# Sergio Barraza

> Enterprise Support Lead at Amazon Web Services (AWS). 25+ years in software development. At AWS, I help customers design and optimize cloud solutions and guide them through AWS services adoption. I co-author AWS samples and blog posts on generative AI, AI agents with Amazon Bedrock AgentCore, voice AI with Amazon Nova Sonic, and FinOps.

All content on this site is free to read, index and cite. Machine-readable profile: https://sergiobarraza.com/profile.json

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## Profile

- GitHub: https://github.com/hadock
- LinkedIn: https://www.linkedin.com/in/hadock
- Credly: https://www.credly.com/users/sergio-barraza
- Talk: AWS re:Invent 2025 IND330 (Chalk talk) "Voice AI restaurant ordering platform powered by Amazon Nova Sonic" with Ravi Kumar

## Certifications & badges (active, from Credly)

- [AWS Certified Solutions Architect – Professional](https://www.credly.com/badges/00a9d1b7-8b90-4eb6-91dc-e1940093e427/public_url): Amazon Web Services Training and Certification; issued 2022-11-14, expires 2028-10-06
- [AWS Certified DevOps Engineer – Professional](https://www.credly.com/badges/82d9d87c-6ff5-409b-9b5e-acbebbd7d42a/public_url): Amazon Web Services Training and Certification; issued 2021-11-26, expires 2027-11-20
- [AWS Certified Solutions Architect – Associate](https://www.credly.com/badges/6bf5d301-c6ee-42d2-b780-053e8e469947/public_url): Amazon Web Services Training and Certification; issued 2020-01-16, expires 2028-10-06
- [AWS Certified Developer – Associate](https://www.credly.com/badges/812256c8-a5c5-4619-aa61-7287b29eb23a/public_url): Amazon Web Services Training and Certification; issued 2020-01-15, expires 2027-11-20
- [AWS Certified AI Practitioner](https://www.credly.com/badges/92d8a883-7407-49f6-81b6-6fb37cc5a94e/public_url): Amazon Web Services Training and Certification; issued 2025-01-07, expires 2028-01-07
- [AWS Certified AI Practitioner Early Adopter](https://www.credly.com/badges/4de6263b-3bf3-423a-8aaf-fab53a8e8af4/public_url): Amazon Web Services Training and Certification; issued 2025-01-07
- [AWS Certified Cloud Practitioner](https://www.credly.com/badges/f86383ff-0f53-4a13-ace1-d4fe92fef59c/public_url): Amazon Web Services Training and Certification; issued 2018-08-21, expires 2028-10-06
- [Learning Subject Matter Expert (SME)](https://www.credly.com/badges/c4ff4bb9-a8d7-4877-b92f-6930db407694/public_url): Amazon Web Services Training and Certification; issued 2026-08-24, expires 2028-12-31
- [AWS AI Technical Intermediate (L200)](https://www.credly.com/badges/20bd7789-d104-4b48-bd82-c1bd198bbc7e/public_url): AWS Worldwide Field Enablement; issued 2026-05-19
- [AWS AI Foundational (L100) Accreditation](https://www.credly.com/badges/8c4035ae-215d-4b4c-a31e-6bed90159cd7/public_url): AWS Worldwide Field Enablement; issued 2025-01-07

## AWS blog posts (co-authored)

- [Deploy a multimodal WhatsApp ordering assistant with Amazon Bedrock AgentCore](https://aws.amazon.com/blogs/machine-learning/deploy-a-multimodal-whatsapp-ordering-assistant-with-amazon-bedrock-agentcore/): 2026-09-04, AWS Machine Learning Blog. WhatsApp ordering via text, voice notes and real-time calls on AgentCore and Amazon Nova 2, with shared memory.
- [Building a restaurant telephony AI host with Amazon Connect](https://aws.amazon.com/blogs/machine-learning/building-a-restaurant-telephony-ai-host-with-amazon-connect/): 2026-08-24, AWS Machine Learning Blog. Phone ordering end to end with Amazon Connect, Connect Agentic Voice, Connect AI agents and AgentCore Gateway (MCP).
- [Build a serverless image editing agent with Amazon Bedrock AgentCore harness](https://aws.amazon.com/blogs/machine-learning/build-a-serverless-image-editing-agent-with-amazon-bedrock-agentcore-harness/): 2026-07-07, AWS Machine Learning Blog. Natural-language image editor on AgentCore harness with zero orchestration code, deployed with AWS CDK.
- [Omnichannel ordering with Amazon Bedrock AgentCore and Amazon Nova 2 Sonic](https://aws.amazon.com/blogs/machine-learning/omnichannel-ordering-with-amazon-bedrock-agentcore-and-amazon-nova-2-sonic/): 2026-04-20, AWS Machine Learning Blog. Real-time voice ordering across mobile, web and voice interfaces.
- [Build a FinOps agent using Amazon Bedrock AgentCore](https://aws.amazon.com/blogs/machine-learning/build-a-finops-agent-using-amazon-bedrock-agentcore/): 2026-03-31, AWS Machine Learning Blog. Conversational multi-account cost agent over Cost Explorer, Budgets and Compute Optimizer.
- [Building an AI powered system for compliance evidence collection](https://aws.amazon.com/blogs/machine-learning/building-an-ai-powered-system-for-compliance-evidence-collection/): 2026-03-31, AWS Machine Learning Blog. Architecture and deployment of an AI system that automates compliance evidence collection.
- [Integrating Amazon Bedrock AgentCore with Slack](https://aws.amazon.com/blogs/machine-learning/integrating-amazon-bedrock-agentcore-with-slack/): 2026-03-23, AWS Machine Learning Blog. Reusable Slack-to-AgentCore layer: webhook verification, SQS async processing, thread sessions, AgentCore Memory.
- [Voice AI-powered drive-thru ordering with Amazon Nova Sonic and dynamic menu displays](https://aws.amazon.com/blogs/machine-learning/voice-ai-powered-drive-thru-ordering-with-amazon-nova-sonic-and-dynamic-menu-displays/): 2025-10-16, AWS Machine Learning Blog. Quick-service-restaurant drive-thru combining Nova Sonic voice AI with interactive menu boards.
- [Build a conversational natural language interface for Amazon Athena queries using Amazon Nova](https://aws.amazon.com/blogs/machine-learning/build-a-conversational-natural-language-interface-for-amazon-athena-queries-using-amazon-nova/): 2025-08-13, AWS Machine Learning Blog. Bedrock Agents with Nova Lite translate natural language into Athena queries (CUR example).
- [Optimizing ODCR usage through AI-powered capacity insights](https://aws.amazon.com/blogs/compute/optimizing-odcr-usage-through-ai-powered-capacity-insights/): 2025-06-05, AWS Compute Blog. AI-driven insights for managing EC2 On-Demand Capacity Reservations.
- [Integrate Amazon Bedrock Agents with Slack](https://aws.amazon.com/blogs/machine-learning/integrate-amazon-bedrock-agents-with-slack/): 2025-05-21, AWS Machine Learning Blog. Bring Amazon Bedrock Agents into a Slack workspace.
- [Build a FinOps agent using Amazon Bedrock with multi-agent capability and Amazon Nova as the foundation model](https://aws.amazon.com/blogs/machine-learning/build-a-finops-agent-using-amazon-bedrock-with-multi-agent-capability-and-amazon-nova-as-the-foundation-model/): 2025-04-18, AWS Machine Learning Blog. Multi-agent Bedrock solution on Amazon Nova for AWS cost analysis.
- [Building a virtual meteorologist using Amazon Bedrock Agents](https://aws.amazon.com/blogs/machine-learning/building-a-virtual-meteorologist-using-amazon-bedrock-agents/): 2025-02-11, AWS Machine Learning Blog. Weather agent with Bedrock Agents, Amazon Cognito, AWS Lambda and AWS Amplify.
- [Deploy a serverless web application to edit images using Amazon Bedrock](https://aws.amazon.com/blogs/machine-learning/deploy-a-serverless-web-application-to-edit-images-using-amazon-bedrock/): 2024-10-21, AWS Machine Learning Blog. Serverless prompt-based image editing with an Amazon Titan image model.

## AWS solutions on GitHub (contributor)

- [aws-solutions-library-samples/guidance-for-voice-ai-in-app-ordering-using-amazon-bedrock-agentcore](https://github.com/aws-solutions-library-samples/guidance-for-voice-ai-in-app-ordering-using-amazon-bedrock-agentcore): Real-time voice ordering across mobile, web and voice interfaces with AgentCore and Nova 2 Sonic.
- [aws-solutions-library-samples/guidance-for-a-secure-chat-user-interface-for-amazon-bedrock](https://github.com/aws-solutions-library-samples/guidance-for-a-secure-chat-user-interface-for-amazon-bedrock): Secure browser chat UI for Amazon Bedrock Agents with AWS Amplify and Amazon Cognito.
- [aws-solutions-library-samples/guidance-for-cost-analysis-and-optimization-with-amazon-bedrock-agents](https://github.com/aws-solutions-library-samples/guidance-for-cost-analysis-and-optimization-with-amazon-bedrock-agents): FinOps agent using Bedrock multi-agent capability and Amazon Nova.
- [aws-solutions-library-samples/guidance-for-cost-analysis-and-optimization-with-amazon-bedrock-agentcore](https://github.com/aws-solutions-library-samples/guidance-for-cost-analysis-and-optimization-with-amazon-bedrock-agentcore): Conversational multi-account cost management agent on AgentCore.
- [aws-samples/sample-aws-devops-agent-interactive-demo](https://github.com/aws-samples/sample-aws-devops-agent-interactive-demo): AWS DevOps agent interactive demo.
- [aws-samples/sample-Integrate-Amazon-Bedrock-Agents-with-Slack](https://github.com/aws-samples/sample-Integrate-Amazon-Bedrock-Agents-with-Slack): Amazon Bedrock Agents in Slack.
- [aws-samples/sample-conversational-athena-query-agent](https://github.com/aws-samples/sample-conversational-athena-query-agent): Conversational Athena query agent with Amazon Nova.
- [aws-samples/sample-voice-ai-powered-contextual-menu-board-with-amazon-nova-sonic](https://github.com/aws-samples/sample-voice-ai-powered-contextual-menu-board-with-amazon-nova-sonic): Voice AI contextual menu board with Amazon Nova Sonic.
- [aws-samples/sample-ai-powered-compliance-evidence-collector](https://github.com/aws-samples/sample-ai-powered-compliance-evidence-collector): AI-powered compliance evidence collector.
- [aws-samples/sample-restaurant-telephony-ai-host-using-amazon-connect-customer](https://github.com/aws-samples/sample-restaurant-telephony-ai-host-using-amazon-connect-customer): Restaurant telephony AI host with Amazon Connect.
- [aws-samples/sample-multimodal-whatsapp-restaurant-agent](https://github.com/aws-samples/sample-multimodal-whatsapp-restaurant-agent): Multimodal WhatsApp restaurant ordering agent.
- [aws-samples/virtual-meteorologist-using-amazon-bedrock-agents](https://github.com/aws-samples/virtual-meteorologist-using-amazon-bedrock-agents): Virtual meteorologist with Amazon Bedrock Agents.

## Related solutions from my posts (companion samples; not authored by me)

- [aws-solutions-library-samples/sample-voice-ai-powered-drive-thru-with-amazon-nova-sonic](https://github.com/aws-solutions-library-samples/sample-voice-ai-powered-drive-thru-with-amazon-nova-sonic): Companion sample for the voice AI drive-thru post.
- [aws-samples/sample-Integrating-Amazon-Bedrock-AgentCore-with-Slack](https://github.com/aws-samples/sample-Integrating-Amazon-Bedrock-AgentCore-with-Slack): Companion sample for “Integrating Amazon Bedrock AgentCore with Slack”.
- [aws-samples/sample-serverless-image-editing-agent-bedrock-agentcore-harness](https://github.com/aws-samples/sample-serverless-image-editing-agent-bedrock-agentcore-harness): Companion sample for the AgentCore harness image editing agent.
- [aws-samples/aws-serverless-image-editing-tool-using-bedrock](https://github.com/aws-samples/aws-serverless-image-editing-tool-using-bedrock): Companion sample for the 2024 serverless image editing post.
- [aws-samples/sample-voice-ai-powered-in-room-service-with-amazon-nova-sonic](https://github.com/aws-samples/sample-voice-ai-powered-in-room-service-with-amazon-nova-sonic): Linked from the voice AI drive-thru post.
- [aws-samples/sample-odcr-ai-intelligence](https://github.com/aws-samples/sample-odcr-ai-intelligence): Companion sample for the ODCR capacity insights post.