RMR

Profile

Data Engineer. AWS Certified Cloud Practitioner, Licensed Electronics Engineer (ECE/ECT)

Data engineer who automates with AI agents.

Five years building ETL pipelines and cloud data infrastructure at Accenture and BTG International. I now build Claude Code skills and agent automation on top of that foundation. The pipelines came first, and they are why the automation holds up in production.

Available part-time, 20–25 hrs/week, remote only.

Email me GitHub (opens in a new tab) Résumé (PDF download)
Experience

Where I have worked

  1. BTG International

    Data Engineer

    Design, build, and optimise data pipelines and ETL processes into the data warehouse. Build and maintain the data models and schemas behind analytics and reporting.

    • AWS Administrator Administer the AWS infrastructure behind multiple web applications, data engineering workloads, and databases: availability, security, and operational stability across environments.
    • Agent tooling Built Claude Code skills, hooks, and agent tooling for internal accounting and reconciliation workflows.
    • Individual Contributor Automation and reporting solutions built to business requirements; data cleansing, validation, and analysis in Python for cross-functional teams.

  2. Accenture

    Data Engineering Analyst

    Applied data engineering principles to reusable workflows: ingestion, quality, transformation, optimisation. Scalable ETL pipelines, production deployment, and a legacy data warehouse migration built on cloud architecture principles.

    • Lead ETL Developer Led a team building DB and ETL processes. Delivered roughly five end-to-end orchestrations: extraction from RDS, transformation via AWS Glue, loading into Redshift and Aurora. Built on Step Functions, Glue, Lambda, ECR, and ECS.
    • Front-End Web Developer AngularJS front-end work in TypeScript, HTML, and CSS.

  3. PLDT Inc.

    Internship

    • Customer Experience Zone and Core Network Operations
Projects

What I have built

Full-stack SaaS

Business Inventory

Multi-tenant inventory and sales application for small retail businesses, running in production.

Per-business data isolation, atomic sales writes that prevent overselling, price-history tracking, and an analytics dashboard with low-stock alerts and multi-currency support. Authentication is hand-rolled cookie sessions with admin-approval gating rather than NextAuth, a deliberate choice, since the approval step is a domain rule and not an auth-provider concern. Running in a real deployment for a perfume decanting business.

Demo login demo@vessel.app demodemo

Business Inventory dashboard showing revenue, profit, stock value and average order value tiles, a reinvestment goal progress bar, and a sales trend chart.
Dashboard from the live demo tenant.
  • Next.js App Router
  • TypeScript
  • Prisma
  • SQLite / Turso
  • Tailwind
  • Vercel
Claude Code Skill

csv-profiler

A Claude Code Skill that profiles messy CSV and Excel files, then returns a data-quality report with prioritised cleanup steps.

The split is the point: deterministic statistics are Python, interpretation and recommendations are Claude. Null counts, type inference, cardinality, and outlier detection are arithmetic and belong in pandas, where they are reproducible and testable. Deciding which of forty quality issues to fix first is judgement, and that belongs to the model. Knowing where that boundary sits is the differentiator, not code volume. This is a data quality problem solved by someone who does data quality for a living.

  • Python
  • pandas
  • Claude Code Skill format
  • pytest
  • GitHub Actions
Domain tool

PH Freelancer Tax Calculator

Quarterly tax calculator for Philippine freelancers on the 8% income tax option (non-VAT).

The 8% option carries a ₱250,000 annual deduction that has to be applied across quarters rather than claimed all at once, which is where the arithmetic usually goes wrong. The tool tracks the deduction as it is consumed quarter by quarter and shows what is actually owed each filing period.

Hosted on Render’s free tier, so the first request may take 30–60 seconds to wake the service. A calculation aid, not tax advice; filing still happens through eBIRForms.

Quarterly tax ledger showing income entered per quarter, the ₱250,000 deduction applied to each, and the resulting taxable and payable amounts with a total tax payable figure.
The ₱250,000 deduction consuming across quarters.
  • Python
  • Streamlit
  • pandas
  • openpyxl
  • Render
Internal tools

Data & Automation Tooling

Python tooling for accounting operations, built and used in production at an accounting services firm.

Ledger reconciliation matching, GST and BAS data preparation, government API lookups, and Excel pipeline automation. Each piece replaced a manual spreadsheet step that ran on a fixed schedule. Private client work, so the capability is described here but the implementation is not.

Private client work. No repository or live link.

  • Python
  • pandas
  • openpyxl
  • Claude Code Skills
  • custom hooks
Capability

What I do

Data engineering
  • ETL pipeline design
  • Ingestion
  • Transformation
  • Data quality
  • Legacy warehouse migration
AWS
  • S3
  • Glue
  • Lambda
  • Step Functions
  • ECS / ECR
  • Athena
  • Redshift
  • Aurora
  • RDS

AWS Certified Cloud Practitioner

AI & agents
  • Claude Code Skills
  • Hooks
  • Subagents
  • MCP servers
  • Agent SDK
  • Microsoft Copilot Studio
  • genAI integration
Languages & data
  • Python
  • PySpark
  • SQL (PostgreSQL, MySQL, T-SQL)
  • TypeScript
Web
  • Next.js
  • AngularJS
  • Node.js
  • Tailwind
Practice
  • Git
  • Azure DevOps CI/CD
  • Agile / Scrum
Credentials

Credentials

  • AWS Certified Cloud Practitioner
  • Licensed Electronics Engineer ECE
  • Licensed Electronics Technician ECT
  • BS Electronics Engineering Saint Louis University, Baguio City
Contact

Get in touch

A good first message says what needs automating and a rough timeline. That is enough for me to tell you whether I am the right person and what it would take.

Email GitHub github.com/reinrmz (opens in a new tab) Résumé reinhard-ramirez-cv.pdf (PDF download)