Ghassen Mellassi's Portfolio

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Experience Work

I am Ghassen MELLASSI, a passionate software engineer with over 5 years of experience in building scalable web and mobile applications. I have contributed to a variety of projects, from fintech platforms to open-source tools, and thrive in collaborative, innovative environments.

Flouci (by Kaoun)

Senior Frontend Engineer

Tunis, Tunisia

• Optimized user workflows for the Flouci Banking App, increasing task completion rates by 15%.
• Implemented modern UX/UI design systems across web and mobile platforms, reducing bounce rates by 20%.
• Led cross-functional collaboration to roll out 3 major app updates within tight deadlines.
• Conducted usability testing, achieving a 95% satisfaction rate in user feedback.
• Set up initial project architecture and defined code guidelines for new features.
• Conducted regular code reviews to ensure code quality and adherence to best practices.

Techs:

React
React Native
Remix (React SSR)
Expo
figma
Tailwind CSS
Docker
Jenkins

Dec 2024 – Present

Proxym-Group

Software Developer

Sousse, Tunisia

• Promoted to Team Lead in 2023 after consistently exceeding performance targets.
• Delivered high-impact e-banking and e-health projects, improving end-user efficiency by 30%.
• Mentored junior developers, reducing onboarding time by 25%.
• Designed and executed comprehensive unit and end-to-end tests, achieving 90% code reliability.
• Automated CI/CD pipelines, cutting release times by 40%.
• Actively participated in code reviews and established code guidelines for various projects.
• Set up initial project structures, ensuring adherence to technical standards.

Techs:

TypeScript
React
NestJS
SpringBoot
Styled Components
Formio
Prisma
Git
Docker
Azure
Detox
Jest

Sept 2020 – Dec 2024

IT Consultant

IT Consultant (Full-stack Developer & DevOps)

Remote

• Delivered tailored IT solutions for major clients in Germany, including RWE Essen and Celebrate Company in Hamburg.
• Managed the full software development lifecycle: requirements gathering, architecture, implementation, and deployment.
• Developed web and data-driven applications, ensuring compliance with client specifications and industry best practices.
• Provided technical guidance and support, facilitating smooth project delivery and client satisfaction.
• Contributed to frontend development, testing, and Storybook integration.
• Worked on backend with .NET and ExpressJS, including Excel API integration.
• Implemented cloud computing solutions using Firebase queries, AWS Lambda functions, and AWS services like S3 & Route53.

Techs:

NextJS
React Native
Storybook
Tailwind CSS
Bootstrap
styled-components
.NET
ExpressJS
Excel API
Cloudinary
Firebase
AWS
Azure
Git
Github Actions
Bitrise

Occasional projects, 2021 – 2024

What people sayTestimonials

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Education Academic

EPI - International Multidisciplinary School

National Engineer Diploma in Computer Engineering

Computer Engineering

Comprehensive engineering program focused on software engineering, systems architecture, and project management.

Key projects: Full-stack development, cloud computing, and DevOps practices.

Activities: Member of the EPI Tech Club, hackathon participant.

2020 - 2023

Higher Institute of Computer Science and Communication Technologies

Bachelor’s Degree in Computer Networks

Computer Networks

Bachelor’s program with a focus on computer networks, network security, and telecommunications.

Key projects: Network design, administration, and security.

Activities: Member of the networking club, participated in technical workshops.

2017 - 2020