Algirdas Šimkus
I'm Designer
About
Freelancer, Linux Site Reliability Engineer.
With over 15 years of experience as a Senior Linux Engineer, I specialize in architecting resilient IT infrastructures that ensure high availability and performance. Focused on automation and efficiency, I have successfully enhanced system reliability and scalability through collaborative efforts and a commitment to continuous improvement. My expertise includes coding skills, dynamic routing, infrastructure design, and a deep understanding of Linux environments, which enables me to manage changes and maintain security in complex systems. Leveraging automation tools like Ansible and my Red Hat certifications, I develop proactive strategies to safeguard infrastructure and fortify service delivery. I have a strong background in planning, installation, migration, troubleshooting, security, backup and disaster recovery, monitoring, and performance tuning of Red Hat-based distributions. Proficient in PHP, Python, Bash scripting and Ansible automation, I possess extensive expertise in web infrastructure administration, including KVM, PowerDNS, Pacemaker, Varnish, Nginx, PHP-FPM, MySQL, RabbitMQ, Redis/Keydb, Docker/Podman, CEPH...
- Experience: 15 years +
- Email: [email protected]
- Phone: +370 622 13163
- City: Vilnius, Lithuania
- Age: 36
- Degree: Informatics Bachelor
- Freelance: Available
- Full time: Japan, Tokyo only (available for relocation)
I am currently available for part-time freelance opportunities. If you require expertise in Linux engineering, system automation, or web infrastructure administration, I am eager to contribute my skills and experience to your projects. Please feel free to reach out for further discussion.
Resume
Professional Experience
Senior Linux Engineer, SRE
January 2014 · Present
Telia Lietuva
- Design and build IT infrastructures (web services) for customers and internal systems.
- Ensure high availability and fault tolerance of systems, making sites reliable,efficient, and scalable.
- Manage availability, latency, performance, efficiency.
- Change management, monitoring, maintainability, emergency response, capacity planning, and automatic provisioning of environments.
- Cyber security.
- Design networks, including knowledge of BGP, OSPF, VXLANs, and VPN services.
- Develop tools to streamline tasks, utilizing PHP, Python, Perl, and other programming languages.
- Coach and consult colleagues on technologies used
Linux/FreeBSD Systems Engineer, Network engineer
March 2009 · December 2013
JSC NEXTCOM
- Linux/FreeBSD Servers Administrator.
- DC and Core Network Setup and Configuration for 4k+ users.
- Troubleshooting Connectivity Issues.
- Assisting with Network Access.
Certification
Red Hat Certified Specialist in Security: Linux
Issued Jan 2023 · Expires Nov 2027
Credential ID: 150-204-683
Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting
Issued Jan 2023 · Expires Jan 2026
Credential ID: 150-204-683
Red Hat Certified System Administrator
Issued Nov 2015 · Expires Nov 2027
Credential ID: 150-204-683
Red Hat Certified Specialist in Ansible Automation
Issued Feb 2020 · Expired Feb 2023
Credential ID: 150-204-683
Sumary
Algirdas Šimkus
Innovative and deadline-driven Site Reliability Engineer with over 15 years of experience in infrastructure engineering.
- Vilnius, Lithuania
- +370 622 13163
- [email protected]
Education
Bachelor of Informatics
2007 · 2012
Vilnius University, Vilnius, Lithuania
Thesis title: "Cloud computing – data storage as service"
Training
Advanced Architecting on AWS
Security Engineering on AWS
AWS Cloud Practitioner Essentials
AWS Technical Essentials
Languages
Lithuanian - Primary fluency (native)
English - Full professional proficiency
Japanese - Elementary proficiency (learning)
Personal profile
Experienced Linux Engineer with a strong focus on system optimization and automation, complemented by a deep interest in cybersecurity. With a solid track record of participating in high-profile events like Locked Shields, I bring a creative and analytical approach to both my primary role and my cybersecurity endeavors. I am a quick learner who is passionate about continuously learning new technologies and expanding my knowledge base. My expertise includes developing custom Ansible modules in Python and engaging in smart home automation projects. I thrive in fast-paced environments, leveraging my quick thinking and articulate communication skills to deliver effective solutions and drive continuous improvement.
Contact
Feel free to reach out for any inquiries or collaborations. I am willing to accept full-time offers only in Tokyo, Japan.
Technology stack
- All
- Code
- DB
- OS
- WEB
- Other
