Principal Software Engineer, Platform
$250k - $300k • New York City, NY • FullTime
Posted 6h ago
Job Location
New York City, NY
Tech Stack
Remote Work Policy
On-site
Employment Type
FullTime
Categories
AI Agent Engineer
About the job
PermitFlow is redefining how America builds by leveraging applied AI to tackle complex information challenges in the construction industry. Our AI agent workforce assists construction companies with permitting, licensing, inspections, and project closeouts, accelerating development across the country. We have already delivered significant improvements in speed, accuracy, and visibility for over $20B in development. As the U.S. enters a new capital expenditure supercycle, joining PermitFlow means building the AI infrastructure at the core of every construction project driving this next wave of reindustrialization. We are a well-funded, high-growth company with backing from top-tier investors and leaders in the AI and construction tech space.
Responsibilities
- Own and evolve the architecture of the company's codebase, defining patterns, module boundaries, and domain abstractions.
- Design the monorepo structure for agents, including packages, ownership, build graph, and conventions.
- Build the platform substrate, including shared services, infrastructure, and paved paths for data access, background jobs, environments, and observability.
- Own the agentic Software Development Life Cycle (SDLC), defining workflows for agent-driven development, testing, and review.
- Scale verification processes with AI-assisted code review, test generation, and CI gates to maintain confidence as PR volume increases.
- Implement background agents to handle tasks such as ticket triaging, test maintenance, dependency upgrades, and drafting fixes from incidents.
Requirements
- Experience owning the architecture of a large, multi-team codebase, including setting module boundaries and patterns.
- Proficiency with monorepo tooling such as Nx, Turborepo, or Bazel.
- Experience leading migrations that significantly impact organizational workflows.
- Strong depth in platform and infrastructure, including cloud infrastructure, infrastructure as code, CI/CD, and observability.
- Experience running services in production and managing real incidents.
- Ability to work across the full stack as a product engineer, from data models to UI.
- Current experience working with AI coding agents, understanding their limitations and how codebase structure can improve their effectiveness.
- Current knowledge of the agentic stack as it applies to software engineering, including context engineering, agent instructions and skills, MCP, sandboxed execution, and evaluation of coding agent output.
- Demonstrated ability to influence through judgment, working code, and clear writing.
- 15+ years of software engineering experience, with a significant portion dedicated to setting technical direction across multiple teams.
Benefits
- Competitive salary
- Meaningful equity in a high-growth company
- 100% company-paid medical, dental, and vision coverage for employees
- Healthcare FSA
- 401(k) savings plan
- Unlimited PTO
- Paid family leave
- Home office & equipment stipend
- Daily in-office lunch and dinner provided
- Commuter benefits (pre-tax transit and parking)