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Denys Havrysh
Poltava, Ukraine
Cloud Architect and DevOps engineer. 15 yeas in IT, 9 years in software development, 7 years in DevOps role. Experienced in AWS, Kubernetes, Terraform, Docker, SaltStack, Jenkins, Python, Bash, Debian GNU/Linux. Skilled in Cloud Native Computing, highly available systems, database management, monitoring and performance optimization, CI/CD for Java/Spring Boot and JavaScript applications, release engineering, automation and configuration management, security hardening, advanced Cloud networking.
CodersRank Score
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This represents your current experience. It calculates by analyzing your connected repositories. By measuring your skills by your code, we are creating the ranking, so you can know how good are you comparing to another developers and what you have to improve to be better
Information on how to increase score and ranking details you can find in this blog post.
206.5
CodersRank Rank
Top 4%
Top 50
Groovy
Developer
Ukraine
Top 1
HCL
Developer
Ukraine
Top 10
Shell
Developer
Ukraine
Highest experience points: 0 points,
0 activities in the last year
Shell
54.5
exp.
Python
11.2
exp.
HCL
133.5
exp.
List your work history, including any contracts or internships
Quant Technologies
Oct 2019 - Oct 2021 (2 years)
Cloud Architect
Rolled out applications from legacy systems into scalable and resilient production
environment in Kubernetes on AWS by utilizing VPC, IAM, EC2, ECR, EKS, NLB, Aurora RDS, SES, Route53.
Implemented automation and performance testing infrastructure for entire application stack with IaaC approach.
Leveraged Docker, Terraform, eksctl, Kustomize, Helm/helmfile, NGINX Ingress. Created comprehensive monitoring with Kube Prometheus Stack, centralized logging with ElasticSearch, filebeat, Kibana.
Improved CI/CD pipelines in Jenkins for Java Spring Boot and NodeJS applications, automated deployments of releases and feature branches.
Provisioned and optimized PostgreSQL databases, RabbitMQ, ElasticSearch, optimized and secured data access.
Written detailed documentation and made diagrams.
Did on-boarding for new team members.
environment in Kubernetes on AWS by utilizing VPC, IAM, EC2, ECR, EKS, NLB, Aurora RDS, SES, Route53.
Implemented automation and performance testing infrastructure for entire application stack with IaaC approach.
Leveraged Docker, Terraform, eksctl, Kustomize, Helm/helmfile, NGINX Ingress. Created comprehensive monitoring with Kube Prometheus Stack, centralized logging with ElasticSearch, filebeat, Kibana.
Improved CI/CD pipelines in Jenkins for Java Spring Boot and NodeJS applications, automated deployments of releases and feature branches.
Provisioned and optimized PostgreSQL databases, RabbitMQ, ElasticSearch, optimized and secured data access.
Written detailed documentation and made diagrams.
Did on-boarding for new team members.
Zoomdata
Nov 2015 - Oct 2019 (3 years 11 months)
Senior DevOps Engineer
Managed Big Data clusters (Cloudera, HortonWorks, MapR), various relational
(PostgreSQL, MySQL, MemSQL) and noSQL databases (ElasticSearch, Apache Solr, MongoDB) in AWS.
Created SaltStack Formulas for application stack and middleware (OpenJDK, Hashicorp Consul, RabbitMQ) deployment.
Developed automation tools for managing AWS resources with Python: Boto3, Flask, requests, Hashicorp Packer, cloud-init.
Implemented elastic provisioning of development and testing infrastructure based on EC2 Spot Fleet Requests with Terraform and Slack bot (Errbot).
Coded build/test/packaging/deploy/release with Jenkins Declarative Pipeline and Groovy.
Cut AWS costs spending more than in a half.
Contributed to various Open Source projects in area of DevOps tooling and infrastructure management, including but not limited to: SaltStack, StackStorm.
(PostgreSQL, MySQL, MemSQL) and noSQL databases (ElasticSearch, Apache Solr, MongoDB) in AWS.
Created SaltStack Formulas for application stack and middleware (OpenJDK, Hashicorp Consul, RabbitMQ) deployment.
Developed automation tools for managing AWS resources with Python: Boto3, Flask, requests, Hashicorp Packer, cloud-init.
Implemented elastic provisioning of development and testing infrastructure based on EC2 Spot Fleet Requests with Terraform and Slack bot (Errbot).
Coded build/test/packaging/deploy/release with Jenkins Declarative Pipeline and Groovy.
Cut AWS costs spending more than in a half.
Contributed to various Open Source projects in area of DevOps tooling and infrastructure management, including but not limited to: SaltStack, StackStorm.
Netvertise
Oct 2014 - Nov 2015 (1 year 1 month)
DevOps Engineer
Provisioned web infrastructure with SaltStack: Linux, iptables, Apache httpd, NGINX,
HAproxy, PHP-FPM, Memcached, MySQL, Percona, DNS, Exim mail, TLS.
Set up monitoring and logs collection using Graylog2.
Maintained monitoring tools: M/monit, Nagios. Automated various daily tasks with Python.
Integrated Varnish cache for high-traffic websites.
Utilized Docker (docker-compose) for local development and testing.
HAproxy, PHP-FPM, Memcached, MySQL, Percona, DNS, Exim mail, TLS.
Set up monitoring and logs collection using Graylog2.
Maintained monitoring tools: M/monit, Nagios. Automated various daily tasks with Python.
Integrated Varnish cache for high-traffic websites.
Utilized Docker (docker-compose) for local development and testing.