ECMAScript Jobs in London

151 to 175 of 1,358 ECMAScript Jobs in London

Automation Test Engineer

London, England, United Kingdom
Hybrid / WFH Options
DataCareers
working. What you'll bring Essential skills include strong experience in test automation with an ETRM platform with as many of the following as possible: Programming & Scripting: Python, Java, JavaScript, C++, Scriban Web Technologies: RESTful APIs, HTTP, JSON, HTML, CSS, Node.js Databases: SQL Server, MySQL, PostgreSQL, MongoDB Tools & Frameworks: Git, Docker, Jenkins, Kubernetes, Agile (Scrum & Kanban), JIRA, Pytest, Powershell Operating More ❯
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Senior D365 Developer - 12 month FTC

London Area, United Kingdom
Shape IT Recruitment
resilient solutions that make a real difference for colleagues and customers alike. What You’ll Do: Translate business requirements into working, user-focused solutions Design and develop C#, plugins, JavaScript, Power Apps, Power Automate, SSIS, and SSRS solutions Provide technical guidance and mentorship to junior developers Participate in SCRUM ceremonies and influence platform architecture Ensure solutions are aligned with strategy More ❯
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Senior D365 Developer - 12 month FTC

City of London, London, United Kingdom
Shape IT Recruitment
resilient solutions that make a real difference for colleagues and customers alike. What You’ll Do: Translate business requirements into working, user-focused solutions Design and develop C#, plugins, JavaScript, Power Apps, Power Automate, SSIS, and SSRS solutions Provide technical guidance and mentorship to junior developers Participate in SCRUM ceremonies and influence platform architecture Ensure solutions are aligned with strategy More ❯
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Senior Developer / Architect - Financial Software

London, United Kingdom
Jump IT Recruitment
C#, ASP.NET, MVC, HTML, CSS, JavaScript, Entity Framework, SQL. Azure Service Bus. C++, FIX protocol, SignalR, RabbitMQ, Azure DevOps. Great new permanent opportunity to join our client-based London area. They are a quality-driven development team focused on delivering a great product. The environment is collaborative with real, in-depth technical expertise in their financial sector. It is a More ❯
Employment Type: Permanent
Salary: £70000 - £90000/annum +Bens+Bonus
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Senior D365 Developer - 12 month FTC

london, south east england, united kingdom
Shape IT Recruitment
resilient solutions that make a real difference for colleagues and customers alike. What You’ll Do: Translate business requirements into working, user-focused solutions Design and develop C#, plugins, JavaScript, Power Apps, Power Automate, SSIS, and SSRS solutions Provide technical guidance and mentorship to junior developers Participate in SCRUM ceremonies and influence platform architecture Ensure solutions are aligned with strategy More ❯
Posted:

Senior D365 Developer - 12 month FTC

london (city of london), south east england, united kingdom
Shape IT Recruitment
resilient solutions that make a real difference for colleagues and customers alike. What You’ll Do: Translate business requirements into working, user-focused solutions Design and develop C#, plugins, JavaScript, Power Apps, Power Automate, SSIS, and SSRS solutions Provide technical guidance and mentorship to junior developers Participate in SCRUM ceremonies and influence platform architecture Ensure solutions are aligned with strategy More ❯
Posted:

Senior Developer / Architect - Financial Software

London, South East, England, United Kingdom
Jump IT Recruitment Solutions Ltd
C#, ASP.NET, MVC, HTML, CSS, JavaScript, Entity Framework, SQL. Azure Service Bus. C++, FIX protocol, SignalR, RabbitMQ, Azure DevOps. Great new permanent opportunity to join our client-based London area. They are a quality-driven development team focused on delivering a great product. The environment is collaborative with real, in-depth technical expertise in their financial sector. It is a More ❯
Employment Type: Full-Time
Salary: £70,000 - £90,000 per annum
Posted:

Ruby-on-Rails Developer – Remote Within the UK

London, South East, England, United Kingdom
Hybrid / WFH Options
Arden Resourcing Limited
emerging technologies and industry trends and apply them to improve existing processes and applications. Qualifications: Proficient in Ruby-on-Rails framework. Strong knowledge of front-end technologies (HTML, CSS, JavaScript, React/Vue.js). Experience with database systems (MySQL, PostgreSQL) and ORM tools. Familiarity with version control systems (Git) and CI/CD pipelines. Basic understanding of Laravel framework Experience More ❯
Employment Type: Full-Time
Salary: £60,000 - £70,000 per annum
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Senior Software Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
Understanding Recruitment
will I be doing: Design, develop, test, deploy, and maintain robust and scalable backend systems and APIs using Python Build intuitive, performant, and delightful frontend user interfaces using modern JavaScript frameworks like React Work with databases to design schemas, write efficient queries, and ensure optimal performance Contribute to overall system architecture, ensuring scalability, reliability, and security Integrate various platform components More ❯
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Senior Software Engineer

London Area, United Kingdom
Hybrid / WFH Options
Understanding Recruitment
will I be doing: Design, develop, test, deploy, and maintain robust and scalable backend systems and APIs using Python Build intuitive, performant, and delightful frontend user interfaces using modern JavaScript frameworks like React Work with databases to design schemas, write efficient queries, and ensure optimal performance Contribute to overall system architecture, ensuring scalability, reliability, and security Integrate various platform components More ❯
Posted:

Python Developer

London, United Kingdom
infrastructure. Collaborating with cross-functional teams to bring new ideas to life. Tech stack Strong experience with Python web frameworks (Flask, FastAPI). Skilled in modern frontend development (React, JavaScript, HTML/CSS). Understanding of responsive design, accessibility, and UX best practices. Experience with Docker, AWS, and CI/CD pipelines. Knowledge of Git, version control, and deployment automation. More ❯
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Full-Stack React Developer

City of London, London, England, United Kingdom
Eligo Recruitment
promote best practices, and improve engineering workflows Shape technical strategy and contribute to long-term system improvements Drive code quality, observability, and resiliency across services Tech Stack Frontend : React, JavaScript/TypeScript Backend : Python (FastAPI, Flask, or Django), ideally with geospatial data processing Cloud : AWS (Lambda, ECS, RDS, S3, API Gateway, etc.) DevOps : Docker, CI/CD pipelines, Git Orchestration More ❯
Employment Type: Full-Time
Salary: £90,000 per annum
Posted:

Full Stack Engineer | C#/.NET & React | London

City of London, London, United Kingdom
SGI
.NET technologies, ideally including ASP.NET Core and Web APIs. 3+ years’ experience developing front-end applications using React, or similar frameworks, but React is the strong preference here. Strong JavaScript and CSS skills with an eye for design and UX. Experience with SQL and relational databases such as Oracle, SQL Server, or PostgreSQL. Knowledge of CI/CD principles and More ❯
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Full Stack Engineer | C#/.NET & React | London

London Area, United Kingdom
SGI
.NET technologies, ideally including ASP.NET Core and Web APIs. 3+ years’ experience developing front-end applications using React, or similar frameworks, but React is the strong preference here. Strong JavaScript and CSS skills with an eye for design and UX. Experience with SQL and relational databases such as Oracle, SQL Server, or PostgreSQL. Knowledge of CI/CD principles and More ❯
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Full Stack Engineer | C#/.NET & React | London

london, south east england, united kingdom
SGI
.NET technologies, ideally including ASP.NET Core and Web APIs. 3+ years’ experience developing front-end applications using React, or similar frameworks, but React is the strong preference here. Strong JavaScript and CSS skills with an eye for design and UX. Experience with SQL and relational databases such as Oracle, SQL Server, or PostgreSQL. Knowledge of CI/CD principles and More ❯
Posted:

Full Stack Engineer | C#/.NET & React | London

london (city of london), south east england, united kingdom
SGI
.NET technologies, ideally including ASP.NET Core and Web APIs. 3+ years’ experience developing front-end applications using React, or similar frameworks, but React is the strong preference here. Strong JavaScript and CSS skills with an eye for design and UX. Experience with SQL and relational databases such as Oracle, SQL Server, or PostgreSQL. Knowledge of CI/CD principles and More ❯
Posted:

Junior Developer

London Area, United Kingdom
Hybrid / WFH Options
develop
and well-tested code Collaborate closely with founders, designers, and product leads 💼 Candidate Requirements Strong experience with Typescript (personal projects are okay) Minimum 1 year of commercial experience with JavaScript/Node.js Strong experience with React/Next.js and NestJS Solid understanding of SQL databases and API design Comfortable working in a fast-paced startup environment Excellent communication and problem More ❯
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Junior Developer

City of London, London, United Kingdom
Hybrid / WFH Options
develop
and well-tested code Collaborate closely with founders, designers, and product leads 💼 Candidate Requirements Strong experience with Typescript (personal projects are okay) Minimum 1 year of commercial experience with JavaScript/Node.js Strong experience with React/Next.js and NestJS Solid understanding of SQL databases and API design Comfortable working in a fast-paced startup environment Excellent communication and problem More ❯
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Front End Developer TypeScript React Native

London, South East, England, United Kingdom
Hybrid / WFH Options
Client Server Ltd
strategic advantage. You'll work alongside a talented team contributing ideas, collaborating with designers and prototyping new features. There's a modern tech stack, you'll be mainly using JavaScript/TypeScript and React but will be able to pick new technologies and skills up on the job. Location/WFH: You'll be joining a friendly and supportive team More ❯
Employment Type: Full-Time
Salary: £55,000 - £70,000 per annum
Posted:

Junior Developer

london, south east england, united kingdom
Hybrid / WFH Options
develop
and well-tested code Collaborate closely with founders, designers, and product leads 💼 Candidate Requirements Strong experience with Typescript (personal projects are okay) Minimum 1 year of commercial experience with JavaScript/Node.js Strong experience with React/Next.js and NestJS Solid understanding of SQL databases and API design Comfortable working in a fast-paced startup environment Excellent communication and problem More ❯
Posted:

Junior Developer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
develop
and well-tested code Collaborate closely with founders, designers, and product leads 💼 Candidate Requirements Strong experience with Typescript (personal projects are okay) Minimum 1 year of commercial experience with JavaScript/Node.js Strong experience with React/Next.js and NestJS Solid understanding of SQL databases and API design Comfortable working in a fast-paced startup environment Excellent communication and problem More ❯
Posted:

Software Engineer

London Area, United Kingdom
Hybrid / WFH Options
Cocentric
communication skills – able to work well across disciplines Bonus: experience with identity systems (e.g. Microsoft Entra ID/Azure AD), SSO, or HRIS integration OUR TECH STACK Frontend: React, JavaScript Backend: C#, .Net, Azure Service Fabric, Kubernetes Infrastructure: Azure, Service Fabric, Cosmos DB WHY COCENTRIC Be a key part of a product that’s transforming how the frontline workforce connects More ❯
Posted:

Software Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
Cocentric
communication skills – able to work well across disciplines Bonus: experience with identity systems (e.g. Microsoft Entra ID/Azure AD), SSO, or HRIS integration OUR TECH STACK Frontend: React, JavaScript Backend: C#, .Net, Azure Service Fabric, Kubernetes Infrastructure: Azure, Service Fabric, Cosmos DB WHY COCENTRIC Be a key part of a product that’s transforming how the frontline workforce connects More ❯
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China Technical Graduate Programme - Based in Guangzhou

London Area, United Kingdom
FDM Group
Graduate Programme? Up to 12 weeks of hands-on training in our Skills Lab with expert coaches Learn practical skills such as Object-Oriented Programming, Java, Springboot, React, Python, JavaScript, Git, SQL, cloud platforms, and CI/CD pipelines and AI integrations Make an impact and work on real projects with top global brand Get ongoing support, mentoring & career coaching More ❯
Posted:

China Technical Graduate Programme - Based in Guangzhou

City of London, London, United Kingdom
FDM Group
Graduate Programme? Up to 12 weeks of hands-on training in our Skills Lab with expert coaches Learn practical skills such as Object-Oriented Programming, Java, Springboot, React, Python, JavaScript, Git, SQL, cloud platforms, and CI/CD pipelines and AI integrations Make an impact and work on real projects with top global brand Get ongoing support, mentoring & career coaching More ❯
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