Principal Engineer, Architecture

Moon

$320K — $380K *
Enterprise Technology
11 - 15 years of experience
Job Overview by Ladders

Qualifications

  • 12+ years of engineering experience at high-growth startups, serving in a staff or principal capacity.
  • Experience in scaling systems through various company stages successfully.
  • Strong focus on practical design solutions over theoretical concepts, with concrete examples.
  • Deep expertise in distributed systems, data modeling, API design, and security.
  • Proven mentorship abilities, recognized by unsolicited praise from peers.
  • Clear and concise writing skills, able to craft documentation that reduces the need for meetings.

Responsibilities

  • Own the architecture and cross-team integrations of the platform with a focus on performance and security.
  • Take personal responsibility for the hardest engineering challenges and deadlines.
  • Have in-depth knowledge of the application's mechanics, including critical paths and failure modes.
  • Mentor and elevate the engineering team's capabilities through active participation in code and design reviews.
  • Partner with the VP of Engineering to maintain engineering health, focusing on processes and systems instead of people management.
  • Continuously deliver features and improvements, implementing reference implementations and automated guardrails.
  • Simplify complex solutions that can scale as needed, while eliminating non-viable designs.

Benefits

  • Opportunity to influence foundational architecture decisions for long-term success.
  • High level of autonomy as a senior individual contributor.
  • Mentorship role that shapes future engineering talent.
  • Engagement with a company culture focused on practical solutions and continuous shipping.
  • Collaboration with senior leadership, including the VP of Engineering, to enhance engineering standards.
Full Job Description
Role Overview

You will be the most senior individual contributor in Moon's engineering organization, with company-wide technical authority, working directly with the VP of Engineering. You will own the toughest problems and the toughest deadlines personally, understand the mechanics of the application in complete detail, and design it for maximized performance, uptime, and security. With the VP of Engineering you will own the overall health of engineering - not by managing people, but by owning the processes, systems, and standards that make every team better. You ship continuously, and you set the standard for what excellent engineering looks like in this organization.

About the role
• You will join at the moment the foundational architecture decisions get made - the ones the next five years are built on. You have done this before at a high-growth startup that scaled through multiple stages quickly, and you personally laid foundations that survived every stage.

What you'll do
• Own the architecture of the platform and everything that crosses team boundaries - designed for performance, uptime, and security as first principles.
• Take the hardest problems and the tightest deadlines yourself, as an IC, and deliver them.
• Know the application's mechanics in detail: every critical path, every seam, every failure mode.
• Mentor the engineering team to greatness: code review, design review, pairing, and example - you are the standard others calibrate against.
• Own engineering health with the VP of Engineering - the processes and systems, not the people management - that keep quality, velocity, and reliability high.
• Ship continuously: reference implementations, the hardest seams, and the automated guardrails that protect the platform.
• Make simple things that scale when they need to - and kill elegant things that don't ship.

Qualifications
• 12+ years of engineering with staff/principal scope at high-growth startups; personally scaled systems through multiple company stages.
• The signal we screen hardest for: practicality. Come ready to tell us about the infinitely-scalable design you rejected in favor of the simple thing that shipped - with specifics.
• Deep distributed systems, data modeling, API design, and security expertise.
• A record of mentorship that engineers volunteer unprompted.
• Writes clearly enough that contracts and design docs replace meetings.

The pay range for this role is:

320,000 - 380,000 USD per year (Moon HQ)

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