DevOps / System administration – Gitlab CI, Linux, Security, Exim, Bash, PHP, Python.DVC (Iterative, Inc.) - Python, Git, cloud services.Consulting on Elasticsearch cluster performance problems (8 nodes, ~5Tb of data).Participating in the ODS ML4SG (machine learning for social good) volunteer project - people detection on drone cam shots for the Liza Alert organization. Tensorflow, Keras, NVidia DALI, Intel DAAL, RetinaNet (SSD+FPN+Focal loss), ResNet, MobileNetV3.

Edadeal is the most popular service about FMCG discounts in Russia. It was started as a mobile application startup, grown to a very popular service and have been acquired by Yandex.- Provide guidance on architecture and technologies to other team members - backend development, DevOps, data engineering. Headhunting and tech interviewing of candidates.- First in the world geo-targeted advertising service with proof-of-purchase using scan codes.- FMCG product titles classifier as a part of automated data importer.- Lead and grew the infrastructure from 1 to 50+ virtual servers serving over 100Tb of data per month. Wrote ansible playbooks to manage servers and services. Introduced the Gitlab CI and docker to automate building, testing and delivery. Achieved 1 second time from `git push` to production for some services.- Introduced an in-house analytics platform with YT, Airflow and Elasticsearch. Saved $10,000 of monthly costs on 3rd-party solution. Elasticsearch cluster of 30+ nodes.

Development of services to gather GPS-tracks from millions of devices and prepare their data for the billing and analytics systems. GIS development. Cryptography protocols analysis and cryptographic software development. CryptoPro™ HSM integration. Deployment and maintenance of demo stand environment (~50 services, CI/CD, infrastructure management).

Lead the backend development team (REST API, back-office, goods classifier and automated data import pipeline) and managed the infrastructure on AWS.

Web services development. Extension of common Python infrastructure in the company (common libraries and packaging). Administration and support of company's internal Github Enterprise service (1000+ active users, heavy load from CI robots).

System administration of the university computing center servers, core network equipment, other hardware and services. Development of a billing system for the university internet gateway and small scripts / tools to automate administrative tasks.