semenchuk

- Collaborated as a member of the systems engineering team, managing and optimizing AWS infrastructure to support high-performance applications. - Partnered with cross-functional development teams to enhance technical standards and align infrastructure with project requirements. - Wrote clean, well-documented, and thoroughly tested code, ensuring reliability and maintainability across various projects. - Actively contributed to project design and implementation, leveraging AWS services and DevOps practices to improve deployment efficiency and system scalability.

- Contributed to multiple blockchain-focused projects, including: - Building an EVM blockchain indexing system similar to Etherscan, with a GraphQL API inspired by The Graph, enabling efficient blockchain data access. - Developing a Portfolio management project, where I queried data insights and built APIs to support real-time financial analysis and tracking. - Designing a streaming service for historical and real-time blockchain data from various EVM chains, ensuring data accuracy and efficient processing to multiple destinations. - Built AI-powered features to enhance platform functionality and user experience: - Developed a custom chatbot using Vercel AI SDK to assist users in generating, transforming, and filtering functions. - Built a text-to-SQL converter with advanced prompt engineering for data insight retrieval. - Created custom MCP tools with Nest.js - Developed and optimized APIs (GraphQL, REST, gRPC) to support high-load environments, facilitating seamless data access across distributed systems. - Implemented solutions for managing real-time data streams and chain reorganizations, maintaining data integrity and reliability. - Played an active role in project lifecycle stages, from design to production, leveraging a wide range of technical skills. - Actively engaged in code reviews and knowledge-sharing within the team, promoting best practices for secure and scalable blockchain backend development.

- Developed and maintained a large-scale enterprise project for a U.S.-based client, integrating customer service support systems with unique ticketing and ordering APIs, such as Amazon, Salesforce, Shopify, and Genesys. - Worked with a microservices architecture, utilizing modern technologies like Node.js, React.js, Kafka, MongoDB, Redis, and TypeScript, to build scalable and modular systems. - Collaborated with cross-functional teams to implement solutions that improved workflow efficiency and enhanced the customer experience. - Built and maintained integrations with various third-party platforms, ensuring seamless data exchange and reliable API interactions. - Contributed to both frontend and backend development, leveraging full stack skills to ensure system coherence and performance.

Worked on various enterprise projects, developed a data representation solution for IoT devices, built cloud-based content management solutions, and focused on creating scalable, reliable solutions.