Job Description

We are seeking a Senior Optimizely Engineer to lead experimentation, personalization, and optimization initiatives across our digital platforms. This role is responsible for designing, developing, and scaling A/B tests and feature experiments using Optimizely, while closely partnering with product, UX, analytics, and engineering teams to drive data‑backed decisions and measurable business outcomes.

Key Responsibilities

Experimentation & Optimization

• Design, build, and manage A/B, multivariate, and feature flag experiments using Optimizely (Web, Full Stack, Feature Experimentation).
• Partner with product and UX teams to translate hypotheses into well‑structured experiments.
• Ensure experiments are statistically sound, scalable, and aligned with business goals.
• Analyze experiment results and clearly communicate insights to stakeholders.

Engineering & Architecture

• Implement Optimizely SDKs and APIs across web and server‑side platforms.
• Ensure clean, modular, and performant experiment code.
• Integrate Optimizely with analytics tools (Google Analytics, Adobe, Segment, Amplitude, etc.).
• Manage feature flags and progressive rollout strategies safely in production.

Personalization

• Implement audience targeting, personalization rules, and recommendation strategies.
• Leverage customer data to drive contextual and behavioral experiences.

Governance & Best Practices

• Define experimentation best practices, standards, and documentation.
• Ensure compliance with performance, accessibility, security, and privacy standards.
• Mentor junior engineers and provide code reviews and technical guidance.

Collaboration & Leadership

• Act as the technical SME for Optimizely across the organization.
• Work cross‑functionally with Product, Design, Marketing, Analytics, and Engineering.
• Influence roadmap decisions using experimentation insights.

Required Qualifications

• Strong experience with Optimizely (Web Experimentation, Full Stack, Feature Flags)
• Proficiency in JavaScript, TypeScript, and modern frontend frameworks (React, Angular, or Vue).
• Experience with backend languages (Node.js, Java, .NET, or similar).
• Solid understanding of A/B testing methodology, statistics, and experiment design.
• Experience integrating with analytics and data platforms.
• Strong knowledge of web performance, CI/CD pipelines, and version control (Git).
• Ability to explain technical concepts to non‑technical stakeholders.

Preferred Qualifications

• Optimizely certification(s).
• Experience with personalization engines and CDPs.
• Exposure to experimentation at scale (high‑traffic platforms).
• Experience with cloud platforms (Azure, AWS, or GCP).
• Familiarity with GDPR, consent management, and privacy‑first experimentation.

Soft Skills

• Strong analytical and problem‑solving skills.
• Excellent communication and stakeholder‑management abilities.
• Ownership mindset with attention to detail.
• Ability to balance speed, quality, and experimentation rigor.