Headline

Engineer and Architect - Distributed Systems

About

I'm a Principal Engineer and Architect with 20 plus years spent building the backend systems that move money, secure identity, and scale to billions of requests a day — and I still love getting hands-on with the code. I've led architecture for platforms where correctness, security, and uptime are non-negotiable: PayPal's Billing & Subscriptions platform (~30% of PayPal's payment volume, $200B+ annual TPV, ~1B API calls/day) and JPMorgan Chase's global payment clearing across 50+ clearing houses (8× throughput growth, 50% P95 latency reduction). Most recently in identity, I worked on enterprise IDaaS at Ping Identity — re-architecting identity provisioning, directory synchronization, and Joiner–Mover–Leaver access-lifecycle workflows into event-driven microservices on OIDC and SCIM, and owning the shared platform library behind an 80+ service fleet. I pair that with a strong application-security mindset: OAuth2/OIDC, SAML, RBAC, OWASP, encryption, secure-by-design architecture, and fleet-wide CVE remediation. I've built and led front-end applications in JavaScript and Angular across Sapient, Expedia, JPMorgan, and PayPal, which gives me genuine full-stack range. Across payments, identity, travel, telecom, e-commerce, and robotics, I've repeatedly gone from zero to deep domain expertise in a short time — a fast learner who becomes productive in unfamiliar problem spaces quickly. What I do best: distributed and event-driven systems (Kafka, idempotency, saga, reconciliation, fault tolerance), Java/Spring at scale, payments and identity platforms — and being a force multiplier, building the reusable frameworks and standards that make whole engineering organizations faster. Most recently I co-founded an early-stage e-commerce SaaS startup, architecting the platform end-to-end while going deep on AI/ML — building retrieval-augmented (RAG) recommendation and model-routing capabilities. I'm energized by hard, large-scale technical problems and by mentoring the engineers around me. Always happy to connect with people building ambitious platforms. Core: Java · Spring Boot · Distributed Systems · Kafka · Microservices · Payments · IDaaS & Provisioning · Application Security · JavaScript/Angular · AWS/GCP · Kubernetes · Platform Architecture

Location

Greater Bengaluru Area

AI stack

claude code

codex

github copilot

langchain

langgraph

mcp

Work experience

Principal Software Engineer at Ping Identity, Oct 2023 - Jul 2025 · 1 yr 10 mos, Hybrid, • Led multiple initiatives on the SaaS-based identity platform, strengthening provisioning, platform services, reporting dashboards, and operations portals. • Designed group provisioning integrations with Active Directory, AWS, and other SCIM-compliant applications. • Delivered performance improvements by upgrading Java + Spring Boot and rewriting Cassandra data layers for platform services.

Senior Staff Software Engineer at PayPal, Apr 2022 - May 2023 · 1 yr 2 mos, 1. Led architectural transformation of PayPal's Billing Agreements & Subscriptions platform underpinning ~30% of PayPal's payment value, $200B+ annual TPV, ~1B API calls/day — consolidating multiple legacy APIs into a unified platform. 1. Redesigned consistency models, shifting non-critical flows to eventual consistency to unlock 10X scalability without compromising financial correctness; modelled recurring-charge / dunning as a saga with forward and backward recovery. 1. Partnered with product and engineering leadership on API modernization, tech-debt reduction, and reliability strategy.

Sr Staff Engineer at PayPal, Apr 2022 - May 2023 · 1 yr 2 mos, Bengaluru, Karnataka, India, As the Principal Architect for the Billing Agreement and Subscriptions products I •Led the design and implementation of features, serving millions of consumers worldwide. •Defined the long-term architecture for Billing & Subscription APIs, simplifying multiple legacy versions while improving reliability, observability, and security. •Transitioned systems to eventual consistency, enabling them to scale to ~1B API calls/day and 150 plus billion dollars TPV annually.

Vice President, Principal engineer and Architect at JPMorgan Chase & Co., Oct 2017 - Apr 2022 · 4 yrs 7 mos, Bengaluru Area, India, • Designed and delivered gateway services integrating with 10+ real-time payment systems (e.g., Faster Payments, SEPA Instant, RTP, IMPS-india) and 50+ high-value & low-value clearing systems worldwide. • Supported payment flows exceeding $12 Trillion annually across multiple markets. • Built reusable components for authentication, messaging, file processing, and payment templates, used across 20+ teams. • Spearheaded JVM + SQL tuning, achieving an 8x TPS increase and 50% reduction in latency (P95). This role gave me deep expertise in building and operating mission-critical, high-scale systems.

Vice President at JPMorgan Chase & Co., Oct 2017 - Apr 2022 · 4 yrs 7 mos, 1. Led architecture for the global payment clearing platform interfacing with 50+ clearing houses — a distributed, event-driven core with fault tolerance, regional failover, and consistent state across the payment lifecycle. 1. Achieved 8X throughput (TPS) growth and 50% P95 latency reduction through flow redesign, SQL optimization, and JVM tuning. 1. Designed the reliability spine with no distributed transactions by design — transactional outbox, end-to-end idempotency keys, saga-style reversals, and three-layer reconciliation for provable completeness. 1. Enabled parallel development of 20+ gateway services via an inner-sourcing model with reusable auth, messaging, and observability components.

Software Engineer at Expedia Group, Sep 2015 - Apr 2017 · 1 yr 8 mos, 1. Drove monolith-to-microservices transformation on AWS; designed a high-performance rule engine evaluating 100K+ rules/sec for flight pricing and booking, with auto-scaling and observability (Prometheus, Grafana, Micrometer) reducing P95 latency to 300ms.

Software Dev Engineer at Expedia Group, Sep 2015 - Apr 2017 · 1 yr 8 mos, Gurugram, Haryana, India

Education

B.Tech, Computer Engineering, Aligarh muslim university

Public links

github: https://github.com/savi0909