1 to 25 of 76 JavaScript Jobs in Wales

Required Skills & Experience Demonstrable expertise in MVC and .NET web applications development , including advanced customisation and extensibility. Deep experience with the ASP.NET MVC framework .. Proficient in .NET (C#), JavaScript, Web API, SQL Server , and working knowledge of HTML, CSS, XML, JSON . Comfortable with complex data modelling and performance optimisation in large-scale MVC environments. Adept at explaining technical More ❯

CD pipelines. Proficiency in multiple programming languages (e.g., Python, Go, Java). Experience with low-code platforms. Technology Stack While this role focuses on third-party customizable platforms (primarily JavaScript-based), familiarity with the following technologies is beneficial: AWS Go/Python/Java TypeScript Terraform GitLab ReactJS/NextJS Kubernetes FinTechOS Admiral: Where You Can We take pride in More ❯

Experience with software development methodologies (e.g., Agile) and version control systems (e.g., GitHub). Proficient in one or more programming languages relevant to MES systems (e.g., Python, Java, C#, JavaScript/TypeScript). Excellent problem-solving, analytical, and communication skills. Ability to document technical solutions and provide user training. Team player with strong collaboration skills across technical and non-technical More ❯

with integrating APIs Best working practices and documentation Build tools (Webpack or similar) Automated testing We absolutely require: Strong experience with GIT version control Experience with HTML, SCSS and JavaScript Familiar with package managers, e.g. Composer/NPM Comfortable working with existing codebases Comfortable identifying and squashing bugs Excellent communication skills High attention to detail It would be a bonus More ❯

knowledge, and support each other's growth. What We're Looking For Proven experience leading development projects and mentoring other developers. Strong technical skills in Symfony, Vue.js, HTML, SCSS, JavaScript, and MySQL. Solid understanding of Git, APIs, and package managers (e.g. Composer, NPM). Comfortable working with and improving legacy codebases. A proactive problem-solver who performs well under pressure. More ❯

end expert with an eye for detail, but not afraid to drop into the backend when needed Provencommercial experience in front-end or full-stack development Strong experience with JavaScript/TypeScript and React Familiarity with backend languages like Python and frameworks like Django Experience with unit testing and test-driven development Exposure to Agile working practices Comfortable with mentoring More ❯

also mentor engineers, junior/graduate engineers & trainee engineers contributing to their growth, knowledge, and reviewing their code. Experience that will put you ahead of the curve .NET (8) JavaScript (ES6+)/TypeScript Node JS Azure Services Application monitoring practices, such as metrics, tracing and logging Testing frameworks (e.g. Playwright, XUnit, Jest, Enzyme, React Testing Library & Nightwatch) Building software with More ❯

complete, you will be ready to 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. You can use it for both small and complex More ❯

you will be ready to 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. You can use it for both small and complex More ❯

you will be ready to 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. You can use it for both small and complex More ❯

Our client offers over 20 days of dedicated technical training per year and exposure to cutting edge technologies such as: .NET 9, Web API 2, Entity Framework, Microservices, Azure, JavaScript, Angular 19, Bootstrap, Agile and MongoDB. Additionally you will follow an official structured career progression program. Location: Haverfordwest, Pembrokeshire, Wales, UK/Remote Working Salary: £40,000 - £50,000 + More ❯

and have experience of all stages of IT product design. You will already have programming experience in the following: C# .NET Core/.NET Framework Knockout.JS TypeScript/Vanilla JavaScript LINQ TSQL AJAX/REST/WebAPI HTML5/CSS3/LESS SQL Management Studio Visual Studio Mobile development in Dart/Flutter is advantageous Knowledge, Skills & Experience: You will More ❯

and have experience of all stages of IT product design. You will already have programming experience in the following: C# .NET Core/.NET Framework Knockout.JS TypeScript/Vanilla JavaScript LINQ TSQL AJAX/REST/WebAPI HTML5/CSS3/LESS SQL Management Studio Visual Studio Mobile development in Dart/Flutter is advantageous Knowledge, Skills & Experience: You will More ❯

key areas where staff can experience the work of others first hand. Core Skills & Experience: Proven leadership and mentoring in development teams. Advanced Drupal (8+) development expertise. Strong PHP, JavaScript, HTML5, and CSS3 skills. Experience with CI/CD (e.g., Jenkins, GitLab), Git workflows, and Docker. Familiarity with automated testing frameworks (PHPUnit, Behat, Nightwatch). Agile delivery experience (e.g., Scrum More ❯

GitHub Actions or Azure DevOps or similar. Ideal qualifications, skills and experience Experience implementing/supporting solution in Azure cloud estate. Experience developing and implementing an application in either JavaScript or Python. Experience using containerisation technologies such as Docker or Kubernetes. Supporting open-source projects such as OpenTofu, ArgoCD, etc. Azure or other cloud certifications. Desirable behavioural attributes Experience designing More ❯

planning. Communicate technical decisions clearly to both technical and non-technical stakeholders. Foster a collaborative engineering culture through Chapters, Squads, and Guilds. Experience Required Technical Expertise Strong experience in JavaScript/TypeScript, Playwright, and BDD frameworks like Cucumber. Experience with API/component integration testing using tools such as Bruno and Node-Fetch. Experience in mobile app testing using Appium More ❯

globally, playing a vital role in safety and efficiency. What You'll Bring: Strong programming experience with C# using .NET Core and .NET Framework Proficiency in Knockout.JS, TypeScript, and JavaScript Skilled in TSQL, LINQ, AJAX, RESTful APIs, and WebAPI development Solid front-end development with HTML5, CSS3, and LESS Familiarity with SQL Management Studio and Visual Studio Mobile app development More ❯

globally, playing a vital role in safety and efficiency. What You'll Bring: Strong programming experience with C# using .NET Core and .NET Framework Proficiency in Knockout.JS, TypeScript, and JavaScript Skilled in TSQL, LINQ, AJAX, RESTful APIs, and WebAPI development Solid front-end development with HTML5, CSS3, and LESS Familiarity with SQL Management Studio and Visual Studio Mobile app development More ❯

globally, playing a vital role in safety and efficiency. What You'll Bring: Strong programming experience with C# using .NET Core and .NET Framework Proficiency in Knockout.JS, TypeScript, and JavaScript Skilled in TSQL, LINQ, AJAX, RESTful APIs, and WebAPI development Solid front-end development with HTML5, CSS3, and LESS Familiarity with SQL Management Studio and Visual Studio Mobile app development More ❯

impact. What You'll Be Working With You'll be hands-on with a modern and diverse tech stack, including: C# .NET Core/.NET Framework Knockout.JS TypeScript/JavaScript LINQ, T-SQL AJAX/REST/WebAPI HTML5/CSS3/LESS SQL Server Management Studio, Visual Studio Experience with mobile development (Dart/Flutter) is a bonus, but More ❯

and want to learn new things You enjoy working across the full stack to deliver applications in the cloud You have experience with, or are keen to use modern JavaScript framework You love to make things better for people who use your application You constantly strive for technical excellence More ❯

reusable internal assets with cross-functional HEOR teams. Write clean, maintainable, and well-documented code. What you'll bring to the team: A solid command ofHTML, CSS, and modern JavaScript (ES6+), enabling you to craft clean, responsive user interfaces. Proven experience buildingdynamic, scalable applications with React.js. Hands-on expertise withNode.js, Next.js, or similar frameworks to power robust back-end services. More ❯

CD pipelines. Proficiency in multiple programming languages (e.g., Python, Go, Java). Experience with low-code platforms. Technology Stack While this role focuses on third-party customizable platforms (primarily JavaScript-based), familiarity with the following technologies is beneficial: AWS Go/Python/Java TypeScript Terraform GitLab ReactJS/NextJS Kubernetes FinTechOS About Admiral We take pride in being a More ❯

with the wider technology team, collaborating with delivery mangers product owners, other developers, QA's and much more Role requirements At least 3 years' commercial experience in C# .NET JavaScript React Azure serverless functions Desirables Docker Terraform The Company The company is a market leading digital software house based in the Swansea area. They have been trading for nearly More ❯

and apprentices Escalate technical issues when needed Technical Experience: Experience with Microsoft Azure or similar cloud platforms (such as AWS or Google Cloud) Experience working with a front end JavaScript framework such as Vue, React or Angular etc. Working knowledge of the .NET platform Think this one's for you If you think this .NET Developer opportunity is for you More ❯