Freelancer profile translated to English.

Description

MVP Specialist, architecture redesign, scaling

I support ambitious startups, scale-ups, and SMEs in the design, redesign, or scalability of their digital solutions, with a strong focus on technical quality, product efficiency, and architectural sustainability.

Technical Expertise

Backend Development: PHP, TS, Rust
Scalable Architecture (docker, horizontal scaling)
Embedded Systems (c, linux, ucos)
External API Integration (PSP, third-party services, dashboards)
Advanced Monitoring Setup: Prometheus, Grafana

Project Management & Delivery

Agile Project Management (SCRUM, KANBAN)
MVP Creation from Scratch: scoping, roadmap, delivery, documentation
Legacy Architecture Redesign, Technical Debt Reduction
Management of multidisciplinary tech teams
OKR Setup and Tracking, Steering via JIRA, Trello, Notion

Product Vision & Strategy

Writing Specifications, User Stories, and Product Roadmaps
Coordination between Business Needs and Technical Choices
Supporting Founders / PMs in Structuring Decisions
Focus on Delivered Value, Market Alignment, and Technical Resilience

My Approach

One foot in strategy, the other in code.

I deliver quickly, cleanly, with robust foundations. My missions are impact-oriented, focusing on scalability and client autonomy.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km)

DeeWee SAS
CTO
RETAIL (SMALL BUSINESS)
May 2019 - Today (7 years and 1 month)
Cachan, France
Mission
Technical direction and digital strategy of a startup developing B2B/B2C loyalty, gift card, and marketplace solutions. Design of a proprietary system combining Rust/PHP backend, optimized MySQL database, and embedded software.

Key Technical Achievements
High-performance multithreaded engine (C → Rust): parallel processing of 10k+ PDFs, SMS/email campaigns, coupons, with priority queue, automatic restart, and error tolerance.
C / IoT Middleware: interfacing proprietary terminals with the backend via an embedded gateway (C on ucos).
Fuzzy Search in Database: development of C UDF functions integrated into MySQL for fault-tolerant search.
Multi-balance System: management of multiple balances (loyalty, prepaid, gift vouchers) on a single card, interoperable between merchants/associations.
Automated Billing: complete module (PDF generation, sending, reminders).

Optimization & Scalability :

Fine-grained relational database modeling
Real-time replication setup (redundancy)
Comprehensive monitoring via Prometheus + Grafana
Dockerization of services
Documented REST APIs + partner integration (PSP, aggregators, rights management, third-party services)

Methodology & Steering

Setup and facilitation of SCRUM / KANBAN methods
Steering of the product roadmap and technical vision
Writing user stories.
Recruitment and management of a multidisciplinary team
Response to public tenders.

Tools: JIRA, Trello, Notion, Draw.io

Stack :
Rust, C, PHP, TypeScript, Node.js, MySQL, Docker, Apache, HTML, CSS, JavaScript; Nginx, Grafana, Prometheus
MySQL Rust Docker PHP roadmap
DeeWee SAS
Head of Research and Development
November 2016 - Today (9 years and 7 months)
Mission
Design of a data capture device between cash registers and printers, combining embedded electronics, software reverse engineering, and real-time network communication.

Key Technical Achievements

Low-level Software Design (C, Linux) :

Passive capture of the flow between cash register and printer
Data reverse engineering to reconstruct commands + printed images
Multithreading and multi-protocol compatibility (USB, serial, LAN).
NFC badge reading.
Connected Infrastructure :
Link between devices and the remote backend
Update deployment
Remote control of devices deployed internationally (Australia, Guadeloupe)
Hardware and Software Coordination :
Validation of electronic schematics (PCB)
Collaboration with industrial suppliers for hardware assembly
Management of a multidisciplinary R&D team (developers, electronics engineers)
Client Relations & Industrialization :
Execution of POCs, custom functional adjustments
Technical client support & production support
Methodology & Steering
Agile organization
Tracking via Gantt charts, JIRA, Trello
Project roadmap adapted to industrialization and time-to-market
Technical Environment :

Linux, C, shell scripts, TCP socket, NFC, RS232, Ansible

Impact

Delivery of a complete hardware/software product, operational in production
Remote maintenance and monitoring without human intervention
International deployment with confirmed network robustness
Strengthening of client/supplier relationships through stable and modular delivery
Linux C hardware NFC Project Management
DeeWee SAS
Research and Development Intern
October 2016 - April 2017 (6 months)
Ivry-sur-Seine, France
Feasibility study for establishing communication between an embedded Linux system and an Android device.

Achievements

Comparative study of several inter-device communication protocols
Development in C
Development of a Java library for Android
Implementation of field tests on real equipment
Writing technical reports and implementation proposals

Environment: C, Linux, serial protocols, USB, Android

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Aodren Bary

CTO | Tech Lead

About Aodren

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