Marcello Jardim: Full-Stack Developer

About

Full-stack and IoT engineer with four years of experience, taking features from requirements to production across mobile, web, cloud and smart devices. Over 20,000 people use the apps I’ve built.

UI UX

Frontend

Backend

Data

Cloud

IoT

Testing

CI/CD

Full stack

Education background

Experience

One company, every layer.

Jul 2022 → Jul 2026

Johannesburg

Team of nine

Full Stack Developer at Fluss

Four years at Fluss, a startup building smart gate controllers. I built the APIs and databases on AWS, the apps people tap every day on Android and iOS, and the firmware wherever the product needed it, and ran my projects from backlog to release.

Tech skills

The toolkit.

Languages

TypeScript
JavaScript
Python
C++
Kotlin
Swift

Frontend & mobile

Vue
React
Capacitor
Tailwind
Bootstrap

Cloud & data

AWS
SST
DynamoDB
Cognito
IoT Core
SNS
MQTT

Hardware

ESP32
Bluetooth LE
Wi-Fi
Sigfox
Platform.io
FDT

AI & voice

Claude Code
Vapi
ElevenLabs
Twilio

Delivery

Git
CI/CD
Figma

Plan
Requirements in, a clear plan out.
- Epics broken into tickets and planned into sprints
- Acceptance criteria agreed before any code is written
- One pipeline every feature follows, from backlog to release
Design
Drawn in Figma, then built as drawn.
- User flows and screens for mobile and web
- Figma designs turned straight into production code
Build
Every layer, by one engineer.
- Android and iOS apps
- Web apps and dashboards
- Serverless back ends on AWS
- The software inside smart devices
Test
Proved before it ships.
- Unit and end-to-end tests
- Developer testing, then QA and user acceptance
- Business sign-off before anything goes live
Ship
Releases are routine, not events.
- CI/CD pipelines that build and deploy
- App Store, Google Play and Huawei AppGallery
- A release announcement once it’s live

Projects

6 projects, firmware to interface. Open any for the full case study.

2022 → 2026

Smart Gate App

The remote, retired.

An access-control app that replaces the gate remote. Open gates, doors, garages and smart appliances over Bluetooth when you are close, or over Wi-Fi from anywhere. Shipped as Fluss+ and as Gemlink, a white-label version.

Fluss+ users: 10 000
Gemlink users: 10 000

Full stack & firmware

2023

TouchShare

A business card that answers back.

A digital business card that lives behind a physical one. Tap the NFC chip or scan the printed QR and your full profile opens: numbers, email, socials.

Full stack

2024 → 2025

Intercom System

An intercom that’s just a QR code.

A video intercom in Fluss+. Guests scan a board at the gate and call from the browser; residents answer in the app, see them, talk and let them in.

Full stack, team of three

2025

UPS Monitor

Batteries that tell you before they fail.

Real-time monitoring for a power-supply company’s UPS fleet: ESP32 firmware at every unit, live battery stats, instant fault alerts, and reports on how every unit is holding up.

UPS devices monitored live: 150+

Full stack & firmware

2026

Home Assistant

Smart gates, built into Home Assistant.

An official Home Assistant integration for Fluss+: every device becomes a button, and gates with a sensor open, close and report their state.

Integration & code owner

2026

Support automation

A help centre, and a phone line that has read it.

The Fluss+ help centre and an AI voice agent that answers from it. Articles people, search engines and LLMs all read properly, drafted with Claude Code; and a voice agent on the phone or the web that answers from the same pages.

Automation & AI integration

MarcelloJardim