In Cyclad we work with top international IT companies to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. We are seeking a highly experienced Senior  java Full-Stack Developer to join a hybrid development team in Wrocław. The role combines classic enterprise full-stack development with technically challenging custom solutions, contributing to the modernization and evolution of a complex platform. 

Project information: 

• Type of project: IT services 
• Office location: Wrocław 
• Work mode: Hybrid 
• Budget: 140 PLN net /h - b2b negotiable 
• Project length: one year contract with possible extension 
• Only candidates with citizenship in the European Union and residence in Poland 
• Start date: ASAP (depending on candidate"s availability) 
• Tech stack: Java, Spring Boot, REST API's, JPA, Hibernate, security transactions, Angular 14, RxJS, state management, PostgreSQL, MongoDB, design patterns, Clean Code, GitHub, CI/CD, Apache Kafka, AWS 

Project scope: 

• Design, develop, and maintain backend services using Java and Spring Boot 
• Build and enhance front end features using Angular (v14) with focus on performance and usability 
• Work with and extend proprietary XML based DSLs interpreted by Java runtime components 
• Develop new modules using standard Spring Boot practices, reducing dependency on legacy DSL logic 
• Integrate and optimize data access using PostgreSQL and MongoDB 
• Participate actively in an agile team (sprint planning, daily stand-ups, code reviews) 
• Contribute to architectural discussions and technical decision-making 
• Troubleshoot, debug, and improve existing features and custom logic 
• Support the transition from monolithic frontend to micro-frontends 
• Support data migration from PostgreSQL to MongoDB 

Requirements: 

• Minimum 7+ years of professional experience in software development 
• Strong experience with Java and Spring Boot, including REST APIs, JPA/Hibernate, security, and transactions 
• Solid experience with Angular, including components, services, RxJS, and state management 
• Hands-on experience with PostgreSQL and MongoDB, including schema design and query optimization 
• Confidence working with XML, parsers, metadata-driven logic, or custom DSLs 
• Experience with enterprise-grade applications and complex business logic 
• Strong understanding of software architecture, design patterns, and clean code principles 
• Experience with Git, CI/CD pipelines, and agile methodologies 
• Strong problem-solving skills, attention to detail, and a proactive mindset 
• Good English communication skills 

Nice to have: 

• Experience with interpreters, rule engines, BPM engines, or metadata-driven systems 
• Knowledge of distributed architectures, microservices, Kafka, Docker, or Kubernetes 
• Experience in profiling Java applications and optimizing performance 
• Familiarity with cloud environments such as AWS or Azure 
• Previous exposure to legacy modernization or migration from custom logic to standard architectures 
• Interest in system design, architectural evolution, and long-term platform improvements 

We offer: 

• Hybrid working model 
• Full-time job agreement based on b2b  
• Private medical care with dental care (covering 70% of costs) + rehabilitation package. Family package option possible 
• Multisport card (also for an accompanying person) 
• Life insurance