ECMAScript Jobs in London

176 to 200 of 1,183 ECMAScript Jobs in London

Senior Java Analyst Developer / Technical Consultant

London, UK
Hybrid / WFH Options
Quant Capital
full-stack experience as Senior Developer around digital applications, software engineering, microservices and cloud. This could include Core Java, Spring Boot, Hibernate/JPA and UI using React, Ember, JavaScript or HTML. FIX Experience Cloud experience with containerization (Docker, Kubernetes), Database (Relational and NoSQL), Messaging (RabbitMQ), Repository (BitBucket), or Helm Charts would be highly regarded (not all necessary). Good More ❯
Employment Type: Full-time
Posted:

Senior Java Analyst Developer / Technical Consultant

City of London, London, United Kingdom
Hybrid / WFH Options
Quant Capital
full-stack experience as Senior Developer around digital applications, software engineering, microservices and cloud. This could include Core Java, Spring Boot, Hibernate/JPA and UI using React, Ember, JavaScript or HTML. FIX Experience Cloud experience with containerization (Docker, Kubernetes), Database (Relational and NoSQL), Messaging (RabbitMQ), Repository (BitBucket), or Helm Charts would be highly regarded (not all necessary). Good More ❯
Posted:

Cloud & AI Solution Engineer - Software, Development Tools and AI

London, United Kingdom
Microsoft
years of technical pre-sales or technical consulting experience - OR equivalent experience - Experience engaging enterprise development teams, including developers, architects, and technical decision makers. - Proficiency in modern languages like JavaScript/TypeScript, Python, C#, or Java, and frameworks such as .NET, Node.js, or React. - Hands-on expertise with GitHub, Visual Studio Code, CI/CD, DevOps, and platform engineering (e.g. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full Stack Developer

City of London, London, United Kingdom
Alexander Associates Technical Recruitment
involving large datasets and workflow automation. What We’re Looking For 3+ years of experience building full-stack applications in production environments. Strong proficiency in: Backend : Python, Django Frontend : JavaScript, React, Next.js Version Control : Git Ability to design and maintain performant, data-heavy backend systems with external API integrations. Experience developing responsive UIs that perform well across devices and browsers. More ❯
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Full Stack Developer

London Area, United Kingdom
Alexander Associates Technical Recruitment
involving large datasets and workflow automation. What We’re Looking For 3+ years of experience building full-stack applications in production environments. Strong proficiency in: Backend : Python, Django Frontend : JavaScript, React, Next.js Version Control : Git Ability to design and maintain performant, data-heavy backend systems with external API integrations. Experience developing responsive UIs that perform well across devices and browsers. More ❯
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Solution Architect with Mobile Architect

City of London, London, United Kingdom
Hellowork Consultants
Zereheight for design systems • Experience creating automation processes for component governance • In-depth knowledge of design patterns, UI/UX principles, and front-end technologies such as HTML, CSS, JavaScript, and BeastNative. • Strong understanding of software architecture principles. • Experience with version control systems (e.g., Git), package managers, and dependency management tools. • Excellent communication and interpersonal skills, with the ability to More ❯
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Solution Architect with Mobile Architect

London Area, United Kingdom
Hellowork Consultants
Zereheight for design systems • Experience creating automation processes for component governance • In-depth knowledge of design patterns, UI/UX principles, and front-end technologies such as HTML, CSS, JavaScript, and BeastNative. • Strong understanding of software architecture principles. • Experience with version control systems (e.g., Git), package managers, and dependency management tools. • Excellent communication and interpersonal skills, with the ability to More ❯
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Cloud DBA

London, United Kingdom
BNB Chain
and monitoring tools. Knowledge of containerization and orchestration technologies (Docker, Kubernetes). Familiarity with database security practices and compliance standards. Scripting and automation skills using languages like Python, Bash, JavaScript or similar. Familiarity with version control systems (Git) and CI/CD pipelines. Strong problem-solving skills and the ability to work effectively in a fast-paced environment. Excellent communication More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Quality Engineering Lead

London, United Kingdom
Applicable Limited
technical and non-technical audiences Knowledge of GenAI & QE developments Experience building advanced automation frameworks using object-oriented and scripted languages Proficiency in at least two of the following: JavaScript/TypeScript, Java, C#, Python Strong understanding of OOP principles Experience working in Agile teams, designing automated tests, and ensuring test coverage Ability to collaborate with developers and understand CI More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Website Manager & Full Stack Designer

London Area, United Kingdom
Aspect
ll need to be comfortable working across teams and bringing ideas to life quickly in a fast-paced, collaborative environment. Key qualifications include: Technical Skills Proficiency in HTML5, CSS3, JavaScript, and at least one modern framework (e.g. React, Vue.js, Angular) Experience with back-end development using Node.js, PHP, or Python Understanding of database technologies like MySQL, PostgreSQL, or MongoDB Familiarity More ❯
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Website Manager & Full Stack Designer

City of London, London, United Kingdom
Aspect
ll need to be comfortable working across teams and bringing ideas to life quickly in a fast-paced, collaborative environment. Key qualifications include: Technical Skills Proficiency in HTML5, CSS3, JavaScript, and at least one modern framework (e.g. React, Vue.js, Angular) Experience with back-end development using Node.js, PHP, or Python Understanding of database technologies like MySQL, PostgreSQL, or MongoDB Familiarity More ❯
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Quality Engineer

London, United Kingdom
CFP Energy (UK) Ltd
Proficiency in using API testing tools like Postman, Insomnia, or similar tools to ensure robust API integrations. Programming Skills: Proficient in modern programming languages such as Python, C#, or JavaScript, with hands-on experience in writing automated tests. Collaboration & Communication: Excellent communication skills with the ability to collaborate effectively with developers, product managers, and stakeholders. Problem-Solving: A proactive, problem More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Technical Lead

City of London, London, United Kingdom
Hybrid / WFH Options
IPS Group
is highly desirable. At least 5 years’ experience developing enterprise applications using the Microsoft technology stack, including: Proficiency in C# .NET and SQL Server. Solid working knowledge of React, JavaScript, GraphQL, REST and SOAP APIs. A deep understanding of tiered application architectures, cloud infrastructure, and serverless technologies. Hands-on experience with modern UI state management and modular development. Strong background More ❯
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Technical Lead

London Area, United Kingdom
Hybrid / WFH Options
IPS Group
is highly desirable. At least 5 years’ experience developing enterprise applications using the Microsoft technology stack, including: Proficiency in C# .NET and SQL Server. Solid working knowledge of React, JavaScript, GraphQL, REST and SOAP APIs. A deep understanding of tiered application architectures, cloud infrastructure, and serverless technologies. Hands-on experience with modern UI state management and modular development. Strong background More ❯
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Software Engineer III - Senior Associate - Salt Design System

Westminster Abbey, England, United Kingdom
J.P. MORGAN-1
Preferred qualifications, capabilities, and skills Preferable experience in building reusable UI components or working with design systems. Familiarity with modern front-end technologies (e.g. NextJS, Remix) Asynchronous operations in Javascript (maybe using libraries such as Axios, RxJS) Familiarity with solving UI state management Already contributes to an Open Source project Clean Code advocate An understanding of UI accessibility concerns Familiarity More ❯
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Full Stack Developer

London, United Kingdom
Native Design
developer we hope is reading this: Full stack: You can build complex mobile and web applications, with solid experience in iOS/Android, Angular, HTML5, CSS, Node.js, React, Python, JavaScript, and databases like MySQL. Adaptable: You love to learn and develop with unfamiliar technologies, swiftly picking up new languages and frameworks, be it C++, C#, or new languages like Rust. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Front End Developer

Westminster, London
Hybrid / WFH Options
Parliamentary Digital Service
on Rails, MVC and Web API, SQL/SQL Server with experience in constructing databases, creating RESTful APIs, Git, code abstraction, debugging and systems analysis, HTML5, CSS/SASS & Javascript and TypeScript, familiarity with a frontend framework such as Angular/React/Vue (Angular preferred). you can collaborate with others when necessary to review specifications and use these More ❯
Employment Type: Permanent
Salary: £41,340 - £47,975
Posted:

Technical Lead (DV Security Clearance)

London
Hybrid / WFH Options
CGI
ability and enthusiasm to learn new technologies quickly. Desirable Skills: • Experience of systems engineering and systems integration. • Experience of contributing to bids/proposals. • Front-end development expertise with JavaScript and the REACT/MaterialUI framework. #LI-JS2 Together, as owners, let's turn meaningful insights into action. Life at CGI is rooted in ownership, teamwork, respect and belonging. Here More ❯
Employment Type: Permanent
Posted:

Technical Team Lead Engineering London

London, United Kingdom
Fliplet
will work closely with senior management, as well as all the other teams, to align technology with business needs. The ideal candidate will have expertise in AI, full-stack JavaScript, AWS, Cordova, iOS & Android development and security while fostering a culture of collaboration, innovation, and technical excellence. This is a hands-on leadership role, requiring someone who can actively take More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer

City of London, London, United Kingdom
Stealth AI Startup
on inference and evaluation pipelines. You Might Be a Great Fit if You Have strong commercial software-engineering experience, with a fluency in Python and comfortable in TypeScript/JavaScript . Have built and operated data-intensive systems (batch & streaming) in a cloud environment (AWS, GCP, or Azure). Know your way around relational, columnar, and KV/graph databases More ❯
Posted:

Senior Software Engineer

London Area, United Kingdom
Stealth AI Startup
on inference and evaluation pipelines. You Might Be a Great Fit if You Have strong commercial software-engineering experience, with a fluency in Python and comfortable in TypeScript/JavaScript . Have built and operated data-intensive systems (batch & streaming) in a cloud environment (AWS, GCP, or Azure). Know your way around relational, columnar, and KV/graph databases More ❯
Posted:

Software Engineer (Full Stack)

London, United Kingdom
Urban Jungle Services Ltd
may be your first commercial role, but we're looking for examples of where you've used one or more of the following languages in academic or personal projects: - Javascript (we work with Angular), Python or CSS. You're excited to learn more about: - Front-End/UX design and prototyping - Linux, Docker, AWS, SQL You get a thrill out More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Web Engineering Lead

London, United Kingdom
Hybrid / WFH Options
Moneybox
commercial experience, or equivalent. Experience in managing and leading a team. Able to support delivery teams to implement projects and support members personal development. Strong knowledge of HTML, CSS & Javascript/Typescript and modern web standards Experience in creating rich user interfaces and custom components. Ensuring user experience & quality is at the forefront of everything you do. Experience working with More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer (OfficeJS/React)

London, United Kingdom
Hybrid / WFH Options
Cornerstone VC
in Computer Science or a related field (or equivalent work experience). Proven experience in software development, especially in building applications for the Office.js framework. Proficiency in React, Typescript, JavaScript, HTML, CSS, and related technologies. Familiarity with Microsoft Office Suite, with a focus on Microsoft Word. Strong problem-solving and debugging skills. Excellent communication and collaboration abilities. Knowledge of software More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Team Lead Web

London, United Kingdom
Hybrid / WFH Options
MediSolution
a Software Development Team Lead (Web) on a full-time, permanent, remote-working basis, in the UK. We are seeking a skilled senior Front-End developer with expertise in Javascript, Typescript & React to enhance products and services. This role will also contain line management responsibilities of a small team (3-4 people). The employee will play a pivotal role More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted: