Freelancer profile translated to English.

Description

🟦Software Architect • Fintech • CTO-as-a-Service

👨‍💻 Entrepreneur and software architect with over10 years of experience**, I support companies, fintechs, and technical organizations in the **design, security, and scaling of critical digital platformswith high business value.

🎯 I work across the entire systems lifecycle: **architecture, development, infrastructure, compliance, operations, and product evolution**, with an approach focused on **performance, security, scalability, and ROI**.

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## 🚀 Core Expertise

🔹 Microservices architecture, high-availability APIs, and distributed systems

🔹 Development ofSaaS platforms, fintech solutions, and custom business tools

🔹 💳 Payments & fintech: KYC, wallets, IBAN, SEPA, AML-CFT compliance

🔹 ☁️ Cloud, hybrid, and on-premise infrastructures, CI/CD automation

🔹 🤖 AI integration and intelligent automation of business workflows

🔹 🔄 Migration, refactoring, and scaling of existing architectures

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## 💼 Global Value-Added Solutions

🔹 📄 Provision and integration ofprofessional software licenses

🔹 🖥️ Provision ofhardware and technical solutionsadapted to projects

🔹 📡 Deployment ofprofessional telecommunication solutions(voice, data, connectivity, convergence)

🔹 🧩 Strategic support:architecture, build, optimization, and operations

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⚡ Positioning: **Strategic Architecture, CTO-as-a-Service, creation or transformation of critical platforms**, with a pragmatic approach focused on results and business performance.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

Youseeme
Project Manager | Fullstack Developer | Architect
BANKING AND INSURANCE
January 2021 - Today (5 years and 5 months)
Paris, France
🎯 Context & Challenges

Fintech platform offering IBAN and SEPA payment services through complete Treezor integration, as well as a crypto platform. Overall technical responsibility: architecture, development, team management, and regulatory compliance.

⚙️ Strategic Responsibilities
Design of the microservices architecture and transactional backend
Complete Treezor API integration (KYC, wallets, IBAN, transfers, webhooks)
Development of the client area and back-office (accounts, transactions, operations)
Setup of the crypto platform (wallets, orders, history)
Management of a technical team (3 developers) and coordination with partners
Administration of dedicated VMware / Proxmox infrastructure
AML-CFT compliance, audit trails, and identity verification processes
📈 Results
Deployment of a complete banking platform integrated with Treezor
Industrialization of KYC processes and automated transactions
Scalable high-availability infrastructure
Node.js Symfony MongoDB Next.js API
ADDREA
President
DIGITAL AND IT
August 2016 - Today (9 years and 10 months)
La Rochelle, France
🎯 Context & Challenges

Leading and developing technical structures and digital products with complete responsibility: compliance, finance, architecture, and delivery.

⚙️ Strategic Responsibilities
Leadership in compliance, governance, and regulatory documentation
Financial management and pre-accounting (treasury, invoicing, cost optimization)
Negotiation with suppliers, partners, and strategic contracts
Design and development of complex technical platforms (microservices, APIs, CI/CD)
Secure cloud and on-premise architecture
📈 Results
Deployment of multiple SaaS and fintech platforms
Structuring of complete operational processes (finance, compliance, delivery)
End-to-end delivery capability in critical environments (fintech, security)
Project Management Accounting Legal Compliance Node.js
Bulls Motorsports
Fullstack Developer | Architect
TRANSPORTATION
August 2022 - February 2025 (2 years and 6 months)
Cesson-Sévigné, France
CONTEXT & CHALLENGES
Development of a comprehensive internal management solution for an engine remapping specialist. The application covers customer, vehicle, service, and invoicing management, with an AI assistant accessible via Telegram to facilitate daily team operations.

ACHIEVEMENTS
▸ Design and development of a complete business management software
▸ Decoupled architecture: Symfony/Bootstrap frontend + asynchronous Node.js engine
▸ Process engine: PDF generation, automated email sending, business workflows
▸ Integration of a Telegram bot with a conversational AI assistant
▸ Multi-LLM connection via LiteLLM (OpenAI, Anthropic, Mistral)
▸ Deployment and maintenance on VPS
Node.js Bootstrap Symfony MongoDB Telegram

Check out Grégoire's experience

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Signup to reveal

BTS SIO, Computer Engineering
Lycée Guy Chauvet
2015
BTS SIO, Ingénierie informatique
Professional Baccalaureate SEN, Computer Systems and Telecommunications Networking
Lycée progessionnel de rompsay
2013
Baccalauréat Progessionnel SEN, Mise en réseau de systèmes informatiques et télécommunications

Grégoire Berthomes

Tech Lead | Fullstack Architect | FinTech

About Grégoire

Experience

CONTEXT & CHALLENGES

ACHIEVEMENTS

▸ Design and development of a complete business management software

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