1 to 25 of 36 JavaScript Jobs in Hertfordshire

Senior Android Engineer

Hiring Organisation
John Lewis Partnership
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
Docker, Kubernetes, and cloud platforms such as AWS, GCP or Azure Understanding of UX principles HTML, CSS, and related web technologies Experience with modern JavaScript libraries and tooling, such as React, Redux, Webpack Any server side development languages such as Java/Kotlin. Additional Information: The application form consists ...

Data Reporting engineer (Python/.Net)

Hiring Organisation
Tenth Revolution Group
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
Stack .NET development SQL Server & SQL Server Reporting Services Python for data engineering and Power BI Strong SQL knowledge Git/GitHub React/Javascript Experience within NHS or Healthcare sector is a must have Python software developer - Contract: Required Skillset: 5+ years Software engineering experience with Python ...

Senior Automation Test Engineer - ETRM / Trading Platforms

Hiring Organisation
DataCareers
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
Essential skills include strong experience in test automation with an ETRM platform with as many of the following as possible: Programming & Scripting: Python, Java, JavaScript, C++, Scriban Web Technologies: RESTful APIs, JSON, HTML, CSS, Node.js Databases: SQL Server, MySQL, PostgreSQL, MongoDB Tools & Frameworks: Git, Docker, Jenkins, Kubernetes, Agile (Scrum & Kanban ...

Senior Facilities Management Systems Coordinator

Hiring Organisation
MBDA
Location
Stevenage, Hertfordshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
degree in IT & Management or computer science or a related technical field. Significant experience with translating client requirements to technical specifications. Experience with JavaScript is required. Planon System Admin experience is desirable and/or experience with CAFM tools The following technologies are a plus: JQuery, AngularJS, MS-SQL, Oracle ...

Senior Facilities Management Systems Coordinator

Hiring Organisation
MBDA
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
degree in IT & Management or computer science or a related technical field. Significant experience with translating client requirements to technical specifications. Experience with JavaScript is required. Planon System Admin experience is desirable and/or experience with CAFM tools The following technologies are a plus: JQuery, AngularJS, MS-SQL, Oracle ...

Senior Software Engineer (Front End)

Hiring Organisation
MATILLION LTD
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
technical growth Participate in on-call support and help proactively prevent customer-facing issues What We're Looking For: Essential Strong experience with JavaScript/TypeScript and modern front-end frameworks (e.g., React) Solid understanding of UI architecture, component design, state management, and front-end performance Experience delivering features through ...

Integrations Engineer - AWS and Azure

Hiring Organisation
Akkodis
Location
Stevenage, Hertfordshire, United Kingdom
Employment Type
Permanent
Salary
£50000 - £70000/annum
across AWS and Azure Solid knowledge of API design and management, including REST/SOAP and event-driven architectures Hands-on experience with Python, JavaScript, or ETL/data transformation tools Experience integrating with SaaS platforms including Salesforce, ServiceNow, SAP, or Pega Strong communication skills with the ability to engage ...

Software Engineer, Build Compute

Hiring Organisation
Vercel
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
infrastructure, working with virtual filesystems and linux primitives. About You: 6+ years of relevant software engineering experience. Strong proficiency at least one of JavaScript/TypeScript/Golang, Golang preferred. You have extended experience with Containers, Virtual Machines, Linux. Practical experience building, running and debugging distributed systems. Excellent problem solving ...

Software Developer Intern

Hiring Organisation
AVEVA
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
Computer Engineering, Math, Engineering degree or related field. Basic understanding of software development in one or more modern programming languages (C++, C#, HTML/JavaScript, Python etc.) A passion for creating software with good skills in problem solving and debugging. Good communication with the ability to explain a technical solution. ...

Software Development Engineer II - Full Stack (UI Focussed)

Hiring Organisation
Tesco
Location
Welwyn Garden City, England, United Kingdom
develop robust, scalable and efficient UI applications to optimise warehouse operations and drive operational success. UI Development : Build rich, responsive user interfaces using modern JavaScript frameworks (e.g., React). Feature Delivery : Implement and ship end-to-end stories, primarily focused on frontend with some backend integration. Technical Contribution : Take ownership … integrating with backend services. Exposure to agile methodologies and DevOps practices. Ability to support and collaborate with other engineers. Tech Stack Specialization Frontend: JavaScript/TypeScript, React, HTML/CSS, RESTful APIs. Backend (Basic): Java, Spring Boot, Kafka, PostgreSQL, Couchbase. DevOps: CI/CD pipelines (Azure DevOps, GitHub Actions), Docker ...

Senior Software Engineer | $160/hr Max

Hiring Organisation
Mercor
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
technical research, or educational content development. Bachelor's degree in Software Engineering, Computer Science, or a related field. Strong proficiency in languages like Python, JavaScript, Java, or C++. Experience with debugging, testing, and validating code. Comfortable with technical writing and attention to detail. Preferred Degree from Top US Colleges ...

Sr. Software Engineer | $120/hr Cap

Hiring Organisation
Mercor
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
/hour Location: Remote Duration: 1 month Commitment: 15–20 hours/week Role Responsibilities Develop and validate coding benchmarks in React, TypeScript, or JavaScript by curating issues, solutions, and test suites from real-world repositories. Ensure benchmark tasks include comprehensive unit and integration tests for solution verification. Maintain consistency ...

Web Developer - Contract

Hiring Organisation
Twine
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
provide regular performance reports Collaborate with stakeholders to ensure brand consistency and alignment with business goals Requirements Proficiency in web development (HTML, CSS, JavaScript, and relevant CMS platforms) Experience with e-commerce website creation and management Strong understanding of social media management and digital marketing best practices Familiarity with high ...

E-Learning Content Developer

Hiring Organisation
MBDA
Location
Stevenage, Hertfordshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£40,000
calm professional manner, even when things are changed at the last minute. w. We are looking for prior experience of: programming in HTML5, Javascript, CAD tools (CREO and SolidWorks). Knowledge of multimedia authoring tools (Storyline, 3DSMax, Flash PhotoShop and Da Vinci Resolve amongst others and using them to create ...

Senior ServiceNow Developer

Hiring Organisation
Arden Resourcing Limited
Location
Hatfield, Hertfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £85,000 per annum
analysis of problems and possible solutions You will have: 5 years’ experience developing the ServiceNow platform Experience with common web and platform technologies (XML, JavaScript, JSON, HTML, CSS etc) ServiceNow Certified System Administrator accreditation required, and having CIS-CSM/CIS-ITSM, ITIL v4 Foundation would be advantageous ...

Sr. Software Engineering Lead

Hiring Organisation
Mercor
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
technical research, or educational content development. Bachelor's degree in Software Engineering, Computer Science, or a related field. Strong proficiency in languages like Python, JavaScript, Java, or C++. Experience with debugging, testing, and validating code. Comfortable with technical writing and attention to detail. Preferred Degree from Top US Colleges ...

Front-End Developer

Hiring Organisation
Mercor
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
/hour Location: Remote Duration: 1 month Commitment: 15–20 hours/week Role Responsibilities Develop and validate coding benchmarks in React, TypeScript, or JavaScript by curating issues, solutions, and test suites from real-world repositories. Ensure benchmark tasks include comprehensive unit and integration tests for solution verification. Maintain consistency ...

Node Engineer - Tech Lead

Hiring Organisation
Lumenalta
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
FinTech, Transportation, Insurance, Media or other complex multifactor industries Requirements 10+ years of professional experience (A technical assessment will be required) Extensive experience with Javascript, NodeJS, Express, Mongo Proven track record managing teams Ability to create clean, modern, testable, well-documented code Serverless experience with AWS lambda or Azure functions ...

Intermediate Fullstack Engineer (Ruby/Vue.js), Growth

Hiring Organisation
GitLab
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
documenting decisions, participating in code reviews, and sharing learnings from experiments. What you'll bring Professional experience developing with Ruby on Rails and modern JavaScript, ideally with Vue.js, demonstrating proficiency in fullstack engineering. Strong expertise in Git and source control systems, with a solid understanding of feature development and deployment ...

ServiceNow Technical Delivery Consultant

Hiring Organisation
COMPUTACENTER (UK) LIMITED
Location
Hatfield, Hertfordshire, South East, United Kingdom
Employment Type
Permanent
admin on medium to large scale ServiceNow platforms with excellent communication skills. Minimum 3 years of experience with common web and platform technologies (XML, JavaScript, JSON, HTML, CSS, etc). Extensive experience in IT Service Management, with a focus on incident management. Experience of working in a SaaS environment. Ability ...

Technical Content Reviewer (Remote)

Hiring Organisation
Work Vista
Location
Hemel Hempstead, Hertfordshire, UK
appropriate) solution. Qualifications: Proven experience in software development, technical support, or technical writing. Proficiency in at least one major programming language (e.g., Python, Java, JavaScript, C++) and familiarity with standard coding conventions. Strong command of technical English, with the ability to edit for clarity and structure. Meticulous attention to detail ...

React Developer - Mid Level

Hiring Organisation
Lumenalta
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
Logistics, FinTech, Transportation, Insurance, Media or other complex multifactor industries Requirements 3+ years of professional experience (A technical assessment will be required) Experience with Javascript, React, Redux, Websockets, Async/Await Ability to create clean, modern, testable, well-documented code Advanced English fluency, verbal and written Professional, empathic, team player ...

Full Stack Engineer

Hiring Organisation
Quantum
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
guidance and mentorship to other engineers, ensuring code quality through reviews and best practices. Design and implement responsive, user-friendly web interfaces using modern JavaScript frameworks (Next.js, React). Collaborate with UX/UI designers to turn designs into functional, intuitive interfaces. About You: Expertise in JavaScript frameworks like React ...

.NET Developer

Hiring Organisation
Noir
Location
Stevenage, Hertfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £60,000 per annum
.NET Developer, .NET 10.0, C# 14 - Consultancy - Stevenage (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is an award winning Microsoft consultancy. They specialise in delivering innovative … Knowledge of software development methodologies is of interest (Agile, Scrum). My client will provide training in: .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, MongoDB, Azure, AWS, Node.js and Elasticsearch. This is a truly exciting project, one which if you are given ...

Lead Software Engineer

Hiring Organisation
ByteHire
Location
Borehamwood, Hertfordshire, South East, United Kingdom
Employment Type
Permanent
Engineering Leadership, Delivery & Team Development Architect, design, and deliver scalable, high-performance full-stack solutions. Lead complex feature development across PHP (Symfony/Laravel), JavaScript (Vue.js or React.js or Node.js), and AWS . Own technical direction, architecture decisions, and engineering standards. Manage end-to-end delivery of features from discovery … practices, monitoring, observability, and production readiness. Essential Technical Experience: Significant full-stack engineering experience, particularly with PHP (Symfony or Laravel) . Strong experience with JavaScript (Vue.js, React.js, and/or Node.js). Solid database expertise across MySQL and PostgreSQL . Hands-on experience with AWS architecture , Docker, and CI/ ...