Full Stack Developer

Summary

Join Leadtech's MarTech/AdTech team as a highly skilled Full Stack Developer. You will drive the technical implementation of marketing attribution pipelines, landing page experiences, and network signaling integrations, working closely with marketers, data scientists, and product managers. Build scalable tools and solutions for data-driven growth, focusing on attribution system development, landing page infrastructure, network signaling & API integration, and data flow management. Responsibilities include implementing attribution models, building high-performance landing pages, setting up server-to-server postbacks, and working with data teams to manage campaign data. You will also establish automated testing and monitoring for performance. This role requires strong front-end and back-end skills, experience with attribution and ad tech platforms, and excellent communication skills.

Requirements

• Strong knowledge of React, Next.js, or Vue.js
• HTML5, CSS3, Tailwind/SCSS, and client-side performance optimization
• Integration of tracking scripts (Meta Pixel, Google Tag Manager, TikTok Pixel, etc.)
• Node.js, Python, or Go for building APIs and middleware
• REST & Webhook-based architecture; experience with server-side tracking
• Familiarity with serverless functions (AWS Lambda, Cloud Functions)
• Experience with SQL/NoSQL (PostgreSQL, MongoDB)
• Git, CI/CD pipelines, Docker
• Cloud services: AWS / GCP / Vercel / Netlify
• Deep understanding of mobile/web attribution (SKAN, MMPs, cookie-based, UTM-based)
• Prior experience with Appsflyer, Adjust, or Branch
• Familiarity with ad platform APIs (Meta, Google Ads, TikTok, etc.)
• Understanding of postback systems, event mapping, and event prioritization
• Ability to translate marketing goals into scalable technical solutions
• Strong communication and cross-functional collaboration skills
• Problem-solver mindset with a bias for action and testing
• Proactive ownership over QA and reliability of data pipelines

Responsibilities

• Implement and maintain attribution models using tools like Appsflyer, Adjust, GA4, or custom server-side setups
• Develop back-end systems for web-to-app attribution, postback routing, and conversion event handling
• Build and maintain high-performance landing pages optimized for performance, support CRO A/B testing, and analytics tracking
• Integrate dynamic content, UTMs, and tracking pixels for multiple campaigns and traffic sources
• Ensure fast load speeds, responsive design, and A/B testing compatibility
• Set up server-to-server postbacks for networks like Meta, Google Ads, TikTok, Snapchat, etc
• Collaborate with marketing platforms to ensure accurate data flows and real-time event signaling
• Build APIs and middleware for event ingestion and delivery to third-party networks
• Work with data teams to structure and pipeline campaign data into warehouses like BigQuery, Snowflake, or Redshift
• Ensure event deduplication, data integrity, and alignment with marketing KPIs
• Establish automated testing, monitoring, and alerting for attribution and landing page performance
• Debug mismatches between internal systems and ad platforms

Preferred Qualifications

• Experience with Marketing Automation tools (HubSpot, Braze, Klaviyo)
• Understanding of privacy regulations (GDPR, CCPA) and tracking implications
• Experience with CDPs like Segment, RudderStack, or mParticle
• Familiarity with feature flagging and personalization frameworks

Benefits

• Competitive salary and stock options
• Remote-friendly environment with flexible working hours
• Access to top-tier ad budgets, tools, and learning resources
• A high-impact role at the heart of marketing, product, and engineering
• Growth and career development
• Work-Life balance
• 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!
• Free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views
• Ticket restaurant and nursery vouchers, paid directly from your gross salary