CRO Optimisation Engineer (Singapore, Singapore)

Sonova
Singapore
Full timeFunction: Product ManagementSkills: ["Debugging","Performance optimization","Technical QA","Cross-browser compatibility","Collaboration"]

Build and deploy A/B, multivariate, and personalization experiments using Optimizely, writing clean, high-performance client-side and server-side code to bypass release bottlenecks. Engineer lightweight scripts that prevent performance issues like flickering and protect Core Web Vitals, while ensuring responsive, cross-browser behavior. Own pre-launch technical QA, advanced analytics event tagging, and integrations for tools such as FullStory and Qualtrics.

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FursaFursa
Sonova
Sonova
12 hours ago

CRO Optimisation Engineer (Singapore, Singapore)

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 12 hours agoStatus: Live

Job Summary

Build and deploy A/B, multivariate, and personalization experiments using Optimizely, writing clean, high-performance client-side and server-side code to bypass release bottlenecks. Engineer lightweight scripts that prevent performance issues like flickering and protect Core Web Vitals, while ensuring responsive, cross-browser behavior. Own pre-launch technical QA, advanced analytics event tagging, and integrations for tools such as FullStory and Qualtrics.
Location: Singapore
Employment Type: Full time
Job Function: Product Management
Seniority: Mid level

Key Responsibilities

  • •Develop and configure A/B, multivariate, and personalization tests in Optimizely using custom JavaScript, HTML, and CSS.
  • •Ensure optimisation scripts are lightweight and high-performing, preventing flickering and performance degradation.
  • •Implement responsive, cross-browser compliant experimental variants across device breakpoints.
  • •Partner with analytics specialists to deploy custom event tracking, data layer pushes, and analytics configurations.
  • •Lead technical QA and browser testing for all variant builds before launch, including integration and tagging for FullStory and Qualtrics.

Key Requirements

  • •3+ years of front-end development experience focused on digital optimization, UX engineering, or conversion/growth marketing.
  • •Experience writing sophisticated custom JavaScript and CSS modifications within enterprise experimentation platforms (Optimizely or similar).
  • •Strong debugging skills for complex front-end DOM manipulation and cross-browser styling anomalies.
  • •Hands-on configuring analytics event tracking, data layers, and custom tag variables.
  • •Expert knowledge of native JavaScript, semantic HTML, CSS pre-processors, and asynchronous coding, plus web performance optimization concepts.
Experience:Digital optimizationUX engineeringConversionA/B testingPersonalization
Skills:DebuggingPerformance optimizationTechnical QACross-browser compatibilityCollaboration
Tech Stack:OptimizelyJavaScriptHTMLCSSCSS pre-processorsCore Web VitalsDOMFullStoryQualtricsHotjarGA4Data layer

Company Brief

Sonova
Designs, manufactures, and distributes hearing care solutions including hearing aids, cochlear implant accessories, and wireless communication devices, serving audiologists and consumers worldwide through clinics, retail networks, and distribution partners.
Industry: Medical Devices
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Public Company
Valuation: Public Company (Market Cap in USD)
Funding: IPO / Publicly Listed
Headquarters: Stäfa, Switzerland
Founded: 1947
Website