Skip to the record
John Ervin Ceriola

Lead Full Stack Engineer. I build web, mobile and AI products end to end, and lead the teams that ship them.

Now

Leading engineering at Primoro Limited (United Kingdom, remote) since Oct 2025. Open to select projects and consulting.

Email me about a projectLinkedInGitHub

Primoro Limited, Lead Full Stack Engineer, Oct 2025 – now

One ring per engagement since 2019, drawn to its dates. Tap a ring to open it in the record.

Record

8 engagements since 2019, drawn to one time scale. 2 are running now.

  1. Leading engineering on a UK dental-care SaaS: a patient mobile app, a clinic staff portal and an in-surgery tablet app. Every practice gets its own branded app from one codebase, with Azure AD sign-in, automated store builds and over-the-air releases.

    • React Native Expo
    • React
    • Nest.js
    • Azure AD
    • React Query
    • CI/CD
    See Primoro, Dental care platform in selected work

  2. Led mobile engineering for a logistics platform for a full year: serverless AWS backend and real-time shipment workflows. Delivered and handed over in July 2026.

    • React Native Expo
    • AWS Lambda
    • TypeScript
    • Serverless
    • NativeWind
    See Cargoos, Logistics platform in selected work

  3. Repaired and hardened agent automation pipelines that process Instagram content end to end.

    • Python
    • Instagram API
    • Agent workflows
    • Monday.com

  4. Built a flow-chart generator, user management and a knowledge-base app for a US debt-relief firm.

    • React
    • Pipedream
    • Google Sheets API
    • Auth

  5. Shipped a driver-management app with live GPS tracking for an Australian logistics fleet.

    • React Native
    • GPS
    • Real-time tracking
    See Proline, Fleet operations in selected work

  6. Led frontend work on Sony Pictures platforms: the Bravia Core web app and RideVue in-vehicle streaming.

    • React
    • AWS
    • MQTT
    • Agile
    See Sony Pictures, Bravia Core in selected work

  7. Built SME digital-banking portal features for one of the Philippines’ largest banks.

    • React
    • Ant Design
    • Scrum
    See Union Bank PH, SME portal in selected work

  8. 50+ launches for clients across the PH, AU, US and UK, from MVPs to production platforms.

    • React Native
    • Next.js
    • TypeScript
    • Firebase

Selected work

10 of 50+ launches, across healthtech, streaming, banking, logistics, web3, sports and marketing.

Healthtech

Current, since Oct 2025

Primoro Dental care platform

A white-label platform for UK dental practices: patient app, staff portal and surgery tablet app.

Three applications on one platform: a patient mobile app (React Native Expo), a clinic staff portal (React with Azure AD sign-in) and an in-surgery tablet app. Each practice gets its own branded app generated from the same codebase, with automated store builds and over-the-air updates, so one fix reaches every client at once.

  • React Native Expo
  • React
  • Nest.js
  • Azure
  • React Query
  • OTA releases

Private client system, no public link

Apps
3
Model
White-label
Role
Lead

Streaming

Feb 2022 – Jun 2024

Sony Pictures Bravia Core

Premium 4K streaming for Sony Bravia TVs and RideVue in-vehicle screens.

Two years leading frontend delivery inside Sony’s engineering organisation: video playback UX, device integration over MQTT, AWS-backed services and Agile at scale.

  • React
  • Next.js
  • AWS
  • MQTT
  • Video
sony.com
Audience
1M+
Uptime
99.9%
Tenure
2 yrs

Banking

Nov 2021 – Jan 2022

Union Bank PH SME portal

Digital banking portal for small and medium businesses.

Delivered secure account and transaction features with Ant Design on a Scrum cadence for one of the country’s biggest banks.

  • React
  • Ant Design
  • Security
unionbankph.com
Users
100K+
Transactions
50K+
Uptime
99.99%

More shipped work

  1. One year as lead: a React Native Expo app, AWS Lambda services and TypeScript end to end. Delivered and handed over in July 2026.

    Role
    Lead
    Stack
    AWS
    Term
    1 yr
    • React Native
    • AWS Lambda
    • Serverless
    • TypeScript

    Private client system, no public link

  2. Frontend engineering for a high-traffic play-to-earn platform: wallet flows, marketplace UI and live race views.

    Players
    50K+
    Volume
    $10M+
    NFTs
    100K+
    • Web3
    • React
    • Smart contracts
    pegaxy.io

  3. Built responsive booking and tracking flows in React Native and TypeScript for a national carrier.

    Shipments
    1M+
    Routes
    500+
    Market
    AU
    • React Native
    • TypeScript
    • Tailwind
    couriersandfreight.com.au

  4. Real-time vehicle telemetry, driver workflows and dispatch views for an Australian fleet operator.

    Vehicles
    500+
    Tracking
    Live
    Market
    AU
    • React Native
    • GPS
    • Django
    prolinelogistics.com.au

  5. A Gatsby and Ionic build on AWS services, powering registrations, fixtures and live results.

    Events
    500+
    Athletes
    10K+
    Countries
    15
    • Gatsby
    • Ionic
    • AWS
    tritagrugby.com

  6. Campaign tooling, analytics dashboards and SEO instruments on a React, Node and AWS stack.

    Campaigns
    1K+
    Clients
    200+
    Market
    UK
    • React
    • Node.js
    • AWS
    • Analytics
    clicksource.co.uk

  7. An Ionic and Angular front end over a Laravel API, showing live container status across 20+ ports.

    Containers
    50K+
    Ports
    20+
    Time saved
    60%
    • Ionic
    • Angular
    • Laravel
    easterndrayage.com

Skills

What I use in production, measured in years and shipped deployments, on the same time scale as the record.

React / Next.jsWeb front ends7 yrs40+ deploymentsExpert
React Native / ExpoMobile apps6 yrs20+ deploymentsExpert
TypeScriptEverywhere6 yrs35+ deploymentsExpert
Node.jsAPIs and services6 yrs25+ deploymentsAdvanced
AWS / ServerlessCloud infrastructure6 yrs25+ deploymentsAdvanced
AI / LLM integrationAgents, copilots, Python automation2 yrs8+ deploymentsAdvanced
Nest.jsBackend framework2 yrs5+ deploymentsAdvanced
AzureCloud infrastructure2 yrs5+ deploymentsAdvanced
UI / UX engineeringProduct design4 yrs20+ deploymentsProficient

Also in daily use

  • Tailwind
  • Framer Motion
  • GraphQL
  • PostgreSQL
  • MongoDB
  • Firebase
  • Stripe
  • Docker
  • CI/CD
  • Pipedream
  • Playwright
  • Jest
  • Figma
  • MQTT
  • WebSockets
  • Redux
  • Zustand
  • Prisma

Certifications

  • Project Management ProfessionalPMI
  • Agile MethodologyScrum Alliance
  • Six Sigma Yellow BeltIASSC
  • AWS CertifiedAmazon Web Services

134+ public repositories

Experiments, full platforms and everything between. Six worth opening:

  • GraphQL MERN Firebase

    Full-stack app wiring GraphQL through the MERN stack with Firebase auth.

    GraphQL / MongoDB / React / Firebase4

  • E-commerce Redux

    Storefront with Redux state, Stripe payments and Firebase.

    Redux / Stripe / Firebase4

  • SEO Blogging Platform

    SEO-first publishing platform on MERN and Next.js.

    Next.js / SEO / MongoDB3

  • Zero to Dev

    MERN and Next.js platform with AWS S3, SES, Route 53 and EC2.

    Next.js / AWS / Docker2

  • Phaser 3 Engine

    2D game experiments on the Phaser 3 and WebGL pipeline.

    Phaser 3 / WebGL / Canvas2

  • Vue Chat App

    Real-time chat on Vue and Quasar with socket transport.

    Vue / Quasar / Socket.io1

All 134+ repositories on GitHub

Let’s build the next one.

Have a project?

Send a short brief: what you’re building, your timeline and your budget. Replies usually land within a day.

Email me about a project

Hiring for a lead role?

LinkedIn has the full history, and email works just as well.

Open LinkedIn
johnervin.ceriola@outlook.com
Phone
+63 935 245 4485
Local time
Manila --:--, UTC+8
GitHub
StJohnErvin
Status
Open to select projects and consulting