1 to 25 of 92 JavaScript Jobs in the City of London

security Required Skills & Experience: Extensive experience as a Full Stack Engineer with a strong track record in senior or principal-level roles Expertise in JavaScript/TypeScript and modern frontend frameworks (e.g., React, Angular, or Vue) Strong backend development experience (e.g., Node.js, Java, Python, or Go) Proven experience designing ...

architecture decisions and technical strategy Support CI/CD pipelines and cloud infrastructure Mentor developers and promote engineering best practices Tech Stack: Frontend: TypeScript, JavaScript, (React/Angular), HTML5, CSS3 Backend: Python REST APIs Data: MySQL, PostgreSQL, Redis Cloud & DevOps: AWS, Docker, CI/CD, Kubernetes (nice to have) Architecture ...

collaborate within a cross-functional agile team. Required Skills & Experience: Technical Skills Extensive professional software development experience. Front-end: Strong proficiency in React.js , JavaScript/TypeScript, Redux/RTK, hooks, and modern UI patterns and architecture. Micro front-end experience is key having delivered micro front-end architectures, and creating ...

Serverless Service, including Lambda, API Gateway, DynamoDB, S3, SNS, SQS, EventBridge, Kinesis, Node.js, YAML Frontend : React/Next.js, React Native Programming Languages : TypeScript; JavaScript, Python Infrastructure : Terraform, GitHub CI/CD pipelines Responsibilities Provide technical leadership and mentorship to your team. As a Senior Full-stack Software Engineer, you will ...

consulting environment, working closely with architects, designers, product teams and client stakeholders. Key Responsibilities Design and build applications using ASP.NET Core, C# and modern JavaScript frameworks Develop responsive, accessible front-end interfaces using React, Angular or Blazor/Razor Contribute to cloud-native architectures on AWS or Azure Implement modern ...

application development (.NET Core, C#) or winforms/WPF (C#) development. Our client will provide you with training into: .NET 10.0, WPF, MVVM, Prism, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, ASP.NET Core Web API, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and Azure SQL. ...

such as Sitecore, Optimizely, Umbraco, Alterian, Immediacy, Ektron, Kentico, Sitefinity or dotnetnuke. Our client can provide you with industry recognised training in: .NET 10.0, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, ASP.NET Core Web API, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum, Kanban and MongoDB. This ...

manage multiple projects and priorities in a fast-paced environment Technical Skills Power Platform (Power Apps, Power Automate, Power Pages, Power BI) Python, JavaScript, TypeScript, Angular or React ASP.NET Core, Entity Framework, REST APIs, Swagger/OpenAPI SQL Server, PostgreSQL, NoSQL databases, vector databases FastAPI and AI service integrations (OpenAI ...

security clearance is essential. Proven experience as a backend or software engineer delivering production systems. Strong coding ability in Java, Python and/or JavaScript/TypeScript. Solid understanding of backend engineering fundamentals, design patterns and API design. Experience working in Agile teams (e.g. Scrum, Kanban). Strong communication skills ...

enabling data scientists and engineers with Python-based development workflows and tooling Technology Stack: Azure Cloud Services C# (.NET 10) Python React.js and modern JavaScript (ES6+) Snowflake (Data Warehouse) Apache Airflow Terraform dbt SQL Server ...

development • Proven experience migrating SharePoint 2016 on-premise environments to modern SharePoint platforms • Strong expertise in SharePoint Framework (SPFx) development • Proficiency in TypeScript, JavaScript, React, HTML5, and CSS3 • Strong experience with REST APIs and Microsoft Graph integrations • Solid C# and .NET experience for backend and integration development • Experience administering SharePoint ...

design and query optimization Solid understanding of object-oriented programming principles and design Patterns Familiarity with front-end development and integration using HTML and JavaScript Experience with Jenkins and modern CI/CD practices Proficiency in AWS services and infrastructure-as-code using Terraform Strong experience with GitHub for version ...

translate commercial goals into technically sound plans Provide technical leadership on the most complex architectural and performance challenges Job requirements: Strong experience with JavaScript/TypeScript and Java/Kotlin, NestJS or React, and PostgreSQL or MongoDB Hands-on experience with AWS, Docker, Terraform, and modern CI/CD pipelines ...

Containers & CI/CD (Docker) Datastores: SQL Server, MongoDB, Redis/Memcached Distributed systems & messaging Git source control Nice to have: C++, Python, Java, JavaScript, Entity Framework, TDD, cloud modernisation experience ➕ Working Environment Front-office, desk-aligned engineering role Direct interaction with traders, analytics, and risk teams High-pressure, technically ...

trust, high-sensitivity environments Contribute to systems architecture, testing, integration, and deployment Ideal Background: Strong experience in modern programming languages ( Python, Java, Typescript, JavaScript) Familiarity with secure coding principles and systems engineering Experience with cloud platforms (AWS, Azure, GCP) and DevOps tooling is a bonus Comfortable working in agile, iterative ...

stakeholders, supporting informed decision-making Key Skills & Experience Strong background in software engineering, either as a Senior Engineer or Technical Lead Experience with JavaScript (Node.js/TypeScript) or Python-based environments Proven experience leading teams through end-to-end technical delivery Experience working directly with clients or stakeholders ...

migrating SharePoint 2016 on-premise environments to SharePoint SE and/or SharePoint Online. Proven expertise in SharePoint Framework (SPFx) development. Proficiency in TypeScript, JavaScript, React, HTML5, CSS3, and modern front-end development practices. Strong experience integrating SharePoint solutions using RESTful APIs and Microsoft Graph. Solid experience with C# ...

DynamoDB, CloudFront, SES, API Gateway, Step Functions, EventBridge, and SAM/CloudFormation • Strong SQL programming expertise • Experience with NestJS and modern front-end development (JavaScript, HTML, CSS) • Familiarity with GitLab (or similar) and CI/CD workflows • Proven track record optimizing data storage, retrieval, performance, and cost efficiency • Experience integrating ...

architectural decisions Mentoring engineers and raising the technical bar What We’re Looking For ✔ Strong commercial experience with React & Next.js ✔ Deep knowledge of JavaScript/TypeScript ✔ Experience shipping production-scale applications ✔ CI/CD experience (GitHub Actions preferred) ✔ Strong Git workflow and code review habits ✔ Clear communicator who can collaborate ...

Azure DevOps 🧠 What You Bring Deep expertise in ASP.NET Core, C#, and Azure Services Advanced SQL Server knowledge Experience building modern web applications using JavaScript frameworks Strong understanding of cloud architecture and DevOps best practices This is high-scale, high-visibility engineering with meaningful global impact. 🌟 What ...

migrating SharePoint 2016 on-premise environments to SharePoint SE and/or SharePoint Online. - Proven expertise in SharePoint Framework (SPFx) development. - Proficiency in TypeScript, JavaScript, React, HTML5, CSS3, and modern front-end development practices. - Strong experience integrating SharePoint solutions using RESTful APIs and Microsoft Graph. - Solid experience with C# ...

Linux systems and networking basics Familiarity with Docker Exposure to Infrastructure as Code concepts Basic scripting (e.g. Bash, Python) Familiarity with the TypeScript/JavaScript ecosystem Familiarity with version control (Git) Willingness to learn new technologies and languages Nice to have: Exposure to Terraform Exposure to Cloud Run/ ...

office Key responsibilities: • Deliver a complete frontend application ensuring high performance on mobile and desktop while meeting security standards. • Write tested, wellstructured, and documented JavaScript, TypeScript, HTML, and CSS code. • Coordinate workflow between designers and developers to ensure seamless UI delivery. • Collaborate with backend developers during the creation and integration ...

from 0→1, moving quickly, and working in environments where autonomy and initiative are valued. What Matters Entrepreneurial, ownership and critical thinking Experience with JavaScript/TypeScript and React and/or Node.js Comfortable building and shipping in fast-paced environments Already using AI tools in your workflow to improve ...

Server, Oracle, or equivalent systems. 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. Salary ...