Freelancer profile translated to English.
Back to original languageAbout Kangni Juvanio
Full-Stack Developer | React.js · Next.js · Laravel · AWS
I design and develop modern, high-performance, and scalable web applications, from showcases to back-offices, including complex CRMs.
My experience covers e-commerce projects, SaaS platforms, and custom CRMs, integrating authentication, role management, REST APIs, sales tracking, and automations (emails, chat, Google & AI integrations).
🚀 Recent achievements include:
Developing possible.africa, a comprehensive directory listing African tech organizations, events, and startups (React.js, Express.js, AWS).
Creating Pyramid Africa, a complete CRM (lead pipelines, Gmail/Calendar integrations, AI for emails, Speech-to-Text, landing page builder).
Redesigning the Tarzan Mall e-commerce site (Laravel, Livewire, Bootstrap) and the company's restaurant site in Next.js + MySQL for greater flexibility and scalability.
⚙️ Key technical skills:
React.js · Next.js · Redux · Laravel · Livewire · Node.js · Express.js · MySQL · REST API · Refine · Ant Design · Chakra UI · AWS (IAM, EC2, LightSail, CLI, Security) · Nginx · WordPress · WooCommerce · Bootstrap
✨ What I bring:
A full-stack approach (front, back, API, server)
A strong ability to adapt and learn quickly
A results orientation with on-time deliveries
A concrete experience of agile teamwork
📩 Available for your web projects: whether to create, improve, or scale your applications.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Expand In AfricaFullstack Developer & CTOCONSULTING AND AUDITSOctober 2023 - July 2025 (1 year and 9 months)Lyon, FranceI first developed possible.africa, a vast directory listing articles related to African tech as well as associated companies. The goal: to build a comprehensive database of organizations in various sectors (financial services, media, communication, telecoms).The project is structured in three parts: a front-office for display, a back-office for data management, and an API to link the two, managing authentication and information integration. This facilitates the creation and display of articles and organizations. I strengthened my skills with React.js, Express.js, Redux, Refine.dev, Ant Design, Chakra UI, AWS IAM, AWS EC2 and the Asana API for task management.I then developed a complex CRM, Pyramid Africa, with tracking of leads and deals spread across multiple pipelines. The platform enables complete management of customers and activities (calls, meetings, tasks, reminders, interactions via email, WhatsApp and LinkedIn). It integrates Google APIs for simplified authentication, access to Gmail and Google Calendar, as well as advanced features: Speech-to-Text, email generation with AI, landing page builder, and integration with possible.africa for lead generation.The V1 of Pyramid Africa is already in production. I am continuing this adventure with Expand in Africa as CTO, constantly exploring new technologies to meet market needs.Key skills: Full-stack development · REST API development · React.js · Express.js · Laravel · Livewire · Refine · Ant Design · Chakra UI · Bubble.io · Airtable · Drupal · WordPress · Bootstrap · Linux/VPS server administration · AWS (IAM, EC2, CLI, security) · Nginx · Web hosting · Technical documentation · Teamwork.
- PANDOREFullstack DeveloperSOFTWARE PUBLISHINGApril 2023 - October 2023 (6 months)Lomé, TogoI started by redesigning the company's showcase site, in collaboration with my lead, with WordPress 6. This experience allowed me to strengthen my skills in content management and theme customization.I then participated in the development of possible.africa (www.possible.africa), a platform composed of a front-office, a back-office and an API linking the two to manage data and functionalities (authentication, storage). This database lists organizations, events, articles, podcasts, funding and job offers in Africa. I worked on the back-office (Dashboard) for the creation and management of these elements, while the front-office managed the display. This project allowed me to improve my skills with React.js, Express.js, Redux, Refine.dev, Ant Design, Chakra UI, AWS IAM, AWS EC2, as well as with task management via Asana and its API.I also contributed to the SUNU-BICIS site (www.sunubicis.com), where I developed the majority of the pages and configured a large part of the back-office in Drupal 10 and Bootstrap 5.This second experience in the company taught me much more than technical skills: teamwork, professional behaviors, participation in enriching events and development of an inspiring network.
- Tarzan Express & Love Africa & Ely DesignFullstack DeveloperE-COMMERCEOctober 2022 - March 2023 (5 months)Lomé, TogoI started by working on the back-office of the e-commerce application Tarzan Mall, where I designed and implemented key features: creation, update and deletion of user data, role management, sending/receiving emails, and setting up an integrated chat. I used Laravel, Livewire, Popper.js, Select2 and Bootstrap 5 to carry out this project.I then took charge of the company's restaurant WordPress site. I made major changes to ensure rigorous tracking of sales, supplies and stocks, integrating WooCommerce and Xprinter for printing.Subsequently, I completely rebuilt the restaurant site with more suitable and scalable technologies: React.js, Next.js, MySQL, with TypeORM, Redux, Vercel and AWS LightSail. This redesign has provided more flexibility, performance and scalability.This experience allowed me to strengthen my understanding of agile methods, improve my teamwork, and highlight my personal strengths: adaptability, rapid learning and resourcefulness. These qualities allowed me to respond effectively to requirements and deliver projects on time.
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Education
- Web & Mobile DeveloperSimplon.co2022🎯 Formation : Développeur Web & Web Mobile – Simplon.co Objectif : Acquérir les compétences nécessaires pour concevoir, développer et maintenir des applications web et web mobile modernes, sécurisées et évolutives. Titre professionnel reconnu par l’État (RNCP – Bac+2). 📚 Contenu de la formation Phase 1 – Maquettage d’une application Réalisation de wireframes et maquettes ergonomiques. Planification et hiérarchisation des tâches. Phase 2 – Interfaces statiques et adaptatives Intégration HTML/CSS conforme aux standards W3C. Création de sites responsive et accessibles. Déploiement de pages sur serveur + gestion de versions (Git). Phase 3 – Interfaces dynamiques (Front-end) JavaScript et interactivité avancée. Appels asynchrones (AJAX, APIs). Utilisation de frameworks front-end. Phase 4 – Composants d’accès aux données Programmation orientée objet. Création de modules CRUD (Create, Read, Update, Delete). Tests unitaires et sécurisation du code. Phase 5 – Développement back-end Mise en place d’architectures serveur (MVC, API REST). Connexion aux bases de données et intégration d’APIs. Sécurisation (bonnes pratiques OWASP). Phase 6 – Bases de données Modélisation (MCD, MPD). Création, gestion et sécurisation de bases relationnelles. Sauvegardes et gestion des accès utilisateurs. 🛠️ Méthodes & outils Développement full-stack (Front & Back). Pratique des méthodes agiles. Travail collaboratif et gestion de versions (Git/GitHub). Hébergement et déploiement sur serveurs Linux / Cloud. ✅ Modalités 735h en centre + 280h de stage en entreprise. Formation intensive en présentiel. Projet final présenté devant un jury de professionnels.
- JavaScript Algorithms and Data StructuresFreeCodeCamp2022Objectif : Maîtriser les bases et les concepts avancés de JavaScript afin de développer des applications web dynamiques et résoudre des problèmes algorithmiques. Certification internationale délivrée par FreeCodeCamp. 📚 Contenu du parcours Fondamentaux de JavaScript Variables, constantes et portée. Types de données, tableaux et objets. Boucles, conditions, fonctions et portée. ES6 (JavaScript moderne) Syntaxe moderne : let, const, fonctions fléchées. Destructuration, spread/rest operator. Modules et import/export. Programmation orientée objet (POO) Création et manipulation de classes. Héritage, encapsulation, méthodes statiques. Prototypes et chaînes de prototypes. Programmation fonctionnelle Fonctions pures, immutabilité et closures. Méthodes de haut niveau (map, filter, reduce). Gestion des données sans mutation. Structures de données et algorithmes Piles, files, listes chaînées. Arbres et graphes (bases). Algorithmes de recherche et de tri. Expressions régulières (Regex) Création et utilisation de motifs. Recherche, remplacement et validation de chaînes. Débogage et bonnes pratiques Gestion des erreurs avec try/catch. Outils de débogage intégrés au navigateur. Tests unitaires de base.