Dmitriy is available for hire
Hire DmitriyDmitriy Kononov
Verified Expert in Engineering
Cloud Services Developer
Bishkek, Kyrgyzstan
Toptal member since May 31, 2018
Bio
Dmitriy is a software developer and an enthusiastic promoter of useful DevOps practices and tools including CI/CD, infrastructure management bots, Terraform, Kubernetes, and more. He is focused on infrastructure cost reduction and high-volume instance management, and he has delivered on his commitments on time for every project he's worked on, from simple automation tasks to complex Go-based projects.
Portfolio
Meta® Data Systems (via Toptal)
Ruby on Rails (RoR), Ruby, Amazon Web Services (AWS)
SAF Platform (via Toptal)
Node.js, ECS
Iron.io
HashiCorp, Prometheus, Ansible, Triton Compute, Rackspace, Cloud Platforms...
Experience
Availability
Part-time
Preferred Environment
JetBrains, Bash, Git, MacOS
The most amazing...
...thing I've created was an awesome chatbot called Bender, based on Hubot, which makes any operation in a Slack channel interactive.
Work Experience
Freelance DevOps Engineer
2018 - 2018
Meta® Data Systems (via Toptal)
- Created a Lambda function to push video files from S3 to MediaConvert with a specific profile.
- Built a proof of concept (POC) with Ruby On Rails; the web app allows the user to (directly) upload a video file to S3 (with using multipart uploading) or select an uploaded video file from the bucket, upload subtitles, poster, input audio streams and other fields, and then push the job to MediaConvert. When the job is finished MediaConvert will notify the web app by triggering a webhook. Then the web app enables the user to play the processed video file and select a protocol (HLS, DASH), audio stream, or subtitle.
Technologies: Ruby on Rails (RoR), Ruby, Amazon Web Services (AWS)
Freelance DevOps Engineer
2018 - 2018
SAF Platform (via Toptal)
- Migrated the entire infrastructure from Elastic Beanstalk to ECS and handled the cleanup.
- Configured CircleCI for a CI pipeline for separated environments.
- Built production Docker images for ECS.
- Created an awesome chatbot for deploying services, executing tasks, and creating an isolated environment from a specified GitHub branch.
Technologies: Node.js, ECS
DevOps
2015 - 2018
Iron.io
- Built a nice continuous integration platform using AWS ECS, GitHub, and CircleCI.
- Developed an awesome chatbot for operations, based on Hubot, that connects with Slack; used Node.js and Golang.
- Implemented several cost reductions for the infrastructure which reduced the infrastructure cost by 50%.
- Created an on-premise solution for all Iron.io's services using Terraform and AWS services.
- Used a chatbot and automated scripts to improve the workflow for the DevOps and support team.
Technologies: HashiCorp, Prometheus, Ansible, Triton Compute, Rackspace, Cloud Platforms, Amazon Web Services (AWS)
Web Developer
2014 - 2015
Iron.io
- Created and supported client libraries for the Iron.io's services; used Java, Node.js, and PHP.
- Implemented some nice features for the user interface using RoR and CoffeeScript.
- Developed an integration with the Azure marketplace using RoR, CoffeeScript, and Nginx as a proxy for validating a certificate.
Technologies: CoffeeScript, PHP, Python, Node.js, Java, Ruby on Rails (RoR)
Freelance Mobile/Web Developer
2013 - 2014
Freelance Work
- Developed an Android application for a local market (Bereket-automation) using 1c as the back-end API; built up front-end using RoR and LeafletJS for the front-end and GeoServer and PostGIS for the back-end.
- Created and supported a web application for agriculture monitoring; used RoR and Highcharts.
- Built a cartographical web application; developed the front-end (RoR and LeafletJS) and the back-end (GeoServer and PostGIS) for user layers.
- Implemented Mapnik, for the cartographical web app, in order to generate a base layer and Mominatim for data searches.
Technologies: Nominatim, Leaflet, PostGIS, GeoServer, Android, MySQL, Ruby on Rails (RoR)
Developer
2012 - 2013
Oymo Studio
- Created a web application with an API for taxi services; used RoR as the server and Android application as the client for the driver and customer.
- Built an AR mobile app for Android using the Vuforia platform and 3ds Max models.
- Developed an online debate web application for the election of deputies using RoR, Wowza, FFmpeg, and JavaScript.
- Divided the server into several virtual machines using Gemu for several projects.
Technologies: Flash, Android, Ruby on Rails (RoR)
Mobile/Web Developer
2012 - 2012
AlcoDev
- Developed a few plugins for Chrome, Firefox, and Safari for the Dolphin framework.
- Supported and fixed several Android and iOS application.
Technologies: JavaScript, iOS, Android
Operations Manager
2011 - 2012
Onlinetv.kg
- Created the initial infrastructure for the whole service.
Technologies: Unicast
Quality Assurance Engineer
2011 - 2012
InfoDesk
- Contributed to the social network engine for a Chinese market project as a quality assurance team member by creating automated tests for a web application.
- Wrote automated QA tests for the "voter list" desktop application; dealt with the president election of Kyrgyz republic.
Technologies: Automated Testing, Selenium
Experience
Awesome Broadcasting Service
Work Done:
• Built one of the best online broadcasting services for the country that I live in. The service uses Unicast and Multicast broadcasting.
• Worked as the back-end developer and infrastructure engineer.
• Created a monitoring system for the entire project based on Graphite and Grafana and an alert system.
• Developed an Android application for mobile phones and TV.
• Built one of the best online broadcasting services for the country that I live in. The service uses Unicast and Multicast broadcasting.
• Worked as the back-end developer and infrastructure engineer.
• Created a monitoring system for the entire project based on Graphite and Grafana and an alert system.
• Developed an Android application for mobile phones and TV.
DevOps at Iron.io
Work Done:
• Built the awesome infrastructure for Iron.io's services.
• Implemented several cost reductions for the entire infrastructure—reducing costs by 50%.
• Managed 150 instances at that service.
• Built Docker containers for critical services and built a continuous integration based on GitHub, CircleCI, and AWS ECS.
• Developed an awesome chatbot which can do almost everything for Iron.io's services.
• Built an on-premise solution for the Iron.io's services based on Terraform and AWS services.
• Wrote automated scripts used by the chatbot to make the lives of the DevOps and other teams easier.
• Built the awesome infrastructure for Iron.io's services.
• Implemented several cost reductions for the entire infrastructure—reducing costs by 50%.
• Managed 150 instances at that service.
• Built Docker containers for critical services and built a continuous integration based on GitHub, CircleCI, and AWS ECS.
• Developed an awesome chatbot which can do almost everything for Iron.io's services.
• Built an on-premise solution for the Iron.io's services based on Terraform and AWS services.
• Wrote automated scripts used by the chatbot to make the lives of the DevOps and other teams easier.
Cartographic Service
Work Done:
• Created a nice cartographic service for the city I live in.
• Built the front-end (Ruby on Rails and LeafletJS) along with the plugins.
• Implemented Mapnik as the rendering base layer for the map.
• Used GeoServer to render the user's layers stored in PostGIS.
• Installed Nominatim which enabled the user to search for addresses on the map.
• Created a nice cartographic service for the city I live in.
• Built the front-end (Ruby on Rails and LeafletJS) along with the plugins.
• Implemented Mapnik as the rendering base layer for the map.
• Used GeoServer to render the user's layers stored in PostGIS.
• Installed Nominatim which enabled the user to search for addresses on the map.
Education
2006 - 2011
Master's Degree in Computer Science
Kyrgyz Technical University - Bishkek, Kyrgyzstan
Skills
Libraries/APIs
Node.js, FFmpeg, Leaflet
Tools
Jira, Docker Hub, GitHub, Git, Helm, Jenkins, Docker Compose, Ansible, JetBrains, Flash, Unicast, HashiCorp, Chef
Languages
JavaScript, Bash, Ruby, Go, PHP 5, Java 8, Java, PHP, CoffeeScript, Python
Frameworks
Ruby on Rails (RoR), Angular, Selenium, Spring Boot, Laravel
Paradigms
Continuous Integration (CI), Continuous Deployment, DevOps, Test-driven Development (TDD), Agile, Automated Testing
Platforms
Android, Amazon Web Services (AWS), CoreOS, Ubuntu, Docker, Kubernetes, Android TV, CentOS, Rackspace Cloud, JavaFX, MacOS, iOS, Rackspace, Triton Compute
Storage
Google Cloud, MySQL, Azure Cloud Services, GeoServer, PostGIS, PostgreSQL, MongoDB
Other
Broadcast Design, Cloud Services, Ruby Gems, Nominatim, Cloud Platforms, Prometheus, ECS
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