b
bilalbelli452

Belli

@bilalbelli452

Programmer , Software Engineer

France
Anglais, Français, Arabe, Espagnol
Certaines informations sont présentées en anglais.
À propos de moi
TLDR: Check reviews ! :) portfolio: bilalbelli.eu 👈 I’m an experienced Software Engineer (with diploma) and Developer (not a vibe coder ! i understand and i can do everything) specializing in Python, Java, Javascript, Typescript, and modern Web technologies (Angular, Spring Boot, Node.js, Flask, Wordpress, Bootstrap, Next.js, Electron.js), and I also provide tutoring and mentoring in programming and computer science topics. I hold a strong Computer Science background, with solid experience in software development, backend & frontend engineering, machine learning and applied problem-solving.... Plus d’infos

Compétences

b
bilalbelli452
Belli
hors ligne • 
Temps de réponse moyen de 1 heure

Voir mes services

Correction de bugs
I will fix software bugs, code errors and technical troubleshooting
De45 $US / projetPlus de détails
Applications Web Full stack
I will develop a java spring boot web application and rest API
De60 $US / projetPlus de détails

Portfolio

Expérience professionnelle

Upwork

Java Developer - OpenFX / Library System

Upwork • Freelance

Dec 2025 - Present • 9 mos

Worked as a Java Developer on a Library System (OpenFX), building scalable backend services for real-time FX data processing and transaction handling. Implemented REST APIs, Spring Boot microservices, and PostgreSQL databases, optimizing latency, throughput, and data consistency for high-frequency workflows. Delivered secure, maintainable, and high-performance backend systems, supporting frontend dashboards, reporting tools, and automated financial workflows.

Carlsberg_Group

Full Stack Web Developer - Java Spring Boot / Angular / gRPC / RESTful

Carlsberg Group • Temps plein

Dec 2024 - Dec 2025 • 1 yr

I worked as a web developer and Java Developer on a project focused on building high-performance, scalable backend systems and API architectures for enterprise and SaaS microservices-based applications. In this role, I specialized in Java, Spring Boot, REST APIs, gRPC, and Protobuf, with a strong focus on backend performance optimization and efficient data serialization. As a web developer and Java Backend Developer, I migrated Spring Boot microservices, converting REST/JSON APIs to gRPC with Protobuf to improve loading time. I collaborated with Angular frontend teams, refactored API contracts and DTOs, and integrated secure, efficient backend services designed to handle high load and real-world production environments. I implemented performance testing, load testing, and regression testing, achieving measurable results such as up to 82% improvement in application load time. I also produced technical documentation using Confluence, migration guides.

Security_First IT

Software Engineer - Reverse Engineering & Cybersecurity - R&D

Security First IT • Temps plein

Dec 2023 - Dec 2024 • 1 yr

(Collaboration with Pradeo) - Development of a tool for detecting malicious behavior in iOS applications from binary code. The results at the end : - Design and development of a decompiler for iOS application binary files. - Development of algorithms for inter- and intra-function static analysis. - Writing of a scientific article updating the state-of-the-art of malware detection methods.