Sarath Kumar

Backend Engineer

Ernakulam, Kerala 1+ yrs exp 84 · Excellent

About

Backend Engineer specializing in AI and Automation with over 2.5 years of experience designing scalable backend systems, REST APIs, and enterprise automation platforms. Experienced in integrating LLMs into production applications, building AI-powered document processing systems, RAG pipelines, and intelligent chatbots using OpenAI and Google ADK. Strong expertise in FastAPI, Django, PostgreSQL, Oracle AI Database, Docker, Azure, and cloud-native backend architectures. Proven experience delivering enterprise solutions, optimizing database performance, debugging production systems, and collaborating directly with global clients.

Skills & Expertise (31)

Python Advanced

8.0/10

2.5

Years Exp

Git Advanced

8.0/10

2.5

Years Exp

FastAPI Advanced

8.0/10

2.5

Years Exp

AWS S3 Advanced

8.0/10

2.5

Years Exp

REST API design Advanced

8.0/10

2.5

Years Exp

Postgresql Advanced

8.0/10

2.5

Years Exp

AWS EC2 Advanced

8.0/10

2.5

Years Exp

Docker Advanced

8.0/10

2.5

Years Exp

Django Intermediate

7.5/10

2.5

Years Exp

Django Rest Framework Intermediate

7.5/10

2.5

Years Exp

Retrieval-Augmented Generation Intermediate

7.0/10

2.5

Years Exp

Clean Code Practices Intermediate

7.0/10

2.5

Years Exp

Modular Design Intermediate

7.0/10

2.5

Years Exp

OOP Principles Intermediate

7.0/10

2.5

Years Exp

Openapi Intermediate

7.0/10

2.5

Years Exp

Swagger Intermediate

7.0/10

2.5

Years Exp

Postman Intermediate

7.0/10

2.5

Years Exp

OpenAI API Intermediate

7.0/10

2.5

Years Exp

AWS CloudFront Intermediate

7.0/10

2.5

Years Exp

Microservices Architecture Intermediate

7.0/10

2.5

Years Exp

MySql Intermediate

7.0/10

2.5

Years Exp

Azure Storage Intermediate

7.0/10

2.5

Years Exp

Azure App Service Intermediate

7.0/10

2.5

Years Exp

SQLAlchemy Intermediate

7.0/10

2.5

Years Exp

AI chatbots Intermediate

7.0/10

2.5

Years Exp

Vector Search Intermediate

7.0/10

2.5

Years Exp

Tesseract OCR Intermediate

6.5/10

2.5

Years Exp

Nginx Intermediate

6.5/10

2.5

Years Exp

Gunicorn Intermediate

6.5/10

2.5

Years Exp

Celery Intermediate

6.5/10

2.5

Years Exp

Redis Intermediate

6.5/10

2.5

Years Exp

Work Experience

Senior Software Consultant - AI & Automation

Botangelos

Sep 2025 - Present

Designed and developed AI-powered backend applications using FastAPI, PostgreSQL, and REST APIs, delivering enterprise automation solutions for global clients. Successfully delivered an LLM-powered enterprise chatbot Proof of Concept within 7 days, integrating Azure OpenAI (deployed in the client's private environment), PostgreSQL Vector Search, and automated dataset synchronization through scheduled backend jobs. Engineered the chatbot backend to support 1,000+ knowledge documents with scheduled dataset rotation and concurrent access for 40 enterprise users, forming the foundation for the client's approved Phase-1 deployment. Developed an AI Incident Resolution Agent using Google ADK, implementing Retrieval-Augmented Generation (RAG) workflows to assist in automated resolution of ServiceNow incidents. Led the organization's first implementation of Oracle AI Database 26ai, evaluating its vector search and AI capabilities for enterprise knowledge retrieval systems. Optimized and modernized a legacy Flask-based backend, delivering performance improvements, feature enhancements, and production patches across multiple supplier workflows. Built and maintained backend automation pipelines for OCR-driven document processing, integrating Tesseract OCR, Gemini, and enterprise business workflows. Collaborated closely with React frontend developers to design, implement, and optimize secure REST APIs for enterprise web applications. Investigated and resolved production issues, optimized SQL queries, improved backend reliability, and participated directly in enterprise client discussions and solution delivery.

Python Backend Developer

HiPER Automotive

Sep 2025 - Present

Designed and developed scalable backend services and REST APIs using FastAPI and Django for internal and customer-facing dashboards. Architected backend components with caching and asynchronous processing to improve application performance and scalability. Managed and deployed applications on AWS (EC2, S3, CloudFront) using Docker, ensuring reliable production environments. Collaborated with frontend developers to deliver secure, high-performance API integrations. Maintained production systems through troubleshooting, bug fixes, and performance optimization.