Freelancer profile translated to English.
Back to original languageAbout Adrián
Linux & AWS Administrator | Stabilization and Optimization of Production Infrastructure
I work with small and medium-sized businesses that already have their infrastructure in production and need real stability.
I intervene when:
• The website starts to fail or run slow
• AWS starts to become more expensive without a clear explanation
• There is no documentation or order
• There is no dedicated sysadmin
• It is necessary to comply with GDPR or separate services correctly
In recent months I have worked on:
• Migration of databases to Amazon RDS in a private subnet
• AWS cost optimization (elimination of orphaned resources and architecture review)
• Hardening of Linux servers in production
• Review and stabilization of WordPress and e-commerce
• Implementation of environments with private subnets and access control
My approach:
✔ Clear and maintainable architectures
✔ Practical applied security
✔ Costs under control
✔ Technical explanation understandable for business
I work with defined scopes and verifiable improvements.
I do not improvise or apply generic solutions.
Spanish
Native or bilingual
English
Basic
Remote only
Primarily works remotely
Experience
- AutónomoLinux System AdministratorMay 2025 - Today (1 year and 3 months)Administration of Linux servers in production. Design and management of secure cloud and on-premise networks. Management of web services, DNS, and VPN. Monitoring, log analysis, incident resolution, and application of hardening measures.
- Sector ForestalMachinery OperatorMay 2015 - February 2023 (7 years and 9 months)Work in critical environments under strict security protocols. High operational responsibility, technical incident resolution, and adaptation to different professional contexts.
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Education
- IBM Cybersecurity AnalystIBM Cybersecurity Analyst
- Google CybersecurityGoogle Cybersecurity
Certifications
- AWS Cloud PractitionerAmazon Web Services2026