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TE
Tether Operations Limited
21d ago

Middleware Engineer - Fullstack(m/w/x)

Zürich
Full-timeRemoteSenior
AI/ML

Description

In this role, you will be at the forefront of local AI development, creating user-friendly applications and integrating them with advanced systems. Your work will involve building robust React applications and ensuring seamless interactions with distributed technologies.

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Requirements

  • 5+ years of experience in Fullstack development
  • Expert-level proficiency in Node.js/JavaScript for backend development and React frontend framework
  • Experience with performant data handling on constrained devices (via SQLite or similar)
  • Proven experience building and scaling distributed systems or event-driven architectures
  • Experience with containerization technologies (Docker) and orchestration platforms (Kubernetes)
  • Proficiency with databases, and a deep understanding of data modeling and optimization
  • Solid understanding of networking, security principles, and best practices for production systems
  • Experience with real-time data streaming and RPC implementations
  • Ability to work independently in a remote environment and communicate effectively across time zones
  • Experience with peer-to-peer technologies (Hyperswarm, libp2p, WebRTC) or similar distributed communication protocols
  • Familiarity with AI/ML inference APIs and OpenAI-compatible endpoints
  • Previous experience building AI SaaS or PaaS platforms
  • Knowledge of GPU resource management and ML framework infrastructure
  • Understanding of WebAssembly or edge computing paradigms
  • Contributions to open-source projects in relevant domains
  • Excellent English communication skills

Work Experience

5 years

Tasks

  • Develop React (Expo/Electron) applications with clean, modular architecture
  • Build user interfaces using modern React stack (TypeScript, RN Navigation, Zustand/Recoil/Jotai)
  • Implement local-first and local-only applications
  • Integrate mobile apps with distributed systems, local inference, and peer-to-peer layers
  • Utilize REST/WebSockets for async flows and secure data storage
  • Build native modules for iOS and Android as needed
  • Understand and apply offline-first systems, caching, and performance optimization
  • Integrate SDKs for payments, cryptocurrency, and AI models
  • Write reliable code with unit tests and end-to-end tests using tools like Maestro, Appium, or Playwright
  • Apply TypeScript across the full stack, both frontend and backend

Tools & Technologies

Node.jsJavaScriptReactSQLiteDockerKubernetes

Languages

EnglishBusiness Fluent

Benefits

Other Benefits

  • Visa/work-permit sponsorship
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