Optimizely CMS Developer

Salary: £50,000 - 60,000 per year

Requirements:

• Commercial experience developing with Optimizely CMS
• Strong C# and .NET development experience
• Experience with ASP.NET Core and MVC
• Experience building and maintaining CMS-driven websites
• Good understanding of HTML5, CSS3 and JavaScript
• Experience with SQL Server
• Experience consuming and developing REST APIs
• Familiarity with Git version control
• Strong problem-solving and analytical skills
• Excellent communication and stakeholder engagement skills
• Commercial experience with Umbraco CMS is desirable
• Experience with additional CMS platforms is desirable
• Knowledge of Optimizely Commerce is desirable
• Experience with headless CMS architectures is desirable
• Experience using Azure and Azure DevOps is desirable
• Understanding of CI/CD pipelines is desirable
• Experience with React, Vue.js or modern JavaScript frameworks is desirable
• Knowledge of Search & Navigation is desirable
• Experience with performance optimisation and website security is desirable
• Familiarity with Azure App Services and cloud-hosted solutions is desirable
• Experience working within Agile/Scrum environments is desirable

Responsibilities:

• Design, develop and maintain websites and web applications using Optimizely CMS
• Develop and customise content management solutions to meet client requirements
• Work with Umbraco CMS projects where required
• Build reusable, scalable and maintainable code following industry best practice
• Develop integrations with third-party systems, APIs and enterprise platforms
• Collaborate with UX/UI Designers to deliver responsive, user-friendly websites
• Participate in technical design sessions and solution architecture discussions
• Perform code reviews and mentor junior developers where appropriate
• Diagnose and resolve software defects and performance issues
• Produce technical documentation and contribute to continuous improvement initiatives
• Support testing, deployment and post-implementation activities
• Work collaboratively within Agile development teams

Technologies:

• ASP.NET
• Azure
• C#
• CI/CD
• Cloud
• CMS
• DevOps
• Git
• HTML5
• Support
• JavaScript
• MVC
• REST
• React
• SQL
• Security
• Umbraco
• Vue
• Web
• UX UI Design

More:

We are PSP IT, an award-winning digital transformation consultancy delivering innovative technology solutions across the UK. We specialise in bespoke software development, digital transformation, enterprise applications, integration and managed services. As our client portfolio continues to grow, we are looking for an experienced Optimizely Developer to join our talented development team in Spalding, Lincolnshire. This is a full-time, permanent, office-based role offering a competitive salary, company pension, ongoing professional development and training, free on-site parking, a modern office environment, supportive team culture and long-term career progression opportunities. You will work on enterprise-level websites, digital platforms and customer experience solutions for a wide range of clients in a close-knit team that values innovation, collaboration and technical excellence.

last updated 31 week of 2026