Alexandre Delaunay

As a freelance developer, I support my clients in designing and building robust, scalable, and secure web applications, with a strong focus on backend development (Java Spring Boot, NestJS) and solid experience in frontend technologies (React, Angular). I cover the entire project lifecycle — from architecture to production — with a pragmatic approach focused on product value, performance, and long-term maintainability. ✔️ Development of scalable, high-performance applications ✔️ Fast and reliable delivery in agile environments ✔️ Strong autonomy: able to lead or contribute to complex projects, solo or within a team ✔️ Open to full remote missions – immediately available I work with teams looking for a technical, reliable, and solution-oriented profile, capable of delivering high-quality features quickly while keeping a product-driven mindset.

At Enedis, I work as a senior full-stack consultant on the development of Chutney, an open-source end-to-end test automation platform. It is used to validate critical systems responsible for collecting and transmitting energy consumption data from Linky smart meters, for both residential and business clients. • Designed and developed backend microservices using Java Spring Boot and Kotlin • Built a custom Kotlin DSL to write low-code test scenarios in a Given / When / Then format • Developed a web interface in Angular to manage test scenarios and view execution reports • Achieved a 95% reduction in manual testing through advanced automation • Integrated with distributed systems: Kafka, HTTP, Selenium, SSH, and others • Managed internal cloud environments using OpenStack: monitoring, deployment, and updates • Implemented CI/CD pipelines (Jenkins), monitoring dashboards (Grafana), and a modular architecture • Collaborated with 10 internal teams actively using the platform This project has strengthened my expertise in backend architecture, large-scale test automation, and technical interface design for critical infrastructure. Tech stack: • Backend: Java (Spring Boot), Kotlin • Frontend: Angular • DevOps: OpenStack, Terraform, Jenkins, Grafana

At Burger King France, I contributed to the technical overhaul of the high-traffic website and mobile app, addressing critical challenges related to performance, availability, and security for over 2 million daily users. • Developed new backend features for both public APIs and the internal back-office • Redesigned the core application architecture to improve scalability and resilience, reducing API response time by 25% • Optimized the internal back-office used to manage 560 restaurants across France, increasing the marketing team’s autonomy by 50% • Established secure development standards and best practices within an Azure Cloud environment This mission allowed me to work in a high-load production environment and sharpen my skills in performance-driven architecture for critical systems. Tech stack: • Backend: Java (Spring Boot), Freemarker • Database: AzureSQL • Cloud: Azure • Methodology: Agile, CI/CD

At Cardiweb, I contributed to several critical backend projects for major clients, operating under high constraints in terms of performance, resilience, system interoperability, and on-site user experience. Smart Office (L’Oréal, Microsoft, CNP) • Backend development using Java Spring Boot for Smart Office applications used by over 15,000 employees • Integration of a digital twin of the building to control equipment and automate comfort features (blinds, temperature, indoor navigation, etc.) • Technical foundation improvements: added configurable modules and enhanced system stability and maintainability France Billet (Fnac Spectacles) • Involved in the migration of France Billet’s information system following an acquisition, ensuring seamless interfacing between legacy and new systems • Developed robust and reliable middleware components to support system integration • Built the ticket validation module used at event entrances, with high availability requirements and heavy concurrent usage • Mixed tech stack: Java 6 for legacy components, Java 11 / Spring Boot for new modules Project Viper (Viparis) • Backend development using Java 11 / Spring Boot for a mobile app and web platform built from scratch, designed to manage incident reporting on exhibition stands during trade shows • Implemented full offline mode with automatic synchronization upon reconnection • Developed complex workflows for check-in/check-out reports, incident tracking, and real-time handling • Project carried out under strong business constraints (fast response times, field operations, traceability) These projects allowed me to build strong versatility in critical backend systems, combining technical leadership, business understanding, and operational reliability. Tech stack: • Backend: Spring Boot – Java 6 & Java 11 • Tools & DevOps: Docker, CI/CD, Git, Power BI • Methodology: Agile

Full-Stack Web Development Internship within an Agile team of 4 developers and a Product Owner. • Developed an intranet platform enabling information submission and online payments for an external client. • Tech stack: Angular (Frontend) / Java Spring Boot (Backend) / PostgreSQL (Database).