Full Stack Engineer – Growth, Marketing

Treatwell

Full Stack Engineer building technical foundations for Growth and Marketing at Treatwell. Improving discoverability and user-facing products across various markets with cross-functional collaboration.

Posted 7/31/2026full-timeRemote • 🇪🇸 SpainMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in owning production-grade web applications end-to-end, with a strong focus on user experience and data-driven decision-making. Capable of translating marketing needs into technical solutions while maintaining high quality standards and effective collaboration with cross-functional teams.

Highest-signal resume keywords

End-To-End Web Application OwnershipData-Driven Decision MakingProduct MindsetSEO ExperienceAI-Assisted Development Tools

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Web Application DevelopmentDatabase Schema DesignUser Interface DesignExperimentation FrameworksAnalytics ImplementationPerformance OptimizationGrowth EngineeringTechnical Problem Solving

Soft Skills

Cross-Functional CollaborationCommunication SkillsAdaptability in Fast-Paced Environments

Tools & Technologies

DevOps PracticesTesting FrameworksAnalytics ToolsSEO ToolsAI Development Tools

Industry Keywords

Customer AcquisitionCustomer RetentionGrowth MarketingProduct DevelopmentTechnical Quality Standards

About the role

Key responsibilities & impact

Growth and marketing engineering - build and evolve the technical foundations that support customer acquisition, activation, and retention across Treatwell's markets
Discoverability - improve how search engines and users understand Treatwell's marketplace, without turning the role into a pure SEO implementation function
Experimentation and measurement - instrument your work, support testing frameworks, and help teams validate ideas with data before scaling them
Product surfaces - ship user-facing improvements to landing pages, discovery journeys, and conversion flows, owning the work from problem framing through production
Platform quality - own your services end-to-end, from architecture through deployment, with a DevOps mindset baked in
Cross-functional clarity - translate growth and marketing opportunities into clear engineering work, challenge scope when needed, and keep quality standards high

Requirements

What you’ll need

You have proven experience owning production-grade web applications end-to-end, and understand that the best technical decisions come from deeply understanding the problem - not just the code (mid/senior level)
You own features end-to-end - from database schema to UI, without needing a handoff
You think in systems and trade-offs, not just tickets - you spot the upstream cause, not just the downstream symptom
You have a product mindset - you think about the person using what you build, ask why before how, and push back when something doesn't make sense
You're data-driven and hypothesis-led - you instrument your work, measure impact, and use evidence to make decisions
You can partner with non-engineering stakeholders, turning ambiguous growth or marketing needs into sensible technical options
You will act as the key technical partner for marketing stakeholders, evaluating the feasibility of their requests, managing expectations, and finding the right trade-off between business speed and technical quality (TBC).
You are able to make progress in evolving or complex domains while collaborating to create clarity - growth work often moves fast, and you know how to navigate that without getting paralysed
Experience with SEO, experimentation, analytics, performance, or growth-related product areas is a plus
Experience with AI-assisted development tools such as Claude, Cursor, or similar - and clear opinions about where they genuinely add value is a plus
You can communicate fluently in English
**You are based in any city within Italy or Spain, with a valid right to work**

Benefits

Comp & perks

28-days holiday, plus bank holidays 🏖️
Monthly £/€40 Treatwell vouchers so you can treat yourself too **💅🏻**
Mental health support through our partnership with Open-Up 🧘🏻
100% remote position 🧑🏻‍💻
Market-specific benefits that will be discussed in the interview process