Jonathan LALOU

🔧 Scaling & Automating a Card-Present Payment System to handle higher transaction volumes while maintaining performance & reliability. Ensured failure-resistant transactions in unstable internet environments, with dynamic microservice scaling. 🛠 Tech Stack & Development: ⚡ Node.js 14 (70%) / ☕ Java 16 (10%) / 🌀 Groovy 3 (5%) / 🛠 Kotlin 1.5 (5%) 📦 Docker / Docker-Compose for scalable deployments ☁ AWS for cloud infrastructure & dynamic scaling 🗄 Databases & Security: 🗂 Oracle DB / MongoDB (NoSQL) for resilient storage 🔐 HashiCorp Vault for secure credential management 🌍 Backend & Infrastructure: 🌿 Spring / SpringBoot 2.5 for microservices architecture 🔗 SOAP / REST / GraphQL web services 📌 Tools & CI/CD: 📖 Confluence / JIRA for agile project management 🔀 BitBucket / Git for version control ⚡ Maven 3.5 for build automation 🧪 JUnit 5 for test-driven development 🔥 Automating processes & scaling microservices for seamless, high-volume transactions!

🔧 Refactoring & Stabilization of a high-stakes payment application, initially built in "commando mode." Focused on enhancing stability, interconnecting multiple sources & targets, and ensuring seamless operations. 🛠 Tech Stack & Development: ⚡ Node.js (50%) / ☕ Java 16 (45%) / 🔍 Scala (5%, readonly) 📦 Docker / Docker-Compose for containerized deployment ☁ AWS (IAM, Lambda, S3, DynamoDB, etc.) 🗄 Databases & Messaging: 🗂 NoSQL for flexible data storage 🚀 Apache Kafka for event-driven architecture 🌍 Backend & Infrastructure: 🌿 SpringBoot 3 for modern microservices 🔗 gRPC / Protobuf for efficient service communication ⚙ Terraform for infrastructure as code 📌 Tools & CI/CD: 📖 Confluence / JIRA for documentation & task management 🔀 GitHub for version control ⚡ Gradle for build automation 🔥 From "commando mode" to enterprise-grade reliability!

🚀 From Scratch Development of a high-performance payment application in "commando" mode – fast-paced, demanding milestones, and a pragmatic approach to technical debt. 🛠 Tech Stack & Development: ⚡ Node.js 14 (80%) / ☕ Java 16 (15%) / 🦸 Kotlin (5%) 🔗 Microservices architecture 📦 Docker / Docker-Compose for containerized deployments 🗄 Databases: 🔵 Oracle DB & MongoDB for data persistence 🌍 Backend Frameworks & APIs: ⚡ Express.js for high-performance routing 🌿 SpringBoot 2.5 for Java services 🔑 HashiCorp Vault for secrets management 🔐 Okta IDP for authentication & identity management 🌐 REST APIs for communication 📌 Tools & CI/CD: 📖 Confluence / JIRA for documentation & project management 🔀 BitBucket / Git for version control 🔥 Rapid iteration, high stakes, and innovation-driven delivery!

🔧 Evolving maintenance of a highly complex billing platform, ensuring stability, performance, and continuous improvement. 🛠 Tech Stack & Development: ☕ Java 8 → 15, Kotlin 1.2 📦 Docker for containerized deployments 🧪 JUnit 5 for robust testing 📜 Struts framework 🗄 Oracle DB for data management 🎨 Templating & Frontend: 🖋 FreeMarker / Thymeleaf for dynamic content generation 🌿 Spring Ecosystem: Spring, SpringBoot 🌐 API & Web Services: SOAP, REST, GraphQL 📌 Tools & CI/CD: 📖 Confluence / JIRA for documentation & project management 🔀 BitBucket / Git for version control ⚙️ Maven for build automation 📱 Mobile Development: Android 🚀 Ensuring seamless operations & modernization of a critical billing infrastructure!

Part-time Developer – Project CyberRetail ⏳ ~20 hours per week (average) 🚀 Designed & developed an innovative application bringing Stock Exchange mechanisms to eRetailers, enabling merchants to leverage financial trading techniques for market monitoring, auto stock refilling, and dynamic pricing. 🎯 Agile & Collaboration: Fixed time & price model, Scrum, TDD. Worked remotely with a globally distributed team (FR/CA/US/IL/IN) across 4 time zones, with some travels between Europe & North America. ☁ Cloud & Infrastructure: AWS (ECS, S3, Glacier, RDS, CodeStart), Docker. 🛠 Architecture & Development: Backend (Java 8 - 60%, Groovy 2.5 - 30%, Kotlin 1.2 - 10%) with additional work in Scala & JavaScript. 💡 Spring Ecosystem: SpringBoot, SpringCore 5.0, SpringData 2.0, SpringBatch 4.0, SpringSecurity 3.2, SpringWeb 5.0 (MVC & WebFlow 2.5), Guava 25. 📡 REST & API Integrations: JSON REST services, rule engines, BPM. 🔍 Testing & Quality: ✅ JUnit 5 "Jupiter", Selenium 3.4, full multi-layered test strategy (Unit, Runtime, Integration, Stress, GUI). ✅ CI/CD & DevOps: GitHub, Jenkins, SonarQube, Atlassian Suite (JIRA, Confluence). 🗄 Databases & Application Servers: JPA 2 / Hibernate 4.3, Amazon DB, Tomcat 9. 🔗 External API Integrations: 💰 Finance: European Central Bank, Federal Reserve, Bank of Canada, BoE, Zinc.io, Fixer.io, OpenExchangeRates.org. 🛒 Retail: AmazonCommerce, WalmartLabs, eBay, PrestaShop. 📩 Other: Bitly, SendGrid, Braintree 2.73 / PayPal, OAuth 1 & 2 (Google, Twitter, LinkedIn, Facebook, GitHub). 🕷 Web Scraping tools for competitor analysis. 🖥 Tech Stack & Tools: IntelliJ IDEA 2018, Maven 3.5. ✨ A high-impact project blending finance & e-commerce innovation!

Part-time Developer – Project "Insure 2025" ⏳ ~25 hours per week (average) 🚀 Prototyped "Insure 2025," a visionary insurance platform designed to reimagine insurance from scratch. Operated in a fixed time & price model with a fast-paced, innovation-driven approach. Worked remotely with frequent travels across Europe & North America. 🎯 Agile & DevOps: Scrum, XP, Kanban, Lean, CI/CD, DevOps. ☁ Cloud & Infrastructure: OpenShift v2, AWS (EC2, S3, RDS, CodeStart), Google Compute Engine, Docker. 📊 Big Data & Scalable Systems: High-performance architecture & development. 🛠 Tech Stack: Java 7, Groovy 2.4, SpringCore 4.3, SpringData 1.7, SpringBatch 3.0, SpringSecurity 3.2, SpringWeb 4.3, SpringMVC 4.0, SpringWebFlow 2.4, REST Services, Guava 20, JSF 2.2, Primefaces 5.2, Omnifaces 1.12, Bootstrap 3.3. 🔍 Build, Testing & Quality: Maven 3.2, JUnit 4.12, Selenium 3.4, Sonar. Maintained >85% test coverage and kept technical debt below 1.34%. 🗄 Databases & APIs: JPA 2 / Hibernate 4.3, MySQL / MariaDB / Amazon DB. Integrated with APIs such as European Central Bank, SendGrid, Mangopay 1.1, OAuth (Google, Twitter, LinkedIn). 🚀 Application Servers & Tools: Jetty 9.3, IntelliJ IDEA 2015-2017. ⚡ Extreme Development Constraints: Ultra-fast release cycles (24h from spec update to production). Maintained top-tier code quality with Sonar-measured technical debt <2% (actual <1.34% 😎).

⏳ ~25 hours per week (average) 🔑Key Responsibilities & Achievements 🎯 Project Overview * Developed Gomex, a specialized application for niche market insurers (e.g., taxi, professional footballers) and small brokers. * Enabled insurers to analyze 100k-line datasets, extract 7 key risk indicators, and negotiate better rates with reinsurance companies (Munich Re, Hannover Re, Scor, etc.). * Built a basic front-end for parameterization, visualization, and simulation. ⚙ Technical Expertise * Quick prototyping, architecture, and full-stack development. * Java 7, SpringBoot 1.2, SpringCore 4.0, SpringData 1.6, SpringLoaded 1.2, SpringIntegration 4.1, SpringBatch 3.0. * Database & ORM: Oracle 11, JPA 2 / Hibernate 4.2, DBUnit. * Frontend: JSF 2.2 / Primefaces 5.1. * CI/CD & Version Control: Git / GitHub, Jenkins. * Build & Testing: Maven 3.1, JUnit 4.12.

Key Responsibilities & Achievements 1️⃣ Leader of Fixed-Price Activity 🎯 Led pre-sales efforts and managed the direction of multiple fixed-price projects, ensuring successful delivery and client satisfaction. 🎯 Won and directed multiple projects, including: 🥇Centre Inffo: Managed a referential training system with a team of 6 developers, 1 Scrum Master, 1 Product Owner, and 1 Architect. 🥈SGCIB: Led a service center with 1 local leader and 4 developers, optimizing workflows and delivery. 🥉ePaye: Directed a geographically split project across multiple teams (team size undisclosed). 🎯 Applied expertise in project management, team leadership, problem-solving, conflict resolution, pre-sales, client interactions, onboarding, and mentoring. 2️⃣ Leader of the Circle of Experts 🎯 Provided high-level technical expertise and consulting to multiple clients, including Centre Inffo, Oseo / BPI France, ePaye, SVP Groupe, GMF, and others. 3️⃣ Leader of External Training 🎯 Designed and delivered technical training programs for major clients, ensuring upskilling in key technologies and methodologies. 🎯 Among key training clients: BNP-Paribas (GECD, BP2S), SGCIB, Centre Inffo, ePaye, GMF, Orange (Etrali, GlobeCast), Opsone, Direct Energie, and more. 4️⃣ Agile Coach for Contractors & Service Centers 🎯 Provided Agile coaching and methodology guidance to multiple organizations, enhancing their Scrum, Lean, and DevOps practices. 🎯 Among key clients: Etrali (Orange Group), GMF, Centre Inffo, SGCIB, InVS, and others. Core Skills & Expertise: ✅ Project Management & Leadership: Fixed-price project management, team leadership, strategic planning ✅ Agile & Coaching: Agile methodologies, Scrum, Lean, DevOps, mentoring ✅ Technical Consulting: Architecture, development, problem-solving, conflict resolution ✅ Training & Knowledge Sharing: Technical training, upskilling programs, client enablement

(8 days) For e-Paye Groupe SVP Audit of an application in SaaS mode: * interview of stake holders * analysis of code and documentation * conclusions and recommendations

(12 days) For Groupe GMF * Technical audit and study of a project "from scratch" on which 4 developpers work * IBM JDK 6, WebSphere (WAS 8), Ivy+Ant, JSF 2 + RichFaces, RAD / IntelliJ IDEA 12 Leda

(3 month / internal project) * Manager of a project of automatization of skill testing * Skills: Java 7, Hibernate 3 / JPA, Spring 3.5, MySQL, Spring MVC, IntelliJ IDEA 13 (Cardea) EAP

(4 days) For Centre Inffo * Fixed structural issues that development team could not fix in proprietary ESB * reverse engineering, JVM optimization * Linux Ubuntu 12.04, bash, Oracle JDK 6, proprietary ESB, advanced Maven + plugins (Assembly, Compiler), Eclipse Juno / IntelliJ IDEA 12 Leda

(1 month / internal project) * Manager of a project of consultants' skill management. * Skills: Java 7, Mule ESB 3.3, Hibernate 3 / JPA, Spring 3.5, MySQL, JSF 2, IntelliJ IDEA 12 (Leda) EAP

(4.5 days) For Centre Inffo * Audit of the application Dokelio as a Java expert. * Fixed transverse technical pending issues * Open Java 6, Tomcat 6, Hibernate 3, Spring 3, Maven 2.2, JEEM, JVM tuning

(1 day) For Centre Inffo * Audit of the application Mercury as a Java expert. * Fixed the pending issues * Java 5, JSP, E-Deal, Ant