Напиши текст вакансии для должности "DeFi Wallet Backend Developer". Название компании: "LATOKEN". Расположение: Санкт-Петербург. График работы: Полный день. Опыт работы: От 1 года до 3 лет. Ключевые навыки: 'Node.js', 'TypeScript', 'PostgreSQL', 'Kafka', 'JavaScript', 'REST', 'Blockchain'

LATOKEN exchange has 2 million accounts including 900k+ users of our Android app rated 4.4 by 25+ thousands of reviews. We leverage the next tech to make account opening as easy as Instagram. The technology and our Olympic sports culture can make us the first billion users digital wallet needed to free people to manage their financial life. For the past 3 years we have been developing our own blockchain (called “Lachain”) and we are now building the DeFi ecosystem based on it (including DEX, dApp, IDO, NFT etc). Today, is a great moment to join us as crypto is expanding into mainstream financial market and ex CFO of JP Morgan joined our advisory board and 2 presidents joined us in Davos. Role: DeFi Wallet Backend DeveloperUnit: DeFi Wallet Mission: Reliable, fast and scalable backend services. Mission description: Story: DeFi Wallet users need a responsive mobile app which is using reliable, fast and scalable backend services to manage assets and money at their fingertips even in times of ultra-high load. Goal: - Launch a complete backend for DeFi Wallet in Q4&#39;21: - Exclude 3rd party integrations to reduce costs - Integrate new chains fast - App must have a wide range of viral tools (send notifications etc.) How: - Deploy core blockchains, implement our own backend getaway and integrate it - Create unified API - Implement push notifications and viral tools Conditions: - Node.js must be used as well as current Payments services - Test and prod env has to be established from scratchFunctions:• Architecture : Participate in the development of backend architecture that allows to quickly connect multiple plug-in products maintaining low latency.• Research : Take time to research and then teach / explain / demonstrate to your team and other interested parties new developments in new technologies, Java, Microservices, Kafka, etc.• Connect services : Connect related trading and payments products to Mobile apps through a special Mobile Gateway service.• Support : Support the entire working of the mobile, whenever issues occur, to quickly fix the problem. And help other developers to locate the problem in their code.• Code Review : Pro-actively hunting for business-logic errors, code errors and other vulnerabilities in the code, written by you and your colleagues.• Improve : Improve, document and develop of the mobile services.Requirement skills and experience: 3+ years of commercial JavaScript backend app development. Experience in blockchain technologies. Experience in Node.js backend frameworks (Nest, Express, etc). Experience in backend architecture design. Experience in TypeScript. Experience in modern Web tech (REST, Sockets, etc). Strong relational database experience (PostgreSQL) . Message queues experience (Kafka, RabbitMQm etc). Experience in developing microservices. Understanding of different design patterns and their’s strong and weak points, SOLID. As a plus: Able to lead complex projects in a high pace&amp;pressure of capital markets environment. Finalist of a regional olympiad or top-tier university technical honours graduate. Fluent English.