Software Engineer, Applied AI at Mantle | CA, US | Rezi

Software Engineer, Applied AI at Mantle

Software Engineer, Applied AI

Mantle · CA, US

2 weeks ago

Software Engineer, Applied AI

Mantle · CA, US

19 days ago
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About the Role

As a Software Engineer on our Applied AI team, you'll design and build agent systems that understand user situations, take action on their behalf, and identify when human intervention is needed. You will work directly with founders and the engineering team to transition agent capabilities from prototype to production, focusing on reliability and dependability.

Responsibilities

  • Design and build agent systems that understand user situations, take action on their behalf, and identify when human intervention is needed.
  • Take agent capabilities from prototype to production.
  • Build evaluation frameworks to measure quality, accuracy, and safety, and to catch regressions.
  • Develop guardrails and escalation paths for agent trustworthiness with sensitive information.
  • Create retrieval and memory systems for agent context.
  • Build integration layers connecting AI models, third-party services, and internal systems.
  • Implement feedback loops and data pipelines to improve the agent weekly.

Requirements

  • 2-10 years building production software with modern technologies.
  • Hands-on experience shipping LLM-powered features or agents to real users.
  • Strong grasp of prompt design, retrieval, tool calling, and agent orchestration patterns.
  • Experience building evaluation systems and using them to drive product decisions.
  • Strong backend skills (e.g. Python or Node.js, APIs, data pipelines).
  • Experience deploying on AWS.

Skills

  • Python
  • Node.js
  • APIs
  • Data pipelines
  • Prompt design
  • Retrieval
  • Tool calling
  • Agent orchestration
  • Evaluation systems
  • AWS deployment
  • AI development tools (Cursor, Claude Code, etc.)

Location

  • San Francisco

Work Type

  • Remote Fridays
  • In-person Monday through Thursday

Experience Level

  • 2-10 years
  • Early-stage startup experience
  • First-10 engineer experience

Benefits

  • Meaningful work
  • Real technical ownership
  • Fast pace
  • Huge financial potential
  • Small team impact
  • Early team equity
  • Meaningful ownership in a company targeting a massive market
  • Opportunity to shape the future of the product
  • Learning and growth opportunities
  • Work on hard open problems in applied AI

About the Company

  • Building an AI agent to help families support their aging parents.
  • Over 40M “sandwich generation” Americans currently manage their parent’s affairs, which is time-consuming, stressful and on top of their already busy lives.
  • Co-founded by serial entrepreneur partners including Ted Zagat, who sold his previous businesses to Slack and Google.