Sidharth P

Senior Backend Engineer with 7 years of experience designing and scaling high-availability backend, cloud-native systems for a B2B SaaS platform at Clootrack. Specialized in building robust APIs, distributed task processing systems, and multi-tenant architectures. Strong focus on performance optimization, data consistency, and reliability under scale, with hands-on experience in Python, Django, Celery, and PostgreSQL.

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Experience

Software Development Engineer 3

Clootrack Software Labs Pvt Ltd

Oct 2022 — Present

Built a scalable authentication backend using JWT-based architecture, supporting MFA (TOTP + email OTP) and federated OIDC login, and replaced Azure AD B2C with self-hosted Zitadel to enable full control over auth flows.
Designed and built a data processing backend using Django and Celery to ingest and asynchronously process Excel datasets; implemented data validation, transformation pipelines, and integrated with data science workflows to deliver regression-based insights with dynamic recalculation based on user inputs.
Reduced infrastructure cost by ~50% (₹60L → ₹30L/month) by redesigning backend service deployment and resource utilization strategy; implemented autoscaling, optimized service workloads, and eliminated inefficient compute patterns across distributed systems.
Architected a multi-tenant backend platform handling tenant isolation, provisioning workflows, and resource orchestration on Azure; reduced onboarding time from 2 days to 2 hours by building automated backend workflows and APIs, improving system reliability, and eliminating manual errors.
Designed and operated a containerized microservices-based backend system using Docker and Kubernetes; implemented CI/CD pipelines using GitHub Actions, enabling deployments with zero downtime.

Software Development Engineer

Clootrack Software Labs Pvt Ltd

Nov 2019 — Sept 2022

Designed and implemented asynchronous task processing using Celery and Redis, decoupling heavy operations from the request lifecycle and improving API response times; handled ~200 background jobs/day with monitoring via Flower for queue health and failure visibility.
Optimized database queries and indexing strategies to reduce latency under high load; implemented Redis caching with TTL and invalidation to reduce database pressure and improve API response times.
Improved backend system reliability by implementing load balancing and traffic routing strategies; reduced error rates and enabled horizontal scaling to handle 5× peak traffic.
Strengthened backend system reliability and data safety by redesigning network architecture with private VPC, enforcing least-privilege IAM, and implementing automated backups (1-hour RPO) with a tested disaster recovery workflow.
Built a distributed web crawler with autoscaling and a data processing pipeline; optimized crawling, reducing end-to-end processing time by 40% while maintaining stable latency under traffic spikes.

Software Developer Intern

Clootrack Software Labs Pvt Ltd

May 2019 — Oct 2019

Built RESTful APIs using Django REST Framework for 3 core platform features, integrated with frontend and third-party services.
Built a shared Python library to standardize health checks across microservices, exposing readiness and liveness endpoints with dependency checks (DB, Redis, Dapr).

Skills

Languages

Python · JavaScript

Frameworks

Django · FastAPI · REST APIs · Celery

Cloud

GCP · Microsoft Azure · AWS

DevOps & Infra

Docker · Kubernetes · Terraform · GitHub Actions

Databases

PostgreSQL · MySQL · Redis

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