Freelancer profile translated to English.
Back to original languageAbout Alejandro
I am a Cloud Architect with over 5 years of experience designing and implementing solutions on AWS and Azure for demanding environments such as banking and the financial sector.
My specialty is serverless architecture (Lambda, API Gateway, EventBridge) combined with Infrastructure as Code (Terraform) and FinOps practices to optimize cloud costs without sacrificing performance or security.
Some concrete results of my work:
• Reduced platform latency by 30% through serverless architecture and CDN.
• Modernized legacy batch processes (COBOL) by migrating them to serverless solutions.
• Optimized AWS spending by 40% through autoscaling policies and cost monitoring.
• Reduced deployment times by 60% by implementing CI/CD pipelines with Terraform.
I have worked with teams from Santander, Coopeuch, and Sernageomin, covering architecture design, migration, security, and cost governance.
Immediate availability and 100% remote, with flexible hours to work with teams in Spain and Europe.
Spanish
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Santander – AvattarAWS Cloud ArchitectBANKING AND INSURANCEJanuary 2025 - December 2025 (11 months)Santiago de Chile, Chile• Designed serverless architecture with Lambda, S3, and CloudFront, reducing latency by 30% through geographic balancing and CDN.• Replaced legacy batch processes (COBOL) with serverless solutions using AWS Lambda, integrating APIs via API Gateway.• Implemented asynchronous communication between services with SNS and SQS, improving resilience and scalability of critical processes.• Implemented CI/CD pipelines with Terraform (IaC), achieving 60% faster deployments.• Trained teams in cloud-first development on the AWS stack.• Optimized AWS spending by 40% through autoscaling and monitoring with Cost Explorer.• Defined least privilege access policies (IAM) and network segmentation, aligned with banking standards.• Implemented observability with CloudWatch and traceability/auditing with CloudTrail for regulatory compliance.
- SernageominAzure Cloud ArchitectRAW MATERIALS INDUSTRYJanuary 2024 - December 2024 (11 months)Santiago de Chile, Chile
- Designed and implemented microservices architectures on Microsoft Azure using Java 11 and Spring Boot.
- Developed REST APIs and distributed services with Spring Cloud to integrate critical business applications.
- Implemented data persistence with Hibernate, JPA, and PostgreSQL, ensuring integrity, performance, and high availability.
- Deployed and managed applications on Azure Kubernetes Service (AKS) and Azure Spring Apps.
- Automated infrastructure and deployments using Terraform, Azure DevOps, and CI/CD pipelines.
- Implemented security using Microsoft Entra ID (Azure AD), Azure Key Vault, Spring Security, and OAuth2.
- Implemented monitoring and observability with Azure Monitor, Application Insights, and Log Analytics.
- Collaborated with multidisciplinary teams to translate business requirements into scalable, resilient, and secure cloud solutions.
- CoopeuchAWS Cloud ArchitectBANKING AND INSURANCEJanuary 2023 - December 2023 (11 months)Santiago de Chile, Chile• Participated as an AWS Cloud Architect and DevOps Engineer supporting multiple development cells (Credits, Campaigns, and corporate platforms), designing and implementing scalable, secure, and highly available cloud solutions.• Designed cloud architectures using Amazon EC2, Auto Scaling, Elastic Load Balancer, Amazon VPC, Route 53, and Amazon CloudFront, ensuring high availability and resilience.• Implemented serverless solutions using AWS Lambda, Amazon API Gateway, Amazon EventBridge, Amazon SNS, and Amazon SQS to automate processes and integrate microservices.• Managed storage services and databases using Amazon S3, Amazon EBS, Amazon EFS, Amazon RDS, and Amazon DynamoDB.• Automated infrastructure using Terraform (Infrastructure as Code), standardizing environments and reducing deployment times. Designed and implemented CI/CD pipelines using GitHub Actions, AWS CodePipeline, and CodeBuild to automate testing, building, and deployments. Implemented security strategies using AWS IAM, Secrets Manager, AWS KMS, Security Groups, Network ACLs, AWS Config, AWS CloudTrail, Amazon GuardDuty, and AWS Security Hub.• Implemented observability using Amazon CloudWatch, metrics, dashboards, centralized alarms, and AWS X-Ray for distributed tracing.• Optimized cloud costs using AWS Cost Explorer, AWS Budgets, Cost Anomaly Detection, resource tagging, Auto Scaling, Reserved Instances, and FinOps practices.• Collaborated with development, architecture, and operations teams promoting good DevOps practices, automation, and adoption of AWS services.
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Education
- Oracle Cloud Infrastructure 2023 Certified Foundations AssociateOracle University2023Oracle Cloud Infrastructure 2023 Certified Foundations Associate
- DevOps Essentials Professional Certificate (DEPC)CertiProf2019DevOps Essentials Professional Certificate (DEPC)