John Lazaro

Applied AI Engineer & Full-Stack Developer

I build and integrate AI/ML and GenAI into products and systems. Passionate about engineering, I love to troubleshoot, solve complex problems, and build systems that are fast, reliable, scalable, and maintainable.

View My Work

What I Do

Here's what I focus on and what I bring to the table.

AI/ML Integration & Engineering

I build and integrate AI into products and development workflows, implementing chatbots and RAG pipelines using AWS AI services like Bedrock, SageMaker, and AgentCore.

I also integrate AI-assisted development tools into engineering workflows with security and best practices in mind. AI/ML is moving fast and I make it a point to keep up with where it's heading.

Full-Stack Development

From backend APIs to frontend UIs, I handle the full picture. I build with React, Next.js, and TypeScript on the frontend, and on the backend I work with PostgreSQL, FastAPI, and Python, with a focus on systems that are fast, reliable, and maintainable.

I deliver under Agile methodology and collaborate closely with product and engineering teams throughout.

AWS & Cloud Architecture

I design and architect systems on AWS, whether it's a 3-tier web app, an event-driven architecture, a serverless stack, or an AI/ML workload.

I integrate AWS services into applications and internal workflows, providing the right design solution based on the workload, requirements, and tradeoffs, with cost and security in mind.

Latest Projects

A look at some of the things I've built and shipped.

Drapelab

drapelab.shop

AI-powered e-commerce platform for gym wear and fitness products.

  • Implemented recommendation system using Personalize
  • Implemented chatbot support using Bedrock AgentCore with Guardrails
  • Implemented RAG pipeline using S3 Vectors
  • Implemented automated product review sentiment analysis using Comprehend
  • Implemented demand forecasting using SageMaker
  • Implemented automated model evaluation using Strands
  • Implemented AI/ML workflow and pipeline orchestration using Lambda, Step Functions, and EventBridge
  • Implemented checkout workflow using Stripe

Focus on Force

focusonforce.com

E-learning and e-commerce platform for Salesforce certification training.

  • Implemented customer features that enhance user experience
  • Implemented LMS and e-commerce workflow customizations using LearnDash and WooCommerce
  • Implemented AI-powered product recommendation system using Recombee
  • Built B2B dashboards for corporate user insights
  • Built feature that automates database cleanup
  • Implemented secure course material management using S3 and CloudFront
  • Set up alerts and continuous monitoring using New Relic

Urban Gadgets

urbangadgets.ph

E-commerce platform for tech and lifestyle products.

  • Optimized POS and inventory sync between online and physical stores
  • Implemented cart and checkout workflow customizations

Experience

Companies and teams I've worked with over the years.

Focus on Force

Aug 2020 – Present

Senior Full Stack Developer

Tech Stack

PHPMySQLJavaScriptNginxApachePHP-FPMCentOSS3CloudFrontWAFNew RelicWordPressWP EngineWooCommerceLearnDashGamiPressGitBitbucket
Responsibilities
  • Delivered product features under Agile methodology
  • Owned AWS service integrations for CDN, DNS, storage, and security
  • Performed application and database optimizations
  • Provided solution design and handled implementation
  • Troubleshot complex issues related to performance and availability
  • Collaborated with project managers on product roadmap and features
  • Implemented AI-powered product recommendation system using Recombee
  • Built B2B dashboards for corporate user insights
  • Implemented secure course material management using S3 and CloudFront
  • Set up alerts and continuous monitoring using New Relic
  • Mentored and trained developers on development workflows and best practices
  • Conducted code reviews to maintain code quality and standards
  • Led adoption of AI-assisted development tooling across the team using Cursor

People Partners BPO

Jul 2018 – Jan 2020

Full Stack Developer

Tech Stack

JavaScriptReactPHPMySQLLaravelWordPressEC2RDSCloudFrontS3GitBitbucketInfusionsoftZapier
Responsibilities
  • Developed and shipped features under Agile methodology
  • Developed React-based frontend applications
  • Developed REST API services and implemented frontend integration
  • Developed new features to enhance user experience on WordPress
  • Resolved existing bugs and issues on WordPress
  • Collaborated with marketing team to implement sales and marketing automation tools

Flat Planet

Jul 2015 – Mar 2017

Mobile Application Developer

Tech Stack

AngularJSJavaScriptIonicCordovaHTMLCSS
Responsibilities
  • Developed cross-platform mobile applications using Ionic and Cordova
  • Built and integrated RESTful APIs into mobile app features
  • Collaborated with backend team on feature scoping and delivery

Curo Teknika

Dec 2012 – Jul 2015

Web Application Developer

Tech Stack

Zend FrameworkPHPMySQLLESSBootstrapJavaScriptjQueryHTMLCSS
Responsibilities
  • Developed internal web applications
  • Designed and implemented application UI/UX across multiple internal tools
  • Collaborated with different teams for feature scoping and timelines

Certifications

Credentials I've earned and part of how I keep learning and staying current.

IBM AI Developer Professional Certificate
IBM Generative AI Engineering Professional Certificate
AWS Certified Cloud Practitioner
AWS Certified AI Practitioner In Progress

Let's Work Together

Open to new opportunities, let's talk.

Email
techwithjohnblog@gmail.com
LinkedIn linkedin.com/in/johnlazaro