We are looking for a talented Senior Java Developer to join our partner’s team and work on a modern software solution in the travel and tourism industry. This is an exciting opportunity for a strong Java engineer who enjoys working with modern technologies, distributed systems, and international teams.

Position details

• Start: ASAP
• Duration: 3 months initially
• Location: Ukraine
• Employment model: Direct hire
• Workload: Full-time
• Industry: Travel & Tourism
• English: Upper-Intermediate (B2+) to Fluent

Key Responsibilities

• Develop backend solutions based on modern software development practices, cloud platforms, and microservice architecture.
• Participate in application architecture and solution design.
• Take part in architecture and code reviews.
• Design and implement unit, integration, functional, and other types of tests.
• Develop highly testable, scalable, performant, and maintainable code.
• Work with Agile methodologies and participate in Scrum activities.
• Collaborate closely with PMs, engineers, architects, QA, and other stakeholders.
• Communicate directly with the client on a daily basis to clarify requirements and discuss technical solutions.
• Contribute to technical documentation and feature design.
• Troubleshoot, profile, debug, and optimize applications.
• Participate in refactoring and continuous improvement of development processes.

Requirements

• 5+ years of commercial software development experience.
• 3+ years of strong commercial experience with Java.
• Strong knowledge of OOP, SOLID, DDD, TDD/BDD, algorithms, data structures, and design patterns.
• Strong experience with Spring Boot and backend development.
• Experience with high-performance and high-load systems.
• Good knowledge of Kotlin and reactive programming, preferably with Spring Boot Reactor.
• Experience with Node.js / TypeScript, particularly for AWS Lambda functions.
• Strong understanding of REST APIs, authentication and authorization flows, OAuth, JWT, and network protocols.
• Experience with relational databases such as PostgreSQL, MySQL/MariaDB, or Oracle.
• Experience with NoSQL / key-value storage such as Redis or Memcached.
• Experience with messaging systems such as Kafka, RabbitMQ, AWS SQS, or similar.
• Experience with Docker and cloud platforms, preferably AWS.
• Good knowledge of Git and CI/CD practices.
• Understanding of security principles and common vulnerabilities, including OWASP.
• Experience with microservices architecture and distributed systems.
• Ability to communicate directly with international clients and clarify technical requirements.
• English: Upper-Intermediate (B2+) or higher.

Technical Skills

• Languages: Java, Kotlin, Node.js, TypeScript
• Frameworks: Spring Boot, Spring Boot Reactor
• Architecture: Microservices, DDD, design patterns, distributed systems
• Databases: PostgreSQL, MySQL/MariaDB, Oracle, Redis, Memcached
• Messaging: Apache Kafka, RabbitMQ, AWS SQS or similar
• Cloud: AWS
• Testing: JUnit, PowerMock, WireMock
• DevOps: Docker, CI/CD, Git
• Security: OAuth, JWT, OWASP
• OS: Linux and command-line tools

Nice to Have

• Hands-on experience with AWS services such as Aurora, Lambda, and Step Functions.
• Experience with Kubernetes.
• Knowledge of Terraform or Ansible.
• Experience with serverless architecture.
• Experience integrating third-party solutions.
• Knowledge of MongoDB, Elasticsearch, or other NoSQL technologies.
• Experience with search engines.
• Relevant Java, Spring, or cloud certifications.

What We Offer

• Opportunity to work on an international project in the travel and tourism industry.
• Collaboration with experienced engineering professionals.
• Exposure to modern cloud-based and microservices architecture.
• Professional growth and knowledge-sharing opportunities.
• International and collaborative working environment.