Karumi (YC F25)
Product Engineer (Full-Stack)
Karumi (YC F25), San Francisco, California, United States, 94199
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Product Engineer (Full‑Stack)
role at
Karumi (YC F25)
Base pay range $100.00/yr - $170.00/yr
The Opportunity Join our product engineering team in the US to build features that directly impact how customers experience and adopt our platform. This role bridges technical execution and product thinking — you'll ship user‑facing features while making architectural decisions across the entire stack. You’ll work end‑to‑end: designing interfaces, building APIs, optimizing performance, and deploying to production. We move fast, iterate with users, and expect engineers to own problems from concept to launch.
We sponsor visas for qualified candidates.
Core Responsibilities
Build full‑stack features from UI components to backend services
Design and implement responsive, intuitive user interfaces with React
Develop high‑performance APIs using FastAPI and async Python
Work with LLM integrations, prompt engineering, and AI‑powered workflows
Deploy and monitor features across our AWS infrastructure
Gather user feedback and iterate rapidly on what you ship
Technical Requirements
Strong full‑stack development experience (frontend + backend)
Proficient in React and modern JavaScript/TypeScript
Python skills with FastAPI or similar frameworks
Experience with PostgreSQL, Redis, and async patterns
Comfortable with AWS/Azure/GCP, deployment pipelines, and infrastructure basics
Product mindset — you care about user experience and customers, not just code
Nice to Have
Experience building with LLMs and AI‑powered features
Browser automation or headless browser technologies
Design sensibility and attention to UI/UX details
Previous startup or 0‑to‑1 product experience
Why Karumi
Meaningful equity stake in a backed, fast‑growing company
End‑to‑end ownership of features users interact with daily
Direct impact on product direction and company trajectory
Small team where shipping matters more than process
Gym
Visa sponsorship available
Seniority level Entry level
Employment type Full‑time
Job function Engineering and Information Technology
#J-18808-Ljbffr
Product Engineer (Full‑Stack)
role at
Karumi (YC F25)
Base pay range $100.00/yr - $170.00/yr
The Opportunity Join our product engineering team in the US to build features that directly impact how customers experience and adopt our platform. This role bridges technical execution and product thinking — you'll ship user‑facing features while making architectural decisions across the entire stack. You’ll work end‑to‑end: designing interfaces, building APIs, optimizing performance, and deploying to production. We move fast, iterate with users, and expect engineers to own problems from concept to launch.
We sponsor visas for qualified candidates.
Core Responsibilities
Build full‑stack features from UI components to backend services
Design and implement responsive, intuitive user interfaces with React
Develop high‑performance APIs using FastAPI and async Python
Work with LLM integrations, prompt engineering, and AI‑powered workflows
Deploy and monitor features across our AWS infrastructure
Gather user feedback and iterate rapidly on what you ship
Technical Requirements
Strong full‑stack development experience (frontend + backend)
Proficient in React and modern JavaScript/TypeScript
Python skills with FastAPI or similar frameworks
Experience with PostgreSQL, Redis, and async patterns
Comfortable with AWS/Azure/GCP, deployment pipelines, and infrastructure basics
Product mindset — you care about user experience and customers, not just code
Nice to Have
Experience building with LLMs and AI‑powered features
Browser automation or headless browser technologies
Design sensibility and attention to UI/UX details
Previous startup or 0‑to‑1 product experience
Why Karumi
Meaningful equity stake in a backed, fast‑growing company
End‑to‑end ownership of features users interact with daily
Direct impact on product direction and company trajectory
Small team where shipping matters more than process
Gym
Visa sponsorship available
Seniority level Entry level
Employment type Full‑time
Job function Engineering and Information Technology
#J-18808-Ljbffr