W2 Contract Role_Senior Python Full Stack Developer_Cupertino, CA (Onsite Role)

Role: Senior Python Full Stack Developer

Location: Cupertino, CA (Onsite Role)

Duration: Long term contract

Position Type: W2 Contract only

Visa: EAD/TN/E3/Initial OPT EAD

Job description:

We are seeking a highly skilled and experienced Senior Full Stack Developer to join our engineering team. The ideal candidate brings deep expertise across backend development, frontend frameworks, database architecture, hardware communication protocols, and cross-platform scripting. This role requires someone who can independently own technical decisions, mentor junior developers, and deliver robust, scalable solutions across web, mobile, and embedded-adjacent platforms.

Technical Requirements

Backend Development — Python

• 3+ years of Python development experience
• Proficiency with Flask – RESTful API design, middleware, blueprints, app factory pattern
• Proficiency with FastAPI – async endpoints, dependency injection, Pydantic models, OpenAPI documentation
• Experience with SQLAlchemy – ORM modeling, query optimization, relationship mapping
• Experience with unit testing frameworks (pytest)

Frontend Development — React + Kendo UI + TypeScript

• 3+ years of React development experience
• Experience with Kendo UI for React
• Strong understanding of component lifecycle, hooks, and state management (Redux, Context API, Zustand)
• Experience building responsive, accessible, and performant UIs
• Experience integrating TypeScript in React projects

General Engineering Skills

• Solid understanding of RESTful API and JSON-RPC 2.0 design principles
• Experience with Git version control (branching strategies, PRs, code reviews)
• Strong debugging, profiling, and performance optimization skills
• String understanding of shell scripting

Nice to Have:

• Experience developing macOS applications in Objective-C (AppKit/Cocoa UI)
• Experience developing iOS/macOS applications using Swift/SwiftUI
• Exposure to Linux/Unix server administration
• Experience with data visualization tools or BI integrations
• Familiarity with uv Python package manager and hatchling build system
• Knowledge of battery management systems or other embedded hardware domains
• Experience with I2C and SMBus communication protocols
• Familiarity with hardware adapters such as TotalPhase Aardvark or Promira