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I am a results-driven Full Stack Developer with about 5 years of experience building cloud-native FinTech platforms using Java, Spring Boot, and AWS. I specialize in end-to-end development across the payment stack—from real-time microservices to global rails (SWIFT, Fedwire, RippleNet) and AML/KYC pipelines. I’ve delivered sub-200 ms API responses, slashed processing times by up to 80%, and reduced compliance false positives by 30%.\n\nI thrive in cross-functional teams and have strong cloud credentials in AWS and Azure. I routinely collaborate with engineering, compliance, and product teams to architect scalable, compliant solutions and measurable business outcomes. I’m proficient in React dashboards, microservices patterns, and resilient operations.…I am a results-driven Full Stack Developer with about 5 years of experience building cloud-native FinTech platforms using Java, Spring Boot, and AWS. I specialize in end-to-end development across the payment stack—from real-time microservices to global rails (SWIFT, Fedwire, RippleNet) and AML/KYC pipelines. I’ve delivered sub-200 ms API responses, slashed processing times by up to 80%, and reduced compliance false positives by 30%.\n\nI thrive in cross-functional teams and have strong cloud credentials in AWS and Azure. I routinely collaborate with engineering, compliance, and product teams to architect scalable, compliant solutions and measurable business outcomes. I’m proficient in React dashboards, microservices patterns, and resilient operations.

Shiva Kumar

Full Stack Developer, Web Developer, Front-End Developer, +2

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I am a results-driven Full Stack Developer with about 5 years of experience building cloud-native FinTech platforms using Java, Spring Boot, and AWS. I specialize in end-to-end development across the payment stack—from real-time microservices to global rails (SWIFT, Fedwire, RippleNet) and AML/KYC pipelines. I’ve delivered sub-200 ms API responses, slashed processing times by up to 80%, and reduced compliance false positives by 30%.\n\nI thrive in cross-functional teams and have strong cloud credentials in AWS and Azure. I routinely collaborate with engineering, compliance, and product teams to architect scalable, compliant solutions and measurable business outcomes. I’m proficient in React dashboards, microservices patterns, and resilient operations.…I am a results-driven Full Stack Developer with about 5 years of experience building cloud-native FinTech platforms using Java, Spring Boot, and AWS. I specialize in end-to-end development across the payment stack—from real-time microservices to global rails (SWIFT, Fedwire, RippleNet) and AML/KYC pipelines. I’ve delivered sub-200 ms API responses, slashed processing times by up to 80%, and reduced compliance false positives by 30%.\n\nI thrive in cross-functional teams and have strong cloud credentials in AWS and Azure. I routinely collaborate with engineering, compliance, and product teams to architect scalable, compliant solutions and measurable business outcomes. I’m proficient in React dashboards, microservices patterns, and resilient operations.

Available to hire

I am a results-driven Full Stack Developer with about 5 years of experience building cloud-native FinTech platforms using Java, Spring Boot, and AWS. I specialize in end-to-end development across the payment stack—from real-time microservices to global rails (SWIFT, Fedwire, RippleNet) and AML/KYC pipelines. I’ve delivered sub-200 ms API responses, slashed processing times by up to 80%, and reduced compliance false positives by 30%.\n\nI thrive in cross-functional teams and have strong cloud credentials in AWS and Azure. I routinely collaborate with engineering, compliance, and product teams to architect scalable, compliant solutions and measurable business outcomes. I’m proficient in React dashboards, microservices patterns, and resilient operations.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

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Expert

Expert

Language

English

Fluent

Work Experience

Full Stack Developer at Citigroup

May 1, 2024 - Present

Architected reactive payment microservices using Java 17, Spring WebFlux, and Kafka to process 5M+ daily transactions; settlement under 5 minutes via intelligent routing, reducing latency by 60% vs legacy batch. Designed and integrated global payment rails (SWIFT gpi, Fedwire, RippleNet) with optimized multi-rail routing to cut cross-border costs by 18%. Built liquidity optimization services with PostgreSQL, Cassandra, and ML forecasting APIs, improving fund utilization by 25% and enabling proactive overdraft risk mitigation for enterprise clients. Implemented AML/KYC compliance pipelines with NICE Actimize on Azure, reducing false positives by 30% via rule-based and ML validation. Developed React dashboards for real-time monitoring, and optimized performance with Redis, gRPC, Resilience4j; achieved sub-200 ms API responses and 40% fewer system failures.

Software Developer at Mindtree

January 1, 2021 - July 31, 2022

Spearheaded loan origination microservices using Java 11, Spring Boot, Kafka to process 1M+ monthly applications, reducing average approval time by 80% to under 10 minutes. Built credit risk services integrating CIBIL and Experian APIs with Spring Security and JWT authentication, improving decision accuracy by 25% and reducing defaults by 20% via rule-based and ML models. Deployed UIDAI Aadhaar and PAN KYC verification, reducing fraudulent onboarding by 30% and increasing onboarding efficiency. Implemented real-time payment and disbursal flows with UPI Auto Pay and Razorpay, achieving higher transaction success rates with robust retry and idempotency. Streamlined microservices with Redis, MySQL, and AWS (EKS, Lambda), delivering sub-300 ms responses and 99.9% uptime at peak. Championed TDD with 85%+ unit test coverage and reduced post-release defects by 40%.

Software Developer at Hexaware Technologies

June 1, 2019 - December 31, 2020

Developed payment processing services using Java 8, Spring Boot, Hibernate, and JPA to handle 3M+ daily transactions across UPI, IMPS, and NEFT with 35% improvement in processing reliability. Designed a reconciliation engine integrating NPCI UPI and gateway data, reducing transaction mismatches by 60% and improving settlement accuracy by 50% with near real-time reconciliation. Delivered event-driven pipelines using Kafka and ActiveMQ, accelerating reconciliation by 45% and increasing end-to-end visibility by 40% for high-volume digital payments. Integrated payment gateways (Bill Desk, Razorpay) and card networks, increasing transaction success by 30%. Optimized Oracle SQL and Spring Batch jobs, achieving 99.8% uptime and maintaining full audit trails.