Full-Stack Developer · WordPress Specialist · Automation & AI Workflow Builder

I build reliable digital systems that turn complex work into simple workflows.

From modern websites, onboarding portals, internal tools, and custom WordPress platforms to API integrations, Google Workspace automation, Cloudflare systems, Chrome extensions, and practical AI workflows.

Explore my work Start a project
12+ yearsRemote development
Full stackFrontend to infrastructure
Automation firstReliable repeatable systems
Available nowU.S. Eastern and European overlap
Geovanne Navalta
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Executive Summary

I’m a full-stack developer and systems builder who connects data, automation, and practical AI to deliver measurable outcomes. Since 2014, I’ve worked across e-commerce intelligence (Amazon/OA), high-volume web scraping, Google Sheets/App Script control planes, serverless backends on Google Cloud, Chrome extensions, and retrieval-augmented generation (RAG) flows using OpenAI, Gemini, or local (Ollama) models. My approach: design reliable pipelines, preserve data quality (barcodes, prices, URLs), add observability, and keep the UX fast and simple. I ship solutions that scale without drama—and are easy for teams to run daily.

Current Professional Profile

Work setup Remote · Full-time or contract

Also available for long-term, retained, and project-based engagements.

Location & timezone Davao City · Asia/Manila UTC+8

Can maintain practical overlap with U.S. Eastern and European schedules.

Availability Ready to start immediately

Open to a technical assessment or paid trial with defined deliverables.

Collaboration Documentation-driven and security-minded

Comfortable with non-technical clients and engineering teams, including NDA-aware work.

Career Value Proposition

  • End-to-end delivery: connects user interfaces, backend logic, storage, notifications, reporting, and deployment into one practical system.
  • Cross-functional problem solving: combines development, troubleshooting, automation, SEO, performance, and operations instead of treating them as isolated disciplines.
  • Recoverable workflows: uses validation, audit logs, retries, deduplication, resumable processing, and clear failure diagnostics.
  • Complete handoff: preserves stable behavior, documents changes, and delivers deployable files, test utilities, and release notes rather than incomplete examples.

Core Engineering Principles

  • Reliability by design: resilient fetchers, retries/backoff, saved progress, resumable runs.
  • Data hygiene first: preserve leading zeros, validate GTIN check-digits, normalize URLs/hosts.
  • Small, composable services: REST/GraphQL APIs with clear contracts and structured logging.
  • Security & secrets: least-privilege, token rotation, Secret Manager/KMS, CSP and SSRF awareness.
  • Observability: Cloud Logging/Monitoring, error classes, latency budgets, actionable alerts.
  • Human-in-the-loop: Sheets dashboards, color-coded states, concise summaries for quick review.

My Skills – API Integrations

  • REST/GraphQL design with versioning, pagination, idempotency, and typed responses.
  • Auth: OAuth 2.0, JWT, app-level tokens, key rotation on 429s with cooldown windows.
  • Google Custom Search (CSE): query builders, date filters (e.g., dateRestrict), results cleansing, key/cx rotation.
  • YouTube Data API: channel/video analytics, captions/comments processing, lead discovery.
  • Shopify/Storefront/Admin: product, price, variants, inventory reads; webhooks and throttling.
  • Stripe, Slack, Jira/Linear/ClickUp, Notion, Airtable, HubSpot: integrations for payments, alerts, and ops.
  • OpenAI/Gemini/Ollama: embeddings, chat, function/tool calling for RAG and agents.
  • Facebook/WhatsApp Business, Twilio: messaging flows with templates and opt-in compliance.

My Skills – Frontend

  • HTML5/Accessibility: semantic structure, keyboard nav, ARIA patterns.
  • CSS3: responsive layout, utility-first (Tailwind) or Bootstrap; component theming.
  • JavaScript (ES6+): modular code, fetch/XHR, caching, client-side templating.
  • WordPress: custom themes/plugins with performance and secure options pages.
  • Perf: lazy images, async decoding, code-split, critical path CSS, CLS-safe UI.

My Skills – Backend

  • Node.js (Express/Fastify) and Python (Flask/FastAPI) microservices.
  • PHP for CMS glue and lightweight APIs when needed.
  • AuthN/AuthZ: JWT/OAuth, signed URLs, HMAC checks, RBAC-ish guards.
  • Resilience: connection pools, retries/jitter, circuit breakers, deadline/timeout discipline.
  • File/CSV: streaming parsers, large merges, safe encodings (UTF-8), memory-bounded ops.

My Skills – Data & Storage

  • Relational: Cloud SQL (Postgres/MySQL), migrations, indexes, EXPLAIN analysis.
  • NoSQL: Firestore (document), Bigtable (wide-column) for hot KV or time-series access.
  • Warehouse: BigQuery for aggregation/analytics, scheduled queries, cost controls.
  • Caching: Memorystore (Redis/Memcached), cache keys, TTL strategies, stampede protection.
  • Object storage: Cloud Storage for artifacts, signed downloads, lifecycle rules.

My Skills – Web Scraping & Automation

  • Stacks: Python (requests/httpx, BeautifulSoup, lxml), concurrency (ThreadPool/multiprocessing).
  • Anti-bot survival: user-agents, session reuse, proxy rotation, randomized pacing.
  • Error handling: SSL quirks, 413/429/5xx backoff, resume-from-last progress markers.
  • Extraction: JSON/JSON-LD parsing, robust CSS/XPath selectors, schema fallbacks.
  • Outputs: CSVs with strict headers (Barcode, price_extracted, source_url), direct Sheets writes.

My Skills – E-Commerce Intelligence (Amazon / OA)

  • Matching: retailer product → Amazon listing via UPC/EAN/GTIN, title/variant heuristics, embedded JSON-LD.
  • Signals: Keepa metrics (e.g., BSR thresholds), ROI%, profit margin, brand-listing risk, stock/price deltas.
  • Trust checks: website HQ, payment methods, CC acceptance, brand vs third-party listing risk.
  • Workflows: per-retailer collections scrape, page limits/time caps, batch zip outputs, auto-download.
  • Sheets ops: status color-coding, dedupe, URL cleaning, barcode check digits, PH-timezone stamps.

My Skills – Google Apps Script & Spreadsheet Ops

  • CSE pipelines: date filters, key/cx rotation with 24h cooldown, 429 logging, per-row progress colors.
  • Data shaping: column mapping/renames, delete empty cols, preserve leading zeros, URL normalizers.
  • Utilities: auto-increment barcodes, dedupe by domain/slug, dynamic column widths, bold/wrap headers.
  • Integrations: Drive/Sheets read-write, on-edit/on-trigger jobs, structured error reporting.

My Skills – Google Colab & Python Notebooks

  • Scrape/ETL notebooks: batch URL fetch, progress bars, rotating proxies, safe timeouts.
  • CSV merging: typed joins (e.g., Barcode), large file handling, PH-timezone naming.
  • Artifacts: zip bundles, auto-download links, Drive uploads; reproducible environment cells.

My Skills – AI, RAG & Lightweight Agents

  • Embeddings/RAG: chunking CSV catalogs, hybrid search, prompt-safe summaries, factual grounding.
  • Models: OpenAI, Gemini, and local (Ollama) when privacy/cost/latency requires.
  • Agents: tool chaining (search → fetch → match → verify), failure surfaces, human-readable rationales.
  • Evaluation: precision/recall sets for product matching and dedupe, regression dashboards.

My Skills – Chrome Extension Development

  • MV3 service workers, content scripts, cross-tab messaging, storage sync/local.
  • In-page extraction: parse dynamic product pages, emphasize JSON-LD and API calls.
  • Secure backends: signed requests, throttled endpoints, granular permissions.

My Skills – Google Cloud Platform

I deploy practical, cost-aware architectures on GCP: Cloud Run for containerized HTTP services, Cloud Functions for light triggers, Cloud Scheduler/Tasks for orchestration, Pub/Sub for decoupled events, Firestore/Cloud SQL for app data, BigQuery for analytics, Bigtable/Redis for hot reads, Secret Manager/KMS for secrets/keys, and Cloud Build/Artifact Registry for CI/CD. Logging/Monitoring/Error Reporting keep services observable and calm.

  • Cloud Run, Cloud Functions, App Engine, Cloud Build, Artifact Registry
  • Cloud Scheduler, Cloud Tasks, Pub/Sub, Eventarc, Workflows
  • Cloud SQL, Firestore, BigQuery, Bigtable, Memorystore (Redis/Memcached)
  • Cloud Storage, Cloud CDN, Cloud Load Balancing, Cloud DNS, VPC/Firewall
  • Secret Manager, Cloud KMS, Cloud Logging/Monitoring/Error Reporting
  • Vertex AI (embeddings/hosting when suitable)

Selected Projects (Snapshots)

  • Shopify Collections Scraper: batch collections with time caps, concurrent workers with safe backoff, outputs normalized CSVs (Barcode, price_extracted, source_url), auto-zip and auto-download.
  • Sheets-Driven CSE Discovery: key/cx rotation, one-week filter, per-row color states, and error classes for quick triage.
  • Amazon Matching Assistant: UPC/variant/title matching with RAG-style evidence, highlighting brand vs third-party risk and estimated ROI/BSR signals.
  • Chrome Extension (MV3): page augmentation to surface JSON-LD/structured data, one-click export to Sheet/API.

Roles & Collaboration

I act as a full-stack engineer, data plumber, and ops enabler. I document assumptions, keep handoffs crisp, and make systems runnable by non-engineers through Sheets dashboards and clear logs. I’m timezone-aware and comfortable coordinating across teams and tools (Slack/Jira/Linear/ClickUp).

Tooling & Stack Overview

  • Languages: JavaScript/TypeScript, Python, PHP
  • Frameworks: Express/Fastify, Flask/FastAPI, WordPress
  • Data: Postgres/MySQL, Firestore, BigQuery, Bigtable, Redis
  • Infra: Cloud Run, Cloud Functions, Scheduler/Tasks, Pub/Sub, Secret Manager, KMS
  • Scraping: requests/httpx, BS4/lxml; proxy rotation; concurrency controls
  • AI: OpenAI/Gemini, Ollama; embeddings, RAG, agents
  • DX: Cloud Build, Artifact Registry, lint/test, structured logs, error reporting
  • Application frameworks: Laravel, React, Next.js, Vue, Inertia, Tailwind CSS
  • CMS & commerce: WordPress, WooCommerce, Shopify, Elementor/Pro, custom themes and plugins
  • Cloudflare: Pages, Workers, Pages Functions, KV, R2, environment variables, cache and deployment diagnostics
  • Google Workspace: Apps Script, Gmail, Drive, Sheets, Calendar, Docs, triggers, and Script Properties
  • Automation platforms: n8n, Make, Zapier, browser automation, scheduled and resumable jobs
  • SEO & analytics: technical SEO, Core Web Vitals, GA4, Search Console, GTM, conversion tracking, and UTM structures
  • Delivery & hosting: Git/GitHub/GitLab, Vercel, Netlify, Linux, DNS, hosting panels, deployment packages, and release notes

What You Can Expect

  • Clear problem framing, minimal viable pipeline, and measured iterations.
  • Strong data guarantees: consistent headers, preserved barcodes, normalized URLs.
  • Operational clarity: dashboards, logs, and lightweight runbooks.
  • Security hygiene: secrets isolation, least-privilege credentials, and regular key rotation.
  • Scalable results: from single-run notebooks to scheduled, observable services.

My Skills – API Integrations (Legacy Summary)

  • RESTful APIs: Designing and consuming RESTful APIs for seamless data exchange between applications.
  • GraphQL: Implementing and querying data using GraphQL, focusing on efficient data fetching and reduced over-fetching.
  • API Authentication and Authorization: Implementing secure authentication mechanisms (e.g., OAuth 2.0, JWT) and managing authorization policies.
  • Data Serialization and Deserialization: Working with JSON and XML for API communication.
  • API Testing and Documentation: Postman/Swagger UI and contract documentation.

My Skills – Frontend (Legacy Summary)

  • HTML5: For structuring web content.
  • CSS3: Responsive design with Bootstrap/Tailwind.
  • JavaScript: ES6+ features and dynamic UI.
  • WordPress: Theme and plugin development.
  • Bootstrap: Rapid prototyping with components.

My Skills – Backend (Legacy Summary)

  • Node.js: Scalable server-side apps.
  • Apps Script: Google Workspace automations.
  • Python: Django/Flask/FastAPI backends.
  • Automation and AI: Practical agents and pipelines.
  • API Development: REST and GraphQL.