Role: Senior Java Developer (Telecom / Mediation Support)Location: Remote – IndiaTechnical SkillsJavaCore JavaCollections FrameworkException HandlingMultithreading BasicsRegular Expressions (Regex)SQL FundamentalsUnix / LinuxShell scriptingCron jobsLog analysis using grep, awk, sedFile permissions and ownershipFile transfer protocols (SFTP / FTP)Telecom KnowledgeUnderstanding of Call Detail Records (CDR)Common CDR types:VoiceSMSDataIMS / MSS / PGWKnowledge of mandatory vs optional CDR fieldsHandling duplicate and missing CDR scenariosProduction Support & DebuggingExpected capabilities include:Analyzing mediation system failuresTracing file flow issuesDebugging record count mismatchesManaging Sev-1 incidentsCoordinating with downstream systems and teams