Senior Software Engineer (Java)

Responsibilities

• Design, develop, and maintain scalable and high-performance backend systems using Java and Spring Framework (Spring Boot, Spring MVC, Spring Data, Spring Security, etc.)
• Contribute to system architecture decisions and lead the design of both monolithic and microservices-based solutions
• Develop and maintain Backend-for-Frontend (BFF) layers and core backend services to support scalable applications
• Strong understanding of design principles, design patterns, and architectural best practices (DDD, TDD, and layered architecture)
• Build and maintain RESTful APIs and ensure high availability and performance 
• Collaborate with cross-functional teams including product, design, and QA to deliver high-quality solutions 
• Ensure code quality through code reviews, best practices, and clean code principles 
• Write and maintain unit and integration tests 
• Troubleshoot, debug, and optimize existing systems 
• Participate in CI/CD processes and support deployment activities 
• Mentor junior developers and contribute to team knowledge sharing 
• Stay up to date with emerging technologies and industry best practices
• Experience with AI technologies and a strong interest in learning and applying them in real-world use cases
• This role requires flexibility in working days to align with client schedules, as some clients operate between Sunday and Thursday.
  
  

Qualifications

• BSc/MSc/PhD degree in Computer Science or a related field, or equivalent practical experience
• At least 5 years of professional experience in backend development with Java Strong experience with Spring Framework (Spring Boot, Spring MVC, Spring Data, Spring Security, etc.)
• Strong understanding of OOP principles, design patterns, and scalable system design
• Experience with microservices architecture and distributed systems 
• Hands-on experience with relational and non-relational databases (e.g., PostgreSQL, MySQL, MongoDB, Redis) 
• Familiarity with message brokers (e.g., Kafka, RabbitMQ) is a plus 
• Basic knowledge of front-end technologies such as JavaScript, HTML5 and CSS3 
• Strong unit test and debugging skills 
• Proficiency in code versioning tools such as Git 
• Familiarity with CI/CD pipelines and DevOps practices is a plus 
• Strong sense of analytical thinking and problem-solving skills 
• Excellent attention to detail 
• Highly effective time management and multitasking skills 
• Strong verbal and written communication skills both in English and Turkish