Nicolas Daudin

Référent technique de la plateforme de paiement fintech de SGW (marque blanche, multi-PSP) : ~7 000 paiements/jour, une dizaine de marchands, plusieurs M€ de volume/an. Au-delà de l'intégration PSP, je développe les fonctionnalités qu'impose la complexité du paiement (pré-autorisation et capture, cascading multi-PSP, retries, abonnements), dans un environnement produit très itératif et data-driven (A/B tests, feature flags). Au quotidien : • Cadre et développe les fonctionnalités de paiement de bout en bout (backend et frontend : Node.js, TypeScript, React, AWS Lambda, DynamoDB) • Intègre et teste les APIs PSP, fiabilise les flux de paiement • Sécurise les données sensibles (Skyflow), debugge et documente la plateforme • Onboarde et pilote une agence de devs externe (intégration PSP + QA) : cadrage, revue de code, validation • Collabore au quotidien avec le marchand, le CTO, le PO, la QA et un data scientist • Pilote mes livraisons en Agile (daily, Notion, feature flags) Réalisations clés : • Augmenté le taux d'autorisation de 5 % et divisé le VAMP ratio par 3 (litiges Visa) en optimisant le routage et les règles de paiement • Accéléré le rythme de livraison ×3 sur la dernière année en industrialisant un workflow de dev assisté par IA (Cursor, Claude Code) • Intégré 6 PSP (4 en production), avec routage de MID et failover • Livré 4 parcours 3DS/SCA + Apple Pay adaptés aux spécificités de chaque PSP • Automatisé le reporting des paiements (Slack × Snowflake × Claude) : suivi quotidien du CA, des remboursements et du taux de succès • Publié et maintenu une librairie React de formulaire de paiement Stack : Node.js · TypeScript · AWS Lambda · Amplify Gen2 · DynamoDB · SQS · React · REST/Webhooks · Postman · Jest · Sentry · GitLab CI/CD · Snowflake · Skyflow · 3DS/SCA · PSD2 · PCI DSS · Tokenization · IA (Cursor, Claude Code)

Développeur fullstack et associé de Pylote, plateforme de freelancing (extension Chrome côté freelances + SaaS côté recruteurs). Owner de l'extension Chrome (20 000+ utilisateurs) et contributeur du SaaS recruteurs (10–50 clients). Toujours associé de la société à ce jour. Au-delà du code, j'ai contribué aux décisions produit et business en lien avec le CTO et le CEO, notamment à l'évolution du modèle économique. Au quotidien : • Développe l'extension Chrome (dashboard freelance) et le SaaS recruteurs (NestJS, Next.js, React, Auth0) • Fais évoluer deux APIs (côté freelances et côté clients recruteurs) : extension des routes NestJS, restructuration, documentation • Développe le backend serverless (AWS Lambda, DynamoDB) : points d'entrée clients/Stripe et jobs (génération de CV, tracking…) • Mets en place et fais grandir la stratégie de tests front & back, partie de zéro • Documente l'API et les wikis internes Réalisations clés : • Mené la refonte V1→V2 de l'extension Chrome → ~-25 % de tickets bugs/support • Structuré un référentiel de 7 000+ compétences techniques (catégorisation, re-synchronisation des skills) • Mis en place la localisation géographique : 4 pays, 25+ régions, 100+ provinces, 5 000+ communes • Livré l'extraction automatique des infos LinkedIn et la génération de CV à la volée • Introduit la stratégie de tests (de zéro à la couverture des parcours critiques front & back) • Contribué à diversifier le modèle économique en lançant une 2e source de revenu (sponsoring) Stack : JavaScript · TypeScript · React · Redux · Next.js · Express · NestJS · REST API · Auth0 · AWS Lambda · API Gateway · DynamoDB · Airtable · Stripe · Segment · GitLab · Figma

DC Publishing aide les auteurs à s'auto-publier sur Amazon et leur propose divers services. Il s'agit d'une toute petite équipe et mon rôle a été clé pour accélérer le business de DC Publishing et l'acquisition de clients - Priorisation des features les plus urgentes et intéressantes - Digitalisation et automatisation de processus manuels - Diminution du temps consacré à chaque client de 90% (de 3h à 15 minutes) - Création d'un backoffice admin pour le client - Création d'une interface publique pour des auteurs auto-publiés, afin de les aider à mieux choisir les méta-données lors de la publication sur le programme Amazon KDP. - Interconnexion avec plusieurs APIs (Amazon Product Advertising, DataForSEO, Rainforest...) pour extraire des données nécessaires aussi bien aux auteurs qu'à mon client - Gestion du projet sous Github Project. - Choix techniques et architecturaux: Node.js, NestJS, TypeScript, Handlebars, Axios, Playwright, Heroku, GIT - CI/CD sous GIT et Heroku (avec serveurs de staging et de prod)

Self-training and side-project development in the following backend technologies : - JavaScript - TypeScript - Node.js - Express.js - MongoDB/Mongoose - Rest APIs / Postman - creation of APIs and consumption of third-party APIs (Google Adsense, Google Analytics, AWin, Tequila Kiwi, Twilio, ...) - JWT / Google OAuth2 - Web scraping (Phantom Buster, Playwright) - TDD - Clean Code - GIT - Heroku/Netlify - Webpack/Parcel/Babel/NPM - VSCode

I created and was fully in charge of website ABC Argent (abcargent.com), a website about personal finance and alternative ways to make money offline and offline. I was some kind of jack of all trades for ABC Argent, I was dealing with SEO, design, content, linking, partnerships, marketing, community management and social networks. In total, more than 250 posts have been published under my lead, for a total of more than 10 millions of visits, a community of 20000 people subscribed to my weekly newsletter and also some appearances on TV and digital newspapers: Rue89, Europe1, C8, Sud Radio. ABC Argent's strength : - it was #1 on many very competitive search queries on Google.fr, following a very strong organic SEO strategy and many free partnerships with other websites in the same domain. - ABC Argent's posts were deep and thorough, detailed, actionable, and shareable: time on site increased, posts were shared => very good indicators for Google.fr - Monetization has been strongly optimized as well, leading to a revenue up to 20 cts€ per visitor some months. My process: - At the very beginning of ABC Argent, I was the only one writing content and posts, publishing it, managing the community, optimizing the content and the partnerships. I was doing it all by myself - After a few years, I started delegating content production, edition and publication, to be able to focus mainly on SEO and monetization. After 6 years and more than 10 millions of visits, I decided to sell the site to take care of my new-born daughter and then go back to my first love: Web development.

I have been working for Buongiorno for 5 years as a Java/J2EE Senior Software Engineer. I have first taken part in the regional implementation of a Customer Acquisition Tool for Brazil, a web interface used by marketers and designers to build splash screen to get mobile users to subscribe to our product lists. Starting September 2010, i took charge of the analysis, specifications and implementation of the same platform but for Argentina. Part of my work was to understand the specificities of Argentina market with the team in Buenos Aires, and to adapt the implementation to those particular elements. I then talked to the different providers and partners and make the tool suitable with their own products, and took fully part in the release of the platform and the subsequent improvements. During that process, I had the opportunity to be a Scrum master for a few months, and even got to travel to Argentina to train our remote office on the Customer Acquisition Tool. I was then in charge of the exact same work, but for the Mexico platform. Analysing, specifying and implementing our Customer Acquisition Tool, but for the specificities of Mexico market. Starting 2013, as part of a global move inside the Tech team in the company, the Customer Acquisition Tool got developed from scratch and released on a global scale : each country platform (Argentina, Brazil, Mexico) soon became a simple regional leg of the platform and there was no more implementation tasks on my side. My role turned into one of helping the integration between Tech team in Madrid and with remote marketing teams in Argentina, Brazil and Mexico, which gave me the chance to spend a year in our office in Mexico to help local teams get a better hang at the different tools and configurations. I was missing some "action", since my daily job was becoming less and less operational, so I decided to leave the company.

Third Party Applicative Maintenance as a remote consultant for BNP Paribas Assurance offices in Paris. Solving production issues and improving the portfolio of Websites of BNP Paribas Assurance.

I was a consultant at AXEN Sprl and worked on 2 main projects: one at Thalys International, as a Java/J2EE Analyst/Developer, and one at You and The World, as a Flex/PHP Developer

Complete implementation of various features of a data administration Web application in PHP and Flex. Analysis, design and implementation of new modules Sharing and synchronization of my work with a team of 8 people Help to junior consultants inside my team Tools/Languages: Flex, PHP, MXML, ActionScript, MySQL.

Analysis, design and implementation of a new version of the exisiting Opalys application (Java application – Swing client deployed via JWS, connected to a Jboss application server) Data modelization using UML2 and server-code generation with AndroMDA Implementation of new modules (for example, a Statistics module) Usage of Agile method: analysis, design and development in an iterative process Follow-up of my own work – Total autonomy Training of junior consultants to the maintenance (defects and improvements). Tools/Languages: Java, Swing, Maven2, AndroMDA, Spring, Hibernate, Jboss, MySql