Freelancer profile translated to English.

Description

Hi, I'm Alexandre 👋

I'm a fullstack developer in Nice. For 4 years, I've been building web and SaaS products, from design to production, including code, infrastructure, and hosting.

My background is primarily entrepreneurial. I've founded several companies: Ontrace and Kops (two B2B SaaS in production), Devolab (web agency), and Upsky (trading). This experience has taught me to think about the product as a whole: infra costs, production stability, user experience, and everything that makes a project last.

My daily stack:

• Front: React, Next.js, Vue/Nuxt, TypeScript, Tailwind

• Back: Node.js, NestJS, Go, REST & WebSocket

• Data: PostgreSQL, Redis, MySQL

• Infra: Docker, CI/CD, self-hosted servers, multi-tenant

• Mobile/Desktop: React Native, Capacitor, PWA, Electron

What I'm looking for: long-term missions (3 months and up) on products where I can be useful across the entire stack, not just the front end. I work remotely, with occasional travel to the French Riviera possible.

Do you have a product to launch, grow, or take over? Write to me, let's talk about it.

Portfolio: alexvl.fr

GitHub: github.com/alexandre-vl

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent
Chinese
Basic

Workplace preferences

Can work on-site

Nice (up to 50km), Paris (up to 10km), Lille (up to 10km)

ReadyCook
Founder & Lead Fullstack Developer
DIGITAL AND IT
January 2024 - December 2024 (11 months)
Nice, France
Creator and sole developer of ReadyCook, the predecessor to Ontrace: an all-in-one CRM for Vinted resellers.

Objective: to replace the mess of Excel + 12 tabs with a single tool that manages the entire sales cycle, from stock addition to package shipping.

Features delivered:
• Stock and wardrobe management (stock organization + real-time tracking)
• Strategic publication scheduling with automatic republication
• Real-time order tracking with one-click shipping label download
• Multi-account and multi-user management
• Detailed financial reporting (revenue, margins, ROI per item)

Project built solo, from design to production deployment. ReadyCook served as the basis for evolving the concept into Ontrace.

Stack: Next.js, React, Go, PostgreSQL, Redis
PostgreSQL React.js Node.js Golang Redis
Ontrace
Founder & Lead Fullstack Developer
January 2024 - Today (2 years and 5 months)
Nice, France
Co-founder of Ontrace, a B2B SaaS for Vinted resellers that I built from scratch and continue to develop today.

My role: everything. Product strategy, design, code (front + back + real-time), infrastructure, production deployment, and operations.

What's under the hood:
• Real-time product feed with millisecond detection via WebSocket
• Autocop (automated purchasing) with custom anti-bot stack (TLS fingerprinting, fHTTP)
• Multi-tenant CRM with integrated messaging and sales stats
• Go backend for performance, Next.js / React frontend + Tailwind
• PostgreSQL + Redis for the data layer, Docker for self-hosted deployment

Stack: Next.js, React, TypeScript, Go, PostgreSQL, Redis, WebSocket, Docker
Docker React.js Node.js PostgreSQL Golang
Upsky
Co-founder & Developer
CONSULTING AND AUDITS
January 2023 - December 2023 (11 months)
Co-founder of Upsky, a crypto copy-trading platform that allows users to automatically replicate the strategies of pro traders.

On the technical side, we integrated directly with MetaTrader 5 for real-time order execution. The platform managed trader discovery, performance analytics, account security, and a subscription system for accessing premium strategies.

My role:
• Full-stack architecture (Vue.js front, Node.js back)
• MetaTrader 5 integration via REST APIs + WebSocket
• Real-time order replication system with slippage management
• Analytics dashboard with leaderboard and historical stats

The product was functional with a backend connected to live MT5 APIs, but the project was not commercially launched. Good experience with the constraints of financial real-time.

Stack: Vue.js, Node.js, MetaTrader 5, WebSocket, REST APIs
Node.js Vue.js Websocket REST APIs JavaScript