I'm a Web Developer with a backend focus, building reliable web applications in collaborative team environments. I bring ownership, responsibility, and loyalty to every project. With over five years of experience leading and supporting teams of up to seven people in fast-paced settings, I communicate clearly, work under pressure, and deliver consistent results.…

Roberto Costantino

I'm a Web Developer with a backend focus, building reliable web applications in collaborative team environments. I bring ownership, responsibility, and loyalty to every project. With over five years of experience leading and supporting teams of up to seven people in fast-paced settings, I communicate clearly, work under pressure, and deliver consistent results.…

Available to hire

I’m a Web Developer with a backend focus, building reliable web applications in collaborative team environments. I bring ownership, responsibility, and loyalty to every project.

With over five years of experience leading and supporting teams of up to seven people in fast-paced settings, I communicate clearly, work under pressure, and deliver consistent results.

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Skills

Experience Level

CSS
Expert
JavaScript
Expert
Python
Expert
React JS
Expert
Django
Expert
TypeScript
Expert
Bootstrap
Expert
GraphQL
Expert
MongoDB
Expert
PostgreSQL
Expert

Language

Italian
Fluent
English
Fluent
German
Intermediate

Work Experience

Full-stack Developer at Freelance
January 1, 2025 - January 1, 2026
Led a team of 3 in designing and building a web application for audio track analysis; Integrated LLM to generate more accurate and context-aware mix feedback; Optimized the audio analysis pipeline and improved single-track analysis and A/B comparison performance by ~30% through more efficient feature extraction and asynchronous processing.
Event Organizer at Overground Records
January 1, 2019 - January 1, 2024
Planned and executed music events from concept to completion, including venue scouting, artist coordination, and logistical management. Built relationships with artists, agencies, and partners; handled communication, scheduling, and contract negotiations. Planned and executed marketing campaigns and promotional materials, resulting in a 15% growth in event attendance.
Team Leader / Manager at Vox Bar, Grand Hyatt Berlin
January 1, 2017 - January 1, 2024
Led a team of 7 to deliver consistent service, managed inventory and budget, created new menus, resolved complaints, and ensured smooth daily operations. Improved sales by 10% and reduced costs by 5% while maintaining guest satisfaction and high service standards. Managed a high-pressure hospitality environment requiring efficient operations and strong leadership.

Education

Audio Engineering Diploma at SAE Institute
January 1, 2018 - June 1, 2020

Qualifications

Web Development Certification
March 1, 2025 - November 1, 2025
Python Certification
September 1, 2025 - November 30, 2025

Industry Experience

Software & Internet, Media & Entertainment, Education, Professional Services
    paper MIx Scope

    MixScope is a web application designed to analyze audio tracks, optionally compared against a reference track, and provide technical feedback to support audio engineers during the mixing phase. The project was developed for a private individual and is currently used as an internal tool to deliver fast, reliable, and expert-level mix analysis.

    Visit the case-study here: https://www.twine.net/signin

    paper Meal Mind

    MealMind is a recipe platform that helps users organize their meals and discover new dishes. It’s an open and community-driven space where everyone can share, search, and explore recipes from a global database.

    Visit the app here: https://www.twine.net/signin

    paper AI Learning Platform

    AILMS is an educational learning platform designed to provide a personalized learning path across different subjects. The goal was to build a constructive and engaging tool where users can learn something new every day through tailored, AI-generated content.

    Visit the app here: https://www.twine.net/signin