Java Developer (Middle/Senior)

About the Role Madison is looking for passionate Middle/Senior Java Developers to join our engineering team in building scalable, high-performance backend solutions for international clients. In this role, you'll work with modern technologies, collaborate with global teams, and contribute to products that serve real-world business needs. If you enjoy solving complex technical challenges, writing clean code, and continuously improving your engineering skills, we'd love to hear from you. Key Responsibilities • Design, develop, and maintain scalable backend applications using Java and Spring Boot. • Design system architecture, APIs, and database models for high-performance, distributed applications. • Drive architectural decisions by evaluating technical trade-offs and recommending the most appropriate solutions. • Ensure system scalability, reliability, performance, and security in production environments. • Lead the investigation and resolution of critical production incidents, perform root cause analysis (RCA), and implement long-term preventive improvements. • Optimize application performance, database queries, and large-scale data processing. • Review code, establish engineering best practices, and mentor junior and middle-level developers. • Collaborate with Product Managers, QA Engineers, DevOps Engineers, and international stakeholders throughout the software development lifecycle. • Contribute to continuous improvements in software architecture, development processes, and engineering culture. Required Qualifications • 3-5+ years of hands-on experience in Java backend development. • At least 2 years of professional experience with Spring Boot and the Spring ecosystem. • Proven experience designing, building, and operating high-traffic production systems or microservices architectures. • Strong ownership of system performance, availability, reliability, and production operations. • Demonstrated experience leading the resolution of critical production incidents, making technical decisions under pressure, and conducting root cause analysis (RCA). • Strong database expertise, including query optimization, indexing strategies, partitioning, and large-scale data processing using both SQL and NoSQL databases. • Proven experience mentoring developers, conducting code reviews, and providing technical leadership. • Ability to clearly explain architectural decisions, evaluate technical trade-offs, and justify design choices based on business and engineering requirements. • Strong understanding of software design principles, distributed systems, and backend architecture. • Good English communication skills, with the ability to collaborate effectively with international teams, present technical solutions, and successfully participate in technical interviews conducted in English. Preferred Qualifications • Hands-on experience with Kubernetes and cloud platforms such as AWS, GCP, or Azure. • Experience implementing monitoring and observability solutions using Prometheus, Grafana, ELK, or similar technologies. • Strong understanding of Domain-Driven Design (DDD) and Event-Driven Architecture. • Experience designing highly available, fault-tolerant distributed systems. • Ability to communicate complex technical concepts effectively to non-technical stakeholders. • Experience working in Agile/Scrum environments.   Recruitment Process 1. CV Screening 2. Technical & Culture Fit Interview 3. Technical Assessment 4. Client Technical Design Interview  Contact Information: If you are interested in this opportunity, please send your CV to: [email protected] For more information about us: https://madison-technologies.com/