Principal Software Engineer

Overview

Title: Principal Software Engineer
Location: NYC
Salary: $250K - $330K + Equity

A rapidly growing SaaS AI startup in NYC is hiring a Principal Full Stack Engineer in a hands-on leadership position reporting directly to the CEO. This role provides the opportunity to take ownership over work and shape the technical direction for the team.

This high-impact, hands-on leadership role covers frontend, backend, and infrastructure. You will define the technical direction, build scalable distributed systems, and ship customer-facing features that impact millions of users. This role is ideal for someone excited by startup ownership, consumer SaaS, and building AI-powered systems with immediate impact.

• Own and contribute to full stack development across frontend, backend, and infrastructure.
• Define architecture and ship systems from 0 to 1.
• Design and implement scalable distributed systems.
• Drive technical decisions in a high-growth startup environment.
• Translate product ideas into customer-facing features with measurable impact.
• Collaborate with leadership to shape technical direction and roadmap.

• 7+ years of experience in full stack or product-focused software engineering.
• 3+ years of technical product ownership and/or scaling teams.
• Experience defining architecture and shipping systems from 0 to 1.
• Full stack experience across frontend, backend, and infrastructure.
• Experience with scalable system design and distributed architectures.
• Comfortable driving technical decisions in high-growth settings.
• Proven ability to turn product ideas into customer-facing features.

• Equity
• Medical, Dental, and Vision insurance
• Opportunity to lead and shape a rapidly scaling engineering organization

Oscar Associates Limited (US) is acting as an Employment Agency in relation to this vacancy.