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Ubuntu developers
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Serhii V.
Rivne, Ukraine
Servers administration, security hardening, malware cleanup, prevention of hackers intrusion, DevOps, DNS, email, web hosting setup, migration, troubleshooting, recovering, monitoring, automation, scripting, supporting, writing documentation.
5+ years on Upwork, individual freelancer. I offer reasonable services in areas:
Security:
• malware cleanup, websites recovery;
• penetration testing;
• security hardening for servers and websites;
Web hosting:
• websites migration and web hosting setup;
• hosting optimizing for speed and security, troubleshooting;
• DNS configuration and troubleshooting, Cloudflare automation;
• setup and support hosting panels (Plesk, cPanel/WHM, HestiaCP, DirectAdmin etc);
• deploy and support various CMS (WordPress, Drupal, Typo3 etc);
• cloud hosing (VPS) setup and automation (DigitalOcean, Linode, Hetzner, Vultr etc);
DevOps and Clouds:
• automation scripting with Bash, PowerShell;
• clouds service and infrastructure setup (GCP, AWS, Azure);
• virtualization (Proxmox VE, Hyper-V, XEN);
• Docker, Podman;
• Kubernetes;
• CI/CD pipelines.
IT infrastructure administration tasks:
• monitoring and maintain of servers and infrastructures;
• DNS configuration, mail servers;
• mesh networks (Netmaker, Zerotier etc), Wireguard, VPN (IPSec);
• servers and workstations administration (Windows, macOS, Linux);
Systems and services troubleshooting, data recovery:
• OS restoring and boot recovery;
• recovering of data, file systems and RAID;
• software and systems troubleshooting.
- Ubuntu
- DNS
- Virtual Private Server
- Linux System Administration
- Proxmox VE
- Cloudflare
- Web Hosting
- Website Security
- Scripting
- Web Server
- Data Recovery
- Disaster Recovery
- Debian
Aleksandr K.
Novi Sad, Serbia
Linux server installation and configuration.
Virtualization systems: VMware, Proxmox.
Cloud providers: AWS, GCloud, DigitalOcean.
IaC (Terraform, Pulumi)
Web server, web proxy configuration (Apache, Nginx, Traefik, Caddy, HAproxy).
Monitoring servers, apps and network devices with Zabbix and Prometheus.
Logging with Promtail+Loki, tracing with Tempo
Grafana
Containers: building and deploying Docker containers and services via docker compose.
Container orchestration: Kubernetes. Writing Helm charts. GitOps with ArgoCD.
CI/CD: GitlabCI, Jenkins, Ansible.
Python and Go scripting
- Google Cloud Platform
- Asterisk
- Grafana
- Linux System Administration
- Windows Administration
- Zabbix
- DevOps
- Kubernetes
- Git
- Prometheus
- CI/CD
- Mac OS X Administration
Mitchell S.
Auckland, New Zealand
"At TechSquid, our job isn't complete, until yours is!"
TechSquid is a new IT startup company, based in Auckland, New Zealand.
TechSquid serves small to medium sized businesses across a wide array of common Technical issues, including:
* Automation across PHP, Python, Javascript, VBA etc.
* CRM Implementation and Customisation
* O365 Implementation and Administration
* Excel / Access Training
* Customised Programming and Development
* Data Visualisation
We are just generally awesome when we get to use:
* API’s
* JSON/XML
* REST Services
* Curl
* SSH
* FTP/SFTP
We have extensive experience across the following systems:
* Woocommerce
* Wordpress (Including BuddyBoss, BuddyPress, Memberpress, Paid Memberships Pro, Etc.)
* All Microsoft Office Packages (E.g Excel, Access, Word etc)
* Shopify
* Zoho
* Amazon Web Services
* Bigcommerce
* ERPNext
Our main programming languages include:
* JavaScript/JQuery
* Python
* PHP
* VBA
* HTML/CSS
Drop us a line
- Ubuntu
- API
- Python
- PHP
- JavaScript
- Shopify
- Odoo
- Office 365
- ERPNext
- JSON
- Salesforce
- API Integration
- Visual Basic for Applications
Qian J.
Shenzhen, China
Highly experienced and skilled in linux system, linux kernel and linux system programming. I had served in NXP semiconductor for 7 years, and worked in linux field for more than 15 years.
Linux Kernel
- Subsystem: KVM Virtualization, Filesystem, Network, USB, Linux Video
- Debugging: Performance, System Analysis, Software Debugging, OOPS
Embedded Linux
- Frameworks: OpenWRT, Yocto, Android
- Device Driver: USB, XHCI, WIFI, LTE, Network, Camera
Linux System Development
- System: Ubuntu, Centos, Archlinux, Raspberry pi, Orange pi
- Network: VPN, VXLAN, IPTABLE, Router, Wireguard
- Virtualization: Qemu, Libvirt, Virtualbox, Docker, K8s
Programming Skills
- C/C++
- Bash/Makefile
- Android
- Python
- Ubuntu
- C
- Embedded Linux
- Embedded C
- Linux
- Kernel
- Kernel-based Virtual Machine
- Cloud Computing
- Troubleshooting
- Performance Optimization
- System Programming
- Linux System Administration
- Network Engineering
- Golang
- Private Cloud
Phan Q.
Ho Chi Minh City, Vietnam
Experience in C/C++/C# Application:
- 9+ years developing Desktop Applications/Embedded Software on Linux distributions.
- Proficient in C/C++/Qt, problem solving skill, logical thinking.
- Experience in Blockchain development.
- Experience in Software Update.
- Experience in developing IP camera and streaming solutions on Linux platform.
- Experience in developing IoT for watch-over system on uT-Kernel platform.
- Experience in developing Back End sever.
- Experience with code refactoring techniques.
- Experience with some security techniques.
Experience in embedded domain:
- 3+ years experiences on embedded systems(Bare-metal/RTOS) with ARM controllers from NXP like S32k, Nxp Kinetis M0/M4 microcontroller.
- Experiences with different peripherals like DMA, SPI, I2C, GPIO, Clock, PWM, Input Capture,..
- Experiences with high-optimized code development for security ciphers on S32k, NXP Kinestis M0/M4.
- Experiences with development of Autosar MCAL modules.
- Experiences with development of bus like CAN, LIN, Flexray, Ethernet.
Quickly adapt with new technology.
- Ubuntu
- C
- Qt Framework
- Embedded System
- Linux
- Golang
- Embedded C
- Java
- C++
- Blockchain
Greg G.
Aurora, United States
I specialize in infrastructure using terraform on aws and proxmox as well as kubernetes via flux in IaS environments.
I have 21 years of general linux experience with apache, php, bash, python and various other scripting/programming languages.
I have 7 years of expert level experience using memcache/redis and nginx application accelerator proxies based on Redhat and Ubuntu with php-fpm, apache, nodejs, java, .net and other application servers. These include zend, wordpress, drupal and several other web software suites.
In one of my previous projects I was been able to allow for up to 40,000 simultaneous user sessions across twenty apache application servers utilizing nginx reverse proxies, behind several F5 load balancers. Initial hardware was able to accommodate up to 4,000 users. Since the application was not stateless nor was it designed for data segregation between private/public data the nginx rulesets were very complex requiring rewrites, header injections/strips and even body regex find/replaces.
I also have expert level experience with large scale wordpress clusters from the file service and db aspects.
I have experience with appdynamics, nagios and large scale ELK logging.
I have experience with AWS, especially linux EC2 containers, elastic beanstalk and cloudformation.
I am highly skilled in troubleshooting complex multi-tier interaction issues using system logs, stack traces and wireshark packet traces.
- Ubuntu
- PHP
- NGINX
- Redis
- Apache CouchDB
- Apache Nutch
- Memcached
- Linux System Administration
- Red Hat Administration
- PfSense
- HAProxy
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