AI Fund

Founding Senior Full Stack Software Engineer – AI-First SaaS Platform

AI Fund

full-time

Posted on:

Location Type: Hybrid

Location: Irvine • California • United States

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Job Level

Senior

Tech Stack

AWSAzureDistributed SystemsGoogle Cloud PlatformJavaScriptNode.jsPythonTypeScript

About the role

  • Act as a founding engineer, shaping architecture, engineering standards, and best practices.
  • Design, build, and maintain end-to-end features across the ResolveGrid SaaS platform.
  • Develop and operate backend services using Node.js with TypeScript/JavaScript.
  • Build and evolve frontend application flows using modern JavaScript/TypeScript frameworks.
  • Write and maintain Python services and supporting tools.
  • Design and implement AI-powered features, including: Chat agents and autonomous agents, Context management and memory strategies, Prompt engineering, evaluation, and iteration, and Agent workflows and orchestration.
  • Use AI coding agents (e.g., Cursor, Windsurf, Claude) as a first-class part of daily development.
  • Make architectural decisions with scalability, reliability, and maintainability in mind.
  • Collaborate closely with product and leadership on roadmap and execution.
  • Debug production issues and continuously improve system performance and reliability.
  • Mentor and help grow the engineering team over time.

Requirements

  • 7+ years of professional software engineering experience.
  • Strong expertise in TypeScript/JavaScript and Node.js.
  • Proven experience building and operating SaaS platforms.
  • Solid production experience with Python.
  • Hands-on experience building AI-driven systems, including LLM-based chat or agent workflows.
  • Practical knowledge of prompt engineering, context/window management, and agent design patterns.
  • Demonstrated experience using AI coding agents (e.g., Cursor, Windsurf, Claude).
  • Experience deploying and operating systems on AWS, GCP, or Azure.
  • Strong understanding of system design, APIs, and distributed systems.
  • Comfortable operating with ambiguity and high ownership in an early-stage startup.
  • Ability to work regularly from Irvine, CA (Orange County).
Benefits
  • Be a founding engineer with real ownership and influence.
  • Join an AI-first, high-caliber engineering team that treats AI as a force multiplier.
  • Build production-grade AI systems with real customer impact.
  • Competitive compensation including meaningful equity.
  • Opportunity to grow into technical leadership as the company scales.

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
Node.jsTypeScriptJavaScriptPythonAI-driven systemsprompt engineeringcontext managementagent design patternssystem designAPIs
Soft skills
mentoringcollaborationproblem-solvingownershipadaptability