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Porch Group

Connects homeowners with local home pros

Senior Platform Engineer - AI Platform

Platform EngineeringPosted on Nov 9
Full-timeWashington, USA

About the Job

Requirements

  • At least 10 years of experience building and running production software, including ownership of systems at scale.
  • Hands-on experience shipping LLM-backed features, including agent orchestration, retrieval-augmented generation, evaluation, and operational practices to maintain them.
  • Strong PHP 8.x skills in a mature, high-traffic codebase.
  • Deep AWS architecture experience, hands-on ECS operations, infrastructure as code using Terraform or CDK, and CI/CD.
  • Expert-level relational database skills with MySQL and/or Aurora, including reading execution plans and acting on them.
  • Strong fundamentals in distributed systems, API design, observability, and application security.
  • Clear written communication and sound judgment about tradeoffs, especially when AI is not an appropriate solution.

Responsibilities

  • Build AI features end to end, including retrieval, context engineering, structured output, tool and function calling, and evaluation harnesses to measure the impact of changes.
  • Design and operate agent orchestration systems, including multi-agent and multi-step workflows with task decomposition, tool routing, state and memory, retries and fallbacks, human-in-the-loop checkpoints, and guardrails for non-exception failure modes.
  • Operate non-deterministic systems responsibly through tracing, evaluations in CI, prompt and model versioning, token and latency budgets, model routing, and cost controls.
  • Own ECS container platform operations, including service definitions, task sizing, autoscaling, blue/green deployments, and orchestration for long-running services and asynchronous workers.
  • Architect AWS infrastructure, including event-driven and serverless pipelines using Lambda, SQS, SNS, and EventBridge; IAM and network design; and infrastructure as code.
  • Build and extend services in the production PHP codebase, integrating AI capability into existing product surfaces without destabilizing them.
  • Improve database performance at scale through 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 documents, mentorship, incident response, and on-call participation.

Desired Qualifications

  • Experience with Go, MCP or comparable agent-tooling standards, vector search and embedding pipelines, Kubernetes, document and image extraction pipelines, or real estate, proptech, or field-services domains.

About the Company

Porch Group

Connects homeowners with local home pros

Porch connects homeowners with local home improvement, repair, and maintenance professionals through an online marketplace. Homeowners can browse over 1,100 project types, compare quotes, and hire pros for tasks ranging from small repairs to major remodels. The platform works by listing professionals (and their leads) for a fee, offering premium tools to manage jobs, and partnering with brands and insurers for additional revenue. Porch stands out with the Porch Guarantee and Property Protection program, which provide satisfaction guarantees and protections regardless of whether the work is done by Porch’s own team or a recommended pro, along with extensive homeowner resources. The company aims to simplify finding and hiring reliable local experts, deliver peace of mind through guarantees, and grow a scalable marketplace for home services.

Company size
1,001-5,000
Company stage
IPO
Headquarters
Seattle, WA
Founded
2013

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