Javascript Senior Software Engineer

Tether

Location: United States
Job Type: full-time
Salary: Unknown
Posted: July 1, 2025

Job Description

Job description

Join Tether and Shape the Future of Digital Finance

At Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing the power of blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, all at a fraction of the cost. Transparency is the bedrock of everything we do, ensuring trust in every transaction.

Innovate with Tether

Tether Finance: Our innovative product suite features the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions worldwide, alongside pioneering digital asset tokenization services.

But that’s just the beginning:

Tether Power: Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining using eco-friendly practices in state-of-the-art, geo-diverse facilities.

Tether Data: Fueling breakthroughs in AI and peer-to-peer technology, we reduce infrastructure costs and enhance global communications with cutting-edge solutions like KEET, our flagship app that redefines secure and private data sharing.

Tether Education: Democratizing access to top-tier digital learning, we empower individuals to thrive in the digital and gig economies, driving global growth and opportunity.

Tether Evolution: At the intersection of technology and human potential, we are pushing the boundaries of what is possible, crafting a future where innovation and human capabilities merge in powerful, unprecedented ways.

Why Join Us?

Our team is a global talent powerhouse, working remotely from every corner of the world. If you’re passionate about making a mark in the fintech space, this is your opportunity to collaborate with some of the brightest minds, pushing boundaries and setting new standards. We’ve grown fast, stayed lean, and secured our place as a leader in the industry.

If you have excellent English communication skills and are ready to contribute to the most innovative platform on the planet, Tether is the place for you.

Are you ready to be part of the future?

About the job:

As a Senior Software Developer, you will be a part of the team that building desktop and mobile AI apps on top of new and cutting edge Tether SDK.

Responsibilities:

AI-Driven Desktop Integration
You will develop and maintain backend services and APIs that power AI-enhanced desktop applications. These services support intelligent features like local inference, contextual awareness, and model interaction, tailored specifically for Electron-based or hybrid clients.
Platform-Aware API Design
Collaborating closely with desktop and React Native teams, you will shape API contracts that reflect platform constraints and performance considerations — ensuring native-like responsiveness and cross-platform consistency.
Scalable Model Invocation & Resource Management
You’ll contribute to backend services that handle concurrent model invocations, manage GPU/CPU workloads, and intelligently queue or throttle requests based on system constraints — ensuring smooth AI on-device performance.

Job requirements

+6 years of experience working with Nodejs/JavaScript.
Experience with Desktop app development (Electron, Tauri, other)
Experience working with React Native or bridging backend systems into mobile/desktop hybrid stacks
Experience optimizing performance and resource usage on desktop/mobile clients
Have actively participated in the development of a complex platform
Ability to quickly learn new technologies
Good understanding of security practices

Nice to have

Familiarity with secure inter-process communication
Familiar with Peer-to-Peer technologies (Kademlia, bittorent, libp2p)
C++/Swift/Kotlin skills are a plus
Familiar with AI/Agentic domain applications (RAG, AI SDKs)
Familiarity with real-time data delivery (NodeJS/other streaming)

🎯 Who is this job for?

This role is best suited for a Senior JavaScript Engineer with 6+ years of experience, particularly strong in Node.js and desktop app development (Electron/Tauri). Ideal candidates are comfortable building performant, scalable APIs for AI-powered cross-platform apps and collaborating with frontend teams (React Native). Experience with resource management, secure IPC, and P2P or AI technologies is a major plus.

💬 Potential Interview Questions

What are the benefits of using Node.js in an AI-enhanced desktop application context?
Node.js supports fast, event-driven I/O operations and works well with Electron, making it ideal for handling backend logic, local model invocation, and IPC in desktop AI apps.
How do you bridge backend systems with Electron or hybrid app frameworks like React Native?
Use IPC mechanisms, REST or WebSocket APIs, and shared modules to ensure seamless communication between backend processes and frontend components.
What strategies can be used to manage system resources (CPU/GPU) during concurrent AI model invocations?
Queue requests, set resource limits, prioritize tasks, and use worker threads or subprocesses to balance performance and responsiveness.
How would you design a platform-aware API that performs optimally across desktop and mobile environments?
Consider device capabilities, minimize payload sizes, provide fallback options, and optimize for latency and bandwidth on mobile vs. desktop.
What are common performance bottlenecks in Electron apps and how do you address them?
Bottlenecks include heavy main thread usage and memory leaks. Use background workers, lazy loading, and performance profiling to mitigate them.
How do you ensure secure inter-process communication in a desktop app using Node.js and Electron?
Use context isolation, validate messages, avoid exposing Node.js APIs in renderer, and use encrypted channels where necessary.
What are the key considerations when integrating AI features into a desktop application?
Focus on local vs. remote inference, resource usage, model size, update mechanisms, and maintaining responsiveness during heavy processing.
What are some best practices for securing backend services in cross-platform apps?
Implement authentication, rate limiting, input validation, secure data storage, and transport encryption (HTTPS, secure sockets).
How do you manage real-time data delivery in Node.js applications?
Use WebSockets, EventSource, or streaming APIs, and handle reconnections, message ordering, and performance monitoring.
What experience do you have with peer-to-peer protocols, and how would you apply them in a desktop application?
Experience with Kademlia or libp2p allows building decentralized communication layers; in desktop apps, it enables secure, serverless data sharing or messaging.

📋 Job Summary

Tether, the leader in blockchain-based digital finance, is hiring a Senior JavaScript Engineer to build AI-powered desktop and mobile apps on its cutting-edge SDK. Work remotely with a global team on innovative platforms like USDT, KEET, and AI-native apps, using Node.js, Electron, and React Native. You'll design scalable APIs, manage resource-intensive AI features, and help shape secure, high-performance hybrid apps. If you're passionate about fintech and emerging tech, this is a rare chance to help redefine the global financial ecosystem.