Nicolas Kahn Email & Phone Number

Paris, Île-De-France, France

Development of Rnest, an innovative search engine that enables to master a context in order to make an informed decision.- Do not rely on outdated knowledge: the world is changing very quickly and experts are quickly depreciated.- Do not lock yourself in what you currently know: favor a questioning thanks to a broad 360-degree vision.Rnest extracts and makes available an average of 2,500 relevant results per search and selects 50 must-reads.It consists of several modules.+ A search creation wizard to help users create robust search strategies (grid terms on multiple domains and qualified list of trusted web sites on multiple topics).+ A custom web crawler that evaluates each page visited based on the user's specific query (without relying on globally indexed pages like traditional search engines).+ A post-processing pipeline to filter and rank the results and extract some knowledge (learned terms and named entities).+ A portal to view your search results and filter them by keywords, publication date, document type or relevance score.Technical stack: React.js, Meteor.js, Python, NLP (spaCy, pandas), MongoDB, SQLite, Docker.

Paris Area, France

+ Development of a customized topical focused crawler able to efficiently identify high potential links and locate highly relevant target pages. - It is based on link and page scoring algorithms, and on a crawling strategy that balances exploration (finding new relevant content) and exploitation (visiting pages directly linked to relevant pages). - It is associated with a post-processing pipeline that deduplicates content and performs information extraction (named entity recognition and relationship extraction).+ Custom DataViz that presents the anticipation of upcoming changes in the prostate cancer treatment pathway. A back-end was built to directly retrieve articles from PubMed API (the U.S. National Library of Medicine) that are then categorized and scored using a machine learning pipeline. Results are displayed in the front-end offering both trend charts and a complete database of categorized articles.+ Prototyping of data-centric digital tools for partners.Streamline development workflow: update and unify the technical stack, setup best practices (GitFlows, automated tests, staging environment), migrate all services on a common platform.Web application stack: React.js, Meteor.js, D3.js, MongoDB, Nginx, Docker.Web crawler stack: Python, Scrapy (Crawler), Beautiful Soup (HTML parsing), spaCy (NLP), SQLite, Docker.

Paris Area, France

CitéGreen encourages and rewards people for using sustainable transport (walking, cycling and public transport). Move, Play, Win!★ Product Development• Selection of initial technologies and hosting solution. Monitoring and upgrade of the platform to support business development.• Creation of a web platform integrating multiple elements: - API connectors to automatically retrieve information about activities from partners (distance, duration, number of steps, etc.) - Gamification module to manage points, rankings, achievements and badges. - Challenge module to create unique experiences for special events created with sponsors. - Rewards module to display discounts and gifts that can be ordered by redeeming credits. - Complete back-end to manage all components (users, actions, rewards, gamification, etc.)★ IT management• Recruitment and management of 3 developers• Implementation of Scrum methodology and development best practices (GitFlow, Unit and Functional Testing, Code Reviews, etc.).• Board member taking part in all strategic decisions and acting as technical referent for investors.★ Results✔ Creation of a base of 85K end-users with a monthly activity rate of 60%✔ Fundraising of 650K€ (JCDecaux Holding and BPI France Large Ventures) ✔ Paris Innovation Grand prize 2013: best innovating serviceTechnical stack: Yii (PHP5), MySQL, PHPUnit, Behat.

Paris Area, France

Back-end of Microsoft music service (Zune) available on multiple platforms (PC client, Web, Xbox, Windows Phone 7). - Functional specification writing (service API, media delivery, reporting, subscription systems, music recognition application) - Project management (cross-group collaboration with teams based both in Paris and Redmond)

Paris Area, France

Design and development of a new advertising platform specialized in delivering ads on mobile phones.- Design of a complete architecture that is robust, efficient and scalable in order to handle heavy traffic while maintaining low response times.- Implementation of targeting solutions: handset capability to serve ads to specific handsets or to devices with specific capabilities, country/carrier targeting.- Prototyping of new ad selection algorithms to optimize ads delivery.Consulting to support the development of Microsoft’s mobile advertising platform, after ScreenTonic was acquired by Microsoft in May 2007.

Luxembourg

Development of value added services and technological monitoring in the area of mobile services.- SMS gateway enabling the sending and receiving of SMS messages (Mail-to-SMS, SMS-to-Mail, SOAP and HTTP API).- Interactive SMS applications (quiz, vote, news).- Application managing Over The Air configuration of mobile devices for LUXGSM network.Development of a client to connect to the Luxemburgish mobile number portability platform (SOAP web services) and manage incoming/outgoing requests.