Amadeus Search
Role:
Founding Full-Stack Engineer Employment Type:
Full-time, On-site Location:
San Francisco, CA Compensation:
$170k - $230k base + competitive equity Visa:
Not available Company Overview
Kaizen builds
reinforcement learning environments
that allow AI to train from its own experience instead of relying on human-labeled data - solving the core infrastructure bottleneck to achieving
autonomous agentic AI systems . In just
5 months , they've secured
massive contracts with frontier AI labs , have a
3-person founding team , and are scaling rapidly with strong funding and runway. Role Summary
As employee #4, you will
own features end-to-end
across the stack - from database to UI - and build production systems that support
high-volume autonomous AI training workloads
for the world's top AI research labs. Key Responsibilities Architect
full-stack applications
with React.js (frontend) and Python (backend) Deploy
scalable infrastructure
on AWS/GCP for AI training systems Transform cutting-edge AI research into production-ready tools Lead technical decisions in a
microservices architecture Help define
engineering culture
as the team grows from 3 → 30+ engineers Ideal Candidate Profile 2-5 years
building large-scale production applications Expert React.js
skills (complex frontend leadership experience) Backend mastery with
Python
(FastAPI, Django, or Flask) Full-stack versatility - strong frontend + backend skills Experience deploying real production systems on AWS/GCP Broad domain exposure (marketplaces, real-time portals, varied use-cases) Bonus: DevOps/CI-CD, Redux/Zustand, Docker, public portfolio, microservices Culture & Work Style In-person in San Francisco (high-collaboration environment) Elite engineering team solving the
hardest problems in AI Mission-driven, high-ownership role with direct product impact Ground floor of a
high-growth AI infrastructure startup
Founding Full-Stack Engineer Employment Type:
Full-time, On-site Location:
San Francisco, CA Compensation:
$170k - $230k base + competitive equity Visa:
Not available Company Overview
Kaizen builds
reinforcement learning environments
that allow AI to train from its own experience instead of relying on human-labeled data - solving the core infrastructure bottleneck to achieving
autonomous agentic AI systems . In just
5 months , they've secured
massive contracts with frontier AI labs , have a
3-person founding team , and are scaling rapidly with strong funding and runway. Role Summary
As employee #4, you will
own features end-to-end
across the stack - from database to UI - and build production systems that support
high-volume autonomous AI training workloads
for the world's top AI research labs. Key Responsibilities Architect
full-stack applications
with React.js (frontend) and Python (backend) Deploy
scalable infrastructure
on AWS/GCP for AI training systems Transform cutting-edge AI research into production-ready tools Lead technical decisions in a
microservices architecture Help define
engineering culture
as the team grows from 3 → 30+ engineers Ideal Candidate Profile 2-5 years
building large-scale production applications Expert React.js
skills (complex frontend leadership experience) Backend mastery with
Python
(FastAPI, Django, or Flask) Full-stack versatility - strong frontend + backend skills Experience deploying real production systems on AWS/GCP Broad domain exposure (marketplaces, real-time portals, varied use-cases) Bonus: DevOps/CI-CD, Redux/Zustand, Docker, public portfolio, microservices Culture & Work Style In-person in San Francisco (high-collaboration environment) Elite engineering team solving the
hardest problems in AI Mission-driven, high-ownership role with direct product impact Ground floor of a
high-growth AI infrastructure startup