Vimal

Results-driven Backend Engineer with 3.6+ years building production-grade REST APIs, microservices, and SaaS platform services using Python, Django, Flask, and FastAPI. Proven track record delivering 75+ CRUD microservices, cutting deployment times by 87%, and integrating AI/RAG pipelines that reduced manual effort by 60%. Deep experience with CI/CD, TDD, containerization, and cloud deployment across fintech, emergency response, and data infrastructure domains.

Senior Python Developer – Backend Engineer at Togglr Solutions Pvt. Ltd. (2025-02 – Present)

Data Platform

• Architected a multi-service API Gateway on Django/FastAPI for 10+ internal SaaS platform services — centralized JWT validation and load-aware routing reduced inter-service latency by ~30%.
• Designed PostgreSQL schemas for a unified Lakehouse ecosystem managing 100K+ records; optimized indexing cut query response times by 40%.
• Implemented RabbitMQ-based async event queues processing 50K+ daily events across distributed components with zero message loss.
• Led architectural reviews in an Agile team of 6+ engineers, delivering 3 modular platform releases on schedule via Azure DevOps CI/CD pipelines.
• Enforced JWT + OAuth2-based access control across all API endpoints, achieving 100% compliance with platform-wide security requirements.

Python API Developer – Backend Engineer at Togglr Solutions (2024-08 – 2025-02)

Apa Bandhu Emergency Response

• Delivered 75+ CRUD microservices via a centralized Django/FastAPI Gateway powering a mobile SaaS emergency dispatch platform with sub-200ms median response time.
• Designed 12 SQL Server data models with full migration support and index optimization — reduced critical query execution time by 35%.
• Integrated Azure OpenAI + RAG pipeline with LangChain for contextual data retrieval, cutting manual query effort by 60% and enabling AI-assisted emergency content generation.
• Built Azure Service Bus + RabbitMQ messaging layer processing 20K+ events/day with 99.9% delivery reliability for real-time field responder location updates.
• Containerized 8 backend services with Docker Compose — reduced deployment setup time from 4 hours to 30 minutes (87% reduction).
• Authored Swagger/OpenAPI specs + Postman collections, reducing QA integration time by 50% across 3 sprint cycles.

Software Developer – Backend Engineer at Togglr Solutions (2023-10 – 2024-08)

Togglr Migrate & Safe

• Built and maintained a full-stack SaaS application (React + Python/Flask/Django) serving 30+ internal ops users with 85%+ unit test coverage via Pytest (TDD).
• Developed async endpoints using Python asyncio, improving data retrieval throughput by 45% for nonblocking API calls under high concurrency.
• Secured 20+ RESTful endpoints with JWT + OAuth2 + TLS across 2 production environments — zero unauthorized access incidents post-deployment.
• Contributed to a GenAI analytics module using LLM APIs with prompt engineering, adopted by 4 internal product teams for predictive platform insights.
• Integrated Swagger/OpenAPI for automated documentation, reducing developer onboarding time by 3 days on average.

Software Developer at Togglr Solutions (2022-10 – 2023-10)

Consumables Management System

• Delivered 10+ RESTful CRUD endpoints (inventory, orders, audit-trail) achieving 98% uptime over a 12-month production period.
• Containerized services with Docker & Docker Compose — reduced environment-related bugs by 70%.
• Automated CI/CD pipeline in Azure DevOps (Docker build → Pytest → zero-downtime deploy), cutting release cycle from 3 days to 4 hours.
• Maintained 90%+ Pytest code coverage with TDD, reducing production defect rate by 60%.

Bachelor of Engineering in Electrical – Tagore Engineering College (2021)