Karthika U
Backend Developer
Python • Django • Django REST Framework • MySQL • Celery • Redis
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Professional Summary
Backend Developer specializing in Python and Django REST, building production-grade distributed systems. Transitioning from Healthcare Operations into Software Engineering with 3+ years of quality analysis, debugging, and process optimization experience now applied to scalable backend architecture.
Built production-style systems including an AI-powered lead intelligence engine, movie ticket booking platform, and Splitwise expense sharing system. Strong foundation in REST APIs, message brokers, database modeling, and distributed backend design.
Currently Seeking
Backend Developer / Django Developer roles in innovative tech companies
Location: Bengaluru, India
Contact: +91-9361692611
Technical Expertise
Core Technologies
Python, Django, Django REST Framework, Celery, MySQL, Redis
Backend Skills
REST APIs, Async Workers, ORM, Middleware, Message Brokers
Cloud & Tools
AWS (EC2, S3, RDS), Git, Postman, Database Modeling
Design Concepts
LLD, OOP, SOLID Principles, Distributed Systems Architecture
AI Lead Intelligence Engine
Featured Project
Production-Grade
Built a distributed backend system to asynchronously ingest, enrich, and analyze business leads using Django REST APIs, Celery workers, and Redis message queues. Designed non-blocking background pipelines orchestrating web enrichment and AI analysis.
40%
Latency Reduction
Through asynchronous processing
100%
Idempotent
Task execution prevents duplicates
01
Lead Ingestion
NEW state with initial data capture
02
Enrichment Pipeline
ENRICHING via Tavily web scraping
03
AI Analysis
ENRICHED with Groq LLM scoring
04
Delivery
COMPLETED with SMTP reports
05
Client → Django API → Redis Queue → Celery Workers → AI Service → DB → Email Service
Movie Ticket Booking Backend
Database Architecture
Built relational schema covering Users, Movies, Shows, Seats, and Bookings entities using Django ORM with optimized queries.
REST API Design
Designed transactional booking workflows with availability checks preventing double bookings and ensuring data consistency.
Clean Architecture
Applied service-layer architecture for separation of concerns and maintainable backend design patterns.
Expense Sharing & Settlement System
Splitwise Clone Backend
Built ledger-based expense sharing engine with balance aggregation logic calculating "who owes whom." Designed group expense APIs and settlement flows with optimized relational data modeling for multi-user expense tracking.
Ledger System
Balance aggregation across users
Group Expenses
Multi-user tracking and settlement
Optimized Queries
Complex Django ORM relationships
URL Shortener with Security
Short-Link Service
URL redirection with click analytics functionality
Rate Limiting
IP-based middleware preventing API abuse
Abuse Detection
Rule-based system identifying malicious users
Implemented custom Django Middleware for security and tested REST APIs returning JSON responses using Postman for comprehensive validation.
Professional Experience
Quality Control Analyst
Omega Healthcare Management Services • Bengaluru, India • April 2022 – January 2026
15%
Efficiency Gain
Workflow optimization improvement
99%
SLA Compliance
Maintained service standards
10%
Process Improvement
Data analysis efficiency boost
Healthcare Operations
  • Optimized system workflows identifying architectural bottlenecks
  • Analyzed large operational datasets using internal reporting tools
  • Translated business workflows into technical specifications for 3 automation processes
  • Performed root-cause analysis on rejected claims
Backend Engineering (Parallel)
  • Designed and deployed backend systems using Python, Django, and REST APIs
  • Built production-style platforms including AI Lead Engine and Booking System
  • Practiced database schema design and Low-Level Design principles
Education & Achievements
Scaler
Software Development & Problem Solving Specialization (2024)
Bachelor of Science
Electronics & Communication, V.V. Vanniaperumal College (2018) • CGPA: 8.7
Department Topper
Best Outgoing Student Award
Gold Medal
Mathematics Excellence
Transferable Skills
Analytical Thinking
Root cause debugging and systematic problem-solving approach from healthcare operations
Process Optimization
Identifying bottlenecks and improving system efficiency through data-driven insights
Attention to Detail
Ensuring code quality, data consistency, and maintaining high standards in deliverables
Stakeholder Communication
Translating technical concepts and documenting requirements for diverse audiences
Ready to contribute to your backend engineering team. Let's build scalable, production-grade systems together.
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