101 to 125 of 469 JavaScript Jobs in London

Senior Full Stack Engineer

Location
Greater London, England, United Kingdom
with Python in a web application context. You have some experience with web frameworks like FastAPI, Django or Flask. We use FastAPI. Experience with Javascript/Typescript and a modern JS framework such as React, Angular or Vue.js. We generally use React & NextJS Strong engineering principles & practices: design patterns, testing ...

Lead Software Engineer

Location
Greater London, England, United Kingdom
Strong core programming skills in either (or both!): Server‐side languages such as C++, Java, Rust or Python Front‐end development in TypeScript or JavaScript, using frameworks such as Angular or React Several years of software engineering experience in industry Some history of managing other engineers A forward‐leaning ...

Senior Sales Engineer

Location
Greater London, England, United Kingdom
hands‐on experience in technical presales, solution engineering, technical consulting, or an application developer role. Technical Fluency: Proficient with modern web technologies (e.g., JavaScript, Python, Node.js), HTML/CSS, REST APIs, and utilising webhooks. AI Expertise: Practical understanding of AI applications, including utilising LLM‐powered features, prompt engineering , and automated ...

Principal Software Engineer / Principal AI Engineer

Location
Greater London, England, United Kingdom
problem, extracting a defined spec, and prioritises shipping validated outcomes over perfect solutions, moving pilots to production at pace. Languages: Python, Java, TypeScript/JavaScript, SQL and relevant AI SDKs. Leadership and delivery management: Plans and sequences work, manages scope, dependencies and priorities, removes blockers, and drives delivery to keep ...

Senior Sales Engineer

Location
Greater London, England, United Kingdom
hands-on experience in technical presales, solution engineering, technical consulting, or an application developer role.* ## Technical Fluency: Proficient with modern web technologies (e.g., JavaScript, Python, Node.js), HTML/CSS, REST APIs, and utilising webhooks.* ## AI Expertise: Practical understanding of AI applications, including utilising LLM-powered features, prompt engineering ...

Senior Software Engineer / Senior AI Engineer

Location
Greater London, England, United Kingdom
SDLC, TDD and code review. Data: Working with relational, columnar and vector stores, grounded in sound data-modelling principles. Languages: Python, Java, TypeScript/JavaScript, SQL and relevant AI SDKs. Communication: Clear written and verbal communication with technical peers and stakeholders. Measurement: Instrumenting solutions to capture usage, productivity and quality ...

Senior Technical Architect

Location
Greater London, England, United Kingdom
awareness of emerging Agentic Commerce concepts and standards (ACP, AP2, A2A). Software Engineering & API Design: Strong development background (ideally TypeScript/JavaScript) coupled with robust API design, documentation, and versioning experience. DevOps & Quality Automation: Infrastructure-as-Code (Terraform/CDK/CloudFormation), CI/CD pipelines, and a strict ...

Senior AI Engineer

Hiring Organisation
Aimtech Recruitment Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
role is Hybrid and requires onsite attendance in Central London 23 days per week. Technical Skills C#, ASP.NET Core, Entity Framework Python, FastAPI JavaScript, TypeScript React or Angular REST APIs, Swagger/OpenAPI SQL Server, PostgreSQL, NoSQL and vector databases Azure App Services, Azure Functions, API Management Docker, Kubernetes … advantageous Key Responsibilities Design, develop, and maintain scalable full stack applications across cloud and web technologies Build responsive front-end applications using modern JavaScript frameworks such as React or Angular Develop secure and scalable back-end services, APIs, and integrations using .NET, Python, and Azure services Design and implement ...

Software Engineer - Global Music Tech & APIs

Location
Greater London, England, United Kingdom
write clean, tested code, design distributed systems and microservices, and work with GraphQL/REST APIs, SQL/NoSQL, and AWS. Strong Python/JavaScript/TypeScript and React experience in an agile environment is essential. #J-18808-Ljbffr ...

Web Developer Trainee

Hiring Organisation
ITOL Recruit
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£30,000 - £45,000 per annum
move forward. Step 2 - Online Training The second step includes a selection of more advanced courses to get you up to speed. React js JavaScript JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python is highly versatile. ...

Full Stack Developer

Hiring Organisation
Hays
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400.0 - £410.0 per day + up to £410 pd (Inside IR35)
large, complex organisation Ability to work onsite 4 days per week Technical expertise in Python (Django, Flask frameworks) Demonstrable skills in React, JavaScript (Vanilla) and Node.js Working knowledge of API integration and workflow automation SQL (Database Management) and Data Integration skills Azure Cloud deployment YAML pipeline experience Familiarity with Azure ...

Full Stack Developer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£400.00 - £410.00 per day
customer. Key Requirements:· Proven Full Stack Development experience in a large, complex organisation· Technical expertise in Python (Django, Flask frameworks)· Demonstrable skills in React, JavaScript (Vanilla) and Node.js· Working knowledge of API integration and workflow automation· SQL (Database Management) and Data Integration skills· Azure Cloud deployment· YAML pipeline experience· Familiarity ...

QA Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £75,000 per annum
experience Expertise in API and UI testing Experience with Playwright, Selenium, or similar tools Knowledge of Java or Kotlin Strong understanding of HTML, CSS, JavaScript, and SQL Experience with CI/CD pipelines and Agile environments Comfortable using AI tools within an engineering workflow What They Offer Salary ...

Senior Solution Architect

Location
London, United Kingdom
complex platforms. Active SC Clearance Proven experience in technology modernisation and legacy-to-cloud migration paths. Core tech stack: .NET/.NET Core , Python , JavaScript/TypeScript (Vue.js, React) . AWS Managed Services (RDS, SQS, DynamoDB, OpenSearch, ECR) & AWS Well-Architected Framework. Terraform (IaC) and Docker at scale. Identity, authentication ...

Web Application Support Engineer (React, ASP.NET)

Hiring Organisation
Pontoon
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £416/day
expertise is required Proven experience in web application support, ideally within the financial or corporate settings. Strong understanding of web technologies, including HTML, CSS, JavaScript, C# and relevant frameworks. Familiarity with server environments and database management systems. Excellent problem-solving skills and the ability to work under pressure. Strong communication ...

Web Application Support Engineer

Hiring Organisation
The Adecco Group
Location
London Area, United Kingdom
expertise is required Proven experience in web application support, ideally within the financial or corporate settings. Strong understanding of web technologies, including HTML, CSS, JavaScript, C# and relevant frameworks. Familiarity with server environments and database management systems. Excellent problem-solving skills and the ability to work under pressure. Strong communication ...

Web Application Support Engineer (React, ASP.NET)

Hiring Organisation
Pontoon
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£400.00 - £416.00 per day
expertise is required Proven experience in web application support, ideally within the financial or corporate settings. Strong understanding of web technologies, including HTML, CSS, JavaScript, C# and relevant frameworks. Familiarity with server environments and database management systems. Excellent problem-solving skills and the ability to work under pressure. Strong communication ...

QA Lead

Hiring Organisation
Be-IT Resourcing
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£0 per annum
working with API testing tools and automation. Ability to coach, mentor and develop other QA professionals. Strong stakeholder management and communication skills. Familiarity with JavaScript, TypeScript, C# or comparable languages. Experience working within Agile delivery environments. Nice to Have Exposure to Tosca. Experience within financial services, wealth management or other ...

Senior Customer Solutions Engineer, RCS Business Messaging

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
Engineering, Computer Science, a related field, or equivalent practical experience. 6 years of experience working with client-side web technologies (e.g., HTML, CSS, JavaScript, or HTTP). 6 years of experience coding with one or more programming languages (e.g., Java, C/C++, Python). Experience troubleshooting technical issues ...

Senior Customer Solutions Engineer, RCS Business Messaging

Location
Westminster, West End, United Kingdom
Engineering, Computer Science, a related field, or equivalent practical experience. 6 years of experience working with client-side web technologies (e.g., HTML, CSS, JavaScript, or HTTP). 6 years of experience coding with one or more programming languages (e.g., Java, C/C++, Python). Experience troubleshooting technical issues ...

Founding Software Engineer - Health Technology

Location
Greater London, England, United Kingdom
Early-stage career growth as the business scales. Must-Have Strong commercial experience developing full stack web applications. Excellent knowledge ofTypeScript, React and modern JavaScript frameworks. Experience buildingbackend services using Python or similar technologies. Familiarity with cloud platforms, APIs and relational databases. Strong understanding of software architecture, security and engineering ...

AI Workplace Solution Architect – Microsoft 365, AI

Location
Greater London, England, United Kingdom
controls Hands-on architectural experience with Power Platform, including Power Apps, Power Automate, Power BI Desktop, and Microsoft Dataverse Expertise in PowerShell, PnP, Python, JavaScript, C#, JSON, Power Query (DAX), REST APIs, and GraphQL Experience with Microsoft Dataverse, Microsoft SQL, MySQL, and AI-driven data analytics Experience designing cross-tenant ...

Senior Full-Stack Engineer

Location
Greater London, England, United Kingdom
language-agnostic when assessing new engineers, familiarity with the following is a plus: C# (latest), .NET 10, EF Core, SQL Server TypeScript/JavaScript, SCSS/CSS, HTML/Razor ML.NET, Elasticsearch, AWS (S3/Route53/EC2/CloudFront) Infrastructure as Code (Terraform) Continuous Deployment #J-18808-Ljbffr ...

Embedded Software Design Engineer

Location
Sutton In Ashfield, South West London, United Kingdom
Studio .NET/MFC Visual Basic Windows CE 5.0/CE 6.0 ARM9, 8051, PIC and x86 SQL Assembler RTOS Desirable experience includes TypeScript, JavaScript, HTML and CSS for web application development. You should also have knowledge or experience of fault analysis, unit and integration testing, Factory Acceptance Testing, site ...

Senior Technology Manager – SaaS Solutions & Client Delivery

Hiring Organisation
J&J Search
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£145,000 - £165,000 per annum
engineers, consultants and client technology teams. Exposure to technologies and concepts such as the following would be advantageous: AWS | SaaS | APIs | Java | Spring Boot | JavaScript | Node.js | Docker | Kubernetes | CI/CD | Cloud Architecture | Microservices | Systems Integration The ability to understand the architecture, challenge technical decisions and communicate complex technology clearly ...