Alexander Klimenko Email & Phone Number

In the process of cloudification, developers faced challenges due to the lack of necessary tools and the complexity of existing DevOps instruments. As the Head of DevOps, I simplified internal tools and automated the deployment process and scaling for several teams.Simplified Corporate Infrastructure as code approach, by reducing • number of hand operations from 20 to 2,• new IAC deployment time from 5 days to several hours,• minimal needed repository from 2 to 1.by:• designing per-team IAC deploying bootstrap process,• implementing password generation and secret storage,• redesigning code structure from instrumental to functional approach.• Increased code security by implementation set of GitLAB patches, preventing projects and groups deletions.Spearheaded the transition to Corporate IAC of three teams.Simplified transitions from Google Suite to Yandex 460 by spearheading development of: • imap backup microservice, • caldav synchronization & migration microservice.Technology stack:Python: Django REST Framework, CeleryDBMS: PostgreSQL, RedisDevOps: gitlab-ci, terraform, kubernetes, dokku, helm

• Implemented Enterprise Service BUS Master Data Management Process Integration approach, by: - designing MDM-PI architecture, - designing data contract protocol, - implementing MDM-PI infrastructure of repositories and - CI/CD data validation pipelines. - developing AMQP json data validation proxy microservice, - developing MDM-PI contracts based code generated data storage service,• Extended Django REST framework microservice chassis with Kubernetes CI/CD deployment pipeline.Technology stack:Python: Django REST Framework, CeleryDBMS: PostgreSQL, Redis, RabbitMQDevOps: gitlab-ci, terraform, kubernetes, dokku, helmJavaScript: TypeScript, Vue.js, React.js, mobx, agGrid

Implemented straightforward enterprise employee user account management system by:• introducing existing account data cleanup protocol,• developing employee data aggregation microservice,• implementing 1c to LDAP singer.io based protocol data synchronization.Extended microservices chassis with OIDC by implementing:• Django based OIDC provider,• Django relied part library,• OIDC BackChannel logout protocol.• Simplified microservice integration and remote code-generation, by extending DRF OpenAPI implementation with:• human readable enums notation,• extended foreign key relations notation,• extended enum field notations.• list field notation,• deprecated field marking,• model title description lookpus for overrided serializer fields.Implemented mass data build data collection system by developing:• Django document first data management library,• agGrid based building data management frontend interface.Sped up front end interaction by implementing RESTQL.Developed customer data aggregation microservice, by designing and implementing extendable data architecture.Technology stack:• Python: Django REST Framework, Celery• DBMS: PostgreSQL, Redis• JavaScript: TypeScript, Vue.js, React.js, mobx, agGrid

Today this is the most interesting and complicated service I've ever developed. Built from ground it was started as part-time job and continued with cross-functional team. Officially my position was Lead developer but it included function of at least three: developer, manager, system administrator.Achievements- Designed, developed and put into production high-loaded relied geographically distributed scalable content delivery system.- 340 Gbit/s traffic generation;- 80k requests per second;- 15PT user file storage;- 70 servers installation;- 5 geographical locations.Technology stack:- Python: Django, Celery, Django Rest Framework, TastyPie.- Nginx: mod_mp4, mod_flv.- Debian: iptables, clusterip, powerdns, systemd, aptitude, PowerDNS, PDNSD, rsnapshot, ansible, fabric, zfs, flashcache, BIRD Internet Routing Daemon, PXE, HandBrake.- HP: SPP, SUM.- JS: jQuery, BackBone, Angular.- DBMS: Redis, RabbitMQ, Memcache, FaceBook MCache, DataStax Cassandra, Percona Mysql Server (InnoDB, GTID Replication).- CSS+HTML: Bootstrap 3.- Monitoring: Ubersmith, Zabbix.- Continuous Integration: Travis, CircleCI, GitHub, ZenHUB.

Data mining, product analysis, traffic structure analysis, site performance prediction and reporting, Google Analytics API integration, advertising reports, new advertising formats integration, advertising projects development, internal advertising software development.

• Software development and support. • Special advertisement projects. • E-mail delivery system. • Branding impression delivery system. • Video hosting system.

• Economics teaching. • Practical trainings. • Examination.

Doctor Of Philosophy (Phd), Economy And Management

Specialist, Information Technology And Economy, 4.7