Overview
We are looking for a Senior MarTech Specialist with strong expertise in web tracking projects, ideally with experience in companies where subscriptions are the main revenue stream.
This is not a “ticket executor” role. We want someone who owns the tech side of web tracking, challenges assumptions, and builds scalable, future-proof solutions.
And one more thing: we don’t care what you studied. Master’s in Advanced Translation? Great. Law & Politics double degree? Fantastic. Finance vocational training? Perfect. Degrees are nice, but here we care about your skills, curiosity, and hands-on experience.
Location
Madrid, Madrid
Responsibilities
(The original description emphasizes ownership of the web tracking tech, challenges assumptions, and builds scalable solutions. This section preserves that focus.)
* Own the tech side of web tracking for subscription-based businesses.
* Lead web tracking projects across client-side and server-side implementations.
* Collaborate with SEO, analytics, and marketing teams to ensure accurate attribution and data quality.
Requirements
Must-have
* Deep expertise in Google Tag Manager (client-side + server-side) with proven experience implementing and maintaining S2S GTM setups.
* Experience with web projects, ideally subscription-based businesses.
* Hands-on experience with online payments (Stripe, card gateways) and the ability to capture and process payment data for analytics and attribution.
* Experience with GA4 and Amplitude. Knowledge of Adobe Analytics (or similar enterprise platforms) is a plus — but GTM expertise is mandatory.
* Strong background in web tagging and tracking (events, funnels, data layers).
* Solid understanding of how Ad Networks work — e.g., the difference between Campaign / Ad Group / Ad, how CAPI or parameter-based tracking works, and how UA teams rely on these setups. You don’t need to run campaigns, but you need to speak their language.
* Solid understanding of Technical SEO fundamentals (indexation, sitemaps, canonicals, hreflangs, Core Web Vitals).
* Experience working with SEO teams. Many tracking challenges start with landing pages, organic funnels, or GSC, so speaking the same language helps.
* Awareness of AEO (Answer Engine Optimization) — understanding how search and discovery through LLMs (ChatGPT, Perplexity, etc.) works, so you can help evaluate how much value we’re getting from these appearances and how we attribute them.
* Experience with CMPs / consent management tools (e.g., Didomi, OneTrust, Usercentrics, or similar). You’ve worked hands-on with Legal teams, verified implementations in DevTools, and ensured that signals are firing correctly. Concepts like GDPR, DMA, Consent Mode V2, Purposes, Vendors, Notice are not foreign to you.
* Practical experience with cloud systems (ideally GCP: BigQuery, Cloud Functions, Pub/Sub, APIs).
* SQL proficiency to query and consume data in a Data Warehouse (e.g., BigQuery, Databricks).
* Fluent English (written & spoken).
Nice-to-have
* Python (or other scripting languages) for automation.
* Data Engineering / Analytics Engineering exposure (e.g., Airbyte, dbt, Dataform).
* Experience with Affiliation platforms (Impact, Rakuten, Awin, or similar) and AdServers (Google Campaign Manager, Xandr, Smart, Adform).
Benefits
* Growth and career development: internal training and annual budget for external learning opportunities.
* Work-Life balance: flextime and the option of full remote or Barcelona office; summer schedule adjustments.
* Comprehensive benefits: competitive salary, full-time permanent contract, private health insurance, 25 days of vacation plus birthday off.
* Unique Perks: office amenities in Barcelona and additional benefits like meal vouchers and nursery vouchers.
Join us in an environment where you’re free to innovate, learn, and grow alongside passionate professionals. At Leadtech, you’ll tackle exciting challenges and be part of a vibrant team dedicated to delivering exceptional user experiences.
Equal Employment Opportunity
Leadtech is an Equal Employment Opportunity (EEO) Employer. We encourage applications from people with diverse backgrounds and experiences. We welcome applicants regardless of race, gender, age, religion, nationality, sexual orientation, and/or disabilities. All we need is your energy, skills, and willingness to contribute to a great project.
Location: You may work fully remote or from our Barcelona office. If you choose our office, it is located in Barcelona’s Blue Building with views and office perks.
The personal data you provide will be used to manage your candidacy for the corporate selection processes. If you wish, you can exercise your rights of access, rectification or cancellation by contacting us at with a document that validates your identity.
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