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360 Resourcing Solutions Logo 360 Resourcing Solutions · IT - Software Development

Senior Optimizely Developer

United Kingdom, London · Job Posted March 18, 2026
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Job Description

The Senior Optimizely Developer at Candyspace takes full ownership of complex development workstreams, delivering high-quality solutions across our enterprise client portfolio. Operating with a high degree of autonomy, you will be expected to make sound technical decisions, guide less experienced developers, and contribute meaningfully to architecture and delivery quality across projects.

Job Responsibility

  • Deliver robust, scalable Optimizely CMS solutions independently across the full development lifecycle
  • Take technical ownership of workstreams and features within larger client programmes
  • Collaborate closely with the Lead Developer and Principal Solutions Architect to validate technical approaches and contribute to solution design
  • Conduct and actively participate in code reviews
  • Integrate Optimizely solutions with third-party platforms and services
  • Contribute to the development and documentation of coding standards, component libraries, and reusable patterns
  • Support project managers and delivery leads with technical input during planning, estimation, and risk identification
  • Mentor midweight developers

Requirements

  • Minimum 4 years of .NET web development experience
  • At least 2 years working directly on Optimizely CMS implementations
  • Strong proficiency in C#, .NET Core/Framework, ASP.NET MVC, and Razor
  • Solid working knowledge of Optimizely CMS architecture, content modelling, and development patterns
  • Proficiency in HTML5, CSS3, and modern JavaScript (ES6+)
  • Understanding of RESTful API design and integration patterns
  • Practical experience with cloud platforms (Azure or AWS)
  • Exposure to CI/CD pipelines and DevOps practices
  • Familiarity with performance optimisation techniques and security best practices including OWASP guidelines
  • Experience working in agile delivery teams, contributing to sprint planning, technical estimation, and retrospectives
  • Strong communication skills
  • Proactive and solutions-focused
  • Collaborative team member
  • Commercially aware
  • Committed to continuous improvement
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