Senior Data Engineer

Leon Capital Group is a multi-billion-dollar holding company that owns and operates businesses across healthcare, real estate, and financial services. We founded, acquire, and scale companies for the long term, backing them with shared capital, talent, and infrastructure while giving each the room to operate and grow. Our portfolio spans provider groups and patient-care platforms, real estate development and investment, and a growing set of financial services businesses.

This role reports to the Chief Innovation Officer and supports every business in the portfolio.

This is a hands‑on data engineering role where the engineer owns the data foundation that AI is built on. Across our portfolio, the same problem keeps surfacing: the data exists but it is fragmented across vendor systems, duplicated, and untrustworthy, and no model or decision tool is better than the data beneath it. This role consolidates the data we already own, cleans and resolves it into one trustworthy record, and stands up the curated, provenance‑tracked layer that predictive and AI workloads depend on.

Consolidating that platform is the gating prerequisite for everything that follows, so this is where you prove the patterns. As that foundation matures, you will continue to be leveraged across different initiatives, each one modernizing or building up its data foundation for AI, reusing the same patterns and discipline rather than reinventing the approach each time.

We want someone energized by both the consolidation grind and the foundation it unlocks: the engineer who treats dirty, duplicated data as the most important problem in the building because every segment, attribution number, and model downstream depends on getting it right.

• Consolidate and harden existing cloud data platforms: re‑enable broken syncs, close single‑points‑of‑failure, and bring infrastructure up to architecture and security standards.
• Design and own the canonical data model and curated marts, built to remain ours regardless of which vendor or CRM sits on top.
• Own master data management end to end: define the canonical entities, set the matching, survivorship, and merge rules that resolve duplicate and conflicting records into one golden record, and govern that record as the single source of truth across systems.
• Run cleansing and identity resolution as a continuous discipline, not a one‑time pass: standardize and validate source data on ingestion, match records across systems by shared keys, and keep the golden record clean so attribution and downstream models stay trustworthy.
• Build ingestion pipelines that pull from heterogeneous, often hostile sources into our schema with full provenance, including vendor servicing output, API feeds, and flat‑file or SFTP partner feeds with no clean API.
• Stand up the curated data layer that AI depends on: clean, well‑modeled marts that feed lead scoring, attribution, next‑best‑action, and other predictive workloads.
• Build validation, monitoring, and lineage so data‑quality issues are caught before they reach models, reports, or decisions.
• Treat the platform as a reusable pattern, standing up each new initiative's own data layer rather than a bespoke build each time, so the foundation scales across the portfolio.
• Enforce the data‑ownership bar in every buy decision: vendor output must land in our canonical structure, in our schema, and remain portable on exit.
• Partner with shared IT and security on regulated‑data handling, secrets management and compliance prerequisites, and document runbooks so the platform can be operated and handed off as it matures.

• 7+ years building data systems end to end, ideally as an early or founding data hire where you owned the whole data function rather than one stage of a large team.
• Deep master data management expertise: you have designed canonical data models, built matching and survivorship logic, and run golden‑record and identity‑resolution programs that held up s is core to the role, not a nice‑to‑have.
• Strong data engineering fundamentals: schema design, ETL and ELT pipeline architecture, and data‑quality and de‑duplication…