Personal details
Aleksandr M.
Technical skills
About
Staff Software Engineer with 14+ years of experience in developing and scaling web, desktop and mobile applications. Expert in Python, Java, Go programming languages. Designed, implemented and evolved cloud-native applications using event-driven, micro-services, service-oriented architectures. Hands-on experience in DevOps area with applying CI/CD, GitOps, observability technologies. Built ML, RAG, agentic systems. I thrive to solve business problems via simple and dedicated strategies, often not by coding alone. Worked with enterprises and startups, integrated Agile and Lean methodologies into R&D teams.
Work Experience
- Designed and built multi-tenant, cloud-hosted, AI-driven application from scratch.
- Architectured efficient and secure CI/CD pipelines which deliver new features to prod in minutes.
- Optimized web services, OLTP and background jobs for latency, concurrency and low CPU/RAM consumption.
- Integrated with a number of external services to prepare OLAP data storage for AI agents.
- Designed easy-to-use RAG knowledge base updating system with drift detection.
- Executed most of the technical, management, hiring aspects of a fintech startup.
Reddit ADS - ads supplier for “front page of the Internet” with 52M daily active users. Product provides targeted per user ad posts with low latency and in huge volumes. Supports different strategies to target users and ability to run multiple experiments for new strategies.
Responsibilities:
- Implemented new user categorization flows to improve ad targeting strategies;
- Optimized Spark applications with reducing execution time and resources consumption by 40%.
- Instrumented Spark-on-Airflow jobs for visibility and early problems detection.
- Increased test coverage for Spark and Airflow code bases which reduced error rate in half;