{"id":1312748,"url":"https://alion.io/job/gtech-java-back-end-developer","title":"Java Back End Developer","company":{"id":3824395,"name":"GTech","domain":"gtech.digital","url":"https://alion.io/company/gtech-digital","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Tangerang, 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Minimum 7 years of hands-on experience developing backend systems using Java.\n\n At least 2 years of experience working with ClickHouse or a similar columnar/analytical database.\n\n Experience developing or maintaining CRM applications or related business systems.\n\n Experience working in Agile/Scrum delivery teams.\n\n Experience with Spring Framework / Spring Boot is preferred.\n\n Strong understanding of object-oriented programming, design patterns, and software architecture.\n\n Experience building and maintaining backend services and RESTful APIs using Java and Spring Boot.\n\n Knowledge of working with ClickHouse and CRM-related systems, including:\n\n Data modeling and schema design for analytical workloads\n\n Query optimization and performance tuning\n\n Data ingestion and ETL processes\n\n CRM data structures (leads, accounts, contacts, opportunities, etc.)\n\n Integration with third-party CRM platforms and APIs\n\n Data synchronization and consistency across systems\n\n 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