Miguel Piolo Valencia — Senior Frontend Engineer

01 / Featured work

Hometime, 2021–2026

Joined during the v1 → v2 rebuild and worked across the platform. Code is proprietary, so here's what shipped and what it did.

Payments

Guest payments, taxes and fees

Stripe-powered payments for every guest transaction, from booking to payout, plus the tax and fee rules behind every statement.

Charging, pre-authorising, refunds and failed-payment handling, end to end
Short-stay levies calculated per booking and per channel, no manual work
Per-property fees and direct-booking pricing that strips OTA fees automatically

AUD 84M+

payment value

47.7K

payments processed

AUD 15M+

security deposits

7.5%

margin loss prevented

ReactTypeScriptStripe

Direct booking

A branded booking site with no channel cut

The full flow from listing to availability, pricing, payment and confirmation, so hosts take bookings without paying an OTA fee.

Stripe checkout, with guest messages flowing into the PMS inbox
Special Offers: custom pricing for repeat guests, groups and corporate clients
Up to 20 properties per offer, with a soft calendar hold while the guest decides

311K+

bookings since launch

AUD 386M

gross revenue

23%

conversion lift, Special Offers

7.5×

adoption growth

Next.jsReactTypeScriptStripe

Owner Portal

Live visibility for homeowners

Owners used to call their property manager to see how their place was doing. The portal put revenue, bookings, calendar, statements and documents in one place.

Revenue dashboard with 12 months of net revenue and upcoming-booking forecasts
Owners book their own stays; cleaning and confirmations happen automatically
Statements generated twice monthly, with five role-based access levels

93%

owner login rate

1,900+

homeowners on the portal

131K+

statements generated

23.6K

owner bookings

ReactTypeScriptResponsive

Spotlight · Guest Guide revamp

One digital guide for every stay

A mobile-first guest guide built into the PMS. Guests open it by link or QR code, and it changes as their stay moves from booking to check-in to check-out.

16.7K

guest guides accessed

Built in

to the PMS, no separate tool

Opening the guide

Before the stay

Checking in

During the stay

Check-out

Why it changed

The old guide was plain and static, with little to interact with. The revamp set out to make it something guests would actually enjoy opening.

I owned it end to end: wrote the tech spec, turned requirements and designs into an implementation plan, chose the packages, implemented the WYSIWYG editing, and built the animations with Motion.

What's new

Content follows the guest journey: check-in details on arrival, check-out steps when it's time to go
Hosting partners set it up per property: house manual, local guide and house rules
A perks section for discounts and add-on services
One tap to message the host from any screen

ReactTypeScriptMobile-firstChakra UIMotionWYSIWYG editor

Also shipped: PMS and integrations

Platform totals, team results

351K+

Reservations Management

Airbnb, Booking.com, Vrbo and direct bookings in one view, with automatic repricing.

122/day

Multi-Calendar

One calendar for every property, channel and task. The team's daily hub.

833K+

Automated Messages

Event-triggered guest messaging templates with conditional delivery.

311K+

Task Management

Automated ops tasks from check-out to check-in, assigned to external contractors.

3,570+

Property Onboarding

Signed contract to listing-ready, published across channels, with no manual setup.

300+

Airbnb Full Sync

Listing fields mapped across 3,500+ properties, with sync status at a glance.

2,748

Booking.com & Vrbo

Properties published with real-time rate and availability sync.

60%

HostBuddy AI

Of guest messages answered by AI, using full property and reservation context.

02 / Before Hometime

Earlier work

Highlight

Likha-iT

Full stack developer building APIs and mobile apps for Japanese clients in mobility and education.

2019–2021 · Software Engineer · Java (Spring Boot), Angular, React Native, PostgreSQL, Ruby on Rails

Earthcar

Web + mobile

Japanese car-sharing service where the app is the car key: no membership or joining fees, built for low-cost, long-duration rentals.

Built the React Native app's Bluetooth car key: guests unlock the car from their phone, with automatic retries on failed connections and a wake-up step for when the key box is asleep
Built the active-booking screen: the assigned car, pickup station, plate number and a live countdown to return time
Built the booking form on the Angular website, and built and maintained the Spring Boot APIs behind the app and site

React NativeAngularSpring Boot

Website App Store Google Play

Toku-P

Web + iOS / Android

Parking search and reservation across 100,000+ lots in Japan, with advance booking, cashless payment and online monthly contracts. Owners list unused spaces for free.

Built the parking booking forms and other UI on the Angular website
Built and maintained the Spring Boot APIs behind the website and the iOS and Android apps

AngularSpring BootReact Native

Website App Store Google Play

Educom

Tablet app

A tablet learning app for Japanese schools, built for EDUCOM. Students worked through lessons and modules; teachers created and managed them. The app has since been retired.

Built the React Native app for Android tablets end to end, with separate experiences for students and teachers
Built module management for teachers: creating lessons, uploading files and adding videos that students play in the app
Built and maintained the app's APIs

React NativeAndroid tablets

educom.co.jp

Venteny

2018 · Web Applications Developer · Ruby on Rails

A B2B employee benefits platform where companies reward their staff with points.

Built the employee loan application flow, plus the admin dashboard for tracking loans and revenue
Built the points marketplace, where employees redeem points for products and benefits from merchant partners
Worked on the core platform companies use to award points to their staff

venteny.com

03 / Toolkit

Skills

Frontend

ReactTypeScriptNext.jsReact NativeAngularReduxZustandReact Query / SWRGraphQL / ApolloReact Hook FormZodWebSockets / SSEi18n / localization

UI and styling

Tailwind CSSStyled-componentsChakra UIMotion (animation)StorybookDesign systemsAccessibility (WCAG)Responsive / mobile-first

Testing and performance

Jest / VitestTesting LibraryPlaywright / CypressCore Web VitalsLighthouseSentry

Backend and integrations

StripeThird-party APIs and webhooksREST APIsPostgreSQL / MySQLJava · Spring BootRuby on RailsGitHub Actions / CI

AI in products

AI feature integration (HostBuddy AI)Prompt engineeringAI agents / MCPLLM evals

AI-assisted development

Claude CodeCursorGitHub CopilotAgentic coding workflowsAI code reviewAI-drafted specs and ticketsContext files (CLAUDE.md, Cursor rules)

Way of working

Tech specs / RFCsScoping with PMsAgile / ScrumJira and ticket writingFigma handoffCode reviewMentoring and onboardingFeature flags / staged rolloutsRemote, async across time zones