226 to 250 of 1,035 ECMAScript Jobs in London

technical role (SE, SA, consultant, PM), ideally in the SaaS spacePrevious software development experience in one or more of the following areas: Front End: JavaScript, TypeScript, React, Back-End: Java, Ruby, Go, Node, Python, Swift/Objective-CExperience with data formats and data transformationGreat oral and written communication skillsSuperior organisational ...

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 ...

Job ID: 97130412432Posted: 2026-08-21Location: London, England, United KingdomCategory: Technology, Applications Development, ProfessionalCompany: CitiEngineer the future of global finance. At Citi, our Tech team doesn't just support finance – we are helping to ...

Job ID: 97130412432Posted: 2026-08-21Location: London, England, United KingdomCategory: Technology, Applications Development, ProfessionalCompany: CitiEngineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to ...

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 ...

month contract and a market-rate day rate inside IR35. You will build responsive, accessible interfaces using React or Angular, TypeScript/JavaScript, HTML5 and CSS3, integrate with REST APIs, and collaborate with UX, back-end teams and Agile delivery. #J-18808-Ljbffr ...

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. ...

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 ...

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 ...

best training and development packages in the market, all inclusive.My client is based in AylesburyASP.NET MVC, razor, c#, sql, mvc, .net, javascript, greenfield, , data, analytics, api, jquery, episerver ...

Around 2+ years' experience in software engineering, application development or Salesforce development. - Experience with at least one modern programming language such as Java, C#, JavaScript, TypeScript, Python or Apex. - Understanding of software engineering fundamentals including APIs, data modelling, testing, version control and CI/CD. - Knowledge of Salesforce development ...

banking and risk management knowledge to translate business requirements into technical solutions.Technical RequirementsBackend: Core Java, Kotlin, Multithreading, Algorithms, Data Structures, RESTful APIs, gRPCFrontend: ReactJS, JavaScript, TypeScript, Redux/Context API, HTML5, CSS3Cloud & Streaming: AWS (Lambda), Kubernetes, Kafka, FlinkProcess & Security: CI/CD, Agile/Scrum methodologies, security compliance standardsRandstad Technologies ...

/.NET Core • Microsoft SQL Server My client is based in South West London, 2 days a week in the office. Technical Architect, React, Javascript, REST ...

risks. What We're Looking For You'll ideally have experience with: Software engineering using C++, Java or C# Scripting or automation using Python, JavaScript, PowerShell or similar Secure software development and software engineering best practices Source control, debugging, testing and continuous integration Linux and/or Windows operating systems ...

online at your own pace and become job-ready in as little as a few weeks. Our programme includes: Official Training in HTML, CSS, JavaScript, and React.js Official AWS certification Official Microsoft Azure certification [NH1] 30+ hands-on coding projects to build your portfolio Interactive tools including GitHub and real ...

system/software development projects in a structured environmentKnowledge of architectural development patterns such as IoC, ORM, and MVC/MVVMHTML5/CSSSome JavaScript/jQuery and related client-side frameworks,Web Services/WCF/NHibernateSQL Server/T-SQLExperience in a variety of software development approaches and methodologies ...

broader software engineering background.Essential experience includes:Hands-on experience with Google Cloud Platform (GCP)Strong programming skills in at least one of: Python, JavaScript, React, React Native or SQLExperience building and deploying cloud-based applications (GCP preferred)Experience working with large or complex datasetsFamiliarity with modern DevOps practices including ...

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 ExperienceCloud experience with containerization (Docker, Kubernetes), Database (Relational and NoSQL), Messaging (RabbitMQ), Repository (BitBucket), or Helm Charts would be highly regarded ...

commitment to thorough code quality.Desirable skills: We would love to hear from you if you also have experience in multi-threaded application development, JavaScript front-end frameworks like React, network programming (TCP/UDP), or distributed version control systems like Git or PlasticSCM.What is on Offer: Our client believesin supporting ...

Capabilities, and Skills: Experience with Java and Oracle Familiarity with messaging platforms such as RMQ and Kafka Expertise in Kubernetes Proficiency in ReactJS and JavaScript Functional knowledge of FX or Dervis Settlements domain If you’re looking for a place where your skills are valued and your contributions make ...

commitment to thorough code quality. Desirable skills: We would love to hear from you if you also have experience in multi-threaded application development, JavaScript front-end frameworks like React, network programming (TCP/UDP), or distributed version control systems like Git or PlasticSCM.What is on Offer: Our client believesin ...

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 ...

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 ...

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 ...

production incidents promptly and effectively.Understand customer needs and address issues with empathy and a sense of urgency.Required SkillsExcellent proficiency in PythonExperience with TypeScript or Javascript, and Rust would be a plusStrong command of a typed, object-oriented programming language.Deep knowledge of software methodologies, tools, and common architectural patterns.Passion for working ...