artemnishchuk

Senior Node.js Developer with 9+ years of experience building high-load backend systems using JavaScript, Node.js, TypeScript, NestJS, PostgreSQL, MySQL, Redis, Docker, and AWS. Designed and optimized scalable apps for millions of users, managing massive databases and enhancing query performance via indexing and caching. Extensive blockchain and fintech experience: integrated EVM and Substrate into wallets, built indexers processing millions of transactions, and managed smart contracts. Built event-driven architectures using Amazon SQS/SNS, and job queues. Led teams of up to 7 engineers, conducted code reviews, and mentored developers to improve code quality and performance. Managed 100+ production deployments, implemented CI/CD pipelines, and automated workflows to streamline development. Proficient in frontend development using React.js, Vue.js, and TailwindCSS. Worked in distributed Agile teams across multiple time zones, collaborating with engineers, product managers, and stakeholders. Passionate about TDD, clean architecture, and best coding practices (SOLID, DRY, KISS), eager to drive technical excellence and innovation in complex projects.