WILLIAM LALIS

Embedded Systems & IoT Engineer | Python | C/C++

French & EU citizen • Open to relocation or remote

Hamburg, Germany
lalis.william@gmail.com
+33 7 69 65 24 10

PROFILE

French embedded systems engineer with a solid background in C/C++, Python, and IoT development. Passionate about building software and hardware interfaces, with professional experience in firmware development, API integration, and prototyping. Looking for a full-time opportunity in Hamburg (or remote) within a company that develops and markets SaaS products, to grow both technically and strategically.

PROFESSIONAL EXPERIENCE

Consultant - Technicatome

2025 - Present | Developer

Project 1 - Secure Binary Signing API (Autonomous, project owner)

  • Designed and developed a Flask-based API for binary signing using a Hardware Security Module (HSM) and PKCS#11
  • Built a secure SQL database and deployed the solution in a closed, secure network
  • Proposed and implemented system architecture using Nginx, Gunicorn, and Flask
  • Produced full technical documentation for deployment and maintenance

Project 2 - PyQt Graphical Interface for Actuator Module Testing (Autonomous, project owner)

  • Developed a PyQt application for actuator module acceptance testing
  • Implemented Modbus protocol for broadcast/unicast command sending
  • Designed a manual frame editing interface for advanced control operations

Consultant - Technicatome

2024 - Coordination & Customer Service Management

  • Coordinated after-sales support operations: ticket tracking, intervention prioritization, and processing time optimization
  • Managed client and supplier relationships to ensure proper resolution of after-sales service cases
  • Monitored repairs and supplier interventions through case closure

Freelance Developer

2023 - Present

  • Built SaaS-oriented Telegram bots for automation, subscription management, and API-based services
  • Developed crypto trading tools (Solana, Helius API) for token monitoring and automated sniping
  • Delivered custom Python automation scripts and scraping solutions for clients

R&D&I Engineer - SYMPHONY 3D

2023 - 2024 | Full-time

  • Led end-to-end development of embedded IoT solutions, from hardware integration to firmware deployment (ESP32, FreeRTOS)
  • Designed and deployed reliable server communication protocols for remote 3D printer control
  • Engineered a novel proof-of-concept for jetting-based 3D printing, enabling micro-precision material deposition
  • Built robust pipelines for sensor data acquisition and preprocessing to train custom deep learning models (PyTorch)

R&D Engineer Intern - SENSIVIC

2022

  • Developed real-time embedded firmware for high-frequency acoustic detection systems using ESP32 and C++

Other Work Experience

Bar Assistant - Local Bar-Tabac

June 2021 - Dec 2021

  • Managed bar operations, including drink preparation and service
  • Welcomed and seated customers, ensuring a positive guest experience
  • Maintained cleanliness and organization of the bar area
  • Handled customer payments and transactions

Sales & Repair Assistant - La Cordonnerie

Summer 2019 & Summer 2020

  • Performed shoe and leather goods repairs (stitching, sole replacement, handbag restoration)
  • Provided key duplication services with precision and quality control
  • Managed supplier orders and inventory follow-up
  • Welcomed and assisted customers, ensuring personalized service and issue resolution

Seasonal Worker - Swimming Pool Staff

Summer 2018

SKILLS

Embedded Systems & IoT

  • ESP32/ESP-IDF, Raspberry Pi, Arduino
  • FreeRTOS, Real-time systems
  • LoRa, Wi-Fi, BLE protocols
  • I2C, SPI, UART communication
  • Low-power optimization

Programming

  • C/C++ (Embedded & Desktop)
  • Python (Flask, PyQt, Automation)
  • JavaScript/TypeScript (Node.js)
  • SQL, Database design
  • Git, Docker, CI/CD

Web & Servers

  • Flask, RESTful APIs
  • Nginx, Gunicorn deployment
  • Linux server administration
  • Web scraping (Selenium, BeautifulSoup)
  • MQTT, WebSocket protocols

CAD & Tools

  • Fusion 360 (3D modeling)
  • EasyEDA (PCB design)
  • 3D printing maintenance
  • Oscilloscope, Multimeter
  • Virtual environments, Testing

EDUCATION

Master of Science - Internet of Things (Data Science)

École de l'IoT - Orléans, France

2023

Engineering Degree - Physical Engineering & Embedded Systems

Polytech Orléans - France

2023

Erasmus+ - Computer Science

UniversitĂ  degli Studi dell'Aquila - Italy

2022

CPGE - Classe Prépa PC*

Lycée Victor Hugo - Caen, France

2020

French Baccalauréat - Physics & Chemistry, Music (Honors)

Lycée Guillaume le Conquérant - France

2017

Music study certificate

Music Academy - Lillebonne, France

2016

Piano option