20+ yrs
engineering leadership
$500M+
managed infrastructure
40+
platforms architected
Targeted advisory engagements
Direct principal-level consulting structured for discrete technical evaluations, interim executive mandates, or multi-quarter architecture modernizations.
Architecture Review
Fractional CTO
Systems Modernization
Comprehensive evaluation of distributed systems topology, scalability bottlenecks, security boundaries, and technical debt prior to major capital investment.
Embedded executive stewardship providing engineering governance, organization design, hiring leadership, and board-level technical alignment.
Pragmatic migration strategies for legacy monolithic backends transitioning to event-driven modular services with zero operational downtime.
Enterprise architecture succeeds through disciplined subtraction: establishing unambiguous component boundaries, enforcing rigorous data contracts, and eliminating speculative complexity before it hardens into legacy debt.
Raj A. Chellappan, Principal Advisor
Select a working session to review current system architecture, diagnose engineering constraints, or evaluate fractional executive requirements.