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Chintan kalkura

@chintankalkura

Senior backend engineer focused on building services with microservices, clean architecture, and measurable product outcomes in regulated industries.

India

Message

What I'm looking for

I’m looking to build and scale secure services using microservices in cloud-native environments, using clean architecture and relevant design principles for the product at hand. I want ownership from design to deployment, strong engineering quality, and measurable impact in regulated products.

I’m an experienced Senior Backend Engineer and Engineering Lead with over a decade of success building enterprise-grade systems in microservices and cloud-native environments. I’ve delivered backend platforms across healthcare, banking, and retail—balancing reliability, security, and performance with a strong “design to deployment” mindset.

In my recent roles, I architected event-driven onboarding services using Java, Spring Boot, MongoDB, Kafka, and Axon Framework, applying CQRS to streamline KYC, identity verification, and account creation. I delivered an identity verification feature that reduced processing time from 2 weeks to 1 day for 70% of onboarding cases through automation.

I also led secure API platform development for a Gen-AI healthcare assistant, building orchestrator workflows with Azure Durable Functions and integrating Twilio VoIP and Azure Communication Services. Across teams and time zones, I’ve pushed software quality through clean architecture, testing discipline (JUnit/Mockito/TDD), and production-grade observability using Splunk, Kibana, and AppDynamics.

Experience

Work history, roles, and key accomplishments

Current

Senior Engineering Lead

Current

Persistent Systems

Oct 2024 - Present (1 year 6 months)

Architected and delivered backend services and APIs for a retail customer onboarding platform in Wells Fargo(Fintech) implementing CQRS-based event-driven onboarding workflows for KYC, identity verification, and account creation. Built an identity verification and screening capability that reduced processing time from 2 weeks to 1 day for 70% of legal-entity onboarding cases.

Java Spring Boot MongoDB Kafka CQRS Event Sourcing REST APIs Identity Verification KYC

Senior Engineering Lead

Persistent Systems

Oct 2023 - Oct 2024 (1 year)

Spearheaded secure, scalable API platforms for a Gen-AI healthcare assistant, integrating Azure Functions and Cosmos DB with Python-based LLM workflows. Designed an Azure Durable Functions orchestrator for long-running tasks to automate patient notifications via Twilio and Azure Communication Services, and led the Case Management domain to deliver a HIPAA-aligned microservices solution.

Java Azure Functions Cosmos Python Twilio Azure Communication Services Spring Boot Spring Security HIPAA compliance

Software Dev Engineer

Tesco Technology

Aug 2020 - Oct 2022 (2 years 2 months)

Integrated Gift Cards and Cards into Tesco Till using a Java/Spring Boot microservices architecture, reducing reversal transactions by 25% and improving customer satisfaction. Built an event-driven Payments API using Event Sourcing and CQRS to enhance auditability and decouple critical payment services, and reduced application downtime by 20% through KPI-driven technical debt and defect backlog pl

Java Spring Boot Microservices Event Sourcing CQRS Docker Integration Testing CI CD Event Driven Architecture

Senior Software Engineer

Tesco Technology

Jul 2014 - Aug 2020 (6 years 1 month)

Re-architected Loyalty and Payment flows into a centralized enterprise platform using microservices and Domain-Driven Design, improving scalability and maintainability. Reduced fraud check processing time by 50% for e-commerce orders by implementing reactive payment flows with Spring WebFlux and improved observability using Splunk, AppDynamics, and Kibana.