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Guevfstack
Available for freelance

BuildingAutomationsfor businesses

I'm Jaime I. Guevarra Jr. — a full-stack Software Engineer building web and mobile applications, automating workflows, and integrating systems to help businesses run seamlessly.

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8+ Companies
Served Remotely
7 Years
Experience
Featured Work

Case Studies

Real-world projects that delivered measurable results — from automation workflows to high-performance web apps.

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Wordpress Development

WE Institute | Beaver Builder WordPress Development for COM Marketing

WordpressBeaver BuilderCSSJavascript +3 more
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Wordpress Development

Trouve Ton Courtier | Custom WordPress Theme Development

WordpressPhpCSSJavascript +3 more
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Wordpress Development

REER 2020 | Genesis & Elementor WordPress Development

WordpressGenesis FrameworkElementorJQuery +2 more
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What I do

Services

Customer portals, CRM systems, integrations and workflow automation — fast, scalable and easy to maintain.

MVP & Web App Development

Scalable web applications, custom dashboards, client portals and startup MVPs — built with modern frontend frameworks or low-code tools, whichever ships faster without boxing you in.

  • Startup MVPs and custom business applications
  • Dashboards, client portals and internal tools
  • React, Angular, Vue, WeWeb and Webflow frontends
  • Supabase, .NET and SQL backends

CMS & Website Development

High-converting websites, landing pages and content-driven platforms your marketing team can manage on their own.

  • Custom WordPress sites and headless WordPress
  • HubSpot CMS websites and templates
  • Campaign landing pages in Unbounce, HubSpot and Marketo
  • SEO-friendly, fast-loading builds

API & Database Integrations

Connect your systems, keep data in sync and plug in the third-party services your business depends on.

  • Third-party API integrations (e.g. EagleView)
  • Data sync between CRMs, portals and databases
  • REST API development
  • Database design and data migration

CRM & Workflow Automation

Customize your CRM, automate repetitive processes and streamline day-to-day business operations.

  • Zoho and HubSpot CRM customization
  • Workflows in Make, Zapier and n8n
  • Marketing automation and lead routing
  • Fewer manual steps, fewer data-entry errors
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Experience

Where I've worked

Since 2018 I've built websites, web apps, integrations and automations for agencies and businesses in Australia, Canada and the Philippines — mostly remote, often long-term.

  1. Social Garden

    Freelance

    Sydney, Australia · Remote

    HubSpot CMS Developer

    Jul 2024 – Present

    Building HubSpot landing pages and the marketing CMS website, and customizing and extending HubSpot for marketing processes, integrations and automation.

    Landing Page Developer

    Jul 2022 – Present

    Designing and building high-converting landing pages for social media campaigns using Unbounce, HubSpot and Marketo.

    WordPress Developer

    Jul 2022 – Present

    Building and maintaining WordPress websites for Social Garden clients, implementing designs and keeping them SEO-friendly.

    HubSpotUnbounceMarketoWordPressPHPJavaScript

  2. Mini-Stack.com

    Full-time

    Ontario, Canada · Remote

    Software Developer – Energy & Solar Applications

    Jan 2025 – Present

    Developing a business web application for solar system design with EagleView integration for accuracy and efficiency. The platform also streamlines the client’s internal processes and includes a full file management module.

    SupabaseWeWebEagleView API

  3. Energin

    Full-time

    Sydney, Australia · Remote

    Full Stack Software Developer

    Apr 2022 – Oct 2024

    Maintained and extended EPX, the company’s energy tendering system (C# MVC, MSSQL), and helped build BrokerHub, a broker portal with an Angular/TypeScript frontend and a C# .NET backend on MSSQL.

    Website Developer & Zoho Marketing Automation Specialist

    Nov 2021 – Nov 2022

    Developed web pages, integrated data and maintained two websites for the marketing team, alongside CRM automation, data scraping and website administration.

    C#.NET MVCAngularTypeScriptMSSQLZoho CRM

  4. In2Web IT Solutions

    Contract

    Metro Manila, Philippines

    Full Stack Software Developer

    Dec 2023 – May 2024

    Full stack role focused on the front end: designed and built a library of reusable React components — modular, configurable and scalable — so the team could ship features consistently and faster.

    ReactPHP

  5. Social Garden

    Full-time

    Sydney, Australia · Remote

    Website Developer

    Jan 2020 – Jan 2022

    Subcontracted Unbounce and WordPress developer building campaign landing pages and websites.

    UnbounceWordPressMarketoJavaScript

  6. Oolong Media

    Full-time

    Quebec, Canada · Remote

    WordPress Developer

    Oct 2018 – Jan 2022

    Subcontracted WordPress developer building and maintaining client websites.

    WordPressJavaScriptjQuery

  7. COM Marketing

    Freelance

    Alexandria, NSW, Australia · Remote

    WordPress Developer

    Sep 2019 – Nov 2019

    Short freelance engagement building WordPress pages — my first freelance project.

    WordPress
Open to work

Ready to build something remarkable?

Whether you need a blazing-fast headless store, a smart automation workflow, or a custom API — let's talk.

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