Adonis Xiao

Full-stack developer · Florina, Greece · Remote. Bookings, billing, waste haul, and real-time systems.

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Adonis Xiao Full Stack Developer Engineer portrait — Adonis XiaoFlorina

Desk

One machine. Three products.

The laptop pages itself. Stay, or open the folder that’s on screen.

01 · live · Sep 2025 – Jun 2026

Exeltiq

Multi-tenant CRM for gyms, clinics, and sports clubs in Cyprus. Primary builder. Greek + English. Paid Stripe plans.

Experience

Before the desk

2023 – 2025

Emerton

Senior Full-Stack Engineer (Contract), Remote

~7 business and startup clients. React / Next / TypeScript + FastAPI / Node. Auth, payments, APIs. Independent delivery.

2021 – 2022

ACLIT

Backend Developer (Contract), Remote

REST (Node, Express, Python). JWT/OAuth. PostgreSQL, MySQL, MongoDB. Swagger / Postman.

2020 – 2021

GMO Internet Group, Japan

Frontend Engineer

gmo.jp

React + TypeScript UI, reusable components, production frontend.

2018 – 2020

TechWave Solutions

Junior MERN Stack Developer

React, Node, Express, MongoDB. AWS EC2, PM2, Nginx.

2016 – 2020

Central South University, Changsha

B.S. Computer Science

Education.

About

One engineer owns the product.

Seven-plus years building production web apps — mostly inside founder-led teams where one engineer owns the product, the billing, and the 2 a.m. bug.

Recent work is two live Cyprus products built at Exeltive: Exeltiq (club CRM, Stripe, Twilio) and Wastelink (Association waste haul, Mapbox, Telnyx). Before that: Corva’s real-time stack, two years at Emerton across about seven clients, backend APIs at ACLIT, frontend production at GMO in Japan, and a MERN start at TechWave. Computer Science at Central South University, Changsha.

I care about state that does not drift — credits, jobs, bookings, hauls.

Next.jsReactTypeScriptFastAPIPythonNode.jsExpressPostgreSQLSupabaseMongoDBMySQLClerkStripeTwilioTelnyxMapboxOpenAI APIWebSocketsAWSDockerCI/CD

Contact

Florina, remote. Available for the next build.

adonisdev313@gmail.com Download resume

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