1 to 25 of 55 JavaScript Jobs in Hertfordshire

Senior Software Engineer (Golang)

Hiring Organisation
IntaPeople: STEM Recruitment
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
z2bz0 years experience as a Software/Senior Engineer Strong experience with technologies such as Golang Good experience with TypeScript. Experience with both JavaScript and frameworks such as React and Express.js (or similar) Strong experience using HTML & CSS Experience with cloud platform providers such as AWS, Azure or GCP (ideally ...

Data Reporting engineer (Python/.Net)

Hiring Organisation
Tenth Revolution Group
Location
Hemel Hempstead, 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 Full Stack Engineer

Hiring Organisation
Bank of London
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
application development (preferably Node.js) 8-10+ years of professional software engineering experience 5+ years working with modern front-end web technologies: HTML, CSS, JavaScript, React 5+ years working with server-side languages Desired experience working with IDM platforms (Okta, Auth0) Familiarity with container technologies (Docker) and microservices architectures, preferred ...

Dynamics Developer

Hiring Organisation
Bromford
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
integration and continuous deployment (CI/CD) processes. EXPERIENCE & QUALIFICATIONS Essential Skills: Model driven apps Dataverse Power Automate Development TypeScript Desirable Skills (Bonus): C# JavaScript (including TypeScript) Canvas apps and Power Pages Azure DevOps for task management Agile Scrum methodology Microsoft SharePoint, Power BI, and Copilot PowerShell scripting ...

Frontend Developer

Hiring Organisation
UBIQ
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
experience in front-end development, with a strong portfolio of responsive, design-driven builds. Deep understanding of HTML5, CSS3 (SASS/SCSS), and modern JavaScript (ES6+). Proven experience with front-end frameworks such as React, Vue, or Next.js. Excellent understanding of responsive design, cross-browser compatibility, and accessibility (WCAG ...

Full Stuck Developer

Hiring Organisation
RED Global
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
recruiting for a Full Stack Developer for a remote 3-month contract. Key Skills Required Frontend: JavaScript, HTML, responsive UI Backend: Node.js, Spring Boot, REST APIs, Docker, Kubernetes (EKS) Integration: Kafka, MongoDB/DocumentDB Security: IDAM/IdP, SSO, RBAC, SSL/TLS, KMS, Graph API Cloud: AWS logging, telemetry ...

Senior Software Engineer (OutSystems and .NET)

Hiring Organisation
ITRAC
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
modularization, performance optimization, and scalable design principles. Professional Traditional Web Developer Certification (mandatory). Associate Developer (ODC) Certification (mandatory). Scripting languages such as JavaScript, TypeScript or NodeJS Strong .NET Core (C#) skills (including Entity Framework and MVC and WebAPI, .NET 8 or later Additional Technical Experience: RESTful API design ...

Senior Software Engineer (OutSystems and .NET)

Hiring Organisation
ITRAC
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
modularization, performance optimization, and scalable design principles. Professional Traditional Web Developer Certification (mandatory). Associate Developer (ODC) Certification (mandatory). Scripting languages such as JavaScript, TypeScript or NodeJS Strong .NET Core (C#) skills (including Entity Framework and MVC and WebAPI, .NET 8 or later Additional Technical Experience: RESTful API design ...

C# / C++ Software Engineer

Hiring Organisation
Certain Advantage
Location
Stevenage, Hertfordshire, South East, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£65 per hour, Benefits Overtime Rate
skills Knowledge of using Microsoft Windows and Linux operating systems Non-essential: Distributed simulation standards/Protocols (DIS, HLA, DDS) and web services development (JavaScript, Node JS or similar) Military Communications, Datalinks and Interfaces such as 1553/1760 and Ethernet TCP/IP Practical knowledge of System integration principles ...

Senior Facilities Management Systems Coordinator

Hiring Organisation
MBDA
Location
Stevenage, Hertfordshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
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 Customer Success Engineer

Hiring Organisation
Veracode
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
GitHub, Jenkins, etc.) Experience writing scripts with Python, Postman, etc. to automate tasks via security tool APIs (REST & GraphQL) Familiarity with how .NET, Java, JavaScript programs are compiled and packaged. Hands-on experience with application security solutions (Veracode, Synopsys, Checkmarx, Snyk, etc.) and cloud security solutions (Wiz, Palo Alto Prisma ...

Senior Product Security Engineer

Hiring Organisation
Affirm
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
Azure AD B2C — including customization, integration, and lifecycle management. Strong software engineering and automation background, with proficiency in APIs, RESTful services, scripting (Python, JavaScript, etc.), and Infrastructure as Code (Terraform, CloudFormation). Security-first mindset with knowledge of best practices in identity governance, access controls, encryption, MFA, risk-based authentication ...

Ruby on Rails Developer

Hiring Organisation
Niche Software Recruitment - Ruby on Rails Specialists
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
external developers Contribute to technical decisions and best practices Essential Requirements 3+ years commercial software development experience Strong Ruby on Rails and modern JavaScript skills Front-end experience (HTML, CSS/SASS) Experience with PostgreSQL Git and Agile workflow experience ...

Csharp Software Engineer

Hiring Organisation
Morson Edge
Location
Stevenage, Hertfordshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
£49.70 - 65.00 per hour + None
Linux operating systems. Excellent written, verbal, and presentation skills. Desirable Skills: Familiarity with distributed simulation standards (DIS, HLA, DDS). Experience developing web services (JavaScript, Node.js or similar). Knowledge of military communication protocols (1553/1760, Ethernet TCP/IP). Understanding of system integration principles and processes. ...

Software Engineer, Build Compute

Hiring Organisation
Vercel
Location
Stevenage, 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 ...

Cloud Engineering Team Lead

Hiring Organisation
Sky
Location
Borehamwood, Hertfordshire, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
researching and implementing new technologies Experience with mentoring/knowledge-sharing Proven experience in coding with a programming/scripting language (e.g. Java, Golang , Javascript , Python, Bash) Proven experience in IAC frameworks (e.g. Terraform , Ansible , Pulumi ) Proven experience in using LINUX/UNIX Proven experience in using the GitOps approach ...

Senior Full Stack Engineer

Hiring Organisation
Deel
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
scalable, and secure solutions that power Deel's global workforce and payroll services. Responsibilities You will develop high-quality, responsive web applications using TypeScript, Javascript, React, Express. Experience with NestJS, Vite, and Next.js is a plus. You will design and implement server-side APIs, data models, and business logic using ...

Martech Developer - Contract

Hiring Organisation
Bodhi Resourcing
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
someone with experience of Braze, Bloomreach, Klaviyo, Adobe Campaign or SFMC and hands-on development experience in at least one of the following languages: JavaScript, Python, Java, CSS, or SQL and also with APIs (REST and/or SOAP), have a sharp eye for detail when it comes to testing ...

Martech Developer - Contract

Hiring Organisation
Bodhi Resourcing
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
someone with experience of Braze, Bloomreach, Klaviyo, Adobe Campaign or SFMC and hands-on development experience in at least one of the following languages: JavaScript, Python, Java, CSS, or SQL and also with APIs (REST and/or SOAP), have a sharp eye for detail when it comes to testing ...

Martech Developer - Contract

Hiring Organisation
Bodhi Resourcing
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
someone with experience of Braze, Bloomreach, Klaviyo, Adobe Campaign or SFMC and hands-on development experience in at least one of the following languages: JavaScript, Python, Java, CSS, or SQL and also with APIs (REST and/or SOAP), have a sharp eye for detail when it comes to testing ...

Salesforce Developer

Hiring Organisation
NTT DATA
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
Processes (fka Integration Procedures) OmniScripts Skills in Apex (triggers, batch, web services) Integration Experience is beneficial (Mulesoft/APIGEE/Connected Apps) Experience of JavaScript/Lightning components Basic understanding of Apex sharing and security model Experienced with Lightning Web Components Skills in analysing and problem-solving issues Experience ...

Senior Infrastructure Support Engineer

Hiring Organisation
Nscale
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
maintain runbooks, automate diagnostics, and reduce human intervention using scripts or small tools. Automation and Git. Scripting or software skills in Bash, Python, or JavaScript (or equivalent) for operational tooling and integrations, and experience with Infrastructure Automation tools (Ansible, Puppet, Terraform, Chef) Cloud Infrastructure Administration and Troubleshooting. Strong familiarity with ...

Senior Infrastructure Support Engineer

Hiring Organisation
Nscale
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
maintain runbooks, automate diagnostics, and reduce human intervention using scripts or small tools. Automation and Git. Scripting or software skills in Bash, Python, or JavaScript (or equivalent) for operational tooling and integrations, and experience with Infrastructure Automation tools (Ansible, Puppet, Terraform, Chef) Cloud Infrastructure Administration and Troubleshooting. Strong familiarity with ...

Software Tech Lead - AI Training (Remote, Freelance)

Hiring Organisation
Braintrust
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
Computer Science, Software Engineering, or a related technical field, or equivalent professional experience Proficiency in one or more programming languages (e.g., Python, Java, JavaScript, C++, etc.) Strong problem-solving and analytical skills Clear written communication skills to explain technical concepts Comfortable working independently and following structured instructions Attention to detail ...

Software Tech Lead - AI Training (Remote, Freelance)

Hiring Organisation
Braintrust
Location
Stevenage, Hertfordshire, UK
Employment Type
Full-time
Computer Science, Software Engineering, or a related technical field, or equivalent professional experience Proficiency in one or more programming languages (e.g., Python, Java, JavaScript, C++, etc.) Strong problem-solving and analytical skills Clear written communication skills to explain technical concepts Comfortable working independently and following structured instructions Attention to detail ...