Permanent ECMAScript Job Vacancies

1,601 to 1,625 of 2,537 Permanent ECMAScript Jobs

Development Manager (Umbraco Specialist)

Spalding, Lincolnshire, England, United Kingdom
Hybrid / WFH Options
Clear IT Recruitment Limited
Architect, develop, and deploy complex Umbraco-based web solutions (v8–v13) • Remain hands-on in day-to-day coding, solution design, and debugging • Work across front-end (HTML, CSS, JavaScript, Razor) and back-end (.NET/C#) development • Implement best practices in code quality, performance optimisation, and security • Conduct code reviews, sprint planning, and technical estimations • Collaborate with clients to … 5+ years' experience working with Umbraco CMS, including custom development and integrations • Strong .NET/C# development background with MVC and .NET Core • Front-end skills including HTML5, CSS3, JavaScript (ideally with some experience using modern JS frameworks) • Experience with SQL Server, REST APIs, and third-party integrations • Excellent understanding of Umbraco architecture including custom components, packages, and workflows • Experience More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Senior Software Developer with Security Clearance

Herndon, Virginia, United States
Hybrid / WFH Options
Synertex LLC
modules for the MARS program (OB, IMD, S/CS modules) Develop RESTful web services and support implementation/hosting using instancing and throttling models Enhance user interfaces using JavaScript, jQuery, Angular 4, Ajax, and HTML5/XML Write and optimize SQL queries, T-SQL stored procedures, views, and SSIS packages Create technical diagrams, high-quality code, and automated test … experience Bachelor's degree in Computer Science or related discipline Proficiency in object-oriented design, algorithms, and data structures Experience with: REST-style Web API platforms Client-side development (JavaScript, Angular 4, HTML5/XML) SQL/T-SQL, stored procedures, and data integration via SSIS Asynchronous programming, parallel processing, concurrency, and security Software engineering lifecycle best practices Strong collaboration More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Software Engineer

London, United Kingdom
Hybrid / WFH Options
Newspaper WordPress
Responsibilities: Design, develop, and test scalable software applications Collaborate with cross-functional teams including architects, DevOps, and QA Write clean, maintainable, and efficient code using modern languages (Java, Python, JavaScript, etc.) Participate in code reviews and software optimization efforts Contribute to cloud-based deployments (IBM Cloud, AWS, Azure, etc.) Support agile practices such as sprint planning and retrospectives Troubleshoot, debug … trends in software engineering and IT innovation Education & Qualifications: Bachelor's degree in Computer Science, Software Engineering, or related field Experience with one or more programming languages (Java, Python, JavaScript, etc.) Familiarity with cloud platforms, APIs, and DevOps tools Strong problem-solving skills and a collaborative mindset Knowledge of Agile development methodologies Excellent communication and time management skills Salary & Benefits More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer - Java

Milton Keynes, Buckinghamshire, England, United Kingdom
Connexa
code and maintain strong configuration control What we're looking for:* Strong experience in back-end development, ideally with Java and/or Python* Front-end development experience using JavaScript and React* Good knowledge of relational databases and both Linux and Microsoft environments* Familiarity with secure DevOps principles and containerisation tools (e.g. Docker)* Confident communicator with strong documentation and solution … Developer, React Developer, SC Clearance, Public Sector IT, Secure Software, DevOps, Docker, API Design, Cloud Engineering, Defence Software, Agile Developer, Software Engineer Milton Keynes, Security Cleared Developer, Government Projects, JavaScript, Python, Open Source Integration. Established in Didsbury, Connexa Technology Ltd is becoming one of the UK's fastest growing IT and Technology recruitment companies. People. Technology. Connected. Connexa Technology is More ❯
Employment Type: Full-Time
Salary: £60,000 - £70,000 per annum
Posted:

Java Developer (Senior) with Security Clearance

Reston, Virginia, United States
RedKey Solutions
software development lifecycle, including scope and work estimation, architecture and design, coding, and unit testing. Primary Responsibilities: Engage in software programming initiatives to support innovation and enhancement using Java, JavaScript, Python, SpringBoot, Hibernate, and Angular. Develop and direct software system validation and testing methods using Junit and Katalon. Develop and integrate custom software solutions to leverage automated deployment technologies. Prototype … standard operating procedures. Create innovative solutions to meet customers' technical needs. Basic Qualifications: Significant experience with common Agile practices, service-oriented environments, and development practices. Significant experience using Java, JavaScript, and Angular. Extensive experience in the software development lifecycle, with expertise in DevOps toolsets and practices. Direct experience utilizing software testing performance tools such as Junit. Experience with scripting languages More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Full Stack Developer - C#, Javascript and Python - Chelmsford

London, United Kingdom
Tenth Revolution Group
team helping delivering and maintaining the core web applications that support the internal teams and client-facing services. The team operates within a modern, stabilised framework built on Next.js (JavaScript), Tailwind CSS, C# 9 (.NET Core) and Python. Responsibilities will include: Full Stack Development Build and maintain web applications using React.js (with Next.js), JavaScript, HTML5, and Tailwind CSS. Develop RESTful … to feedback, and help elevate overall team quality. The successful candidate will have 3+ years of full stack web development experience with strong proficiency in C#, .Net Core, Python, JavaScript, React.js, and Next.js. More ❯
Employment Type: Permanent
Salary: £55000 - £60000/annum
Posted:

Frontend Full Stack Developer with C# SQL Server

London, United Kingdom
Jas Gujral
security, artificial intelligence, natural language processing, UI design and mobile would be very useful. The Client would like to see experience of the following skills: Languages: HTML5, CSS3, C#, Javascript ( is not main focus but knowledge is good) Frameworks: ASP.Net 4-6, MVC, Ajax, JQuery, HTML, Bootstrap and Knockout (required), Angular (optional) DB's: Ms Sql Server 2012 Testing: Nunit … front end development? Have you worked in a fast paced ecommerce environment? Have you experience in supporting Web applications with high traffic? Are you a whizz with scripting languages JavaScript and C# ? Experienced in full automation and configuration management? Can you help developers own and deliver change from keyboard to customer? Can you diagnose and fix complex production issues working More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Developer

Norwich, Norfolk, England, United Kingdom
Hybrid / WFH Options
MPJ Recruitment Ltd
make a real difference from day one. What you’ll be doing: Leading by example, working alongside other senior developers. Building and maintaining web apps using PHP (Laravel) and JavaScript (Angular or similar frameworks). Delivering new features and improving existing applications—end to end. Designing and building robust, scalable systems using modern cloud technologies. Collaborating closely with product managers … ideally PHP 8.3+), with a few years of solid professional experience under your belt. Hands-on experience with Laravel (preferably version 11+). Confident using Angular or a similar JavaScript framework (Vue, React, etc.). Experience working with RESTful APIs and JSON integrations. Comfortable using Git and familiar with tools like Jira. A collaborative approach and great communication skills. A More ❯
Employment Type: Full-Time
Salary: £45,000 - £60,000 per annum, Negotiable
Posted:

Web Developer with Security Clearance

Fairfax, Virginia, United States
Convirgence
shall be required to work with the Sponsor staff and contractor analyst personnel, to include external stakeholders, when applicable. The Contractor Team shall develop the Sponsor's application, via JavaScript, node.js-based CSS Styles user interfaces. The Contractor Team shall employ the ReactJS framework including Kendo and MaterialUI for presentation and Redux/Saga for data manipulation against the Sponsor … processing type services such as ETL workflows/scripts. 11. Demonstrated experience with REST services. 1. Demonstrated experience with Go HTML Templates. 2. Demonstrated experience with AlpineJS/htmx JavaScript libraries. 3. Demonstrated experience with graphs and graph data modeling. More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

C# Software Engineer

Solihull, West Midlands, United Kingdom
Hybrid / WFH Options
Convergence Group Ltd
contributing to an engineering culture that values clean code, autonomy, and continuous improvement. Responsibilities of our C# Software Engineer: Build and maintain high-quality, scalable web applications using C#, JavaScript, web development frameworks and libraries (e.g. React, Next.js, Blazor), and Azure services. Design intuitive front-end experiences and robust back-end logic with seamless client-server integration. Implement new features … knowledge sharing, and continuous learning. Drive improvements across the SDLC: tools, pipelines, architecture, and documentation. What youll Bring: A minimum of 5 years experience of C# Strong knowledge of JavaScript, HTML/CSS, and modern frameworks (React, Blazor, Next.js). Experience working knowledge of Azure cloud services and SQL databases. A solid grasp of CI/CD pipelines and automated More ❯
Employment Type: Permanent, Work From Home
Salary: £60,000
Posted:

.NET Developer - Global Phenomenon - Woking, Surrey

Woking, Surrey, United Kingdom
Hybrid / WFH Options
Noir Consulting
.NET Developer - Global Phenomenon - Woking, Surrey (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client has created a global phenomenon, connecting people online to unique travel experiences, in more than 60,000 cities and 180 countries. As they approach their 10th anniversary they are … MVC, C# and Azure SQL. You will receive industry recognized training in all aspects of: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. Our client offers a structured career progression programme. It is common place for developers within their firm to receive their first promotion (and pay rise!) within More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

.NET Developer

Lincoln, Lincolnshire, England, United Kingdom
Hybrid / WFH Options
Noir
.NET Developer - Global Phenomenon - Lincoln (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client has created a global phenomenon, connecting people online to unique travel experiences, in more than 60,000 cities and 180 countries. As they approach their 10th anniversary they are looking … MVC, C# and Azure SQL. You will receive industry recognized training in all aspects of: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. Our client offers a structured career progression programme. It is common place for developers within their firm to receive their first promotion (and pay rise!) within More ❯
Employment Type: Full-Time
Salary: £40,000 - £60,000 per annum
Posted:

.NET Developer

City of London, London, England, United Kingdom
Hybrid / WFH Options
Noir
.NET Developer - Global Phenomenon - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client has created a global phenomenon, connecting people online to unique travel experiences, in more than 60,000 cities and 180 countries. As they approach their 10th anniversary they are looking … MVC, C# and Azure SQL. You will receive industry recognized training in all aspects of: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. Our client offers a structured career progression programme. It is common place for developers within their firm to receive their first promotion (and pay rise!) within More ❯
Employment Type: Full-Time
Salary: £70,000 - £90,000 per annum
Posted:

.NET Developer

Horsham, West Sussex, England, United Kingdom
Hybrid / WFH Options
Noir
.NET Developer - Global Phenomenon - Horsham (Tech stack: .NET Developer, .NET 9, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client has created a global phenomenon, connecting people online to unique travel experiences, in more than 60,000 cities and 180 countries. As they approach their 10th anniversary they are looking to … MVC, C# and Azure SQL. You will receive industry recognized training in all aspects of: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. Our client offers a structured career progression programme. It is common place for developers within their firm to receive their first promotion (and pay rise!) within More ❯
Employment Type: Full-Time
Salary: £40,000 - £60,000 per annum
Posted:

NET Developer

London, United Kingdom
Hybrid / WFH Options
Noir
.NET Developer - Global Phenomenon - London (Tech stack: .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client has created a global phenomenon, connecting people online to unique travel experiences, in more than 60,000 cities and 180 countries. As they approach their 10th anniversary they are looking … MVC, C# and Azure SQL. You will receive industry recognized training in all aspects of: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. Our client offers a structured career progression programme. It is common place for developers within their firm to receive their first promotion (and pay rise!) within More ❯
Employment Type: Permanent
Salary: £70000 - £90000/annum Bonus + Pension + Benefits
Posted:

Associate Software Engineer (Remote in Scotland)

Dundee, Angus, United Kingdom
Hybrid / WFH Options
Ivanti
both. Learn industry standard tools like GitHub source control and pipelines, Azure Hosting, Azure Devops, Kubernetes, and Terraform to name a few. Use that knowledge to develop a custom JavaScript application that keeps product information up to date in a dynamic way with little to no maintenance. Then deliver that information to Engineering and SaaS Operations in ways that accelerates … Develop and maintain features for two custom applications used for R&D teams to find information and deploy dev/test environments. Programming languages are java/nodeJS and javascript/react. Understand Github source control and build github actions to ensure pipelines meet release criteria. Learn security tooling like BlackDuck, Prisma, Polaris and RiskSense and ensure our application is More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Adv Software Eng 2 with Security Clearance

Scottsdale, Arizona, United States
Moseley Technical Services, Inc
Django Python Framework and Microsoft SQL Server. Develop and manage relational databases to store project, configuration, and licensing data. Write clean, modular, and well-documented code using HTML5, HTMX, JavaScript, CSS, and RESTful APIs. Collaborate with cross-functional teams to gather requirements, define architecture, and implement user-centric solutions. Administer application environments, including deployment, Active Directory integration, and hosting support. … Subject Matter Expert (SME) in Django and Python, with experience developing full-stack web applications. Strong knowledge of Microsoft SQL Server and relational database design. Proficiency in HTML5, CSS, JavaScript, and HTMX. Experience with Git and GitLab for version control. Ability to independently drive tasks from requirements to deployment. Demonstrated ability to solve complex problems using sound software engineering principles. More ❯
Employment Type: Permanent
Salary: USD 71 Hourly
Posted:

Web Software Engineer

Milton Keynes, Buckinghamshire, United Kingdom
Hybrid / WFH Options
Allica Bank Limited
through pair programming, code reviews, and career planning. Help foster their growth within Allica. Feature Delivery Responsibilities Design & Development: Design, implement, and maintain React-based frontend applications using modern JavaScript frameworks (React, Typescript, Redux, etc.). Feature Deployment: Contribute to the smooth deployment of new features and applications, ensuring they are production-ready and performant. Cross-functional Collaboration: Partner closely … as Jest and React Testing Library , and contribute to the development of end-to-end tests using Cypress . Key Skills & Experience Core Frontend Expertise: Demonstratable experience in in JavaScript , Typescript , and React (including Hooks). Testing Experience: Experience in unit and integration testing with Jest and React Testing Library . Familiarity with end-to-end testing using Playwright , Cypress More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer, Lifecycle + Growth United States, Germany, United Kingdom

London, United Kingdom
Hybrid / WFH Options
vercel.com
Engineer specializing in Account Lifecycle and Access Management (IAM). In this role, you will play a pivotal role in designing, building, and maintaining scalable, high-performance systems. Leveraging JavaScript/TypeScript, Node.js, SQL and NoSQL cloud-native databases, and AWS, you will develop innovative solutions for user, group, and membership management while ensuring the highest levels of security and … enterprise software using TypeScript, REST APIs, and JSON. About You: 3+ years of experience in frontend engineering and deploying cloud computing solutions (AWS preferred). Proficiency in TypeScript/JavaScript, Next.js, React, and Node.js. Experience with SQL and NoSQL databases. Practical experience developing and improving applications written in Node.js. Able to drive a project from idea to completion without a More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Mobile Developer

Kirkham, Preston, Lancashire, England, United Kingdom
Hybrid / WFH Options
GoFind Recruitment
a skilled and driven Senior Mobile Developer, based at their offices in Kirkham. They are expanding their product capabilities and looking for a Senior Mobile Developer who thrives in JavaScript/React environments and has deep native development expertise in both iOS and Android. This is a rare opportunity to directly shape the future of their mobile platform within a … tools, frameworks, and best practices in mobile development and DevOps. Experience/Qualifications: 4+ years of commercial mobile development experience, ideally in a senior or lead capacity. Expert in JavaScript/TypeScript and React Native, with a strong understanding of hybrid vs native trade-offs. Proven ability to design, implement, and maintain complex native modules using Swift and Kotlin. In More ❯
Employment Type: Full-Time
Salary: £45,000 - £55,000 per annum
Posted:

Senior Software Engineer - Roku/Disney+

London, United Kingdom
Disney Cruise Line - The Walt Disney Company
likely have a chance to work on it in code Have the opportunity to contribute to the development of tools and systems outside of the Roku apps, such as JavaScript- & React-based web tools, gulp build scripts, AWS configurations, and Node.js services Work with Roku to vet new hardware, firmware and certification requirements from a client application perspective Collaborate closely … and feature degradation techniques • Experience creating and extending templated controls, and writing custom controls Experience with asynchronous and concurrent code Experience with unit testing and related patterns Experience with JavaScript client- and server-side development Experience with DevOps, gulp scripts, Jenkins and AWS Required Education Bachelor's degree or better in Computer Science or a related technical field or equivalent More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Frontend Engineer - Poland, Remote

London, United Kingdom
Hybrid / WFH Options
Randstad (Schweiz) AG
as online payments, quoting, invoicing, booking, search/scoring algorithms, ETL, data pipelines, in-app messaging, real-time notifications and fraud prevention. Our frontend engineers mostly work with TypeScript, JavaScript (ES2022), React, React Query, React Router, MaterialUI, GitHub actions, on an increasingly more service-oriented architecture. The rest of the tech stack include Django REST Framework, PostgreSQL, AWS, Kubernetes, Docker … technical documentation of code, algorithms and APIs Help in drafting of end-user manuals Identify, evaluate and communicate front-end best practices. Skills Expert level knowledge of TypeScript or JavaScript (ES6), and most common Styling libraries. Strong grasp of the React Framework, relative patterns and best practices. Good understanding of UI/UX best practices and considerations. Understanding of front More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Site Reliability Engineer (DV Security Clearance)

Gloucester, Gloucestershire, South West
Hybrid / WFH Options
CGI
systems when needed. We are looking for candidates with a positive problem solving attitude who can adapt to client problems as required. The Tech Stack used is: Java, Python, Javascript (Typescript), Vue, Bash, Jenkins, Ansible ,Cucumber, NiFi, Go, AWS, Gitlab, ELK stack, Terraform, Grafana, Sonarqube, Openshift, Linux Required qualifications to be successful in this role Proven experience in Site Reliability … a positive, solution-focused mindset, with the ability to adapt to changing client needs. Desirable Skills: Hands-on experience with Apache NiFi for data flow management. Exposure to Java, JavaScript/TypeScript, and Vue for full-stack understanding. Experience with BDD frameworks like Cucumber. Background in supporting or working on big data projects is highly advantageous. Qualifications: Degree in Computer More ❯
Employment Type: Permanent
Posted:

Staff Software Engineer with Security Clearance

Englewood, Colorado, United States
Innova Solutions, Inc
business requirements. Developing custom contact attributes, prompts, and contact flow modules to enhance the customer experience and optimize agent workflows. • Lambda Function Development: Writing Lambda functions in C# or JavaScript to extend AWS Connect capabilities, such as customizing call routing based on dynamic data, performing backend operations, and integrating with third-party APIs. Implementing serverless solutions using AWS Lambda to … Lambda, DynamoDB, S3, CloudFormation, IAM, and CloudWatch. • Strong understanding of contact center operations, including IVR systems, call routing, and telephony integrations. • Experience with programming languages such as React, Python, JavaScript, or Java. • Solid understanding of RESTful APIs, web services, and microservices architecture. • AWS certification (e.g., AWS Certified Solutions Architect, AWS Certified Developer) is a plus. • Experience with CI/CD More ❯
Employment Type: Permanent
Salary: USD 80 Hourly
Posted:

Full Stack Software Engineer

Inverurie, Scotland, United Kingdom
Hybrid / WFH Options
DataAnnotation
Job Description DataAnnotation is committed to creating quality AI. Join our team to help train AI chatbots while gaining the flexibility of remote work and choosing your own schedule. We are looking for a proficient Full Stack Software Engineer to More ❯
Posted: