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Senior Back End Engineer - AI Workflow/Application Builder (Fremont)
Senior Back End Engineer - AI Workflow/Application Builder (Fremont)Ikuto • Fremont, CA, US
Senior Back End Engineer - AI Workflow / Application Builder (Fremont)

Senior Back End Engineer - AI Workflow / Application Builder (Fremont)

Ikuto • Fremont, CA, US
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🚀 Senior Backend Engineer AI Application Builder

đź“Ť SoMa, San Francisco, CA | đź’Ľ Full-Time | Onsite

đź’° Salary : $200K$325K + Meaningful Equity (1%+)

Join an early-stage AI SaaS start-up creating an application builder that empowers business users to build custom applications where humans and AI collaborate seamlessly across enterprise systems. The company addresses complex enterprise challenges, including multi-day workflows, cross-system integrations (ERP / CRM / financial platforms), secure VPC hosting, and enterprise-grade observability, logging, identity, and compliance controls.

About the Role

Were looking for a Backend Engineer to lead the development of backend systems and architecture. This is a rare opportunity to take ownership of core systems in an early-stage company, shaping architecture, scalability, and reliability from the ground up.

Youll tackle challenging problems like orchestrating multi-system workflows, processing large-scale data asynchronously, and safely executing AI-generated code all while collaborating closely with the applied AI team.

What Youll Do

  • Design and build the core workflow engine the orchestration layer connecting agents, data sources, and frontend views.
  • Develop and scale the TypeScript-based backend , handling asynchronous execution, retries, and deterministic routines.
  • Build and maintain integration layers for REST APIs, SQL sources, and third-party systems.
  • Collaborate with the applied AI engineering team to integrate automation and intelligence across systems.
  • Define and enforce best practices for backend architecture, reliability, and developer experience as the company scales.

Who You Are (Must-Haves)

  • 415 years of professional software engineering experience.
  • Strong experience with TypeScript, Node.js , and modern backend architectures.
  • Experience designing complex data models and managing asynchronous tasks / workflows.
  • Prior experience working in early-stage startups or high-growth environments.
  • Experience integrating multiple systems, including REST APIs and SQL sources.
  • Excited by building scalable systems and comfortable in a startup environment.
  • Excellent problem-solving, collaboration, and communication skills.

    • Nice-to-Haves

  • Experience building or integrating AI / LLM-powered applications .
  • Familiarity with Temporal or similar orchestration / workflow systems.
  • Exposure to other modern backend frameworks or cloud technologies (AWS, GCP, Kubernetes).

    • Why Join?

  • Competitive salary : $200K$325K + meaningful equity (1%+) in an early-stage company.
  • Work alongside experienced founders who have successfully scaled AI and enterprise SaaS products.
  • Shape the architecture and direction of a high-impact backend system used across complex workflows.
  • Be part of a small, highly motivated team at the forefront of AI and enterprise applications.
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    Back End Engineer • Fremont, CA, US

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