Job Details

Senior Fullstack Developer (Go + React) / Blockchain Engineer for 10arx, an AI-native trading terminal for prediction markets. Build 24/7 trading infrastructure. Remote contractor role.

10arx is an AI-native trading terminal for prediction markets. The system works 24/7, trades real money, and cannot afford to fail. Responsibilities include designing and building the on-chain execution system (transactions, contracts, wallet management, gas optimization), integrating with prediction market platforms and DEX, building a real-time data pipeline, implementing trading strategies, developing backtesting infrastructure, building monitoring and alerting, and writing frontend UI in React.

4+ years of Go in production (primary language). Real experience with blockchain (Solidity - ability to read contracts and interact with them). Real-time systems: WebSocket, streaming data, event-driven architecture. Fullstack: React + TypeScript (independent UI development). Experience with exchange APIs (CEX or DEX). Python as an additional language (scripts, backtests, data processing). Domain experience in fintech, crypto, DeFi, trading, prediction markets, or related domains (payments, betting, exchange infrastructure) is mandatory. Experience building systems where failure means loss of money. Actively use LLM tools in development. Languages: Russian (mandatory) + working English (documentation, APIs). Work style: Systems engineering, Blockchain engineering, Speed. Comfortable without a ready-made technical specification. Used to building from scratch and being the sole engineer on a direction.

Full ownership of the trading infrastructure domain. Direct interaction with CTO and founder. Remote, contractor. Competitive salary.