Founding Engineer - Deployment at Mason | CA, US | Rezi

Founding Engineer - Deployment at Mason

Founding Engineer - Deployment

Mason · CA, US

4 weeks ago

Founding Engineer - Deployment

Mason · CA, US

a month ago
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About the Role

You'll be the engineer who takes a customer's most important operational problem and turns it into software they use every day. This is a forward-deployed engineering role where you'll work directly with customers, learn their business, and build agents, integrations, and applications that change how they operate. You will own the work from the first conversation through production and ongoing improvement, making architecture decisions, writing code, and ensuring the system delivers the needed results. This is a hands-on, high-autonomy role where you will define what needs to be built and build it end-to-end, turning learnings into reusable tools and product improvements.

Responsibilities

  • Production AI agents that own real estate and development workflows end to end
  • Customer integrations, backend services, and data pipelines that connect Mason to the systems teams already use
  • Customer-facing applications in Next.js and TypeScript that make complex workflows straightforward to use
  • Agent logic, retrieval, tools, and human review controls designed around the customer's actual work
  • Evaluation and regression checks that catch incorrect outputs, broken integrations, and workflow failures before rollout
  • Production deployments that you debug, monitor, and improve using customer feedback and measured business outcomes
  • Reusable components and deployment patterns developed alongside Data and Infrastructure engineers

Requirements

  • At least four years of software engineering experience, with a track record shipping production systems used by real customers
  • Strong backend or full-stack engineering skills: you can design, code, integrate, and debug an application end to end
  • Good product intuition and taste, with the ability to turn an ambiguous business problem into a useful technical solution
  • Comfort working directly with customers and communicating clearly with both technical and nontechnical stakeholders
  • The judgment to define success, manage scope, and make tradeoffs while staying accountable for the outcome
  • High ownership and high agency: you investigate the problem, make decisions, and keep moving when there isn't an established playbook
  • Experience with forward-deployed engineering, enterprise product development, complex integrations, or production AI agents is a strong plus
  • Real estate or construction experience is helpful

Skills

  • Python
  • TypeScript
  • Node.js
  • SQL
  • PostgreSQL
  • Snowflake
  • Databricks
  • Amazon Redshift
  • dbt
  • Anthropic and OpenAI APIs
  • Claude Agent SDK
  • Vercel AI SDK
  • LangGraph
  • MCP
  • pgvector
  • Cohere
  • Hindsight
  • RAG pipelines
  • Inngest
  • Temporal
  • Blaxel
  • Modal
  • AWS
  • Docker
  • Kubernetes
  • Terraform
  • Next.js

Location

  • North America
  • Europe
  • Latin America

Work Type

  • Customer travel required

Experience Level

  • At least four years of software engineering experience

About the Company

  • Mason is on a mission to accelerate the development of the built world by tackling housing shortages, energy constraints, and decaying infrastructure.
  • We create AI systems that transform some of the largest firms in the world.
  • A core part of this work is building the company brain: turning decades of fragmented documents, databases, emails, and operational knowledge into connected data and context that AI agents can actually use.
  • We're growing fast - we have an 8-figure pipeline of projects and are looking for great engineers to join our team.
  • Our founding team comprises a repeat founder who exited to a Fortune 500, a former tech lead at Meta Superintelligence who co-created Meta AI, and a development director who built $2B+ of projects.
  • Small, intense, low-ego team with substantial ownership from day one
  • Regular board game nights, lots of laughs, no corporate nonsense