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David Careers

FullStack Developer (UX Design) || Burlingame / Menlo Park, CA / Seattle, WA (Onsite) || Fulltime

Posted yesterday

ace stackSeattle (WA)
Software DevelopersCustom Computer Programming Services

SENIORITY

Senior

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About the role

Full Stack Developer (UX Design) Location(s):Primary: Burlingame, CA & Menlo Park, CA (On-site – 5 days/week) Secondary: Seattle, WAWork Type: Onsite 5 days (No remote/hybrid option)
Visa Requirements: Independent Visa holders only
The Role: We’re looking for a contract Full Stack “Ninja” Developer who can move fast across both web and native mobile platforms. You’ll build full-featured, AI-first user experiences using modern full-stack frameworks (e.g. Node.js + React/Next.js) and native mobile stacks (Swift for iOS, Kotlin for Android), all integrated with scalable AI backends and robust cloud infrastructure.
Key Responsibilities:
  • Build and ship production-grade web apps using Node.js + React/Next.jsDevelop performant iOS apps with Swift/SwiftUI and Android apps with Kotlin/Jetpack Compose
  • Integrate AI capabilities: LLM APIs, tool use, vector DBs, memory, retrieval-augmented generation (RAG), and evaluation loops
  • Design secure, scalable backend services in JavaScript/TypeScript or Python to orchestrate agentic workflows
  • Deploy on AWS or GCP, using Docker, CI/CD, observability tooling, and IA (Terraform or CDK)
  • Rapidly prototype, iterate, and polish features in tight collaboration with product, research, and design
Qualifications:
  • Deep experience with Node.js, React, and modern frontend architecture
  • Native app development expertise in Swift/SwiftUI (iOS) and Kotlin/Jetpack Compose (Android)
  • Backend experience with Node.js, Python, FastAPI, Next.js, LangChain, or similar frameworks
  • Familiarity with cloud platforms (AWS or GCP), containerization, IaC (Terraform/CDK), and continuous delivery pipelines
  • Strong product instincts and a passion for building clean, performant cross-platform apps
  • Demonstrated success shipping AI-first features or applications powered by LLMs or agent frameworks
Bonus Points: Experience using AI development tools like Claude Code, Cline, or Copilot++ in production Familiarity with AI/ML infrastructure and workflows, including:
  • Model training and fine-tuning pipelines using PyTorch or JAXOn-device inference with Core ML, NNAPI, or quantized model deployment
  • High-performance systems experience with C/C++, Rust, or Go for native modules, low-latency pipelines, or WebAssemblyFamiliarity with the latest developments in AI technologies
  • If interested, please share resume to Bishnuu@acestackllc.

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