Santiago Z.

Senior DevOps/SRE and data/platform engineer with 15+ years of experience building reliable, high-performance systems on AWS. The last 5+ years I worked inside Upwork's engineering org on logging, monitoring, data, and AI-agent platforms — turning noisy production data into systems engineers and leadership actually rely on day to day.

Recent work I'm proud of:

• Logging pipelines at scale — designed and built S3-to-Parquet conversion pipelines that dramatically cut analytics query latency and storage cost, making log-driven debugging and metrics practical across the org.
• Anomaly detection from user events — built an internal service that consumes user-generated events to surface production incidents earlier than traditional monitoring.
• Data engineering & dashboards — authored the queries and dashboards leadership uses to track engineering performance, GPU utilization, and other cross-cutting metrics.
• AI agents on real codebases — designed and shipped a documentation-generator agent that reads a service's repo and produces accurate, maintained docs, saving engineering hours per service.

What I bring to your project:

• AWS, deep — ECS (Fargate & EC2), ALB/NLB, Route53, VPC/networking, Landing Zone, well-architected reviews, security hardening, serverless (Lambda, Step Functions, DynamoDB, SNS/SQS)
• Infrastructure as Code — Terraform and CloudFormation, modular and scalable
• CI/CD — Jenkins and the AWS CodeSuite (CodePipeline / CodeBuild / CodeDeploy / CodeCommit)
• Data — S3/Parquet pipelines, SQL, dashboarding, cost-aware analytics
• AI / LLM — agent design, retrieval over code and docs, prompt and tool-call engineering
• Languages — Python (primary), Bash, some Django
• Observability — CloudWatch, Datadog, Zabbix
• Containers & config mgmt — Docker, Ansible

I like owning a problem end-to-end — from architecture through delivery and operation — and writing infra and code that other engineers can read, extend, and trust. If you have a hard problem in AWS, data pipelines, observability, or AI agents, I'd love to hear about it.

Previously AWS-certified (DevOps Engineer Professional, Security Specialty, Solutions Architect Associate, SysOps Administrator Associate) and Terraform Associate. Certifications have lapsed; the experience hasn't.