Senior Backend Developer

Zagreb, Croatia (Hybrid)



Senior Java Developer | Zagreb | Hybrid | Enterprise Solutions & Products

Join Leapwise - where clean code meets professional growth. We're a B2B software development company specializing in software infrastructure and maintaining our own product portfolio, while serving modern enterprises in Telco, Banking, Cybersecurity, Gaming and IoT. We believe in building cost-effective, open source solutions with no third-party license dependencies. Our culture values quality over quantity and invests heavily in our people.

The Role: We're seeking an experienced Senior Java Developer to lead technical initiatives across our product portfolio and client projects. You'll work on a single, dedicated project (no context switching!), whether it's enhancing our proprietary products or building enterprise-level software infrastructure solutions.

What Makes This Role Unique:

  • Work on both our internal product portfolio and cutting-edge software infrastructure projects
  • Shape the technical direction of products used by industry leaders
  • Deep focus on one project at a time - become a true domain expert
  • Build solutions from inception to production deployment

Key Responsibilities:

  • Lead design and implementation of complex, scalable backend systems and infrastructure
  • Make architectural decisions for both products and client solutions
  • Contribute to our product roadmap and technical strategy
  • Mentor developers through code reviews and pair programming
  • Write exemplary Java code that sets team standards
  • Drive best practices in TDD, CI/CD, and clean architecture
  • Collaborate with stakeholders to deliver business value

What You Bring:

  • 7+ years Java development experience (2+ years in senior role)
  • Expert-level Java 17+ and Spring ecosystem (Boot, Cloud, Security)
  • Strong experience with microservices, REST APIs, and distributed systems
  • Infrastructure and system design expertise
  • Proficiency in PostgreSQL, MongoDB, Redis/Redisson
  • Hands-on with Docker, Kubernetes, CI/CD pipelines
  • Experience with Kafka/RabbitMQ and event-driven architecture
  • Proven mentoring and technical leadership skills
  • Excellent English communication
  • Bachelor's degree in CS/IT or related field

Nice to Have:

  • Experience building B2B software products
  • Infrastructure automation and IaC experience
  • Cloud platforms (AWS/Azure/GCP)
  • Domain experience in Telco/Banking/Cyber Security/Gaming
  • OCA/OCP certifications
  • Open source contributions

What Do We Offer:

Learning & Growth

  • Training by Java Champions
  • Conference attendance
  • All certifications covered (OCA, OCP, AWS, Scrum Master...)
  • 10% dedicated learning time
  • Clear path to Principal Engineer/Team Lead

 Compensation & Perks

  • Competitive salary 
  • Christmas, Easter & referral incentives
  • Additional Health Insurance+ yearly checkups
  • MacBook + premium equipment
  • Balanced meals

⚖️ Work-Life Balance

  • 25+ vacation days
  • Flexible hours (core: 10:00-15:00)
  • Hybrid model (3 office/2 remote days)
  • Fully remote in summer months
  • No overtime culture

👨‍👩‍👧‍👦 Family Support

  • Newborn & kindergarten support
  • Parental leave top-up

Projects You'll Work On:

  • Enterprise software infrastructure solutions
  • Our proprietary B2B product portfolio
  • Open source initiatives
  • Greenfield projects in Telco, Banking, Automation, Gaming and Cybersecurity


Requirements:

  • Croatian citizenship required
  • Full-time position in Zagreb
  • Hybrid work (not fully remote)

Ready to build products and infrastructure that power enterprises?

Hiring Process: Quick 2-week process: Initial chat → Technical assignment (1hrs max)+ Technical interview → Team fit → Offer. 

📧 Apply: careers@leapwise.co Include: CV + GitHub/GitLab + proudest technical achievement. 

We don't complicate when it comes to the hiring process. If you want to get to know us better and learn about the working environment and benefits we offer, feel free to apply or contact us with any questions by sending an email to careers@leapwise.co

Thank you for your interest!

Senior Backend Developer

Job description

Senior Backend Developer

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