Dmitriy Zaytsev Email & Phone Number

Moscow, Russia

- Have suggested and implemented several improvements in the company infrastructure allowing more reliable load balancing and minimizing downtimes during maintenances and failures.- Have deployed several new microservices in the production environment.- Have suggested and launched a system of duties among DevOps team allowing more convinient interactions with development department and more comfortable workload balancing during the working hours.Key responsibilities:- Creating new build and deployment automations and maintaining/adapting the existing ones (mostly via GitLab CI, ArgoCD, Ansible and a bit of scripting).- Close direct interaction with the development team helping them to keep development processes run reliably and smoothly.- Monitoring and troubleshooting java-based containerized microservices.- Migrating containerized microservices from Docker Swarm to managed K8s (Yandex Cloud via Terraform, Argo CD and Helm).- Managing API gateways for the external customers and integrations.

Moscow, Russia

- Have deployed several new topical web projects within the main news delivery system.- Have participated in a deployment of a new cloud infrastructure and moved company services there.- Have participated in creating of a new monitoring system.- Along with the development team have adopted and moved several legacy services to the cloud environment.Key responsibilities:- Along with the company DevOps team participated in the high-load project of news publications.- Supported development and QA processes via creating and maintaining CI/CD automations and helping colleagues to use them properly.- Administered, maintained and updated a large infrastructure of various load balancers, CDNs, on-premise K8s clusters, caching and application servers, etc.- Within everyday DevOpss' duties solved incidents as a third-line support specialist.

Moscow, Moscow City, Russia

- Have integrated Apache Kafka into company DWH system allowing smooth and clear data transformations and transfer between the legacy system and the new medical information system.- Have deployed several new supplementary systems including VOIP integration with the company call center, new service desk system and Zabbix-based monitoring system.- Started using Ansible along the department to ease daily administering tasks.- Along with the development team have switched several deployments to containerized microservices.- Have deployed a new company electronic document management.- Have deployed a new S3-compatible CDN.- Have moved several services to QEMU-KVM virtualization engine.Key responsibilities:- As a lead linux administrator managed and coordinated everyday department activities including daily planning, coordination between subunits, consulting and helping other administrators, etc.- Administered, maintained and troubleshooted the company medical information system allowing remote clinics to operate uninterruptedly.- Provided system architects consulting in the process of a transition to a new medical information system.- Interacted closely with the development team creating CI/CD automations for new services developed.- Maintained company infrastructural services like mail, telephony, file storages, virtualization hypervisors, accounting, databases, etc.- Consulted other departments regarding existing company DWH integrations and deployed new ones.- Solved incoming incidents as a third-line engineer.

Moscow, Moscow City, Russia

- Have tested and deployed in production a newly developed containerized mobile application backend.- Along with the development team have provided a smooth and safe transition of the company main platform to the new major version of PHP.- Have moved the whole company infrastructure to a remote data center allowing to save funds on the on-premise placement upkeep.- Have tested and deployed in production a containerized chating platform integrated with the main company product.- Have completely reworked monitoring and alerting system.Key responsibilities:- Provided development support, test and deploy automation for a high-load crowdfunding web platform.- Participated in system architect consulting.- Administered company linux-based services, virtualization, storage and networking.- Provided general coordination and management of other system administrators' activities.

Moscow, Moscow City, Russia

- Have reworked the company monitoring system and started to monitor networking quality between the branch offices.- Have provided network failover between the regional branch offices.- Have initiated Docker usage in the company infrastructure.- Have initiated and supported service desk and development transition to Atlassian products.- Have reworked from scratch company's mail security, introduced new spam filtering and security restrictions.- Have created from scratch a set of means to mitigate ransomware activities consequences.- Have been awarded with The Best in The Profession 2018 Award among 13 other IT employees of the company.Key responsibilities:- Administered various linux and windows-based services like mail, telephony, file storages, web services, accounting, databases, remote access servers, etc.- Administered company networks (Cisco) including set up of new branch offices.- Administered and updated VMware-based virtualization, storage systems and dedicated networking.- Participated in user support as a third-line specialist.

Moscow, Russia

- Have switched company's telephony to VoIP completely.- Have provided several new offices with infrastructure needed to begin production and selling of embedded controllers.- Have participated in development and setups of linux-based embedded controllers for power substations on remote sites.Provided various IT services for several small offices including:- user support;- network building and administration;- infrastructure building and administration, incl. mail, telephony, file servers, accounting, databases, etc.;- development and comissioning engineers support.

Moscow City, Russia

Provided system administration, engineering and general IT support for various customers. Mostly provided everything IT-based needed to run a small office included but not limited to networking, various servers (hardware and software), user workplaces, conditioning, electricity, access control systems, CCTV and many others.

Specialist, Information Security, Excellent

Professional retraining in IT Security (652 hours).

Specialist, Microbiology And Genetic Engineering, Excellent