À propos de Chadjaa
I'm a full-stack engineer with 5+ years of experience building products that actually have to work — real-time payment infrastructure, device management platforms, data-heavy dashboards. I don't specialize in one layer. I move between frontend, backend, and infrastructure depending on what the problem needs.
At my current role in fintech, I built systems connecting 1,000+ payment terminals in real-time, cut API response times from 350ms to 45ms, and shipped 200+ endpoints that handle high-volume transactions daily. I've worked across React, Next.js, Node.js, Python, PostgreSQL, Redis, Docker, and AWS
Arabe
Bilingue ou natif
Français
Notions
Anglais
Capacité professionnelle complète
En télétravail uniquement
Travaille majoritairement à distance
Expériences
- 3spaySoftware EngineerAGENCE & SSIIjuin 2024 - Aujourd'hui (2 ans)Algiers, Algérie• - Designed and delivered 200+ REST and GraphQL API endpoints using Node.js, Bun, and Express, supporting high-volume fintech transaction workflows.• - Built real-time communication infrastructure using Server-Sent Events, Socket.IO, and MQTT to connect and manage 1,000+ payment terminals.• - Integrated Keycloak and OAuth2/OIDC for identity and access management; developed Java-based microservices handling high-throughput token validation across internal systems.• - Implemented Redis caching layers that reduced database load by 90% and cut API response times from 350ms to 45ms.• - Architected frontend features across an 8-engineer team using React, Next.js, Redux, Zustand, and React Query for efficient data fetching and state management.• - Automated infrastructure provisioning with Docker, Nginx, and SSL/TLS — reducing server setup time to under 5 minutes.• - Built an internal Chrome extension that saved QA teams 50+ hours/month on manual testing workflows.• - Optimized Lighthouse scores and accessibility across production apps, achieving a 20% increase in user engagement.
- datamaster.iaFront-End Developerfévrier 2024 - février 2025 (1 an)Tlemcen, Algérie• - Built data dashboards capable of rendering and interacting with 10,000+ row datasets using React Table with row virtualization.• - Reduced average API round-trips by 40% through optimized client-side caching with Zustand, across a 10+ person product team.• - Raised platform WCAG compliance and brought all Core Web Vitals scores into the green across major page routes.
- Remote Clients • · Europe & MENAFull Stack Developerjanvier 2020 - janvier 2023 (3 ans)(Freelance)• - Delivered full-stack web applications for startups and SMBs using React, Vue.js, Node.js, and Django REST.• - Designed and shipped REST APIs backed by PostgreSQL and MongoDB, including third-party service integrations.• - Wrote unit and integration tests with Jest and React Testing Library, reducing regression rates and improving release stability.• - Collaborated with distributed teams using Git workflows, code reviews, and Agile/Scrum processes.
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Formations
- Master's in Artificial IntelligenceUSTO-MB2023Master's in Artificial Intelligence
- Bachelor's in Computer ScienceUSTO-MB2021Bachelor's in Computer Science