Senior Java Developer for Ciklum Digital in Ciklum

Ciklum is a Software Engineering and Solutions Company. Our 3,000+ IT professionals are located in the offices and delivery centres in Ukraine, Belarus, Poland and Spain. We are looking forward to seeing you as a part of our team! **Description:** On behalf of Ciklum Digital, we are looking for a Senior Java Developer to join our team on a full-time basis. You will join a highly motivated team and will be working on a modern solution for our client. We are looking for technology experts who want to make an impact on new business by applying best practices and taking ownership. **About project:** We are looking to extend our back-end team with a Senior Java Developer with experience in building high-performing, scalable, event-driven applications. You will be responsible for maintaining and developing a tech stack, consisting of a core gaming platform system and an event-driven microservice- based application operating on top of it. The technology it is built upon is Java/Spring, Kubernetes and Kafka. You will be a part of a friendly and open- minded team, enjoying informal attitude and high level of cooperation, so bring your positive mindset and be ready to smile while at work! **Responsibilities:** \- Participate in the design, extend and support the stack functionality – transactional logic, game play events, campaign and bonus logic, compliance requirements, etc \- Assist customer support and site owners in resolving production issues in a timely manner \- Propose and implement improvements and optimizations of the tech stack \- Collaborate with the product owners and stakeholders on grooming and estimating stories \- Work closely with the front-end team and BI specialists on any back-end dependencies **Requirements:** \- Experience in software development for more than 5 years \- Excellent knowledge in Computer Science, Computing Theory: \- Paradigm & Principles (OOP, SOLID, DDD, TDD, BDD) \- Database theory (RDBMS, NoSQL) \- Code testing practices \- Algorithms \- Data structures \- Architectural, Enterprise and Design Patterns \- Security patterns, Reverse engineering resistance, Common attacks types (OWASP) \- Understanding of network interactions: \- protocols \- conventions (e.g. REST, RPC) \- authentication and authorization flows \- standards and practices (e.g. oAuth, JWT) \- Excellent knowledge and experience in Javas (Java 8 or above) (more than 3 years) \- Practical commercial experience with: \- REST API development \- You are experienced with Spring Framework (Spring Boot, Spring Cloud, Spring Integration and Spring Web) (more than 2 years) \- Testing frameworks (e.g.g. JUnit, PowerMock, WiresMock) (more than 2 years) \- ORM (e.g. Hibernate) (more than 2 years) \- RDBMS (e.g MySQL/MariaDB, PostgreSQL, Oracle) (more than 2 years) \- Key-value storages (e.g. Redis, Memcached) \- Hands-on experience with Kafka \- Experience with messaging – RabbitMQ, ActiveMQ etc \- Web Servers \- Version control systems (GIT) \- Cloud computing platforms (Google Cloud Platform) \- Strong understanding of Docker and containerization \- Experience with CI/CD – (we are currently using GitLab, but any other system like Bitbucket, Bamboo, Jenkins etc. will also count) \- Builders \- You possess solid OOP skills \- Experience with Event-Driven systems, Event sourcing, CQRS \- Experience with Container Orchestration tools (we are currently using Kubernetes and Nomad) \- Experience in supporting production systems, analyzing logs, dashboards etc. (we are currently using the ELK stack) \- Experience with: \- Troubleshooting, profiling and debugging applications \- Creation software architecture and design of complex applications, platforms, microservices solutions \- Agile software processes and technologies \- Code Review process \- Refactoring process \- Fluent or Upper-Intermediate English is a must **You can:** \- Perform a broad range of complex technical or professional activities, in a variety of contexts. Investigate, define and resolve complex issues \- Able to work in distributed cross-functional teams effectively \- Influence customers and team members on the project level \- May supervise others or make decisions which impact the work assigned to individuals or phases of projects \- Plan, schedule and monitor own work (and of others where applicable) competently \- Have learning agility (readiness for challenge and being open to change) **Desirable:** \- Certifications on: \- Java \- Spring Frameworks \- Cloud computing platforms (AWS, GCP, Microsoft Azure) \- Knowledge in Deployment patterns \- Practical commercial experience with: \- Serverless architecture \- Integration with 3rd party solutions \- NoSQL (e.g. MongoDB, ElasticSearch, CouchDB) \- Experience with Search Engines (e.g. ElasticSearch, Azure Search, Apache Solr) \- Provisioning tools (e.g. Terraform, Ansible) \- Quality tools (e.g. SonarQube) \- Past working experience in a Gambling/Casino company or understanding the Gambling/Casino business domain \- Understanding of React/Redux or a relevant experience **What's in it for you:** \- Career growth opportunities \- Realization of your innovative ideas in building new Ciklum Solutions and Services \- Friendly collaborative teams and an enjoyable working environment \- Professional skills development and training programs \- Variety of knowledge sharing, training and self-development opportunities \- State of the art, cool, centrally located offices with a warm atmosphere which creates really good working conditions #### Про компанію Ciklum International Ciklum is a top-five global Digital Solutions Company for Fortune 500 and fast-growing organisations alike around the world. Our 3,000+ Developers located in the Delivery Centres across the globe, provide our clients with a range of services including outsourcing software development, Enterprise App Development, Quality Assurance, Security, R&D, Big Data & Analytics. **Сайт компанії:** https://www.ciklum.com/