Email Growth Manager

Ruby Labs Ltd.

Job Overview

Location

European Union

Job Type

Full-time

Full Job Description

📋 Description

• As an Email Growth Manager at Ruby Labs Ltd., you will drive email marketing as a high-impact conversion channel across all brands by leading experimentation and growth initiatives, reporting directly to the Marketing Director.
• Your day-to-day responsibilities include generating hypotheses, designing and launching A/B and multivariate tests, analysing results with statistical rigour, rolling out winning experiments at scale, monitoring competitors’ email strategies, conceptualising new email sequences, owning key growth KPIs, and collaborating with email, marketing, and data teams to ensure experiments are measurable and actionable.
• Ruby Labs is a leading tech company creating innovative consumer products in health, education, and entertainment, with a culture focused on building, growing, and winning through data-driven experimentation and ambitious execution.
• In this role, you will deepen your expertise in conversion optimisation, experimentation frameworks, AI-powered growth tactics, and cross-functional collaboration, while making a measurable impact on sign-ups, revenue per email, and overall email marketing performance across multiple digital products.

🎯 Requirements

• Minimum 3–5 years of experience in email marketing, growth marketing, or CRO with a track record of improving conversion metrics through experimentation
• Solid experience with Customer.io or equivalent email automation platforms (Klaviyo, Mailchimp, Brevo)
• Proficiency in Mixpanel or similar analytics tools for experiment tracking and conversion analysis
• Strong understanding of A/B testing methodology, statistical significance, and experiment design
• Experience working with subscription-based or direct-to-consumer digital products
• Strong command of AI tools for integration into daily workflows including copy generation, ideation, competitive research, and data analysis

🏖️ Benefits

• Remote Work Environment: freedom to work from anywhere, anytime
• Unlimited PTO: unlimited paid time off to recharge and prioritize well-being
• Company-provided MacBook: top-notch Apple MacBook for seamless productivity
• Paid National Holidays: paid time off to celebrate and relax
• Flexible Independent Contractor Agreement: autonomy, tax advantages, and freedom to work from anywhere

Skills & Technologies

Ruby

Remote

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Ruby Labs Ltd.

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About Ruby Labs Ltd.

Ruby Labs Ltd. is a London-based product studio that builds and scales consumer subscription mobile and web applications. The company focuses on health, wellness, and productivity verticals, developing apps such as Hint, Able, and the award-winning fitness platform FitCoach. Using data-driven growth and proprietary technology, Ruby Labs rapidly prototypes, launches, and iterates products to serve millions of global users. The team combines engineering, product design, and performance marketing expertise to create sustainable digital businesses. Founded in 2018, Ruby Labs operates a portfolio of self-funded apps, emphasizing user privacy, scientific validation, and long-term customer value.

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