Medior/Senior Backend Engineer (Java/Spring Boot) - Neon team

Location: Belgrade, Serbia

We at Holycode are currently looking for a Medior/Senior Backend Engineer (Java/Spring Boot) with strong skills and proven experience who is ready to dive into the Neon project team, for a full-time engagement, to join our company of passionate IT professionals.

About Neon

Neon is a Zurich-based fintech startup on a mission to disrupt the Swiss banking industry and become Switzerland’s #1 bank account. With over 250,000 users and a passionate team, we’re proud of what we’ve achieved—and we’re ready for the next chapter.How We Work

• We combine excellent UX/UI with data-driven decision-making
• We focus heavily on automation, CI/CD, and reproducible environments
• We believe in ownership, calculated risks, and always putting the customer first
• We encourage open discussions, technical excellence, and continuous improvement• Collaboration, respect, support, and social engagement are at the heart of our mighty tech team

What You’ll Do

• Design, build, and maintain robust backend services using Java 21, Spring Boot 3, REST APIs, and Kubernetes
• Take end-to-end ownership of backend components — from design to production
• Contribute to and improve CI/CD pipelines in an agile Kanban environment
• Use observability and monitoring tools to ensure system health, performance, and reliability
• Collaborate closely with backend and frontend engineers, QA, product owners, and platform teams to enhance our applications
• Influence architecture, best practices, and technical decisions through team discussion
• Support and mentor other engineers through code reviews and knowledge sharing
• Leverage AI-assisted development tools (e.g., GitHub Copilot, Claude Code) to accelerate backend development, code reviews, and testing

Our Tech Stack

• Java 21, Spring Boot 3, JPA/Hibernate, REST APIs
• Angular
• MySQL, PostgreSQL
• Google Cloud Platform, Kubernetes

Key qualifications

• Extensive experience building production-grade Java applications
• Comfortable using AI coding assistants as part of the daily workflow (Copilot, Cursor, Claude, etc.)
• Solid understanding of backend architecture, software design, and distributed systems
• Strong knowledge of SQL, REST APIs, microservices, and networking concepts
• Hands-on experience with CI/CD pipelines, tools and modern DevOps practices
• Ownership of components, features, or systems in past roles
• Fluent in spoken and written English (German or other related languages are a plus)
• Living in Belgrade or is willing to come to the office at least 2 days per week (hybrid model)

Why you'll love working here:

• Private health insurance
• Equipment of your choice (laptop, monitor, accessories)
• High-growth company with innovative products
• Supportive, international team
• Budget for professional development (courses, books, conferences)
• English and German language lessons during working hours
• Nice office in Belgrade with a stocked kitchen and game area
• Opportunity to learn, grow, and make a real impact

If you are looking for an environment where you can grow professionally, learn from the best in the field, balance work and life habits and have a pleasant and enthusiastic environment, please submit your CV in English.

#LI-Hybrid