Senior Backend Engineer

Job Description – Senior Backend Engineer   Experience: 8–10 Years   Location: Remote  Shift Timings: 5:30 PM – 2:30 AM IST  Notice Period: Immediate Joiners Only   Role Overview  We are seeking a highly skilled Senior Backend Engineer with deep expertise in Python, FastAPI, OCR technologies, and AI-driven document processing systems. The ideal candidate will be responsible for designing and building scalable backend platforms capable of processing large volumes of complex documents while integrating advanced OCR and LLM-based classification capabilities.  Key Responsibilities  Backend Platform Development  Design, develop, and maintain scalable backend services using Python and FastAPI.  Build high-performance document processing systems capable of handling thousands to tens of thousands of documents.  Develop asynchronous processing pipelines using queues, background workers, and event-driven architectures.  Architect scalable microservices and APIs for document ingestion, processing, classification, and validation.  AI & Document Classification  Implement AI-powered document classification workflows using OCR and Large Language Models (LLMs).  Integrate LLM APIs for document analysis, extraction, validation, and classification.  Design and implement confidence scoring mechanisms and document verification frameworks.  Support automated document review and exception management processes.  Document Taxonomy & Validation  Design, maintain, and enhance document taxonomies, classification schemas, and structured labeling systems.  Implement taxonomy-driven document grouping, validation, and assembly workflows.  Support multi-page document assembly using page-level signals and classification logic.  Manage taxonomy versioning and classification rationale for auditability and compliance.  Reliability, Auditability & Performance  Build robust exception handling, retry mechanisms, and fallback processing paths.  Implement comprehensive audit trails, data lineage tracking, and observability frameworks.  Ensure system resiliency, scalability, maintainability, and operational excellence.  Optimize infrastructure utilization and AI inference costs while maintaining performance targets.  Loan & Financial Document Processing  Support loan processing workflows by classifying, assembling, and validating borrower documents such as:  KYC documents  Income proofs  Bank statements  Financial agreements  Compliance-related documents  Enable faster and auditable credit decisioning through taxonomy-driven validation and exception handling.  Required Skills & Experience  Core Technical Skills