I build core products
for deep-tech startups

End-to-end product engineer • Firmware, backend, hardware, 3D, web

From circuit to cloud, I own the whole stack. I deliver the working product — firmware, real-time engines, business platforms, web apps — not just a piece of it.

Get in TouchView Experience
Available for full-time roles and consulting

About

I own the whole product

I don't specialize in one layer of the stack — I specialize in shipping the whole product. That means I can write the firmware, build the backend, ship the web app, and debug the hardware when something's wrong.

My work has directly contributed to multi-million dollar fundraising rounds at early-stage startups by delivering the core technology that moved the business forward.

Startups hire me when the roadmap is ambitious, the team is small, and the answer to "who is going to build this?" can't be "we'll hire someone eventually." Whatever the company needs to succeed, that's what I build.

"Senior engineer" isn't just about years — it's about ownership, range, and making the business work.

Core Capabilities

What I build

End-to-End Product Delivery

From circuit to cloud, I own the whole stack. Whatever the company needs to ship — firmware, backend, web, hardware — I deliver the working product, not just a piece of it.

Web Applications & APIs (Laravel/PHP)

Full web platforms on Laravel and PHP — MVC, MySQL, REST APIs, and a mixed JavaScript/TypeScript front-end. Business-critical apps shipped to real users.

Backend & Business Systems

ERP, CRM, and operational platforms built to scale. Database design, REST APIs, integrations, and the unglamorous plumbing that keeps a business running.

Embedded Systems & Firmware

Bare-metal firmware, RTOS, ARM Cortex. I2C, SPI, UART, CAN. Hardware bring-up and low-level debugging for production-grade devices.

3D, Real-Time & Performance

High-performance systems processing massive data sets in real time. Streaming pipelines, animation systems, and 3D engines for products that have to keep up.

Hardware & Circuit Design

Circuit design, schematics, prototyping. Sensor integration and analog/digital systems. From concept to production-ready hardware.

Technical Leadership

Architecture decisions, technical strategy, and cross-functional collaboration. Leading small, high-impact teams and aligning engineering with business outcomes.

Selected Work

Building products that matter

Alignment Products Inc

Firmware & Hardware Engineer

Mar 2024 – Present
Situation

Early-stage startup that needed to ship its core hardware product to validate the business.

Task

Take the product from prototype to investor-ready hardware and firmware.

Action

Owned the full hardware and firmware delivery: designed the electronic circuit, brought up the board, and developed the embedded firmware end-to-end.

Result

The product's technical validation directly supported the company's successful investment fundraising round.

CEmbedded FirmwareARM MicrocontrollersCircuit DesignHardware Bring-up
Direct impact on successful investment fundraising

Miris / Illuscio Inc

Technical Lead (previously Software Engineer)

Aug 2021 – Mar 2024
Situation

Need for a system that could handle massive 3D data sets in real time, with animation and streaming built in.

Task

Architect and deliver a high-performance, scalable real-time platform — and grow into leading the team that built it.

Action

Built a real-time point cloud processing engine, implemented animation and streaming systems, developed a VR module, and created an Unreal Engine plugin. Promoted to Technical Lead.

Result

The technology became a core differentiator, contributing to the company raising multiple millions of dollars in funding.

C++Real-time SystemsLarge-scale Point CloudsStreamingVRUnreal Engine (C++ Plugins)OpenGL
Technology became core differentiator → multi-million dollar funding rounds

FishTV

Software Developer

Sep 2018 – Aug 2021
Situation

A growing media business needed to modernize its internal operations and run large-scale fishing championships end-to-end.

Task

Build the web platforms that would run the business and the events.

Action

Designed and delivered business-critical platforms on Laravel and PHP — ERP and CRM systems for the company, plus a Championship Management (GC) system for fishing tournaments. Front-end was a mix of JavaScript and TypeScript on top of a MySQL backend and REST APIs.

Result

Replaced ad-hoc internal processes with a reliable operational backbone, improved event flow and reliability for championships, and contributed to profit growth.

PHPLaravelMySQLJavaScriptTypeScriptC#ERPCRMREST APIsSystem Integration
Operational backbone for the business + championship platform shipped to real users

Klein Sistemas Eletrônicos

Lead Software Developer

Jan 2007 – Jan 2018
Situation

A growing multidisciplinary company needed software and hardware built and delivered together, from internal tools to customer-facing products.

Task

Grow from a technical role into owning end-to-end delivery across hardware and software projects.

Action

Developed embedded and application software in PHP, Laravel, C++, and C#, while contributing to hardware projects including circuit design and system integration — bridging electronics and software requirements across multidisciplinary teams.

Result

Built a decade of end-to-end product delivery experience spanning firmware, application software, and hardware, laying the foundation for a career bridging embedded systems and full-stack development.

PHPLaravelC++C#Circuit DesignSystem IntegrationEmbedded Software
11 years of end-to-end delivery across hardware and software

Selected Patents

Ideas that became protected IP

Systems and methods for decompressing three-dimensional image data

US11893760B1 · Granted Feb 6, 2024

View patent

Systems and methods for compressing three-dimensional image data

US11710258B1 · Granted Jul 25, 2023

View patent

Systems and methods for augmented reality viewing based on directly mapped point cloud overlays

US11657586B1 · Granted May 23, 2023

View patent

Systems and methods for efficient rendering and processing of point clouds using textures

US11615578B1 · Granted Mar 28, 2023

View patent

Systems and methods for augmented reality viewing based on directly mapped point cloud overlays

US11538228B1 · Granted Dec 27, 2022

View patent

Projects

Real systems, rebuilt to share

A mix of production work and from-scratch rebuilds of ideas from NDA-protected projects — open-sourced where I could, written up as a case study where I couldn't.

2024–Present

ERP, CRM & POS for Breweries and Pubs

web

A proprietary ERP, CRM, and POS platform built for breweries and pubs — unifying operations, inventory, loyalty, production, fiscal compliance, payments, and IoT brewing into one system. Client work, not open-sourced.

  • Enabled a 12.5× increase in gross revenue while substantially cutting operational losses and waste
  • Real-time stock control, production tracking, and automated consumption reconciliation slashed inventory losses
  • Replaced fragmented manual processes as the single source of truth for daily operations and management
  • Built a loyalty ecosystem converting visitors into repeat customers
LaravelPHPVue.jsVuetify
2026

Persona Classifier

web

A from-scratch, synthetic-data reimplementation of the behavioral customer-scoring engine originally built for a brewery POS platform — scores customers against five personas with fully explainable, per-feature breakdowns.

  • Five behavioral personas scored through a transparent, weighted-rubric engine — no black box
  • Explainability as a first-class API: per-feature score contributions are public, not just the final label
  • Faker-generated synthetic dataset auto-seeds ~150–300 customers on first startup, so it runs standalone with no real data
FastAPIPythonVue 3PiniaSQLModelChart.jsDocker
GitHub Live demo
2026

Brewery Automation Firmware

firmware

Firmware running a real brewery's automated brew day end to end — PID temperature control, multi-vessel valve and pump sequencing, and recipe execution on an 8-bit PIC, bridged to the network over a hand-built JSON protocol.

  • PID-controlled temperature management across the Hot Liquor Tank and Boil Kettle via DS18B20 sensors
  • State-machine recipe execution coordinating three vessels, pumps, and valves through a full brew cycle
  • Hand-rolled JSON parser and UART field bootloader built for an 8-bit MCU's memory constraints
CPIC18F47K40MPLAB XXC8ESP8266PID ControlUART
GitHub
2026

Beer Style Classifier

web

A full-stack AI app that matches any beer to the official BJCP 2021 style guidelines — a two-stage pipeline grounds the beer in real web data, then a schema-validated LLM call classifies it with confidence and reasoning.

  • Two-stage pipeline: grounded web research feeds a structured-output LLM call classifying against 128 BJCP styles
  • Postgres-backed response cache and per-IP rate limiting keep repeated lookups cheap and abuse-resistant
  • Bilingual (PT/EN) searchable BJCP style directory with statically-regenerated pages
Next.js 16React 19TypeScriptPostgreSQLPrismaOpenAI APIDocker
GitHub Live demo

Technical Stack

Tools & technologies

Technologies I've used in production across firmware, real-time systems, 3D graphics, and full-stack development.

Full-Stack & Web

LaravelPHPMySQLJavaScriptTypeScriptVue / NuxtREST APIsMVCComposer

Embedded & Hardware

CC++Bare-metalRTOSARM CortexI2C/SPI/UART/CANFirmware ArchitectureHardware Bring-upCircuit DesignSchematicsPrototypingMicrocontrollersSensorsLow-level Debugging

Real-Time & Performance

Point Cloud ProcessingReal-time RenderingStreaming PipelinesAnimation SystemsMemory OptimizationMulti-threaded SystemsOpenGLPlugin Development

Systems & Tooling

PythonC#GitLinuxCI/CDSystem Architecture

Specialized: XR & Graphics

VulkanUnreal Engine (C++)

Education

Academic background

Bachelor's Degree in Computer Science

2005 – 2011

Universidade Feevale

Postgraduate Degree in Offensive Security & Cyber Intelligence

2019 – 2020

Universidade Feevale

Specialized training in offensive security methodologies and cyber intelligence operations.

Let's build something

Open to full-time roles and consulting engagements where I can own the product end-to-end — hardware, software, or web.

contact@alexandre.devLinkedIn

Open to:

  • • Technical leadership roles at early-stage to Series B companies
  • • Founding engineer or fractional CTO positions
  • • End-to-end product ownership opportunities (hardware, software, or web)