Senior Platform Engineer - AI Platform

Senior Platform Engineer - AI Platform

Location:

United States (Remote)

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.

• 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/Event Bridge), 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

• 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 systems, API design, observability, and application security
• Clear written communication and sound judgment about tradeoffs, especially where AI is the wrong tool for the job
• Nice to have:
  Go, MCP or comparable agent‑tooling standards, vector search and embedding pipelines, Kubernetes, document and image extraction pipelines, or real estate/proptech/field‑services domain experience

• $168,800 – $236,300 annually
• Please know your actual pay at Porch will reflect a number of factors among which are your work experience and skillsets, job‑related knowledge, alignment with market and our Porch employees, as well as your geographic location.
• Additionally, you will be eligible to receive long‑term incentive awards, subject to program guidelines and approvals.
• Our benefits package will provide you with comprehensive coverage for your health, life, and financial wellbeing.
• Our traditional healthcare benefits include three (3) Medical plan options, two (2) Dental plan options, and a Vision plan from which to choose.
• Critical Illness, Hospital Indemnity and Accident plans are offered on a voluntary basis.
• We offer pre‑tax savings options including a partially employer funded Health Savings Account and employee Flexible Savings Accounts including healthcare, dependent care, and…