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Senior Growth Engineer at Apollo.io. Location Information: USA. Your Role & Mission. We’re looking for a . Senior. . Growth Engineer. to join our team and accelerate our product’s growth through rapid experimentation, data analysis, and scalable technical solutions. You’ll work at the intersection of engineering, product, and marketing to optimize funnels, automate growth loops, and implement features that drive measurable impact.. Daily Adventures & Responsibilities. Develop and execute engineering strategies. that enable rapid experimentation and data-driven decision-making. Collaborate cross-functionally. with Product, Marketing, Data Science, and Engineering teams to optimize key growth metrics. Architect and build scalable systems. that support growth initiatives, such as onboarding flows, personalization engines, and viral loops. Implement A/B testing frameworks. and data instrumentation to ensure accurate tracking and measurement of experiments. Leverage automation and machine learning. to optimize user engagement, reduce churn, and personalize user experiences. Ensure technical excellence. through best practices in performance optimization, security, and scalability. Skills & Relevant Experience. Proficiency in full-stack development (e.g., JavaScript/TypeScript, React, Python, RoRm or Node.js) and cloud infrastructure (AWS/GCP). Experience with analytics tools (Amplitude, Mixpanel, Google Analytics) and A/B testing platforms (e.g., Optimizely, LaunchDarkly, Amplitude, Segment, Mixpanel, or Google Analytics). Familiarity with growth frameworks (e.g., Pirate Metrics, viral loops). Excellent leadership, communication, and stakeholder management skills. Experience using AI . Obsession with metrics (LTV, CAC, retention) and rapid iteration. Comfort with ambiguity and bias toward action. Nice-to-Haves. Experience with growth at a startup or scaling product.. Knowledge of SEO, CRM tools (Braze, HubSpot), or marketing automation.. Key Characteristics of Growth Engineers. Entrepreneurial. : Independent, resourceful, and proactive in seeking growth opportunities.. Experimental. : Willing to test hypotheses and iterate on strategies based on real-world feedback.. Data-Driven. : Focused on analyzing data to inform decisions and measure success.. Curious. : Always learning and exploring new technologies and methods to drive growth.. Our tech stack. is React/Redux/NodeJS on the frontend, Ruby/Ruby on Rails/MongoDB/Elasticsearch on the backend, and Kubernetes/Docker/Ansible/Terraform in infrastructure.. Apollo.io Tech Blog. : . Deep dives into engineering, product design, and company-culture stories from the Apollo team, offering behind-the-scenes insight into how Apollo builds and scales its B2B sales platform.