Jonathan Lalou
Senior Software Architect @Paymentus
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WORK HISTORY
Senior Software Architect @Paymentus
Paris, FR
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!
EDUCATION
Lycée Condorcet (CPGE)
Maths Sup (MPSI) / Math Spe (MP)
Lycee de l'Alliance
Baccalaureat S, Maths
Pierre and Marie Curie University
B.Sc., Mathematics, Computer Sciences, Physics
Ecole Nationale Supérieure des Mines de Nancy
M. Sc., Maths, Physics, Computer Sciences
SKILLS
ABOUT JONATHAN LALOU
Technical Leader | Software Architect | Agile Expert | Fractional CTO | AuthorI have a deep passion for project management, software architecture, and full-cycle development, from conception to industrialization. With a strong technical background and a strategic mindset, I thrive in agile environments (Lean, Scrum, XP, CI/CD) and technical leadership roles.Supporting Startups & Remote CollaborationI provide technical expertise and strategic support to startups, helping them scale efficiently and build high-performing engineering teams. My expertise includes: Technical leadership & hiring – Helping startups recruit top-tier developers Quick prototyping – Turning ideas into MVPs for stealth-mode projects Audits & assessments – Security, code quality, and technical due diligence Fractional CTO – Supporting young startups to ensure long-term scalability Always open to new challenges, collaborations, and opportunities! Reach me via Gmail (f••••••••@gmail.com) or Twitter (@John_the_cowboy). Technical Expertise: Programming Languages: Java (JEE)| Groovy | Kotlin | 🟢 Node.js (TypeScript)| Python Frameworks & Technologies: Backend: Spring Boot | Hibernate (JPA)| EJB | Struts Frontend: GWT | JSF (PrimeFaces, BootsFaces) Messaging: Apache Kafka | JMS | ActiveMQ | WebSphere MQ Caching: Oracle Coherence | EhCache Cloud: AWS | Google Cloud (GCP)| OpenShift Containerization: Docker | Kubernetes (k8s) Agile & DevOps: Lean | Scrum | XP | TDD Continuous Integration & Software Factory Databases & Tools: SQL: Oracle | Sybase | SnowFlake | MySQL | MariaDB | PostgreSQL NoSQL: MongoDB, DynamoDB Maven | Git/SVN | WebLogic | WebSphere | Tomcat | Mule ESB Looking for technical leadership, startup consulting, or collaboration opportunities? Let’s connect!
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