03/06/2026 updated

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20 % partially available

DevOps Team Lead, Lead DevOps Engineer

Valencia, Spain
Valencia, Spain

Profile attachments

Sebastian Vaisov CV Full.pdf

PHPAgile MethodologyArtificial IntelligenceAmazon Web ServicesApache HTTP ServerApache TomcatAtlassian ConfluenceAtlassian JiraMicrosoft AzureBackup DevicesBash ShellUbuntu (Operating System)CentOSCloud ComputingConfiguration ManagementProgram OptimizationComputer ProgrammingDatabasesContinuous IntegrationCouchbase ServersShard (Database Architecture)Debian LinuxDebuggingLinuxDevOpsRAIDElasticsearchMessage Transfer AgentHAProxyWeb ServersIcingaVirtual Private Networks (VPN)Python (Programming Language)Network SecurityPostgreSQLMariaDBMemcachedMicrosoft SQL ServersMongoDBMySQLNagiosNetwork AdministrationNGINXNode.jsScrum MethodologyRabbitMQRedisAnsibleNewrelicPrometheusAkamaiRubyServer AdministrationSystem ProgrammingVirtualizationZabbixDatadogData/Record LoggingScriptingGoogle CloudLoad BalancingFluentdIstioSystem AvailabilitySaltStackGrafanaCachingReliability of SystemsFirewalls (Computer Science)PostfixGitLabGitContainerizationKubernetesInfluxDBIptablesCassandraRancherBare MetalCloudflareApache KafkaOperational SystemsCloud MigrationTeamcityRundeckAmazon Simple Queue Service (SQS)TerraformSplunkSoftware Version ControlDockerJenkinsVMwareOracledb
agile methodologies, Agile, Akamai, SQS, AWS, Ansible, Apache, Kafka, Tomcat, AI, backups, backup solutions, bare-metal, Bash, caching, Cassandra, CentOS, cloud, cloud computing, cloud migration, Cloudflare, Programming, Configuration Management, Confluence, containerization, CI/CD, Couchbase, Logging, databases, Database, DataDog, Debian, DevOps, Docker, ElasticSearch, Firewalls, Fluentd, Git, GitLab, GCP, Grafana, HAProxy, Icinga, InfluxDB, Computer Science, IPTables, Istio, Jira, Jenkins, Kubernetes, Linux, Load Balancing, MariaDB, Memcached, mail servers, Azure, MSSQL, MongoDB, MySQL, Nagios, Network Administration, network security, Newrelic, Nginx, node, Operating Systems, Oracle DB, PHP, Postfix, PostgreSQL, Postgres, system optimization, Prometheus, Python, RAID, RabbitMQ, Rancher, Redis, system reliability, Ruby, RunDeck, SaltStack, scripting, Scrum, Server Administration, sharding, debugging, Version Control, Splunk, high availability, System Programming, TeamCity, Terraform, Ubuntu, VPN, virtualization, VMware, Web Servers, Zabbix

Languages

EnglishFluentRussianNative speakerLithuanianNative speaker

Project history

CTO

Benme
* Strategic Product Development: Collaborated with clients for requirements
gathering. Directed user-friendly feature development, improving usability and
performance. Vetted and outsourced to development agencies.
* Stakeholder Engagement: Supported CEO in investor pitches. Achieved GDPR
compliance, enhancing platform trustworthiness.
* Technical Leadership: Mentored and coached 6-member team, building skills,
engagement, motivation, and high-performing workforce.
* Infrastructure Management: Secured and optimized infrastructure for the platform
and internal tools on AWS, leveraging services like EKS, RDS, SQS, Auth0, Sentry,
Grafana/Prometheus and others.
* Operational Excellence: Managed daily operations with a balanced approach,
emphasizing productivity, accountability, and team well-being to prevent burnout,
resulting in a motivated and efficient team.

DevOps Team Lead

Syntropy
* Team Building & Agile Transformation: Expanded DevOps team from 1 to 7
members within a year. Implemented Agile workflows, enhancing team dynamics,
happiness and productivity.
* Strategic Leadership & Coaching: Guided infrastructure planning, tool integration,
and coached team using neuroscience principles, fostering technical and personal
growth.
* Process Optimization: Developed roadmap focused on team well-being and
company goals. Streamlined communication and deployment processes, boosting
overall efficiency.
* Stakeholder Management & Technical Support: Organized and led stakeholder
meetings and provided hands-on support across Kubernetes, GitLab, TimescaleDB,
Postgres, NATS, Vault, Terraform, Packer, Ansible, and other tech.

Senior DevOps Engineer

Syntropy
* Infrastructure Optimization: Stabilized legacy ELK cluster for high availability and
resilience. Resolved Kubernetes storage challenges and implemented HA solutions.
* Automation & Streamlining: Automated cloud management and node
bootstrapping with Ansible and Terraform. Implemented GitLab pipelines for
optimized infrastructure management and deployment.
* Security Enhancement: Secured existing infrastructure based on security best
practices, safeguarding against vulnerabilities and threats.
* Tech Stack Management: Managed diverse technologies including Kubernetes,
Elasticsearch, Prometheus, Grafana, Opsgenie, GitLab, Terraform, Ansible, Nomad,
TimescaleDB, Postgres, and multiple cloud platforms (AWS, Azure, GCP, Hetzner,
OCI, Vultr, DigitalOcean and 100+ others clouds and hosting providers).




* Technical Expertise: Demonstrated proficiency in systems, networking,
troubleshooting, VPN, load balancing, security, and incident management for robust
performance and reliability.
* Cloud Automation Excellence: Automated VM and bare-metal server bootstrapping
across 100+ clouds and hosting providers, enhancing deployment efficiency and
scalability.

Senior DevOps Engineer

CUJO AI, Pharma4u GmbH, Danske Bank
Led key DevOps and infrastructure initiatives for multiple organizations, focusing on cloud
migration, automation, and system optimization:

DevOps Lead

Tesonet
* Containerization and Cloud Migration: Led dockerization and migration of
Python/PHP apps to highly scalable 200+ node Kubernetes clusters on multiple
clouds.
* Infrastructure Overhaul: Implemented robust security, high-availability,
auto-recovery, backups, and cost optimizations to elevate existing infrastructure
reliability and efficiency.
* Resource and Team Management: Optimized cloud resources across Hetzner and
AWS. Headed and mentored a 3-member DevOps team for major projects.
* Kubernetes and Database Specialization: Managed advanced HA Kubernetes
setups with Istio and Rancher. Optimized Couchbase, RabbitMQ, Redis, MongoDB
for high availability, sharding, and performance.
* Automation, Monitoring, and Documentation: Deployed Ansible, GitLab for CI/CD
automation, and Nagios, Graylog for monitoring/logging. Created detailed procedure
documentation for streamlined operations.
* MySQL high availability implementation : Implemented MySQL replication and
high-availability solution.
* Performance troubleshooting : Skilled in identifying and resolving complex
performance issues, maintaining high system reliability.

Senior Linux System Engineer

Delivery Hero
* Systems Updates and Automation: Designed and automated package updates
using Python/Confluence. Utilized Chef, SaltStack, and scripting (Bash, Python) for
automating daily tasks, custom backup solutions, and infrastructure
setup/configuration management. Developed custom Nagios plugins.
* Cloud, Database, and Server Administration: Managed VMs (Ubuntu, CentOS,
VyOS), databases (Postgres, MySQL), mail servers (Postfix, Amavis), web servers
(Apache, Nginx, Uwsgi) across ProfitBricks, Hetzner, AWS. Administered database
setup, replication, maintenance, and optimal performance.
* Infrastructure Monitoring Migration: Led migration from Icinga to Icinga2 for
improved monitoring capabilities and system reliability.
* Robust Monitoring and High Availability: Deployed Icinga/Nagios, Munin, Splunk
for comprehensive monitoring. Administered RabbitMQ, GlusterFS, Memcached,
Redis for high availability and caching.




* System Security, On-Call and Troubleshooting: Configured network security with
IPTables, Vyatta. Skilled in troubleshooting, debugging performance issues, and
maintaining system stability. Provided on-call support and incident resolution.

Certificates

Brain Based Coaching

NeuroLeadership Institute

2023

AWS Solutions Architect Associate

AWS

2020


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