Description :

Job Title : Senior Backend Engineer (Python & FastAPI)

Experience : 6+Yrs

Location : Remote

Timing : 5 : 30 PM to 2 : 30 AM IST

Notice Period : Immediate Joiners Only

Role Overview :

We are seeking a Senior Backend Engineer with strong expertise in Python and FastAPI to design and scale a high-performance document-processing backend. The system will handle large, complex PDFs and support AI-driven classification workflows.

Key Responsibilities :

- Design and develop backend services to reliably process large PDF documents (200+ pages)

- Implement AI-driven document classification using taxonomy-based models with confidence scoring

- Build and maintain document taxonomies for classification, grouping, and validation logic

- Enable multi-page document assembly using taxonomy rules and page-level signals

- Develop robust exception handling mechanisms (fallback flows, needs review pipelines)

- Implement audit trails and data lineage, including taxonomy versioning and classification rationale

- Optimize system performance to ensure scalability and cost-efficient AI inference

- Support loan processing workflows by classifying and validating borrower documents (KYC, income proofs, bank statements, agreements, etc.)

Required Skills & Experience :

- 4+ years of hands-on experience in Python development

- Strong expertise in FastAPI for backend services

- Experience with PDF processing libraries such as PyPDF2, pdf2image, or similar

- Hands-on experience integrating LLM APIs (preferably GPT-4 Vision or similar)

- Experience working with Google Cloud Platform (GCP)

1. Cloud Storage

2. Firestore

3. Cloud Tasks

- Strong understanding of :

1. Asynchronous job processing (queues, workers, retry logic)

2. Error handling and fault tolerance

3. Data lineage and audit systems

4. Document taxonomies / classification schemas