Full Stack Java Developer

Build software that real institutions and businesses rely on every day, and do it in a team where senior engineers actually share their know-how.

We’re Infosystems International JSC, an experienced Bulgarian IT company delivering end-to-end software for SMEs, large enterprises and the public sector. We’re looking for a Full Stack Java Developer to join one of our product teams and take part in the full software development cycle: analysis, design, development and deployment.

📍 Sofia, hybrid (3 days office / 2 days remote)

What you’ll work on

• Designing and building new features and services for [e.g. e-government platforms, ERP, fintech, logistics systems]
• Contributing ideas and decisions in technical discussions, not just taking tickets
• Working side by side with developers, QA engineers and business analysts
• Keeping code quality high through code reviews, testing and CI/CD
• Documenting architecture and design through diagrams
• Sharing knowledge and helping junior colleagues grow

Our stack

• Core: Java, Spring Boot, Hibernate/JPA, PostgreSQL, Maven/Gradle
• Also used across projects: Redis, RabbitMQ, NoSQL (e.g. MongoDB), Docker, GitLab CI/CD
• Frontend: Angular or React
• You don’t need to know everything on this list. Strong Java fundamentals matter more than ticking every box.

You are a good fit if you have

• 3+ years of professional Java development experience
• Solid hands-on experience with Spring Boot and Hibernate/JPA
• Good knowledge of SQL (PostgreSQL) and some exposure to NoSQL databases
• Understanding of OOP, design patterns and clean architecture
• A habit of writing testable, maintainable code
• Practical experience using AI coding tools (Copilot, Cursor, Claude Code, ChatGPT or similar) in your daily work
• Good communication skills and a team-first attitude

Nice to have

• Experience with Angular/React
• Microservices and RESTful API design
• Monitoring and logging tools (ELK, Prometheus)
• Computer Science degree or equivalent

What we offer

• Hybrid model: 3 days in our Sofia office, 2 days from home
• Direct work with senior engineers and real mentorship
• Budget for courses and certifications
• Chance to take part in our upcoming AI-driven product initiatives
• Additional health insurance, food vouchers, Multisport card discount
• Free parking at the office
• Team buildings and a friendly, stable work environment