10/12/2025 updated

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Senior SRE Engineer with Cloud and Kubernetes Expertise

Madrid, Spain
Worldwide
Master's in Telecommunications Engineering
Madrid, Spain
Worldwide
Master's in Telecommunications Engineering

Profile attachments

CV-GuillermoLopez.pdf

Java (Programming Language).NET FrameworkAmazon Web ServicesMicrosoft AzureBig DataC Sharp (Programming Language)Cloud ComputingDatabasesElasticsearchApache HadoopPython (Programming Language)PostgreSQLMySQLNagiosOracle ApplicationsPaessler Router Traffic GrapherAnsibleSQLiteDatadogGoogle CloudSystem AvailabilityApache SparkCloudformationKubernetesElastic KibanaTerraformSplunkApache BeamDatabase AdministrationProgramming LanguagesMicroservices
Cloud Infrastructure
Expertise in multiple cloud platforms including AWS, Google Cloud, and Azure with professional certifications in Google Cloud Data Engineering.

Kubernetes & Container Orchestration
Advanced knowledge in Kubernetes, Helm, and Nomad for container orchestration and microservices architecture.

Site Reliability Engineering
Specialized in ensuring 24/7 system availability, implementing SLI frameworks, and automating infrastructure for high-security environments.

Infrastructure as Code
Proficiency with Terraform, Ansible, AWS CloudFormation, and Chef for automated infrastructure provisioning and management.

Programming Languages
Advanced skills in Python, Java, and Android development with working knowledge of C#, .NET, and C.

Monitoring & Observability
Experience with comprehensive monitoring solutions including Datadog, Kibana, Nagios, PRTG, Opsview, and Groundwork.

Database Management
Competence in various database technologies including MySQL, Postgres, SQLite, Oracle, and Alchemy.

Big Data Technologies
Knowledge of Elastic Stack, Splunk, Hadoop/Spark, and Apache Beam for data processing and analytics.

Experience

Professional experience10+ years
Freelancer since2019

Languages

EnglishFluentSpanishNative speaker

Project history

Kubernetes Migration

Kenjo
Migrated all infrastructure from AWS Beanstalk environments to Elastic Kubernetes Services to increase developer speed, productivity and optimize costs. 5 development environments and production migrated, integrated with MongoDB Atlas and Datadog.

Attendance ETL

Kurzgesagt in a nutshell
Synchronized employee attendance entries between systems using a custom data pipeline written in Python and executed on Google Firebase platform.

Senior SRE Engineer

Okta - Auth0
Ensuring availability and reliability of highly secure authentication systems. Automating computing power management for 24/7 availability while reducing costs. Participating in SLI framework definition and improving platform observability.

Tech Lead

Euroma
Developed and hosted a custom DDNS service to provide remote access to CCTV equipment for thousands of customers. Created an admin webpage in Ruby and hosted in Kubernetes.

Website creation and hosting

Tizzup
Designed, developed and hosted a website providing a marketplace for connecting short rental tenants and owners. Developed in Python with Django framework and hosted in Kubernetes.

Senior SRE Engineer

Eventbrite
Ensured 24/7 availability of all ticketing lifecycle systems. Led the separation of a monolithic application into discrete microservices running in separate environments.

Google Cloud Developer

BBVA
Created a Business Intelligence control dashboard for automated finance processes hosted entirely in Google Cloud Platform, communicating with critical infrastructure through secured APIs.

CI engineer

Ericsson - Altran
Created and maintained CI infrastructure for Ericsson Network Functions. Designed and deployed CI/CD 5G infrastructure.

Cloud Developer

Next Limit
Development of automatic deployment, monitoring and use of cloud infrastructure. Container technologies and application development.

3D Developer

Next Limit
Developed a website for high-end 3D rendering technologies. Created an application for job scheduling and rendering jobs in multiple parallel jobs on cloud computers.

Test Developer and Administrator

Catrian
Designed, implemented and supported automated tests running 24/7 checking availability, performance and user experience of end-user clients. Alert management and SLI framework implementation.

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