Alexander Rebrik

Maintain consistency in tasks and clientele while transitioning to distinct organization, showcasing adaptability and seamless integration. Showcase unwavering commitment to efficiency by persisting with same technology stack for optimal

performance. Add significant value by addressing and resolving complications arising from excessive database and cache calls.

• Achieved 10% reduction in overall infrastructure expenditure by orchestrating traffic refinement network between clients and servers.

• Implemented innovative 'clusterless stateful' backend system to address challenges related to excessive database and cache calls.

• Focused on enhancing backend team, refining system frameworks, and optimizing cost-effectiveness. Resulted in increased competence through concentrated efforts on augmenting backend team.

• Led inception of cutting-edge 'cluster-less stateful' backend system, contributing to more streamlined and efficient workflow.

• Delivered an AI-powered "Virtual Recruiter" avatar that automates first-round interviews, cutting manual screening time and enabling 24/7 candidate intake (OpenAI GPT-4o, Google Gemini, HeyGen).

• Orchestrated real-time speech pipeline—Deepgram STT → LLM question generation → ElevenLabs TTS—achieving sub-3-second latency for natural back-and-forth dialogue.

• Built a unified Python SDK and event-driven service layer using asyncio that abstracts 5+ AI providers, trimming new-model integration effort by 70 %.

Engineered and deployed robust server architecture with interconnected services (lobby, bots, game, frontend) using Redis Pub/Sub, ensuring seamless communication and enhanced functionality. Drove innovation and cost-effectiveness in solutions, contributing to company's growth and success. Ensured ongoing success of Panoramik by maintaining adaptability and responsiveness in dynamic game development environment.

• Designed and implemented client-server communication API, aiming for minimum 50% reduction in server costs, demonstrating commitment to cost-effective solutions.

• Developed and launched player-versus-player (PVP) gameplay feature, boosting user retention by 10%.

• Managed high-load web application development for mobile games, overseeing cloud environment with 400,000 daily active users and 35,000 concurrent online users on AWS.

Infrastructure Stack:

• Utilized Nginx, Docker, RabbitMQ, Kafka, Redis, PostgreSQL, GitLab, Kubernetes, CloudFront, Confluent, AWS EC2, ClickHouse, Sentry, Prometheus, and Grafana for optimal performance and scalability.

Python Stack:

• Leveraged Flask, aiohttp, SQLAlchemy, Celery, Confluent Kafka, Pytest, WebSockets, Celery, and uWSGI for efficient web application development.

• Enhanced user experience through development of engaging features, such as player-versus-player gameplay functionality.

Initiated career as Developer, achieving design of web service dynamically generating network maps for selected supermarkets, illustrating all connected devices. Spearheaded creation of innovative solutions that not only streamlined operations but also contributed to cost-effectiveness and efficiency in managing network-related challenges.

• Implemented advanced functionality enabling remote access to network devices via SSH directly through web interface, enhancing overall system control.