Marketing Backend Engineer

Labhouse is a fast-growing startup that builds, launches, and scales its own AI & Productivity Apps, operating under a subscription-based business model.

Based in Barcelona, Labhouse was founded by Andrés Bou and Horacio Martos (Co-Founders of SocialPoint).

We operate at the intersection of mobile technology, AI, and product-driven growth, with a strong focus on experimentation and performance.

Responsibilities:

• Own the end-to-end attribution and signals system, becoming the company’s expert driving technical decisions and best practices across the organization
• Implement and improve attribution models (Appsflyer, GA4, custom server-side) ensuring it remains accurate and reliable.
• Design and maintain server-to-server integrations with ad networks (Meta, Google Ads, ASA, TikTok, Snapchat).
• Ensure monitoring, QA, and debugging of discrepancies between internal data and ad platforms.
• Continuously improve attribution accuracy and signal quality, through custom pipelines, experimentation, monitoring and debugging of discrepancies.
• Own the long-term evolution of the platform, making thoughtful architectural and prioritization decisions that balance business impact, scalability, reliability and maintainability.

About You:

Technical expertise:

• Strong knowledge of attribution / tracking mechanisms ( pixels, UTMs, ID-based matching, MMPs, SRN, SKAN, W2A, etc.)
• Previous experience enriching and sending signals from mobile apps to Ad Networks to optimize campaign performance (Meta CAPI, TikTok CAPI, Google Ads API, etc)
• Proven experience with REST APIs, webhooks, API integrations and serverless environments.
• Solid knowledge of SQL/NoSQL databases.
• Proficiency in backend technologies such as TypeScript, Python, and Go.
• High ownership and proactivity
• Experience working in fast-growing, product-led organizations, balancing speed, scalability, and reliability in ambiguous environments

Problem-solving and product focus:

• Excellent problem-solving and analytical skills, with the ability to resolve complex technical challenges.
• Eye for detail and a product-first mindset, with a passion for creating exceptional user experiences.
• Self-driven, entrepreneurial attitude with the ability to work autonomously and take ownership of projects.

Communication:

• Good level of spoken and written English.
• Ability to collaborate effectively with cross-functional teams, including engineering, product, and marketing.

What we Offer:

• Remote work from anywhere in Spain. If you are based in Barcelona, we would love for you to join us at the office (Barcelona Tech City) at least two days a week.
• Flexible working hours.
• Competitive compensation
• High-end equipment for your development.
• Permanent contract with competitive compensation.
• A young and top entrepreneurial team in a dynamic startup environment.
• Opportunity to lead, grow, and take on big challenges.
• Work with cutting-edge technologies, including the chance to integrate AI models into new apps.

Hiring Process

• TA Interview – Initial conversation to get to know each other and understand your background.
• CEO / Product Team Interview – Deep dive into your product thinking, experience, and fit with the team.
• Technical Case – Practical exercise to assess your product, analytical, and strategic capabilities.
• Final Interview – Final conversation to ensure alignment on expectations, culture, and role fit.