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Tezos ecosystem career opportunities

Tezos is the product of many organizations and individuals across the globe working together on an open-source project.

Senior Java Developer

Madfish

Madfish

Software Engineering
Ukraine · Europe
Posted on Nov 19, 2025

We are looking for a Senior Java Developer to join our team. You will help build a cutting edge innovative realtime trading platform with modern cloud technologies.

Location: remote
Type of work: full-time

Responsibilities:

  • Defining the project's technical strategy, making key technical decisions.
  • Designing the system architecture, developing technical, security, and documentation standards.
  • Writing code, conducting code reviews, optimization, and refactoring.
  • Conducting training sessions, mentoring developers, organizing knowledge sharing.
  • Regular interaction with other teams and product managers.
  • Researching new technologies, evaluating their suitability, and implementing them in projects.

Job requirements

  • 6+ years of professional experience in software development.
  • Strong proficiency in Java (preferred 21), algorithms and data structures, concurrency.
  • Experience with Spring Framework, Hibernate.
  • Experience with Apache Kafka, RabbitMQ
  • Experience with SQL (preferred PostgreSQL).
  • Proficiency with unit and integration testing.
  • Ability to design and implement high-available and scalable microservice architectures.

    Would be a plus:

  • Reactive frameworks (WebFlux)
  • Experience with realtime streaming technologies: Hazelcast Platform, Apache Flink etc.
  • Caching systems (Redis, Hazelcast).
  • Authentication/Authorization frameworks
  • Understanding of a clean code, SOLID principles and event-driven design
  • Experience with AWS cloud

What will you do in the first 90 days?

  • Understand the Product and System Architecture (we pay attention of the onboarding process quality)
  • Build Relationships with the Team
  • Implement new business features
  • Optimize existing high-load services
  • Code coverage with unit and integration tests
  • Drive Innovation and Continuous Improvement

Company offers

  • Care from Day One – medical insurance immediately upon starting work, including dental care, massage and professional psychological support because your well-being matters
  • Work-Life Balance – 24 days of paid vacation + 30 days of sick leave, so you can recover without unnecessary stress
  • Investment in your energy – partial reimbursement for any sports activities that empowers you.
  • Growth – partial coverage for English or Ukrainian language courses + a fixed budget for professional development. Choose what suits you best!
  • Knowledge Library – books in the office and access to the Kuka online library to learn, grow, and find inspiration.
  • Island Relaxation 14 days a year – enjoy a getaway at the corporate villa in Cyprus.