À propos de Jassem
I'm Jassem , a full-stack engineer with 3 years of production experience shipping SaaS platforms, blockchain dApps, and AI-automated workflows for startups and enterprises.
You can check some of my achievements here :
What I bring to your project:
Frontend :
• Pixel-perfect, responsive UIs with React, Next.js , Tailwind, Framer Motion
• Complex real-time dashboards (WebSockets + fallback polling)
• Web3 integrations (Wagmi, Moralis, ethers.js) — wallet connect, on-chain transactions, token gating
• Lighthouse 90+ optimized (went from 28 → 86 on a crypto trading platform)
Backend & DevOps
• Node.js/Express, Spring Boot, FastAPI , Firebase , REST & GraphQL APIs
• Secure auth: JWT, OAuth 2.0, TOTP 2FA (email/SMS/authenticator)
• PostgreSQL, MongoDB, Redis (rate limiting, caching)
• Docker Compose + CI/CD pipelines, Flyway migrations
AI & Automation :
. RAG systems (Langchain, HuggingFace, Groq..) : indexing, embedding, smart retrieval , fusion , generation ..
• Built AI agents that auto-generate tasks/sprints from project briefs
• Resume → quiz generator using LLMs + schema validation
• Human-in-the-loop validation workflows
Recent wins:
• Real-time chess game on Telegram with crypto wallet payments
• Intern management SaaS with AI workflows automation & recommendation engine
• Boosted Lighthouse from 28 → 86 on live crypto trading platform
I speak fluent English/French and and ship fast without cutting corners.
Ready to turn your idea into a scalable, secure, beautiful product? Drop me a message with your Figma/file/spec and I’ll send you a detailed plan + timeline within 24h.
Tech stack: React, Next.js, TypeScript, Tailwind, Framer Motion, Node.js, Spring Boot, FastAPI, PostgreSQL, Redis, Docker, Web3, LangChain, WebSockets
Anglais
Bilingue ou natif
Français
Capacité professionnelle complète
En télétravail uniquement
Travaille majoritairement à distance
Expériences
- Chain IndustriesFull-Stack Developerdécembre 2022 - Aujourd'hui (3 ans et 6 mois)Tunis, Tunisia− Rolled out FLOW to 3,500+ active users with instant social-login wallets, cross-chain swapper (Swing SDK), gamified referral dashboard, and animated membership flows.− Developed responsive and high-performance user interfaces for trading and cryptocurrency platforms.− Modernized UI/UX by integrating smooth animations and contemporary design.− Implemented Web3 libraries to connect digital wallets and interact with token and blockchain transactions.− Secured a social media application with multi-factor authentication (2FA) supporting email, SMS, and authenticator apps.− Built a real-time chess game Telegram application with integrated crypto wallet functionality.− Audited and improved performance: increased Lighthouse score from 28 to 56 by reducing load times and optimizing resources.Technologies: React, Next.js, Tailwind CSS, Framer Motion, Web3 (Wagmi, Moralis), Node.js, OAuth, TOTP
- IT-GROWFull-Stack Developerfévrier 2025 - juillet 2025 (5 mois)Ariana, Tunisia− Developed core business modules: role-based authentication, company profile setup, project-sprint-task lifecycle, performance and analytics dashboards.− Integrated AI automation: task and sprint generation, intern recommendations, and quiz creation from resumes using LLMs with schema validation and human-in-the-loop supervisor validation.− Implemented real-time communication using WebSocket with polling fallback solutions.− Ensured security through JWT-based access control, rate limiting with Redis, and input sanitization.− Containerized the full stack with Docker Compose for consistent local and CI environments.− Wrote unit and integration tests (Jest + React Testing Library for frontend; JUnit + Spring Boot Test for backend)Technologies: React (Vite), Spring Boot, FastAPI, PostgreSQL, Redis, WebSockets, , Flyway
- RemoteFull-Stack Developer (Freelance)janvier 2023 - février 2025 (2 ans et 1 mois)− Delivered full-stack web applications for diverse clients (crypto platforms, artists, small businesses), translating requirements into solutions.− Managed the full project lifecycle from client consultation to deployment, ensuring timely delivery and adherence to specifications.Technologies: React, Next.js, Tailwind CSS, Framer Motion, Firebase, Web3, i18n
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Formations
- Engineering Degree in Computer ScienceNational School of Computer Sciences (ENSI)2025Engineering Degree in
- Preparatory Cycle for Engineering StudiesPreparatory Institute for Engineering Studies of Tunis (IPEIT)2022Preparatory Cycle for Engineering Studies