Amantay Orynbayev

• Added Kafka integration; profiling showed 15% faster throughput and response time
• Implemented ClickHouse for analytics, reducing query time and database load by 20-25%
• Developed system scaling to multiple parallel WebSocket connections, increasing request throughput by 5 times
• Led AI automation integration to validate client data in research projects
• Improved hierarchical data rendering by storing it as a tree structure, achieving O(log n) performance

• Contributed to the development of a high-performance backend, handling 8.5M secure transactions per month
• Implemented recurring payments, increasing paying users by 10% and enabling predictable monthly revenue through
automation
• Built an onboarding platform that reduced merchant integration from 2 weeks to 3 days
• Managed payout processes and maintained payment gateways between merchants and the system
• Developed BFF architecture to optimize frontend-backend interaction and enhance performance
• Created comprehensive invoicing manual for clients, streamlining payment processes
• Created local deployment documentation for 12 microservices, accelerating developer setup

• Managed a $100K startup investment, overseeing budget allocation and resource efficiency
• Led a team of 10 developers, organized tasks using Scrum, and reviewed code to maintain high quality
• Oversaw complex modules including product management, real-time chat, an order system with 20+ statuses, and
integrated payment and delivery services
• Designed abstractions, created UML diagrams, and developed overall system architecture
• Used Domain-Driven Design principles to organize and develop the projects architecture

• Increased system speed 2-3 times by rewriting CS-Cart functionality using Lumen
• Wrote Oracle procedures and optimized queries to make the system faster
• Implemented service-repository architecture to organize code and streamline development
• Contributed to a team developing shared libraries used by multiple internal teams
• Supported Scrum ceremonies — including Sprint Planning, Review and Retrospective
• Performed A/B and Unit testing to improve product reliability

• Developed architecture with ERD and REST APIs for Sosedi and Bus using Laravel and Java Spring
• Designed and implemented REST API and complete architecture for the ScaleUp international project
• Integrated Elasticsearch to enable efficient tour search functionality on Triphacker project
• Built backend services for Triphacker project integrated with Vue

• Wrote backend for a computer vision system used for employee monitoring and performance tracking
• Developed an operator system on October CMS to streamline workflows
• Built a recruiting website with an admin panel for HR department operations