Summary: GoMining is seeking a passionate Node.js Developer to contribute to a cryptocurrency investment project, focusing on payment gateways, game mechanics, and blockchain integrations. Highlights: 1. Develop cryptocurrency payment gateways and internal transaction systems 2. Integrate with various blockchains, DEX, CEX, and smart contracts 3. Design and implement horizontally scalable service architectures GoMining is a pioneering digital platform in the Bitcoin mining industry, dedicated to democratizing access to Bitcoin mining through innovative digital mining solutions and strategic partnerships. We work across exchanges, DeFi/Web3 platforms, mining infrastructure, and institutional investment initiatives to provide our clients with diversified opportunities in the digital asset space. We are looking for a passionate, goal\-oriented, and persistent Node.js Developer to join our unique cryptocurrency investment project. **Responsibilities*** Development of a cryptocurrency payment gateway. * Development of game mechanics. * Development of an internal transaction system. * Integration with blockchains: Bitcoin, Ethereum, Binance Smart Chain, Tron, DEX and CEX exchanges, and smart contracts. * Designing and implementing horizontally scalable service architectures. **Requirements** * Proven experience with production projects on Node.js and TypeScript. * Experience with Go. * Deep understanding of TypeScript, sufficient to write custom libraries. * Experience in system design, including architecture, database schema, and load calculation. * Expertise in PostgreSQL, including transactions, indexes, replication, aggregations (joins, pipelines, MapReduce), query analysis and optimization, data (de)normalization principles, and concurrency management. * Experience with RabbitMQ, Kafka, ZeroMQ, or other message queues, and a solid understanding of their structure, data storage and replication, and limitations. * Experience in building microservice architectures, including communication protocols, service authentication, and separation of responsibilities. **Benefits** * + - Professional growth: support for courses, conferences, and English learning (up to 100% coverage). - Work\-life fit: remote or hybrid format with flexible hours across international teams. - Paid leave: up to 28 vacation days \+ 8 company holidays \+ 5 personal days per year - Recognition programs: structured performance reviews and team awards. - Team culture: retreats in international locations (for example, company apartments in Cyprus).