqcnroll Azure DevOps, Git, Deployment Pipelines, Terraform Massaging Queues, API's: SOAP & REST Demonstrated expertise in building REST APIs for More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Head of Application Engineering (London)

Wandsworth, Greater London, UK
Pantheon
the Scrum framework and utilising Azure DevOps to facilitate that work. Proficient in programming languages and tooling as follows: NET Core/.NET Framework, C# HTML/CSS/Javascript TypeScript, AngularJS, KnockoutJS QA tooling such as - Selenium, Playwright, Spectflow, Reqcnroll Azure DevOps, Git, Deployment Pipelines, Terraform Massaging Queues, APIs: SOAP & REST Demonstrated expertise in building REST APIs for external More ❯
Employment Type: Full-time
Posted:

Head of Application Engineering London, Greater London, England, United Kingdom

London, United Kingdom
Pantheon
the Scrum framework and utilising Azure DevOps to facilitate that work. Proficient in programming languages and tooling as follows: NET Core/.NET Framework, C# HTML/CSS/Javascript TypeScript, AngularJS, KnockoutJS QA tooling such as - Selenium, Playwright, Spectflow, Reqcnroll Azure DevOps, Git, Deployment Pipelines, Terraform Massaging Queues, API's: SOAP & REST Demonstrated expertise in building REST APIs for More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer (London)

London, UK
Hybrid / WFH Options
Edgefolio
3+, Django Framework and its ORM Experience with Django REST Framework and writing APIs Able to write clean HTML (server-side templating in Django/Jinja) Basic CSS and JavaScript (basic knowledge of ReactJS is a plus) Familiarity with event-driven programming in Python (Django + Celery) Experience in developing secure web applications Experience in writing testable code - Unit/ More ❯
Employment Type: Full-time
Posted:

Full Stack Java Developer for Client Team

London, United Kingdom
Hybrid / WFH Options
Validsoft
to systems analysis and development. Application frameworks such as Spring Boot/Cloud. Microservice Architectures. Cloud Platforms such as AWS, GCP or Azure. Web technologies including HTML, CSS, advanced Javascript, Web Services. Continuous Integration/Continuous Delivery. BDD, pair programming. Agile development methods such as Scrum or Kanban. REST API development and/or consumption. Relational databases MySQL, SQL Server More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Product Engineer

London, United Kingdom
Acquired Payments
What you'll bring Skills & Experience Experience in software engineering, with a strong focus on delivering incremental value through high-quality, scalable, and maintainable solutions. Proficiency in C#, .NET, JavaScript, and TypeScript (required). Proficiency in front-end development using frameworks like React, Vue.js, or Angular (preferred but not required). Proficiency with PHP (desirable) Experience working with cloud infrastructure More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Digital Developer (Vue/React, .Net Core, Azure)

London, United Kingdom
Hybrid / WFH Options
Stott & May Professional Search Limited
project engagement. Principal Accountabilities ? Design, develop and deploy full stack cloud-native applications using .NET, C# and Microsoft Azure services. ? Implement responsive, accessible user interfaces using HTML, CSS, and JavaScript frameworks such as Vue.js, Nuxt.js and React. ? Participate in all phases of the software development lifecycle and collaborate with cross-functional teams to translate requirements into scalable technical solutions. ? Write More ❯
Employment Type: Permanent, Work From Home
Salary: £80,000
Posted:

Senior Software Engineer Engineering London

London, United Kingdom
Hybrid / WFH Options
Edgefolio Group
3+, Django Framework and its ORM Experience with Django REST Framework and writing APIs Able to write clean HTML (server-side templating in Django/Jinja) Basic CSS and JavaScript (basic knowledge of ReactJS is a plus) Familiarity with event-driven programming in Python (Django + Celery) Experience in developing secure web applications Experience in writing testable code - Unit/ More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

COE Team- Full Stack Engineer Java, Angular, React

London, South East, England, United Kingdom
Hybrid / WFH Options
Become
translate business requirements into technical solutions Required Skills and Experience Strong hands-on experience with Java , Spring Boot , and RESTful API development Proficiency in Angular or React , along with JavaScript/TypeScript, HTML5, and CSS3 Experience delivering full stack solutions in enterprise-grade environments Familiarity with CI/CD pipelines , containerisation (e.g., Docker), and cloud platforms (e.g., AWS, Azure) Experience More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Fullstack Software Engineer (Brahma)

London, United Kingdom
DNEG Group
experience in fullstack software development. Strong expertise in server-side programming languages (we use Python). Proven experience designing and implementing RESTful APIs and microservices architectures. Proficiency in modern JavaScript/TypeScript and at least one major frontend framework (React, Vue.js, or Angular). Deep understanding of database design, optimisation, and management (PostgreSQL, Neo4j, Redis). Experience with cloud platforms More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Developer (Full Stack)

London, United Kingdom
Hybrid / WFH Options
Experian Group
across 32 countries. Our corporate headquarters are in Dublin, Ireland. Learn more at Experience and Skills Technical Skills Experience as a Software developer/engineer or relevant functions. Using Javascript and Typescript with NodeJS, and some Python Familiarity with React. Working knowledge of .NET, C# and SQL • DevOps - IaC using Terraform, Jenkins Agile familiarity is a must. Working with Snowflake More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full Stack Application Developer

London, United Kingdom
IBM Computing
your deep expertise in full-stack cloud development Required technical and professional expertise Proven, and current hands on advanced full-stack development skills, including both front-end (HTML, CSS, JavaScript) and back-end (e.g., Node.js, Python, Ruby, lambda S3 DynamoDB etc) Extensive experience with the AWS cloud platform Proficient in using version control systems (e.g., Git) and experience with CI More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Development Engineer II

London, United Kingdom
Expedia, Inc
great products. While we don't believe in rigid checklists, experience or interest in the following areas is a plus: Strong programming skills in modern languages ( Java, Kotlin, Python, JavaScript , etc.) Experience with frontend frameworks like React, Vue , or Angular Understanding of backend technologies and RESTful APIs Knowledge of cloud platforms such as AWS , GCP , or Azure Familiarity with SQL More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Staff Android Engineer

London, United Kingdom
Hybrid / WFH Options
WeAreTechWomen
/iOS GraphQL Microservice Architectures Docker, Kubernetes, and cloud platforms such as AWS, GCP or Azure Understanding of UX principles HTML, CSS, and related web technologies Experience with modern JavaScript libraries and tooling, such as React, Redux, Webpack Any server side development languages such as Java/Kotlin Additional Information: The application form consists of an online assessment, CV upload More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior/Principal Software Engineer (PHP, MySQL, and AWS) (London)

London, UK
Arrive
for the team; offering mentoring and support to your team-mates. Requirements Highly skilled and proficient coding in PHP, with strong skills in adjacent areas such as TypeScript, React, JavaScript or Python. A desire and willingness to learn other languages in particular Golang Proving technical leadership and direction to your team and contributing to the wider engineering organisation. Deep technical More ❯
Employment Type: Full-time
Posted:

Full stack Java REACT Tech Lead (London)

Whetstone, Greater London, UK
Barclays
as a as Full stack Java REACT Tech Lead, you should have the following skills/experience: Extensive front-end technology and back-end technology skills using HTML, CSS, JavaScript, React JS, Redux, Node, test framework (e.g., Jest), Java, SpringBoot, JPA, Hibernate, Junit, Mockito, microservices. Strong experience with SQL (MS SQL preferred), cloud technology and messaging tools as well as More ❯
Employment Type: Full-time
Posted:

Register Your Interest - Technical Placement - Space, Defence & Intelligence

London, United Kingdom
Industry Placements
programming, problem-solving, data analysis or systems development would be beneficial for this role. Including any of the following Programming Languages: Exposure to languages such as: • C++, Java, Python, JavaScript, C# Systems & Tools: Knowledge of or experience with any of the following: Linux/Unix operating systems Cloud Technologies (AWS, Azure, Google Cloud) DevOps tools (e.g., Docker, Kubernetes) Version Control More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Register Your Interest - Technical Placement - Space, Defence & Intelligence

Hounslow, London, United Kingdom
Industry Placements
programming, problem-solving, data analysis or systems development would be beneficial for this role. Including any of the following Programming Languages: Exposure to languages such as: • C++, Java, Python, JavaScript, C# Systems & Tools: Knowledge of or experience with any of the following: Linux/Unix operating systems Cloud Technologies (AWS, Azure, Google Cloud) DevOps tools (e.g., Docker, Kubernetes) Version Control More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted: