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Founding Full Stack Engineer

Website Hire With Jarvis - Kyle Ihanainen

Founding Full-Stack / Product Engineer (Onsite — San Francisco, CA) Location: San Francisco, CA (onsite)

Employment Type: Full-time

About the Role
We’re building a new category of sales performance technology that helps go-to-market teams observe and replicate top-performer behaviors. The product is scaling quickly with enterprise adoption, and we’re doubling headcount this year. As a Founding Engineer, you’ll own major chunks of architecture, performance, and product direction—shipping fast, talking to customers, and shaping what the platform becomes.
This is a true 0→1/1→n role for someone who loves full-stack work, thrives in ambiguous environments, and wants outsized ownership and impact.

What You’ll Do

  • Build and ship end-to-end features across React/Next.js (frontend) and Node.js/NestJS (backend).
  • Design reliable data models and services using PostgreSQL and MongoDB.
  • Integrate backend services with Python FastAPI endpoints that power ML workflows.
  • Drive architectural decisions to improve performance, scalability, and developer velocity.
  • Contribute to AWS infrastructure, deployment strategies, and CI/CD pipelines.
  • Collaborate directly with founders and early customers; scope and deliver customer-facing projects.
  • Maintain high code quality through reviews, testing, and clear documentation.
  • Gather early user feedback and iterate quickly.

What We’re Looking For

  • 3–7 years of professional software engineering experience.
  • Strong TypeScript/JavaScript across the full stack.
  • Proficiency with React/Next.js and Node.js/NestJS.
  • Comfort owning projects end-to-end in a fast-paced startup environment.
  • Excellent communication; able to work directly with customers and stakeholders.
  • Onsite requirement: role based in San Francisco.

Nice to Have

  • Experience with Python (FastAPI) for ML integrations.
  • AWS cloud infrastructure and CI/CD experience.
  • Background in sales tech, AI, or B2B SaaS.
  • Early-stage/founding engineer experience and/or meaningful side projects.

Why This Role

  • Founding-level ownership and impact during a period of rapid growth.
  • High velocity team culture with clear product-market pull.
  • Opportunity to help define the engineering org and best practices as we scale.
  • Learn a ton, fast—across product, customers, systems design, and team building.

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To apply for this job email your details to apply.a4lpxa1i2poi@aptrack.co

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