# Senior Full Stack Engineer

**Company:** [FlexAI](https://hotfix.jobs/companies/flexai)
**Location:** Santa Clara, CA, San Jose, CA
**Role:** Fullstack Engineering
**Experience:** 5+ years
**Skills:** React, Python, FastAPI, Node.js, APIs, Kubernetes, CI/CD, Data Models, Async Workflows, Cloud Platforms
**Posted:** 2026-03-24

> Build end-to-end features for AI compute platform including React UIs, Python/Node.js APIs, data workflows, and compute integrations. Requires 5+ years full stack experience, React, Python/FastAPI or Node.js, and startup environment comfort.

## Job Description

## What You’ll Do
- Build and ship end-to-end features across our platform (developer tools, marketplace, billing, admin)
- Develop high-performance UIs using **React**
- Design and implement APIs and backend services using **Python (FastAPI)** and/or **Node.js**
- Define clean, scalable contracts between frontend and backend
- Work on data-intensive workflows (jobs, compute orchestration, resource management)
- Collaborate with platform and infrastructure teams to build reliable systems
- Debug and optimize across the stack — from UI to backend performance
- Own features end-to-end: design, build, ship, and operate

## What You’ll Need to Be Successful
- 5+ years of experience with a **Bachelor's** and/or **Master's** degree building Full Stack applications
- Strong skills in:
  - **Frontend**: React (modern stack)
  - **Backend**: Python (FastAPI or similar) or Node.js
- Experience designing and working with APIs
- Comfortable with data models, async workflows, and scalable systems
- Ability to operate independently and move fast with high ownership
- Strong communication and collaboration skills
- Experience working in startup environments
- Comfortable leveraging AI coding tools and agents to move faster

## Nice to Have
- Experience with cloud platforms, developer tools, or compute systems
- Familiarity with **Kubernetes**, **CI/CD**, and observability
- Exposure to billing, licensing, or marketplace systems

## What We Offer
- A competitive salary and benefits package
- Work on cutting-edge AI infrastructure
- Build products used by developers and enterprises
- High ownership, fast execution, real impact
- Collaborative, high-caliber team

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**Apply:** https://hotfix.jobs/jobs/72b79a46-a5f0-4e75-a970-1ca0c68c7485
**Canonical:** https://hotfix.jobs/jobs/72b79a46-a5f0-4e75-a970-1ca0c68c7485