1 to 25 of 203 Permanent JavaScript Jobs in the South East

maintainable production code in Python and TypeScript. Proven experience building complex user interfaces and software integrations using React or similar technologies. Strong knowledge of JavaScript, HTML and CSS. A good understanding of programming concepts, data structures, algorithms and HTML DOM components. Experience working with browser and web APIs, including HTML ...

backend development. You will ideally have: 3+ years' professional experience developing full-stack web applications and delivering software into production. Strong practical experience with JavaScript or TypeScript, React and Next.js, or strong React experience with the willingness to develop your Next.js skills. Good practical experience with C# and .NET, including ...

early. What You'll Bring Python (FastAPI), Node.js, REST APIs. SQL and PostgreSQL. Redis/Valkey for session and WebSocket coordination at scale. Strong JavaScript/TypeScript, HTML5, CSS React (or equivalent), component architecture, state management. Responsive design, web performance (Core Web Vitals: LCP/INP/CLS). ...

customers to build high-quality solutions using Angular and .NET technologies. Key Skills Required Strong commercial experience with Angular Good knowledge of TypeScript, JavaScript, HTML and CSS Experience integrating with REST APIs Solid .NET/ASP.NET Core experience Experience with automated testing tools such as Playwright, Vitest, Cypress or Jest ...

efforts, introducing new ideas and technologies What You'll Bring Proven experience as a Full Stack Engineer or similar role Expertise in Node, React, JavaScript/TypeScript, HTML, CSS, and responsive design principles Strong understanding of Back End technologies and best practices Passion for writing clean, well-tested code Experience ...

.NET (C#) and modern frameworks. Strong skills in building APIs and microservices (REST, gRPC) and working with databases (PostgreSQL). Frontend experience with Angular, JavaScript, HTML5, CSS3. Hands‐on experience with Docker, Kubernetes, and CI/CD pipelines (Azure DevOps or similar). Familiarity with open‐source tools, cloud platforms ...

APIs and backend services. Strong MySQL knowledge, including query optimisation and performance tuning. Understanding of software architecture, design patterns, and SOLID principles. Experience with JavaScript (ES6+), HTML5, CSS, Git, Docker, and Linux/WSL environments. Strong experience with unit testing, automated testing, and code reviews. Experience working in Agile/ ...

delivery. What We're Looking For 5+ years' commercial software engineering experience. Strong experience developing applications using C#/.NET . Experience with React , JavaScript and TypeScript. Strong understanding of cloud-native application development on Microsoft Azure . Experience with Azure services such as: App Service, Azure Functions, Azure Kubernetes ...

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. ...

strong ability to align technical direction with business strategy in fast-moving, product-centric environments. Key requirements: Ruby & Ruby on Rails Full-Stack Engineering: JavaScript, TypeScript, React, Hotwire, Stimulus Node.js & React exposure beneficial API Design: REST, GraphQL, external integrations Data Stores: PostgreSQL, MySQL, Redis, Elasticsearch Async Processing: Sidekiq, Resque Cloud ...

system design background Experience delivering enterprise applications using AWS, Azure or GCP Strong engineering experience with technologies such as Python, SQL, Java, .NET or JavaScript Experience working with modern enterprise data technologies such as Snowflake and/or Databricks Good understanding of enterprise data platforms, data architecture, on-premise lakehouse ...

system design background Experience delivering enterprise applications using AWS, Azure or GCP Strong engineering experience with technologies such as Python, SQL, Java, .NET or JavaScript Experience working with modern enterprise data technologies such as Snowflake and/or Databricks Good understanding of enterprise data platforms, data architecture, on-premise lakehouse ...

standards Key Skills & Experience Strong commercial experience in Java Proven experience developing microservices architectures Solid experience with SQL/relational databases Frontend experience with JavaScript Experience with CI/CD pipelines and DevOps practices Strong understanding of software engineering principles and best practices Experience working in Agile environments Desirable Experience ...

Platform Technologies AWS SageMaker Python scripting and automation Container orchestration platforms Infrastructure security and hardening Cloud networking and connectivity Application Support Knowledge C# .NET JavaScript React REST APIs Microservices architecture COTS Product Experience Supporting Commercial Off-The-Shelf products within secure environments Troubleshooting intelligence, analytical or partner-provided systems Exposure ...

Skills & Experience: Eligibility for Security Clearance Experience in Agile environments (e.g., SCRUM, Kanban) A technical development background with coding skills in Java, C#, TypeScript, JavaScript, or similar Expertise in automation testing, with hands-on experience using tools like Playwright, Selenium, Cypress, or RestAssured Knowledge of integration testing and automation frameworks ...

leadership in QA/testing roles, with experience guiding teams and managing delivery in Agile environments (SCRUM, Kanban) Strong programming skills in Java, C#, JavaScript/TypeScript , or similar Deep expertise in test automation frameworks such as Selenium, Playwright, Cypress, or RestAssured Experience with integration testing, test strategy , and test ...

technical stakeholders Proactively identifies risks, improvements, and opportunities Core skills Strong commercial experience with React and TypeScript in a production environment Strong understanding of JavaScript, HTML5, CSS/SCSS, responsive design, and browser behaviour Experience designing and building maintainable frontend applications at scale Experience integrating frontend applications with RESTful APIs ...

independently and in a team environment. Strong attention to detail and dedication to delivering high-quality work. Experience with front-end technologies (HTML, CSS, JavaScript). Experience with version control systems (e.g., Git is preferred). Hold current SC-level security clearance (preferable). Be able to gain SC-level ...

standards Key Skills & Experience Strong commercial experience in Java Proven experience developing microservices architectures Solid experience with SQL/relational databases Frontend experience with JavaScript Experience with CI/CD pipelines and DevOps practices Strong understanding of software engineering principles and best practices Experience working in Agile environments Desirable Experience ...

guidance, code reviews and mentoring to other engineers. You should have: Strong commercial experience with Python for backend and integration development. Strong TypeScript/JavaScript and React experience building production applications. Strong API design experience, including REST and/or GraphQL, authentication, authorisation, versioning and streaming. Hands-on experience with ...

product lifecycle ownership (build, test, deploy, monitor, iterate); growth mindset with continuous learning and knowledge sharing. Code: Java 17/21 (Spring, Maven), Groovy, JavaScript/TypeScript (Angular) Testing: JUnit, Spock Deployment: Private Cloud (VMs/containers) Tooling: GitLab (git and CI/CD), IntelliJ, Windsurf, Docker, Splunk, AppDynamics ...

Backend: Strong Hands-on Core Java (OOPs concepts), Spring Framework, Hibernate, and Microservices Architecture. Frontend: Extensive implementation experience using Angular (version 8 or above), JavaScript, Bootstrap, HTML5, CSS, JSON, and AJAX. Testing: Strong hands-on experience with Jasmine and Karma, along with TDD practices. Database: Deep knowledge of SQL, major ...

experience with Playwright for end-to-end testing Proven track record of improving test coverage and evolving automation frameworks Solid software development background with: JavaScript/TypeScript Angular (or similar front-end frameworks) REST APIs C#, MVC, Python SQL/T-SQL Experience with unit testing, integration testing, and Test ...

internal security standards into automated code, for deployments in environments such as Azure, VCF and Hyper-V Develop responsive and interactive user interfaces (e.g. JavaScript/TypeScript and React). Make effective use of containerisation technologies (e.g. Kubernetes) to streamline deployment processes and ensure consistency across environments. Implement and maintain ...

engagement, and a passion for national security. Ideal candidates will have knowledge in some of the following: Programming languages such as Python, Java, Golang, JavaScript or C++ Front end frameworks – at least one of React/VueJS/AngularJS Web solutions such as Node.js, Nginx, Caddy or Uvicorn Understanding ...