Building secure, scalable enterprise platforms with cloud, microservices, and applied AI.
Tarun Kalwani is a Principal Engineer and Systems Architect with 19+ years of experience designing and modernizing enterprise applications across telecom, airlines, and financial services. His work spans Java, Spring Boot, AWS, microservices, CI/CD, secure SDLC, and GenAI-assisted engineering.
Measured outcomes across enterprise transformation
$9M Annual Savings
Platform consolidation and reduced licensed software dependencies lowered annual operating costs by approximately $9 million.
25% Lower Latency
In-house real-time processing and architecture modernization improved transaction latency by 25% and increased responsiveness for customer journeys.
88% → 98% Success Rate
Modernized transaction flows improved success rates from 88% in monolithic systems to 98% after migration.
Millions of Users
Architectures supported high-volume, multi-brand platforms serving millions of customers across retail and digital channels.
30% Faster Delivery
Consultancy engagements accelerated release cycles by up to 30% through cloud-native modernization, reusable architecture, and delivery governance.
70% Mentee Progression
More than 70% of mentees achieved measurable career progression through promotions, certifications, or movement into leadership responsibilities.
Impact & Measurable Outcomes
Invention & Innovation
Multi-brand prepaid modernization, platform reuse, secure architecture, quantified savings, and compliance improvements.
View innovation evidenceInspiring Others
Mentoring outcomes, observability-led leadership, conference speaking, and measurable engineering progression.
View mentoring impactConsultancy & Advisory
15+ years advising external clients across telecom, airline, and finance, including 50+ team leadership and repeat engagements.
View consultancy workRecognitions at a glance
Selected Verizon recognitions highlighting customer impact, security leadership, collaboration, architecture influence, and program delivery. Visit the Recognitions page for the full details.
Professional Contributions
Enterprise Architecture
Monolith-to-microservices modernization, reusable service design, distributed architecture, and sequence-driven system design.
Security-First Engineering
OWASP-oriented development, Fortify, Black Duck, Tenable, security remediation in CI/CD, and secure engineering governance.
Technical Leadership
Principal-level influence across architecture, delivery, mentoring, conference speaking, reviews, and industry judging.