Open to opportunities

Daniel User

@danieluser72

Junior Java developer who helped build Club de Tennis Terrassa’s management system for 300+ members, with tests and CI on every push.

Spain

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What I'm looking for

I’m looking for a team where I can learn alongside people with more experience and contribute in backend development or QA and test automation. I’m interested in remote work or opportunities in the Barcelona area.

I helped build Club de Tennis Terrassa’s internal management system during my internship, working with two other developers on a tool used by 300+ members to book courts, enter tournaments and receive match reminders. I designed tables and JPA queries, configured role-based access with Spring Security, and packaged the app with MySQL using Docker Compose.

I’ve also built a 3D room planner, a school manager with a Flutter client, and a restaurant ERP that alerts staff through a Telegram bot. I’m drawn to work with real users and data, and I like being able to prove my code works with tests and CI.

Experience

Work history, roles, and key accomplishments

Junior Developer (Internship)

Club de Tennis Terrassa

Oct 2025 - Jun 2026 (8 months)

Built the clubs internal management system for 300+ members with two other developers:
• Designed tables and JPA queries for court bookings, tournaments, player categories and member accounts
• Configured Spring Security with Admin, Staff and Player roles, so each member only sees their own data
• Added automated emails for match reminders, tournament brackets and club announcements
• Packaged

IT Support & Maintenance Technician (Internship)

Escola La Nova Electra

Oct 2023 - Jun 2024 (8 months)

• Kept 80+ laptops, tablets and desktops running across 15 classrooms
• Set up workstations, network cabling, static IPs and printers on the school LAN
• Installed projectors plus the Generalitats official OS images and educational software

Education

Degrees, certifications, and relevant coursework

Institut Nicolau Copèrnic

Higher Technical Degree (CFGS), Multiplatform Application Development (DAM)

2024 - 2026

Two-year vocational degree in software development: Java, Kotlin/Android, databases (SQL), data access with JPA/Hibernate, user interfaces, multithreading and networking, ERP systems. Final-year internship at Club de Tennis Terrassa building a Spring Boot management system for 300+ members.

Institut Nicolau Copèrnic

Intermediate Technical Degree (CFGM), Microcomputer Systems and Networks (SMIX)

2022 - 2024

Hardware, operating systems (Windows, Linux), local networks and network services. Internship as IT support technician at Escola La Nova Electra, maintaining 80+ devices