
Boubaker Seddik Jouini
Senior Frontend Engineer
Salaire / Taux journalier
Tunis, Tunisie
Freelance, ouvert au CDI
Expertises
Langues
À propos
Introduction
Senior Frontend Engineer (React / Next.js) with 4+ years of experience, highly motivated and solution-oriented, delivering scalable, secure, and high-performance SaaS and fintech applications for a digital transformation. Results-driven and client-focused, with strong problem solving skills, ownership mindset, and experience collaborating in cross-functional Agile teams. Specialized in React, Next.js, TypeScript, and modern frontend architecture.
Expérience de travail
Senior Frontend Engineer
Watad
juin 2024 - Présent
2 ans 5 mois
Riyad Arabie saoudite
– Developed and maintained a large-scale SaaS platform serving multi-role users (admin, suppliers, contractors) – Improved frontend performance by ~30% through code splitting, memoization, and React Query caching – Implemented secure authentication & RBAC, reducing unauthorized access incidents by 100% – Optimized web application load time, achieving <2s First Contentful Paint (FCP) on key pages – Built scalable frontend architecture supporting 10k+ active users/month – Strengthened data security and session handling aligned with SaaS best practices – Spearheaded the development of a real-time monitoring dashboard using React.js, Next.js and TypeScript, providing stakeholders with actionable insights on user engagement metrics daily, enabling data-driven decisions.
Lead Frontend Engineer
VALOS IT
mai 2023 - juin 2024
1 an 2 mois
Londres, Royaume-Uni
– Led frontend development in a client-focused and delivery-driven environment for AI-powered applications – Worked proactively with designers and backend teams, demonstrating strong cross-functional collaboration and stakeholder communication – Integrated Speech-to-Text (STT) and Text-to-Speech (TTS) features, improving user engagement by +40% – Designed and delivered AI-driven UI workflows, reducing manual user actions by ~35% – Built reusable UI components, decreasing feature development time by 25% – Ensured high code quality through unit testing, achieving 80%+ test coverage – Coordinated frontend deliverables across cross-functional teams (design, backend, product) – Championed frontend development for a large-scale SaaS platform, leading the implementation of key features across diverse user roles while upholding 80%+ unit test coverage. – Acted as a solution-oriented engineer, resolving complex RBAC and security challenges across multiple user roles
Frontend Engineer
Move JS/Redpelicans
févr. 2022 - juil. 2023
1 an 6 mois
Paris, France
– Built SEO-friendly SSR applications in a results-driven environment focused on performance and maintainability, improving organic traffic by +20% – Collaborated closely with multidisciplinary teams, showing strong teamwork and attention to detail – Optimized frontend performance, reducing page load time by ~35% – Developed data-driven UIs using D3 for advanced visualizations – Applied functional frontend architecture principles to improve maintainability and scalability – Deployed automated testing pipelines with GitLab CI for three critical software modules, resulting in a 30% decrease in manual testing efforts and allowing the QA team to focus on edge cases.
Lead Frontend Engineer
Pyra
juin 2022 - mars 2023
10 mois
Mascate, Oman
– Designed scalable fintech interfaces with a problem-solving mindset, ensuring accuracy and performance for financial data – Took ownership of CI/CD and GitOps processes, contributing to continuous improvement of delivery pipelines, reducing deployment time by ~50% – Implemented real-time market data visualizations, improving data readability and decision-making speed – Optimized frontend architecture to handle large financial datasets (100k+ rows) efficiently – Automated frontend testing pipelines, lowering regression issues by 30%
Formation
Private Higher School of Engineering and Technology - ESPRIT (EUR-ACE)
Computer Science Engineer, Mobile Data Specialization
2017 - 2022
5 ans 1 mois
– Strong foundation in software engineering, problem-solving, and algorithmic thinking – Trained in modern web technologies, system design, and data-driven applications – Worked on team-based projects following Agile methodologies – Developed a solution-oriented mindset with focus on performance, scalability, and code quality