Paul – Python, React, Node.js

Advanced local agent.

• Implemented an agentic harness from scratch, adapting Qwen 3 architecture for pesonal needs.
• Successfully integrated various advanced features, like agentic skills, MCP, memory, tooling harness, etc.

Security services and automated client support on various commercial buildings.

• Designed and built an end-to-end LLM-powered support automation workflow using LangGraph
• Architected the system to handle client support inquiries autonomously from intake to resolution
• Reduced manual triage workload required from the support team through intelligent automation
• Implemented automated inquiry classification and routing logic to streamline support operations
• Improved overall user experience and support quality through modern LLM-based solutions
• Delivered measurable efficiency gains by minimizing human intervention in repetitive support tasks

Key business insights dashboard for a global security group.

• Developed a partner dashboard for a key European security solution provider, delivering a centralized interface for monitoring and management
• Introduced multiple new integrations into the dashboard, expanding connectivity with third-party systems and services
• Increased overall system transparency and visibility for partner teams through improved data access and reporting
• Led the adoption of TypeScript across the codebase, establishing stronger type safety and coding standards
• Enhanced code quality and long-term maintainability through consistent TypeScript implementation
• Reduced runtime errors by 20% as a direct result of the TypeScript migration
• Implemented internal tooling for AWS deployment workflows, streamlining the release process
• Built source code bundling automation to improve build efficiency and consistency
• Developed automated testing infrastructure to increase code coverage and reduce manual QA effort

A financial wellbeing platform and app that allows partner-company employees to access a portion of their earned wages ahead of payday.

• Led the refactoring of a legacy jQuery codebase into a modern, scalable React architecture
• Eliminated significant technical debt through systematic modernization of the frontend layer
• Improved application loading time as a result of the React migration and optimized rendering
• Established a scalable component-based structure to support future feature development
• Collaborated closely with the UI/UX team to redesign key user interfaces across the product
• Translated design feedback and user insights into concrete frontend improvements
• Enhanced overall user experience through iterative, feedback-driven UI updates
• Contributed to increased user engagement through more intuitive and performant interface design

Scooter sharing company.

• Co-founded and led end-to-end development of a React Native mobile application from concept to production launch
• Successfully shipped the app on both the App Store and Google Play
• Owned full technical and organizational responsibility throughout the project lifecycle
• Conducted direct meetings with local authorities to define and formalize operating regulations
• Negotiated and established rules around parking zones, speed limits, and fine structures
• Managed stakeholder communication between the product team and government representatives
• Ensured regulatory compliance was embedded into the product from the ground up

Browser massive multiplayer game.

• Built a comprehensive admin dashboard for a multiplayer game featuring interactive charts and multi-panel layouts
• Implemented data export functionality to support operational reporting and analytics needs
• Designed the dashboard architecture to handle complex game data at scale
• Refactored a complex monolithic codebase into modular, reusable components and services
• Improved long-term maintainability by decoupling tightly coupled legacy code
• Stabilized the existing architecture through systematic restructuring and technical debt reduction
• Established reusable service patterns to accelerate future development

Blockchain smart contracts.

• Implemented a secure message queue architecture for reactive microservice data management and a command line tool to configure it.
• Implemented multiple microservices from scratch for message routing, document management, and notification transmitting.
• Collaborated across international teams to optimize communication and strengthen business relations between London and Kyiv teams.