Senior Software Engineer, Data Platform

Plenful • San Francisco, CA

4d • Hybrid

About The Position

Plenful is hiring a Senior Software Engineer to build and improve our data platform that powers our automation engine. You'll operate as the technical owner of this layer — setting direction, contributing to architectural calls, and writing code. This is a hands-on, builder opportunity. Our platform automates complex, multi-step processes in a regulated healthcare domain. The data layer underneath — how we model domain entities, serve rich context to AI-driven automation, and maintain auditability across every decision — is the foundation everything else is built on. The stack is AWS, Postgres, and Python. It needs to be fast, correct, and built to evolve. This is greenfield platform work with real constraints: healthcare compliance, rapid customer growth, and AI systems that depend on the quality of the data you provide them. You'll define core data abstractions, shape how the platform represents and queries its operational world, and build the systems that let feature teams ship with confidence. This role is hybrid.

Requirements

• 7+ years in professional software engineering, building backend or data infrastructure in production.
• Deep expertise in relational databases: schema design, query performance, and data modeling tradeoffs.
• Experience designing and evolving data models in complex, growing systems.
• Experience operating production systems at scale, including incident response and reliability work.
• Ability to code hands-on in backend systems (Python-heavy environment, but language-agnostic).
• Strong reliability instincts: observability, testing, and data integrity.
• Ability to make good decisions with incomplete information — designing data models while the domain is still being codified and product requirements evolve alongside AI capabilities.

Nice To Haves

• Experience in healthcare, fintech, or other compliance-heavy infrastructure environments.
• Background at high-throughput infrastructure companies like Stripe, Brex, or Notion.
• Practical understanding of applied AI systems.
• Comfort in customer-facing technical discussions.

Responsibilities

• Own the design and evolution of the core data model — domain entities, actions, and the audit trail that governs every automated decision.
• Build the data layer that AI agents read from and write to: expressive enough that models can reason over operational context, governed enough for healthcare compliance.
• Define how domain knowledge gets structured, versioned, and queried, laying the groundwork for richer context as the platform matures.
• Establish data contracts and APIs that give feature teams clean, stable interfaces to build against.
• Drive platform reliability as we double our customer base and traffic without losing performance.
• Set technical direction for the data platform in partnership with product and feature team leads.

Benefits

• Full medical, dental, and vision insurance for you and participation for your family
• 401(k) with Company Match — Plenful matches 50% of your first 3% contributed
• Equity — Every full-time employee shares in our success
• Unlimited PTO
• $100/week to cover your midday meals
• $100/month to support your health and well-being
• $100/month for SF and NYC-based employees
• Paid leave to support growing families

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed