Principal Software Engineer

  • Harnham
  • Oakland, California
  • 05/25/2026
Full time Information Technology Telecommunications

Job Description

Principal / Staff Software Engineer

Oakland, CA - Hybrid (3 days/week onsite)


The Opportunity

We're partnering with a profitable, rapidly growing platform at the intersection of healthcare, education, and AI. This is a rare opportunity to join as a founding-level engineer alongside a newly appointed CTO, shaping the next generation of intelligent systems in a high-impact, data-rich environment.


The product is already widely adopted by physicians across the U.S., with a strong network effect and a multi-sided marketplace connecting medical professionals, content creators, and enterprise partners. The next phase focuses on AI-driven intelligence, personalization, and workflow automation at scale.


Why This Role Exists

A new CTO has just joined and is building out a small, elite engineering team from the ground up. This is the first senior IC hire, with significant influence over architecture, technical direction, and product innovation.

You'll operate in a true 0 1 to 1 N environment:

  • Early stage: rapid prototyping, experimentation, and validation
  • Scaling phase: productionizing systems and collaborating with a distributed team

This is an evergreen mandate to hire exceptional engineers (multiple hires planned) - the bar is extremely high.


What You'll Do

This is a deeply hands-on role with full ownership across the stack:

  • Design and build scalable systems end-to-end - from architecture to production
  • Develop agentic AI workflows leveraging LLMs and proprietary datasets
  • Build intelligent knowledge systems that operate on high-volume, domain-specific data
  • Drive growth and engagement engineering, including personalization and marketing systems
  • Partner closely with product and leadership to validate new ideas directly with users
  • Collaborate cross-functionally and with a high-performing international engineering team


Tech Stack

  • Backend: Python, Django
  • Frontend: React
  • Cloud: AWS
  • Database: PostgreSQL
  • AI/ML: OpenAI + emerging agent frameworks


What We're Looking For

  • Principal/Staff-level engineer with a builder mindset
  • Proven experience owning systems end-to-end in ambiguous environments
  • Strong backend or full-stack capabilities (Python preferred)
  • Experience designing data-intensive or knowledge-driven systems
  • Familiarity with LLMs, agent frameworks, or applied AI workflows
  • Ability to move between rapid experimentation and product ionization


Nice to have:

  • Experience with healthcare or regulated datasets
  • Exposure to growth engineering or marketing systems


Why This Role Stands Out

  • Founding engineer-level impact with direct access to the CTO
  • Opportunity to build AI-first systems from scratch in a complex domain
  • Already-scaled product with millions of data points - not a greenfield gamble
  • Rare combination of profitability, scale, and technical ambition

Compensation

  • Base salary: $280K - $350K (flexible up to $400K for exceptional candidates)
  • Bonus + meaningful equity

Additional Details

  • Location: Oakland, CA (3 days onsite: Mon/Wed/Fri)
  • Visa: H1B transfers supported


If you're interested in building high-impact AI systems in a real-world, data-rich environment - while working in a small, elite team - this is an exceptional opportunity to do so.