Ramprakash Chelliah

Multi-tenant HRMS &payroll SaaS platformon .NET, MongoDB, Redis and microservices, serving 1, 000+ users across 10+ enterprise
clients in manufacturing, retail and services.
• Owned a core module of a multi-tenant HRMS SaaS platform end-to-end — from requirement analysis and
database/domain design through CQRS-based implementation and development — using .NET (3.1/6/8), MongoDB,
Redis and a microservices-based architecture, supporting 1, 000+ users across 10+ enterprise clients.
• Developed an automated payroll engine with statutory compliance (PF, ESI, TDS) and configurable tax rules, cutting
manual payroll processing effort by roughly 60% and reducing calculation errors.
• Built a geo-fencing attendance system with real-time shift scheduling, improving field-staff attendance tracking
accuracy by around 35%.
• Designed a configurable multi-level approval workflow engine with auto-escalation and dynamic routing, reducing
HR approval turnaround time by roughly 50%.
• Used CQRS and event-driven patterns to separate read and write paths for key modules, supporting audit logging
for compliance and improving scalability of high-traffic endpoints.
• Improved API response times by around 30% and reduced database load by approximately 40% through Redis
caching and MongoDB aggregation pipeline optimisation.
• Maintained production APIs with consistent uptime above 99.9% and average response times under 200ms across
endpoints serving the Angular front end and third-party ERP integrations.
• Led a team of 5+ developers: reviewed pull requests, set Clean Architecture / SOLID standards, and mentored junior
engineers on design patterns and debugging.
• Managed CI/CD pipelines and release coordination, with post-deployment monitoring and no critical production
failures over the past 2 years.
• Resolved production incidents with formal root-cause-analysis documentation (most resolved within 2 hours), and
worked in Agile/Scrum with QA, DevOps and business stakeholders across 5 years of delivery.