Principal Software Engineer, Platform

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Principal Software Engineer, Platform in USA new

PermitFlow
Full time
Email

USA
10/30/2026
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New York, NY

Responsibilities

Own the architecture of the codebase, including module boundaries, domain abstractions, monorepo patterns, refactors, and migrations.
Design the monorepo structure, package ownership, build graph, and conventions for effective agent-assisted development.
Build and operate shared platform services, infrastructure, and paved paths for data access, background jobs, environments, and observability.
Define and evolve the agentic software development lifecycle from ticket creation through production.
Develop AI-assisted code review, test generation, and CI gates, determining where human review is required.
Deploy background agents for scoped tickets, flaky-test triage, dependency upgrades, migrations, and incident-related fixes.
Work across the product stack, including data models and user interfaces, when needed to accelerate delivery.
Set technical direction across multiple teams through architectural judgment, working code, and clear communication.

Requirements

15+ years of software engineering experience, including experience setting technical direction across multiple teams.
Experience owning the architecture of a large, multi-team codebase and leading organization-wide migrations.
Experience with monorepo tooling such as Nx, Turborepo, Bazel, or similar.
Strong platform and infrastructure depth, including cloud infrastructure, infrastructure as code, CI/CD, observability, and production incident ownership.
Ability to work across the stack as a product engineer, from data models through user interfaces.
Current hands-on experience using AI coding agents and informed opinions about their failure modes and codebase structure.
Knowledge of agentic software engineering concepts including context engineering, agent instructions and skills, MCP, sandboxed execution, and evaluating coding-agent output.
Ability to influence through demonstrated technical judgment, working code, and clear writing rather than formal authority.

Benefits

Competitive salary and meaningful equity are offered.
100% company-paid medical, dental, and vision coverage for employees, plus a healthcare FSA.
401(k) savings plan.
Unlimited PTO and paid family leave.
Home office and equipment stipend.
Daily in-office lunch and dinner.
Pre-tax commuter benefits for transit and parking.
Hybrid schedule with three in-office days per week; NYC-based candidates or candidates open to relocation are preferred.

Salary: $250k - $300k/yr

PermitFlow

PermitFlow builds a SaaS platform that uses AI to manage construction permitting and other pre‑construction compliance for builders, contractors, and developers across the U.S. It centralizes permit applications, licensing, inspections, and closeouts, with software workflows and optional permit‑e...

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