Oleksii – AWS, Python, React

A B2B recruitment platform that automates the hiring process and leverages AI to identify top candidates from large applicant pools. By ranking profiles using AI-driven insights, it ensures recruiters focus only on the most relevant talent.

• Built AI agents using LangGraph and LangChain to enhance candidate evaluation workflows.
• Designed scalable architecture to support advanced AI features.
• Mentored a junior developer, encouraging collaboration and skill development.
• Contributed to CI/CD setup and created an internal React-based testing tool.

A learning platform focused on crypto trading, designed to simulate trading strategies and evaluate individual performance. It provides personalized guidance based on user results, helping learners progress through their trading journey.

• Introduced new platform features and extended existing functionality.
• Implemented subscription plans with multiple tiers.
• Added logging tools for better tracking and monitoring.
• Built functionality to manage and process new orders.
• Applied a redesigned UI/UX for improved user experience.

An educational platform enabling students to share and access study materials collaboratively. It features a subscription-based paywall for premium content and incorporates a gamified reward system with virtual coins to encourage engagement and contributions.

• Integrated a paywall script for premium content access.
• Uploaded and managed new learning materials on the platform.
• Resolved bugs and maintained overall code quality.

A SaaS platform providing comprehensive store management solutions through microservices and APIs. It supports customer registration, appointment scheduling, employee management, and real-time analytics, with offline capabilities for in-store use. The system integrates multiple services, including client collaboration, scheduling calendars, and admin interfaces for analytics and configuration.

1. Developed both frontend and backend components across multiple services.
2. Created microservices from scratch, including:

• A cron-job service to synchronize with third-party APIs.

• An analytics service to calculate waiting times, peak loads, and trends.

• Authentication and user management services.

• CLI tools for managing entities.

• Cloud integration microservices.

• Custom APIs tailored to client requirements.

An application designed to collect and analyze statistics from industrial meters (PDU, ENV, UPI) across multiple data centers. It notifies clients of meter statuses and potential issues. The system includes an admin dashboard for visualizing data as charts and tables, and embedded Python code running on a Beaglebone device collects, converts, and transmits the meter data.

• Configured CI/CD pipelines to streamline deployments.
• Built a custom Linux image for Beaglebone using Buildroot.
• Implemented new features and extended platform functionality.
• Delivered a pixel-perfect UI and refined the overall UX.
• Designed and integrated new API endpoints.
• Modeled and structured database entities.