Freelancer profile translated to English.

Description

Intervention: scraping, development of specific modules, team reinforcement, or complete product design.

- Web Development: Front & Back

- **Algorithms & Data**: Design of algorithms & Real-time high-volume architectures (+10k events/sec)

- Web Scraping & Reverse Engineering:

• Data extraction (Node.js, Python) with anti-bot bypass (Datadome, Akamai, x-acf-sensor-data, Kasada, Cloudflare, Google Captcha)

• Web & mobile reverse engineering

• Browser emulation (Playwright, Puppeteer) with fingerprint management, high frequency with proxy & compute optimization

• Ability to scrape complex sites/apps (Amazon, Airbnb, Leboncoin, ebay, Booking, Seloger, Linkedin, Leroy Merlin, Darty, Fnac, Cdiscount, Castorama, SNCF, Trainline, Allocine, Indeed, Doctolib, La Redoute, Opodo, Expedia, ...)

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Fullstack Developer, Lead Developer, Tech Lead, CTO, CTPO, Scraping Expert (Shadow DOM, Scrapy python, 2Captcha, Appium), Antibot Bypass (Datadome, Akamai, x-acf-sensor-data, Kasada, Cloudflare, Google Captcha), Browserless (Playwright, Puppeteer, Selenium, Brightdata, ScrapingBee), Fingerprint (TLS Fingerprinting, JA3, JA4, TLS Client, Headless evasion), Proxy, Site and Mobile App Reverse Engineering, Front-end Developer (React, ReactJS, Angular, Material UI, Stripe, Ingenico), Software Architecture & IT Architecture, CI/CD (Gitlab, Github, Docker), Startup (MVP, POC), Language (JavaScript, TypeScript, Python, C++, VBA, Matlab, Node.js, NodeJS), Auth (JWT, OAuth2), API (REST, GraphQL), Databases (Elasticsearch, MongoDB, Redis, Cassandra DB, ScyllaDB, PostgreSQL, Kibana), Broker & Messaging (NATS, Kafka, RabbitMQ), GIS (Mapbox, Maplibre, Leaflet, Pelias, Google Maps, Pbf, GeoJSON, Turf, GTFS, ...), Technical Audit

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent
Spanish
Conversational

Workplace preferences

Can work on-site

Paris (up to 50km)

nricher
On Malt
Technical Support for Scraping
May 2025 - May 2025
Technical support to enable teams to perform web scraping on e-commerce sites protected by anti-bot solutions (DataDome, ...). Reverse engineering on apps/sites to optimize requests.

Data Extraction Python Web Scraping Data Scraping
Combigo (startup tech dans le domaine du voyage/transport)
CTO/CPO
January 2023 - March 2025 (2 years and 2 months)
Paris, France
• Definition and prioritization of the product/tech roadmap aligned with user needs and market opportunities
• Structuring a small team (developers, data scientists, designers): recruitment, mentoring, and code reviews
• Product Discovery: UX/UI workshops, interviews, and user testing, rapid prototyping to validate and refine solutions
• Product/technical monitoring and management by KPIs: Conversion rate, pricing performance, user friction, technical uptime, market opportunities,... (Tools: Kibana, Google Analytics, Sentry, Hotjar, Grafana, Prometheus)
• Microservices software architecture deployed on self-managed Kubernetes (cluster of 1000 CPUs in bare metal)
Product Discovery CTO Software Architecture CTO as a Service
Combigo
Lead FullStack Dev
June 2019 - April 2025 (5 years and 10 months)
Paris, France
• Scraping: development of +100 bots capable of scraping at high frequency (100 req/sec continuously) without using captcha solving services; bypassing anti-bots (DataDome, Cloudflare,...) via an internal solution, advanced reverse engineering on mobile applications and websites.
• Design of optimized routing algorithms for long-distance journeys with dynamic pricing (C++/Python)
• Development of a GIS data correlation and fusion algorithm: processing of +50 heterogeneous carrier databases (stops, stations, airports) to identify, correct, and unify inconsistencies through automated cross-referencing with external sources (wikidata, gmap, openstreetmap, overpass, pelias, ...)
• Backend: development of the website backend and back office, and the microservices architecture (Nodejs / Express / RabbitMQ / MongoDB / Elasticsearch / Redis / NATS / Stripe / Ingenico)
• Frontend: implementation of the new purchase funnel, creation of a complete customer back office (ReactJS, Mui, Stripe, Ingenico)
• POC Combigo Maps: creation of a prototype for public transport route calculation (GTFS feed) with a Raptor algorithm, including a web interface and its backend (Nodejs, ReactJS, Mui, Mapbox)
Node.js Mapbox React.js GIS MongoDB Web Scraping Python MVP Typescript JavaScript