Sergei Krainev Email & Phone Number

Санкт-Петербург, Россия

Tech stack:Python3.7+, RabbitMQ, Sentry, Jenkins, Gitlab, Openstack, Go (minimal), Grafana, Prometheus.Tools/libraries:Flake8, Black, tmux, tox, stestr, vim, PycharmResponsibilities:- Working with Openstack components: neutron, octavia.- Conducting development with elements of the SCRUM methodology, both as a participant and as a leader.- Conducting code reviews of colleagues.- Bug fix and work with the team’s internal technical debt- Work with internal projects of the company.- Interaction with representatives of other teams on development approaches for cloud teams.- Analysis of a legacy backlog and gradual closure of technical debt and bugs- Fulfilling the role of Security Champion in a team in the IS direction according to the maturity model (TMM https://habr.com/ru/companies/provectus/articles/448458/)- Conducting daily, retro, TBR, planning meetings.Achievements:- Updating to new versions of Openstack projects (Neutron, Octavia) with the transfer of custom patches.This made it possible to unlock the development and release of new functionality, which subsequently attracted new clients to the company.- Developed and implemented a script for updating amphoras in semi-automatic mode (with interruption in case of errors). This allowed us to reduce the update time from a couple of weeks to several nights (due to minimizing the load on employees and users).- Writing and systematizing service documentation.This made it easier for the support team to resolve issues (questions without documentation took +1 hour to discuss and find a solution)It also simplified the process of hiring new employees to the team.- Improving the information security direction in development through the addition of SAST tools to CI, which reduces the risk of application vulnerability.

Cаратов

Tech Stack:Python2.7/3.7, internal data organization systems (instead of classic databases), Docker, network device API (Arista, Juniper, Cisco), VLAN, Vxlan, BGP.Responsibilities:- Participation in bugfixes and work with technical debt.- Discussion of the Roadmap with the team, planning, decomposition of tasks and their implementation.- Code review- Writing code, unit tests, functional tests and e2e tests.- Configuring test scripts on network devices with further testing of the functionality of the configured configurations (running ICMP traffic tests)Achievements:- Added e2e for key functionality and validated user scenarios with the configuration of network devices. This increased the quality of the product and reduced the work time of testers and support, since any changes were checked by these tests and caught regressions.- Implemented ipv6 support functionality, which made it possible to attract new clients for whom ipv4 alone was not enough.- Ported some of the functionality to new libraries for asynchronous request processing, which made it possible to make part of the API asynchronous (that is, not waste time processing synchronous requests)

Moscow

Tech stack:Python2.7/3.7, asyncio, aiopg, aiohttp, RabbitMQ, Postgres, SOAPResponsibilities:- Support of internal services integration with:Yandex Metrica, Yandex Direct, Google Analytics, Google Adwords through their REST API. ○ Update old versions of programs integrated with Yandex Direct and Google Adwords APIs.Achievements:- The algorithm has been developed for clients with limit of points (the number of calls to the Yandex API)- The structure of monolithic projects was optimized by dividing them into microservices.- Added the use of flake8 and black linters to CI, which causes concern about code readability.- Brought service logs to a common company standard, which ensures their loading into Graylog.

Saratov

Work tasks and responsibilities: - Support and development Heat in Mirantis Open Stack.- Development Heat project for Openstack.- Leading Heat Mirantis team.- Leading community Heat team as a PTL (during Mitaka release)- Implementation several features for Heat upstream project.- Participating in Openstack summits.- Preparation records of demo for new features.- Writing and fixing with Bash, Python, Murano PL, puppets scripts and files.- Communication with management sales team.- Involving in development Tool for deploying Openstack on Kubernetes.- Improve current documentation, Fix Heat related functionality, add SSL support based on Nginx server.Leading team and involvement in development of several Murano applications: - Ci/Cd pipeline (Gerrit, Jenkins, LDAP, Zuul and Nodepool) - Using JJB for creating Jenkins jobs - Kubernetes applications (Cluster, Pod and some other Docker based apps)

Saratov

Work tasks and responsibilities: - Openstack Heat project development, bug fixing.- Contributing to LBaaS Openstack and to neutron projectю- Integration Neutron features to Heat project.- Work with customer's escalations.- Python and Bash development.- Getting Core-reviewer status in Heat project.- Work with internal Heat team and community Heat team.- Mentoring young engineers.- Preparation records of demo for new features.- Support and development Heat in Mirantis Open Stack.

Saratov

Beginning of work in Mirantis: - Project: Cisco ACE - I got basic level in some programming language such as: Bash, Expect, Tcl, Python. Also I have experience of working with makefiles at now.Later project and initiatives related with Openstack:- FUEL.(short period) For testing instruction by installation Openstack with FUEL.- STF (Swift-task-force) . Development new features for component Swift. The main branches of project: development cryptography functionality, implementation separate replication servers and new tier level for ring (region).- Openstack RND (continuation of STF)- Research Ironic project, patching oslo-incubator (using new base test class), patching glance (using new test pool for oslo Project).- Openstack RND (Heat Researching) Writing architecture document, autoscaling demonstartion for Intel project, writing blog-post and presentation dedicated havana release.- Openstack RND (Swift Researching and Contributing) Develop Dedication Replication NetworkAchievements:- Experience working as Contributors of Openstack. - Knowledge of data base and python module (sqlalchemy) for working with it. Work with migration for DB. - Confident use python built-in functions. - Working with git and git-review, tmux, pep8.- Deployment swift experience. - Advanced knowledges about swift architecture. - Experience working in team with QA and Deployments. - Confident use python test modules such as: testr, nose, tox.- Experience in preparing and organization demonstation with customer.- Knowledges about Heat architecture.- Deployment Heat experience.- Using Heat templates for orchestrations stacks. Using quantum CLI for configuration network.- Experience in iptables configuration.- Experience of working with oslo and glance.

Магистр, Управление В Технических Системах, 5.0

Инженер, Управление И Информатика В Технических Системах, 5.0