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bobby-nandigam/README.md

Bobby Nandigam

Software Engineer — Backend Systems · ML Engineering · Cloud Infrastructure

Portfolio LinkedIn GitHub LeetCode Email

Location


About Me

Software Engineer with 1+ year of industry experience building scalable backend APIs, ML-integrated services, and cloud-native systems. Strong foundation across the full engineering stack — from system design and database optimization to model deployment and multi-tenant security. Focused on writing production-grade code that performs reliably at scale.

Currently open to Backend, ML Engineering, and Platform Engineering roles.


Technical Skills

Languages

Python JavaScript Java C

Backend & Frameworks

Flask FastAPI REST APIs Async I/O

Databases

PostgreSQL MongoDB

ML & AI

TensorFlow scikit-learn LangChain NLP RAG

Cloud & DevOps

Azure Docker GitHub Actions Git

Engineering Practices

System Design Performance Optimization JWT / RBAC CI/CD Agile


Professional Experience

Software Engineer — BillionBright Solutions LLP

Sep 2024 – Jan 2026 · Nellore, India

Metric Result
Daily API Requests Handled 10,000+ with 99.5% uptime
Manual Querying Effort Reduced 80% via NLP-to-SQL system
API Latency Optimized 900ms → 250ms
E-commerce Page Load Improved 45% faster
Low-Bandwidth Response Time 35% improvement

Key Contributions:

  • Architected and deployed scalable backend APIs and ML inference services across multi-tenant production environments
  • Built an NLP-to-SQL pipeline enabling non-technical users to query databases through natural language
  • Reduced API latency by 72% through caching layers, query indexing, and async processing refactors
  • Implemented JWT-based authentication with Role-Based Access Control (RBAC) for secure tenant isolation
  • Mentored junior engineers on production deployment practices and CI/CD workflows

Featured Projects

GraphRAG-Powered Knowledge Retrieval System

Python · LangChain · Neo4j · FastAPI · Azure

A graph-augmented retrieval system that maps relationships between entities in large document corpora, enabling contextually rich, multi-hop question answering beyond the limitations of traditional vector search.

  • Built a knowledge graph pipeline to extract and link entities, relationships, and concepts from unstructured documents
  • Integrated GraphRAG with a vector store for hybrid retrieval — combining semantic similarity with structured graph traversal
  • Exposed a production-ready FastAPI inference endpoint with streaming response support
  • Reduced hallucination rate compared to standard RAG by grounding answers in graph-verified entity chains
  • Designed for extensibility: swap-in support for different LLM backends and document ingestion formats

Python LangChain Neo4j FastAPI Azure


Scalable Document Storage & Management System

Flask · PostgreSQL · Azure Blob Storage · Docker

A production-grade async document storage platform built for high-concurrency enterprise workloads, featuring secure multi-tenant access and worker-pooled uploads.

  • Engineered an async upload pipeline supporting 500+ concurrent users without throughput degradation
  • Designed queueing + worker pooling architecture to decouple upload ingestion from processing
  • Implemented JWT authentication with RBAC tenant isolation — each tenant's documents are access-controlled at the API layer
  • Achieved 40% improvement in upload speed under peak load through connection pooling and blob chunking
  • Containerized with Docker; deployed to Azure with environment-based configuration management

Flask PostgreSQL Azure Blob Docker


Skin Cancer Detection System

Python · TensorFlow · Flask · Azure · CNN

An end-to-end medical imaging pipeline from dataset preprocessing to a live inference API, built to assist early dermatological diagnosis.

  • Trained a Convolutional Neural Network on 13,000 ISIC dermoscopy images with custom augmentation pipeline
  • Achieved 87% classification accuracy across 7 lesion categories including melanoma
  • Reduced false negatives by 12% through threshold calibration and class-weighted loss tuning
  • Deployed as a production inference REST API on Azure with 99.5% uptime SLA
  • Implemented confidence scoring on predictions for downstream clinical review workflows

TensorFlow Python Flask Azure


NLP-to-SQL Query Engine

Python · Flask · PostgreSQL · Transformers

A natural language interface that translates plain-English questions into executable SQL queries, reducing reliance on technical staff for routine data access.

  • Designed a semantic parsing pipeline using transformer-based models fine-tuned on domain-specific schema
  • Reduced manual data querying workload by 80% across internal business operations
  • Handled schema introspection dynamically — works across multiple database schemas without hardcoding
  • Validated output SQL for injection safety before execution, with error recovery and query explanation

Python PostgreSQL HuggingFace Flask


Education

Degree Institution Year CGPA
B.Tech — Computer Science & Engineering NBKR Institute of Science & Technology 2020 – 2024 8.5 / 10

Certifications

Certification Issuer
Database Fundamentals Microsoft
Data Science for Engineers NPTEL — IIT Madras

Achievements

  • Top 10 Finalist — TerraHackathon (among national-level submissions)
  • 5+ Open Source Contributions across backend and ML tooling repositories
  • Engineering Mentor — guided junior engineers on production deployment, CI/CD, and system design

Open to Backend Engineering, ML Engineering, and Platform roles — remote or on-site.

Portfolio

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    Jupyter Notebook