MarTech Backend Developer, leadtech, ES

We are looking for a MarTech Backend Developer to strengthen our Marketing Technology & AdTech team. This role is focused on backend engineering with a direct impact on campaign attribution, tracking, data flows, and integrations with advertising platforms.

You will collaborate with performance marketers, analysts, and product teams to ensure accurate campaign measurement, reliable data pipelines, and scalable technical infrastructure.

Although this is primarily a backend role, you will occasionally work with frontend tasks (tracking scripts, basic landing page support, A/B test setup).

Key Responsibilities

Backend / Infrastructure (main focus):

• Design and maintain server-to-server integrations with ad networks (Meta, Google Ads, TikTok, Snapchat).
• Build APIs and middleware for event ingestion and delivery.
• Develop and maintain data pipelines (API/CSV → SQL/NoSQL databases → warehouses like BigQuery, Redshift, Snowflake).
• Implement serverless functions (AWS Lambda, Google Cloud Functions, or equivalent).
• Ensure monitoring, QA, and debugging of discrepancies between internal data and ad platforms.
• Work with Git, CI/CD, and cloud infrastructure (AWS / GCP / Vercel / Netlify).

Attribution & Tracking:

• Implement attribution models (GA4, Appsflyer, Adjust, or custom server-side).
• Manage event deduplication, postbacks, and tracking flows.
• Integrate and troubleshoot tracking scripts (Meta Pixel, GTM, TikTok Pixel).

Frontend:

• Support and maintain basic landing pages (responsive layout, UTMs, CRO testing).
• Add and debug tracking/analytics scripts.