Davit Popkhadze @dudupopkhadze

• Built comprehensive payment plans feature enabling businesses to set up fixed-amount recurring payments as an alternative to revenue-based collections
• Architecting payment processing system with idempotent ACH direct debits, advance allocation algorithms, APR cap compliance checking, and multi-geo support
• • Optimizing Partner API performance, ensuring high availability and low-latency responses for external integrations
• Working on Go microservices with PostgreSQL, using SQLBoiler ORM, database-level constraints/triggers, and transaction safety guarantees
• Enhancing servicing infrastructure with collection management logic, payment status tracking, and automated Slack notifications for payment failures
• Maintaining YAML-driven API code generation pipeline, guaranteeing idempotency across distributed systems, and event-driven architecture patterns

• Collaborating with Mazeg as a consultant to plan and design front-end applications, ensuring best practices in performance and scalability
• Led the development of an AI agent for Shopify using LangGraph; normalized raw Shopify data to align with user queries, enabling accurate natural-language answers and simplifying store management
• Providing guidance on code quality standards and performance optimization practices, mentoring junior developers, and fostering team growth
• Consulting on the engineering of BOON, a crypto platform with integration of various crypto wallets and all social media platforms using React, Express.js, and React Query
• Assisting in the development of Wandero, an AI-powered travel assistant using React, React Query, NestJS, Python FastAPI, RAG, and LangChain. Built in PWA with native notifications and live location tracking. Contributed to a high output streaming solution for handling different AI agent streams and live user location tracking.

Technologies: TypeScript, NodeJS, React + RN, MongoDB, Redis, AWS, Twilio, Expo, Yjs

• Worked on integrating our platform features as a third-party service for various other products
• Built a React Native mobile app from scratch using Expo to improve student engagement
• Designed and built a high throughput Redis-based FIFO queue system for handling tutoring requests across multiple platforms
• Created a shared design system for web and mobile using react-native-web and Storybook
• Built an internal npm library to share components, hooks, contexts between web and mobile apps
• Migrated outdated user groups module to more modern netflix-like profiles architecture, introduced a new service for migrating and splitting data from one db to multiple dbs, guaranteed zero downtime and zero data loss
• Worked closely on a custom virtual classroom using Twilio and Y-Websocket for real-time collaboration
• Led migration of all our JS services from outdated Node 14 to latest v22

Technologies: TypeScript, NodeJS, NestJS, React, Redux, MySQL, MongoDB

• Built an educational platform using NestJS and React with focus on performance
• Introduced api rate limiting and caching to improve performance
• Improved app performance through React profiling and optimization techniques
• Optimized MongoDB queries through better indexing strategies

Technologies: TypeScript, NodeJS, NestJS, React, Redux, MySQL, MongoDB

• Engineered client-side mongoose like data models to reduce API calls and improve performance
• Developed a custom service worker for caching and offline support
• Developed a customizable UI framework for end-users

Technologies: TypeScript, React, Canvas-API, Interpreter, Parser, Compiler

• Engineered Jeka, a virtual dog-robot that follows custom programming commands
• Created a custom programming language and interpreter that runs in the browser. Try it out

PUBLICATIONS

• Co-Host of the Four Loop Podcast
• My Talk about JS Ecosystem
• NodeJS: Modify Running Server Behaviour From Outside
• One UI-Kit to rule them All
• Dependency Injection in TypeScript
• Reverse Engineering React Hooks