101 to 125 of 156 JavaScript Jobs in Hertfordshire

Rate £550-650pd, Outside IR35 | 12-months Contract Length Senior-level backend experience with Python and Django in production systems Proven work with JavaScript and React (production experience strongly preferred) Familiarity with MySQL Databases and scale Strong grasp of APIs, cloud-native systems, and scalable architecture Freelance mindset: able ...

conducting security testing using OWASP ZAP and Dependency Check. Validating RESTful APIs using Postman or Newman, along with using browser developer tools (Lighthouse, JavaScript debug console, etc.) to support functional and non-functional testing. Collaborating effectively within Agile delivery teams, contributing to continuous improvement of testing practices whilst maintaining test ...

conducting security testing using OWASP ZAP and Dependency Check. Validating RESTful APIs using Postman or Newman, along with using browser developer tools (Lighthouse, JavaScript debug console, etc.) to support functional and non-functional testing. Collaborating effectively within Agile delivery teams, contributing to continuous improvement of testing practices whilst maintaining test ...

.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 ...

experience working effectively within large, enterprise-scale codebases. ● Solid proficiency in Java (deep server-side development and platform architecture familiarity). ● Strong experience with JavaScript, TypeScript and React (front-end development, with an interest in UX/UI principles). ● Expertise in SQL and designing/optimising relational database schemas. … interest in, the following or similar technologies and concepts is highly valuable: ● Backend: Java, Spring, Hibernate, multi-threading/concurrency, Quarkus/Micronaut. ● Frontend: JavaScript, TypeScript, React, D3.js, SVG, CSS. ● Database: SQL (SQL Server, MySQL, Oracle), Data Modelling. ● Infrastructure: Cloud Platforms (Azure, AWS), Git. ● Advanced Topics: AI/LLM (Large ...

experience working effectively within large, enterprise-scale codebases. ● Solid proficiency in Java (deep server-side development and platform architecture familiarity). ● Strong experience with JavaScript, TypeScript and React (front-end development, with an interest in UX/UI principles). ● Expertise in SQL and designing/optimising relational database schemas. … interest in, the following or similar technologies and concepts is highly valuable: ● Backend: Java, Spring, Hibernate, multi-threading/concurrency, Quarkus/Micronaut. ● Frontend: JavaScript, TypeScript, React, D3.js, SVG, CSS. ● Database: SQL (SQL Server, MySQL, Oracle), Data Modelling. ● Infrastructure: Cloud Platforms (Azure, AWS), Git. ● Advanced Topics: AI/LLM (Large ...

e.g. you understand colour palettes and content hierarchy At least 3 years' of experience building corporate WordPress sites Good understanding of HTML, CSS, and JavaScript ...

e.g. you understand colour palettes and content hierarchy At least 3 years' of experience building corporate WordPress sites Good understanding of HTML, CSS, and JavaScript ...

progression to VCF9) Provide technical leadership across vSphere, vSAN, NSX, vDefend and Aria Suite Drive automation-first approaches using Aria Automation, PowerShell, Python or JavaScript Support upgrades, optimisation and lifecycle management of VCF platforms Engage directly with clients, providing trusted technical advisory and design authority Produce high-quality architecture designs ...

progression to VCF9) Provide technical leadership across vSphere, vSAN, NSX, vDefend and Aria Suite Drive automation-first approaches using Aria Automation, PowerShell, Python or JavaScript Support upgrades, optimisation and lifecycle management of VCF platforms Engage directly with clients, providing trusted technical advisory and design authority Produce high-quality architecture designs ...

development tools A creative, curious mindset and a genuine interest in emerging technology and AI Has some experience with backend logic, APIs, or scripting (JavaScript or Python) Comfort working with ambiguity and thinking beyond "off-the-shelf" solutions Enjoys learning fast, trying new tools, and working things ...

development tools A creative, curious mindset and a genuine interest in emerging technology and AI Has some experience with backend logic, APIs, or scripting (JavaScript or Python) Comfort working with ambiguity and thinking beyond "off-the-shelf" solutions Enjoys learning fast, trying new tools, and working things ...

ongoing technical clarification post-kickoff. Requirements 8+ years of experience in web development, engineering, or technical architecture. 5+ years of practical experience in PHP, JavaScript, and CSS development Hands-on technical experience working with WordPress, Shopify and/or Magento Experience in digital agencies or similar service businesses ...

ongoing technical clarification post-kickoff. Requirements 8+ years of experience in web development, engineering, or technical architecture. 5+ years of practical experience in PHP, JavaScript, and CSS development Hands-on technical experience working with WordPress, Shopify and/or Magento Experience in digital agencies or similar service businesses ...

C# Developer/Full Stack Engineer (.Net Core JavaScript) St Albans/WFH to £100k Do you have expertise with C# .Net backend development combined with JavaScript skills? You could be progressing your career in a senior hands-on role at a technology driven trading company that invest in Sports … work from home twice a week in a hybrid model. About you: You have strong C# .Net Core backend development skills You have JavaScript experience, combined with Angular or React You have experience with AWS and microservices You have a thorough understanding of Computer Science fundamentals such as OOP, Design ...

Skills & Experience: Proven experience as a ServiceNow Technical Lead or Senior Developer Strong understanding of ServiceNow architecture and module configuration Expertise in scripting (JavaScript, Glide, APIs, IntegrationHub) Experience with ITSM and ITOM modules (CMDB, Discovery, Event Management) Excellent stakeholder communication and leadership ability ServiceNow certifications (CSA, CAD, CIS – ITSM/ ...

Skills & Experience: Proven experience as a ServiceNow Technical Lead or Senior Developer Strong understanding of ServiceNow architecture and module configuration Expertise in scripting (JavaScript, Glide, APIs, IntegrationHub) Experience with ITSM and ITOM modules (CMDB, Discovery, Event Management) Excellent stakeholder communication and leadership ability ServiceNow certifications (CSA, CAD, CIS – ITSM/ ...

Full Stack Engineer (JavaScript) – Early-Stage Tech Start-Up Remote (UK-based only) | Flexible Hours c£90k + Benefits (Pension, Private Healthcare, Death-in-Service, Equity Potential) Please note: Applicants must be UK-based with full right-to-work. Sponsorship is not available. The Role We're looking … bill syncs, integrations, and personalised experiences. About You You will be a great fit if you: Have 5+ years full-stack experience, with strong JavaScript/TypeScript depth. Are backend-leaning, with deep Node.js and API experience. Have previously worked in early-stage start-ups or very lean engineering teams. ...

Full Stack Engineer (JavaScript) – Early-Stage Tech Start-Up Remote (UK-based only) | Flexible Hours c£90k + Benefits (Pension, Private Healthcare, Death-in-Service, Equity Potential) Please note: Applicants must be UK-based with full right-to-work. Sponsorship is not available. The Role We're looking … bill syncs, integrations, and personalised experiences. About You You will be a great fit if you: Have 5+ years full-stack experience, with strong JavaScript/TypeScript depth. Are backend-leaning, with deep Node.js and API experience. Have previously worked in early-stage start-ups or very lean engineering teams. ...

Full Stack Engineer (JavaScript) – Early-Stage Tech Start-Up Remote (UK-based only) | Flexible Hours c£90k + Benefits (Pension, Private Healthcare, Death-in-Service, Equity Potential) Please note: Applicants must be UK-based with full right-to-work. Sponsorship is not available. The Role We're looking … bill syncs, integrations, and personalised experiences. About You You will be a great fit if you: Have 5+ years full-stack experience, with strong JavaScript/TypeScript depth. Are backend-leaning, with deep Node.js and API experience. Have previously worked in early-stage start-ups or very lean engineering teams. ...

.NET Developer, .NET 10.0 - Social Networking Site - Bishop's Stortford (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is the world's largest social-networking web site … dedicated technical training per year and exposure to cutting edge technologies such as: .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Azure, Bootstrap, Agile and MongoDB. Additionally you will follow an official structured career progression program. Location: Bishop's Stortford, Hertfordshire ...

.NET Developer - Fastest Growing Social Media Firm - St Albans, Hertfordshire (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is on a quest to transform how people discover, view … object orientated (OO) development principles. Our client can provide you with industry recognized training in: .NET 10.0, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Bootstrap and MongoDB. Our client has a flat organization, which means that they believe great ideas can come from anywhere ...

.NET Developer, .NET 10.0, C# 14 - Digital Download Site - Hatfield (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Programmer, Full Stack Engineer, Architect, .NET Developer)With operations in over 20 countries our client has fast become … .NET Core, C# and Azure SQL. You will be trained in all aspects of: .NET 10.0, ASP.NET Core, C# 14, Azure DevOps, Agile, Blazor, JavaScript, React, Multithreading, RESTful, ML.NET, Azure AI, Azure, Bootstrap, Agile and MongoDB. Top performers can expect to receive their first promotion (and pay rise) within ...

.NET Developer - Harpenden (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) After 15 years' experience in the fashion industry, our client has a mission to change the way people … excellent experience of: .NET, .NET Core, C# and Azure SQL. There are opportunities for training into technologies such as: .NET 10.0, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Solid, DRY, LINQ and MongoDB. Their benefits include the following: Bonus (10-15%). Share ...

Head of Engineering/Development (contract) Location: Remote/United Kingdom Type: Contract Rate: Competitive, based on experience We are seeking an experienced Head of Engineering/Development for my clients B2B SaaS organisation. Leading ...