Senior Platform Engineer - AI Platform

Porch Group is a leading vertical software and insurance platform and is positioned to be the best partner to help homebuyers move, maintain, and fully protect their homes. We offer differentiated products and services, with homeowners insurance at the center of this relationship. We differentiate and look to win in the massive and growing homeowners insurance opportunity by 1) providing the best services for homebuyers, 2) led by advantaged underwriting in insurance, 3) to protect the whole home.

As a leader in the home services software-as-a-service (“SaaS”) space, we’ve built deep relationships with approximately 30 thousand companies that are key to the home-buying transaction, such as home inspectors, mortgage companies, and title companies.

In 2020, Porch Group rang the Nasdaq bell and began trading under the ticker symbol PRCH. We are looking to build a truly great company and are JUST GETTING STARTED.

Job Title: Senior Platform Engineer - AI Platform

Location: United States
Workplace Type: Remote

Job Summary

The future is bright for the Porch Group , and we'd love for you to be a part of it as our Senior Platform Engineer - AI Platform .

ISN is hiring a Senior Platform Engineer to lead AI-first platform work at the intersection of agentic systems and production infrastructure. You'll design and ship the systems that let agents and LLMs do real work inside a high-volume product — spanning scheduling, report intake, customer communication, billing workflows, and data extraction. You'll also own the foundation underneath it: our PHP application, AWS/ECS infrastructure, and MySQL/Aurora data layer. This role offers unusual latitude to define how AI works at ISN, backed by the scale and stability of Porch Group and the data of a category-leading home inspection software platform.

What You Will Do As A Senior Platform Engineer - AI Platform

- Build AI features end to end — retrieval, context engineering, structured output, tool/function calling, and evaluation harnesses that measure whether a change actually made things better

- Design and operate agent orchestration systems — multi-agent and multi-step workflows including task decomposition, tool routing, state and memory, retries and fallbacks, human-in-the-loop checkpoints, and guardrails against failure modes that don't look like exceptions

- Operate non-deterministic systems responsibly — tracing, evals in CI, prompt and model versioning, token and latency budgets, model routing, and cost controls

- Own ECS container platform operations — service definitions, task sizing, autoscaling, blue/green deploys, and orchestration for both long-running services and async workers

- Architect AWS infrastructure — event-driven and serverless pipelines (Lambda, SQS/SNS/EventBridge), IAM and network design, all managed as infrastructure as code

- Build and extend services in our production PHP codebase, integrating AI capability into existing product surfaces without destabilizing them

- Drive database performance at scale — schema design, indexing, replication and read scaling, zero-downtime migrations, and query performance work across MySQL and Aurora

- Raise the bar across the team through code review, design docs, mentorship, incident response, and on-call participation

What You Will Bring As A Senior Platform Engineer - AI Platform

- 10+ years building and running production software, with real ownership of systems at scale

- Demonstrated, hands-on experience shipping LLM-backed features — not just API calls, but agent orchestration, RAG, evaluation, and the operational discipline to keep them working

- Strong PHP (8.x) skills in a mature, high-traffic codebase

- Deep AWS architecture experience with hands-on ECS operations, infrastructure as code (Terraform or CDK), and CI/CD

- Expert-level relational database skills with MySQL and/or Aurora — able to read an execution plan and act on it

- Strong fundamentals in distributed syst