Data Engineer, Marketing

SpaceXSI is hiring a Data Engineer, Marketing to build and own marketing measurement and analysis for performance marketing across channels and audiences. The role works closely with Marketing leadership to advance incrementality testing, media-mix modeling, LTV signal quality, and clean attribution and pipeline sourcing.

Responsibilities

• Build and own the measurement layer for performance marketing, covering economics and performance by channel, campaign, audience, geo, and creative across both PLG and Sales-Led revenue lines.
• Design and run incrementality tests (geo, audience, and conversion lift) with channel owners, using results to inform budget shifts and calibrate attribution beyond reporting.
• Stand up and maintain a media-mix model (MMM), and combine it with test results to answer allocation questions including which channels to scale, which to reduce, and where saturation is occurring.
• Own the quality of the predictive LTV signal sent to Meta, Google, and other networks by validating against realized revenue, detecting drift and breakage early, and partnering with Data and Engineering to improve it.
• Maintain a clean separation between pipeline source and campaign attribution, ensuring self-reported source, promo codes, click-based attribution, and CRM pipeline each provide distinct answers without double counting revenue.

Requirements

• 7+ years of experience in marketing analytics, marketing science, or data science supporting paid acquisition.
• Strong SQL and Python skills, with comfort building data pipelines and predictive models.
• Experience running hold-out or incrementality tests and working with MMM and attribution models in production, with understanding of their limitations.
• Understanding of how ad platforms report, optimize, and ingest conversion signals, and ability to evaluate platform-reported numbers critically.
• Clear communication with channel managers, Finance, and leadership, with honesty about what the data does and does not support.
• Self-directed approach and comfort owning ambiguous problems end to end.

Technologies

• SQL
• Python

About the Role

The Data team at SpaceXSI is a small team that works across the company to inform business and product decisions. This role is the first dedicated hire for marketing-focused data work, sitting within the central Data team and partnering directly with Marketing leadership.

Performance Marketing at SpaceXSI supports scaled acquisition across 10+ channels for Grok, Grok Bot, and the broader portfolio of AI products, serving consumer, SMB, startup, and enterprise audiences. The position focuses on guiding where the next dollar goes as paid acquisition scales, while establishing foundations for a marketing data capability.

Location

San Francisco, CA (onsite)