SQL Developer

Role: SQL DeveloperInterview mode: In personWork type: Hybrid ( 4 days week)Location: St Louis, MONOTE: Want some one who can work on our W2We are seeking a Senior Software Developer (10+ years experience) with deep expertise in backend SQL development to support enterprise billing systems and post-merger integration efforts.This role is heavily focused on hands-on SQL engineering (60 70%) and requires someone who can operate independently, contribute to design, and collaborate across multiple business and technical teams.Note: This is not a full-stack or BI/reporting role candidates must have strong backend data development experience.Key ResponsibilitiesDevelop, optimize, and maintain complex SQL queries, stored procedures, and backend data processesSupport and enhance billing platforms including CSG and ICOMSContribute to system design and architecture discussions for data and backend workflowsWork cross-functionally with multiple teams (business + technical) on integration effortsParticipate in full SDLC: requirements, design, development, testing, and documentationMonitor and ensure stability of automated processes and data pipelinesTroubleshoot production issues and drive resolution independentlyRequired Qualifications10+ years of software development experience, with a strong focus on backend systemsExpert-level SQL skills (60 70% of role)Complex joins, indexing strategies, performance tuningStored procedures, data modeling, query optimizationProven experience working in large-scale enterprise environmentsStrong communication skills able to work across multiple departmentsExperience contributing to design and technical decision-makingHands-on involvement in SDLC processesPreferred QualificationsExperience with SSISExperience with C# / .NETExperience with telecom or billing systems such as CSG and ICOMSExperience supporting merger/integration-related initiativesAdditional DetailsOn-call rotation: Once every 6 weeks (Mon Sun)Weekend: check emails 1 2 times daily (no active calls expected