About this role
Salary: £63,000 - 103,000 per year
Requirements: ~8+ years of experience in software engineering, flexible depending on experienceStrong fundamentals in software design and engineeringExperience with C# and .NET, and React on the frontendExperience with CMS platforms, content modelling, or similar domainsExperience building and operating cloud-based systemsComfortable using AI tools in the daily workflow for problem solving, learning, and improving code quality and delivery speed, with the ability to guide AI-assisted development using structured instructions to generate code in a controlled and maintainable wayInterest or experience in leveraging AI agents to further enhance productivityStrong testing mindset, with a focus on building reliable, well-tested systems and maintaining high code qualityComfortable working in cross-functional, agile teamsStrong communication and collaboration skillsBachelors degree in Computer Science or engineering preferred, or equivalent work experience Responsibilities: Design, build, and maintain scalable, maintainable software systemsDevelop CMS features, add-ons, APIs, and integrations with external systemsContribute to system design and architectural decisionsEnsure product quality through automated testing and operational best practicesOwn services in production, including monitoring and incident handlingCollaborate with product managers, designers, and engineers to deliver features end to endConsider real-world usage and customer needs in technical decisionsMentor other engineers and contribute to knowledge sharingParticipate in hiring and help grow the engineering team Technologies: AIAI AgentsC#CloudCMSFrontendRESTReactASP.NETAzureDXPFigmaFlowSupportLLMMarketingPaaSRAGSQLUX UI Design More:
We are Optimizely, a global MarTech company with 1,600+ Optimizers across 12 global offices, serving 10,000+ brands including H&M, PayPal, and Zoom. We build AI-powered content creation, a world-class CMS, and an experimentation platform that helps modern marketers create, manage, publish, and optimize digital experiences. Our CMS team in the UK works on a core part of our platform, including extensible CMS capabilities, integrations, forms, Language Manager, AI tools and agents, REST APIs, and connections to other Optimizely products and external systems. We offer a London office, a hybrid setup, and fully remote working for UK-based candidates outside London, within a collaborative global environment that values open communication, shared ownership, and work-life balance.
last updated 36 week of 2026