Job Details

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

10arx is an AI-native trading terminal for prediction markets. The system operates 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 DEXs, building real-time data pipelines, implementing trading strategies, developing backtesting infrastructure, and building monitoring and alerting systems. Frontend development on React for management, monitoring, and visualization is also required.

4+ years of Go in production (primary language). Real blockchain experience. Solidity: ability to read contracts and interact with them. Real-time systems: WebSocket, streaming data, event-driven architecture. Fullstack: React + TypeScript for independent UI development. Experience with exchange APIs (CEX or DEX). Python as a secondary 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 errors lead to financial loss. Active use of LLM tools in development. Languages: Russian (mandatory) + working English (documentation, APIs).

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