Job Description

We’re looking for a hands-on Mid-Level MarTech Specialist with solid expertise in web tracking, attribution, acquisition ecosystems, and subscription-based businesses.

This is not a “ticket executor” role.
We want someone who already understands how modern web acquisition works — from attribution models and browser limitations to GTM server-side setups, consent frameworks, SEO traffic, and raw Ad Network data.

You’ll work closely with Paid UA, SEO, Product, Data, and Engineering teams to build scalable tracking architectures that survive real-world conditions: browser restrictions, consent limitations, signal loss, broken payment flows, inconsistent attribution, and all the other fun things the internet throws at us.

What we care about:

• curiosity,
• problem-solving,
• ownership,
• technical understanding,
• and your ability to make things work in production.

What You’ll Do

• Own and improve tracking implementations across our web properties.
• Work on attribution challenges across Paid, Organic, SEO, CRM, and subscription funnels.
• Build and maintain scalable tracking setups using GTM (client-side and server-side).
• Help improve conversion visibility and signal quality across Ad Networks.
• Collaborate with Paid UA teams to ensure campaigns receive high-quality conversion data.
• Work with SEO teams to understand organic funnels, landing page behavior, and traffic quality.
• Investigate discrepancies between platforms (GA4, Amplitude, Meta Ads, Google Ads, internal BI, etc.).
• Validate implementations directly in DevTools, network requests, payloads, cookies, APIs, and browser storage.
• Support consent-aware tracking implementations alongside Legal and Product teams.
• Use raw data from Ad Networks, analytics tools, and cloud systems to understand attribution and performance.
• Help design scalable event taxonomies and tracking architectures.
• Debug problems end-to-end instead of escalating them endlessly.

Requirements

Must-have: Web Tracking & MarTech

• Strong hands-on experience with web tracking projects in production environments.
• Advanced experience with Google Tag Manager (client-side is mandatory; server-side GTM is a big plus).
• Strong understanding of event tracking, data layers, funnels, attribution, and conversion flows.
• Experience implementing or maintaining server-to-server tracking setups.
• Experience with tools and technologies such as:
• Meta CAPI
• GA4 Measurement Protocol
• Google Ads API
• Conversion APIs
• Server-side tagging
• Direct API integrations
• Understanding of how browser restrictions, consent frameworks, and signal loss impact attribution and optimization.
• Strong understanding of attribution models and how tracking architecture impacts campaign performance.

Acquisition & Growth Ecosystems

• Strong experience working in subscription-based businesses or recurring revenue models.
• Strong understanding of subscription funnels, recurring billing flows, trials, renewals, cancellations, and lifecycle attribution.
• Strong experience collaborating with Paid UA / performance marketing teams.
• Ideal plus: hands-on experience running acquisition campaigns yourself, especially across Google Ads and Meta Ads.
• You understand how Google Ads and Meta Ads work inside-out — from campaign structures and attribution windows to parameter handling, conversion flows, optimization logic, and signal quality.
• Solid understanding of acquisition ecosystems across paid and owned channels.
• Understanding of how Ad Networks work:
• Campaigns
• Ad Sets / Ad Groups
• Ads
• Conversion windows
• Attribution settings
• Parameter-based tracking
• Signal quality
• Ability to work with raw data from platforms such as:
• Google Ads
• Meta Ads
• Google Search Console
• Datadog
• Analytics platforms
• Internal BI systems
• Experience ingesting and working with marketing and acquisition data through APIs and external sources.
• Experience collaborating with Organic Growth / SEO teams is a strong plus.
• Exposure to SEO and Organic Growth tooling and workflows is highly valued, including:
• Google Search Console data ingestion
• Datadog analysis
• APIs from platforms such as Ahrefs or Semrush
• Organic funnel analysis
• Landing page performance analysis

Analytics & Data

• Experience with product analytics platforms such as GA4, Amplitude, Mixpanel, or PostHog.
• Strong SQL skills to query data warehouses like BigQuery or Databricks.
• Practical experience with cloud systems (ideally GCP):
• BigQuery
• Cloud Functions
• Pub/Sub
• APIs
• Ability to identify when a reporting issue is actually caused upstream by tracking or attribution problems.

Consent, Privacy & Signal Quality

• Experience with CMPs / consent management platforms such as:
• Didomi
• Cookiebot
• OneTrust
• Usercentrics
• Familiarity with:
• GDPR
• DMA
• Consent Mode V2
• Vendors / Purposes
• Consent-aware implementations
• Comfortable validating consent behavior directly in DevTools and browser requests.
• Understanding of hashing, normalization, formatting, and match quality concepts related to conversion APIs and attribution systems.

Technical & Debugging Skills

• Comfortable using browser DevTools.
• Ability to inspect:
• network requests,
• payloads,
• cookies,
• local storage,
• request headers,
• API calls,
• tracking discrepancies.
• Hands-on mindset: when something breaks, you debug it yourself.
• Experience with online payment systems (Stripe or similar gateways) and payment attribution flows.

Communication

• Fluent English (written & spoken). Spanish is a plus.

Big Plus

• Strong server-side GTM experience.
• Experience improving Event Match Quality (EMQ) or similar signal quality metrics.
• Python or scripting experience for automation.
• Experience with Data Engineering / Analytics Engineering tools: dbt, Dataform, Airbyte
• Experience with affiliation / affiliate marketing platforms is a strong plus, especially tools such as: impact, Rakuten, Awin
• Experience with technical SEO fundamentals: indexation, sitemaps, canonicals, hreflangs, Core Web Vitals
• Experience with dashboards and BI tools: Looker Studio, Tableau, Power BI
• Experience with CDPs: Segment, Rudderstack, mParticle, Hightouch, Census
• Experience with marketing automation / CRM tools: Braze, Iterable, Customer.io, MoEngage, Brevo, ActiveCampaign.
• Awareness of AEO (Answer Engine Optimization) and traffic attribution from LLM-driven discovery systems.

How We Think & Work

We’d love you to see yourself in these principles, because they’re not just words — they show up in our daily work.

Level up

We grow, and we make our teammates grow. If you discover a better way to structure tracking or a smarter SQL approach, you share it. If Paid UA asks for a new event, you ask “why?” before blindly implementing it.

See it, fix it

We don’t let problems rot.
If conversion tracking breaks on Friday, we don’t wait until Monday to investigate. If GA4 and Amplitude disagree, you dig until you understand why.

Always ahead

Browser updates, cookie changes, privacy frameworks, new APIs, attribution shifts… we stay ahead. You’re the kind of person who reads changelogs before production breaks.

Now means now

If something can be solved today, we solve it today. We value ownership and execution over endless process.

Team spirit

We collaborate.
You help SEO debug a landing page issue. You help Paid UA understand why Meta conversions dropped. And sometimes you also share memes about Google making everyone’s lives harder.

Hands-on

You don’t wait for perfect conditions. Need test data? You create a test flow. Need to validate attribution? You reproduce the journey yourself.

Translator mindset

You can explain technical concepts to marketers. And you can explain acquisition realities to engineers. Both sides leave the conversation understanding each other better

Benefits

Why Join Us

Real ownership

You’ll own projects end-to-end. Not “visibility.” Not “coordination.” Actual ownership.

Room to grow

This team is still scaling. That means a lot of opportunities to expand your impact and responsibilities over time.

Work that actually matters

Tracking, attribution, privacy, SEO, consent, measurement, growth infrastructure — these are core business problems for us, not side tasks.

A team of nerds

We genuinely enjoy this stuff.
Browser changes.
Privacy updates.
Attribution debates.
DevTools investigations.
Sometimes we suffer together too.
But we like solving hard problems.

Your voice matters

A lot. We want people who challenge ideas, explain their reasoning, and improve the way we work. If you prefer staying silent, waiting for instructions, or avoiding ownership… we’re probably not the right fit.

Growth and career development

• At Leadtech, we prioritize your growth. Enjoy a flexible career path with personalized internal training and an annual budget for external learning opportunities.

Work-Life balance

• Benefit from a flexible schedule with flextime and the option of working full remote or from our Barcelona office. Enjoy free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August so you can savor summer!

Comprehensive benefits

• Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services).
• 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days!

Unique Perks

• If you wish to come, in our office in Barcelona you’ll find it complete with free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views.
• Additional benefits include ticket restaurant and nursery vouchers, paid directly from your gross salary.

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

Sounds good? Apply now! We’re looking forward to getting to know you.

Equal Employment Opportunity Employer:

Leadtech is an Equal Employment Opportunity (EEO) Employer, which means we encourage applications from people with different backgrounds, interests, and personal circumstances. Our team welcomes applicants regardless of their race, gender, age, religion, nationality, sexual orientation, gender identity, gender expressión and/or disabilities. All we need is your high energy, skills, and willingness to be a part of a great project!

Location

You'll have the flexibility to choose whether you'd like to come to the office every day, from time to time, or work fully remote. We want you to find the best combination for you.

If you prefer to be surrounded with amazing people, our exceptional office is in Barcelona’s Blue Building, located right on the city's seafront. Besides our stunning views, you’ll enjoy our office perks such as free fruit, snacks, and coffee and you’ll also be able to take part in our Mario Kart and table tennis competitions.

The personal data you provide will be processed in order to manage your candidacy for the corporate selection processes that fit your profile. If you wish, you can exercise your rights of access, rectification or cancellation by writing to our address (Avenida Litoral, 12-14, 5ta planta. Barcelona. 08005) or to the email address protecciondedatos@LeadTech.com.