Roman Mishchenko
Private message 
Offer work 
Dnepr,
Ukraine
a little busy
Rating
Language proficiency level
Українська: fluent
Polski: intermediate
English: pre-intermediate
CV
Hello,
I have extensive experience with various technologies and tools, which enables me to successfully implement diverse projects. Here is a brief description of my skills and experience:
Tools and Technologies:
- Containerization and Orchestration: Docker, docker-compose, Kubernetes (K8S), ingress control setup, load balancer.
- CI/CD and Automation: Jenkins, GitLab CI/CD, GitHub Actions, Ansible, Terraform.
- Server Configuration: Web servers (Nginx, Apache, Tomcat), proxy servers (Nginx, Traefik).
- Security Systems: IDS systems (Snort, Fail2Ban), VPN setup with MikroTik, creating SSL certificates, automating certificate renewals, securing connections with a custom OpenVPN server.
- Databases: PostgreSQL, SQL, MariaDB, MongoDB, Redis.
- Monitoring: Prometheus, Loki, Grafana, Uptime.
- Cloud Platforms: AWS, GCP, Azure, Digital Ocean, Hetzner.
Work Experience:
- Containerizing applications and breaking down monolithic applications into microservices.
- Setting up and maintaining monitoring and logging systems.
- Implementing and supporting cryptocurrency exchanges, coffee service applications, and CRM systems for developers.
- Configuration management for MikroTik using Ansible.
- Setting up OpenVPN servers, both with and without a web interface.
- Building and securing virtual networks.
- Installing and configuring Vault.
I have had a negative experience with Bitbucket in the past, but I believe this could change over time.
Projects:
- Implementation of cryptocurrency exchanges.
- Development and support of coffee service applications.
- Implementation of CRM systems for developers.
- Network device configuration management (MikroTik) using Ansible.
- Setting up and maintaining OpenVPN servers.
- Creating and configuring monitoring and logging systems.
Thank you for considering my candidacy. I look forward to further cooperation and new orders! If you have any questions or needs, please do not hesitate to contact me.
Looking forward to new challenges and opportunities!
Skills and abilities
Administration
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DevOps
from 14 USD for hour
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Linux & Unix
from 9 USD for hour
- Software & Server Configuration
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System & Network Administration
from 9 USD for hour
- Windows
Outsourcing & consulting
Writing
Portfolio
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135 USD CI/CD Github Action + Node.js + MongoDB + Docker+ docker-compose
DevOps
Recovering working nginx adding services through proxy using Cloudflare
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180 USD DevOps Some work docker+mysql+nginx+Certbot+Jenkins+Bash scrp
DevOps
Everything is described in the screen itself, with the exception that then it was necessary to set up a certbot for this project!
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11 USD Construct VLAN with two methods on Cisco Packet Tracer
System & Network Administration
App to set up VLAN networks by ordinary method and with VTP/protocol
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18 USD Docker and Docker-compose
DevOpsAutomated collection of add-ons on Java + NGINX + MOCK server build on Docker and Docker-compose
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60 USD The CD Gitlab
DevOps
It was necessary to set the services by automatically gathered, billed, downloaded in the Register and Kubernetis then by taking from the odti imayji and scattered, or by making changes to the innsnuck
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Docker and Docker compose
DevOps
Examples of creating #containers in #docker and using #docker-compose
Reviews and compliments on completed projects 27
6 April 2025
23 USD
DevOps
The novel dealt with the task and completed everything within the agreed deadlines. Thank you for the cooperation.
30 March 2025
34 USD
GitLab
Roman is a true professional! He quickly and efficiently solved my problem with linking the domain to GitLab, while explaining all the details. The work was done perfectly, without unnecessary words or delays.
As a DevOps, he is very responsible, detail-oriented, and ready to help with training. I definitely recommend his services to other employers! Thank you, Roman, for the great work!
Sincerely, Mykyta
30 March 2025
16 USD
DevOps consultation
Answered all questions and helped with the architectural solution.
3 March 2025
19 USD
DevOps consultation on server architecture
Deep knowledge of the server side, a professional approach, and the ability to explain complex things clearly. The consultation was extremely informative, I received many useful solutions for my project. I recommend!
21 January 2025
90 USD
VPN
Very qualified work
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4 January 2025
158 USD
Server infrastructure setup and optimization
Thank you to Roman for the quality and prompt work, which significantly improved the state of the server infrastructure and enhanced its security. I would like to particularly highlight the good communication throughout the entire work period and the responsible attitude towards the final result. Roman not only completed the assigned tasks but also paid attention to details and took into account the specifics of the project. The collaboration was pleasant and productive, and I will be happy to reach out in the future for similar tasks!
10 September 2024
28 USD
Creating instructions for the docker file
Done quickly and just as it should be.
4 July 2024
41 USD
Configure connection MetaBase->MySQL database + updates x4
Once again, fast implementation and immediate and smooth contact
3 July 2024
151 USD
Configuration web-server
Everything is done perfectly, thank you very much for the work.
28 June 2024
129 USD
Technical support for compoter maintenance
alles super !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
10 June 2024
28 USD
Install and configure Mattermost + Focalboard on Hetzner
Once again, thank you for the smooth cooperation, communication, and independence of Mr. Roman. I recommend.
8 June 2024
54 USD
Raise Load Balancer (based on nginx)
All good, everything is set up as needed. Deadlines are met. Thank you for the work.
28 May 2024
28 USD
Install and configure Web UI - Open VPN
Another order without any communication and implementation problems. In the end, when I asked for a hint on where to find the configuration options, Mr. Roman laid it out for me on a silver platter 🙂 thank you!
27 May 2024
124 USD
Setting up Open-Source systems - Coolify and through it, subsequent
Very good cooperation with Mr. Roman. He started quickly, great in communication in Polish. Before starting, he asked about details and noticed an error in my reasoning, thanks to which I could act correctly. I recommend!
26 April 2024
571 USD
Security of the server
all good. will contact you again if needed.
17 April 2024
68 USD
Devops
The task is completed with high quality and on time. Thank you!
30 March 2024
68 USD
Settings of the server
Everything is great, thank you, will contact you again!
| Personal | Response review
22 March 2024
45 USD
Protection on the server by IP
A great executive. We are going to contact and work further, thank you!
20 March 2024
45 USD
Start the TG bot on the server + set the CI/CD from the GitHub
Excellent communication. A very responsible executive! I recommend and will contact you further.
13 February 2024
135 USD
DevOps pack the project in Docker for the aut. Displays on the server
A professional and talented developer who works well with his work. He has profound knowledge of programming and always finds effective solutions for all the tasks he has to face.
Thanks to its professionalism, it always achieves high results in solving the challenges that arise during the development process.
I would recommend for any CI-CD project.
1 February 2024
116 USD
Create Docker Services with DockerCompose
He worked in advance! Everything is great!
2 January 2024
34 USD
The Cisco Pocket Tracker
Very responsible to the projects, I recommend as the best freelancer!
25 December 2023
23 USD
The Cisco Package Tracker
The professional in his case, quickly completed the task. I recommend successful orders!
21 December 2023
23 USD
Consulting on the development, placement, development of the application!
It’s all super, fast and clear! Thank you for the consultation!
21 December 2023
116 USD
Technical assistance of the construction company.
Everything is done in time, I recommend cooperation!
17 October 2023
11 USD
Mistake of selenium
The task is done, thank you.
21 December 2014
0 USD
The 1st LR. Program in C++ or C#.
I am very pleased with the work of Roman. Excellent performance, only 5+!!!The !
Obtained exactly the result that was needed, with all the nuances and details, the work was done quickly professionally and quality, a very responsible programmer! I am pleased to collaborate and will be happy to continue to use the services of Roman.
