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I am a Senior Software Engineer who thrives on building robust Java-based backend and cloud systems. I specialize in designing microservices, event-driven architectures with Spring Boot and Kafka, and delivering scalable, secure solutions on AWS, GCP, and Azure. I’ve modernized enterprise platforms in healthcare, finance, and telecom, focusing on reliability, compliance, and measurable business impact.\n\nI enjoy collaborating across product, security, and operations to turn complex regulatory and operational requirements into practical technical controls, drive automation via IaC and CI/CD, and foster a culture of incident learning and continuous improvement.…I am a Senior Software Engineer who thrives on building robust Java-based backend and cloud systems. I specialize in designing microservices, event-driven architectures with Spring Boot and Kafka, and delivering scalable, secure solutions on AWS, GCP, and Azure. I’ve modernized enterprise platforms in healthcare, finance, and telecom, focusing on reliability, compliance, and measurable business impact.\n\nI enjoy collaborating across product, security, and operations to turn complex regulatory and operational requirements into practical technical controls, drive automation via IaC and CI/CD, and foster a culture of incident learning and continuous improvement.

Adalat C Khan

Web Developer, Full Stack Developer, Programmer, +2

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I am a Senior Software Engineer who thrives on building robust Java-based backend and cloud systems. I specialize in designing microservices, event-driven architectures with Spring Boot and Kafka, and delivering scalable, secure solutions on AWS, GCP, and Azure. I’ve modernized enterprise platforms in healthcare, finance, and telecom, focusing on reliability, compliance, and measurable business impact.\n\nI enjoy collaborating across product, security, and operations to turn complex regulatory and operational requirements into practical technical controls, drive automation via IaC and CI/CD, and foster a culture of incident learning and continuous improvement.…I am a Senior Software Engineer who thrives on building robust Java-based backend and cloud systems. I specialize in designing microservices, event-driven architectures with Spring Boot and Kafka, and delivering scalable, secure solutions on AWS, GCP, and Azure. I’ve modernized enterprise platforms in healthcare, finance, and telecom, focusing on reliability, compliance, and measurable business impact.\n\nI enjoy collaborating across product, security, and operations to turn complex regulatory and operational requirements into practical technical controls, drive automation via IaC and CI/CD, and foster a culture of incident learning and continuous improvement.

Available to hire

I am a Senior Software Engineer who thrives on building robust Java-based backend and cloud systems. I specialize in designing microservices, event-driven architectures with Spring Boot and Kafka, and delivering scalable, secure solutions on AWS, GCP, and Azure. I’ve modernized enterprise platforms in healthcare, finance, and telecom, focusing on reliability, compliance, and measurable business impact.\n\nI enjoy collaborating across product, security, and operations to turn complex regulatory and operational requirements into practical technical controls, drive automation via IaC and CI/CD, and foster a culture of incident learning and continuous improvement.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Javanese

Fluent

Work Experience

Senior Software Engineer / Tech Lead at Change Healthcare (Optum)

January 1, 2020 - November 1, 2025

Led architecture and delivery of ClaimsIQ, a HIPAA-compliant, cloud-native platform on AWS for major national payers, enabling real-time fraud detection and secure payer-provider connections. Transformed monolithic adjudication into modular, event-driven microservices using Java 17, Spring Boot, Kafka, and AWS EKS, delivering 10x spike scalability with complete audit traceability. Implemented domain-driven design and CQRS to reduce service overlap and rollback incidents across environments. Optimized claim-validation pipelines with asynchronous workflows and caching, lowering processing latency by 35% and maintaining SLA parity. Embedded HIPAA validation into service flows with Spring Security, JWT, and Cognito; automated compliance checks, eliminating manual steps. Modernized payer/provider portals with React/Next.js, improving usability. Automated infrastructure with Terraform, Helm, and Argo CD, cutting environment provisioning from days to hours and standardizing configurations. Es

Senior Software Consultant / AI Solution Developer at Quantiphi

June 1, 2016 - December 1, 2019

Modernized Wells Fargo's commercial loan origination and servicing applications by rebuilding core workflows using Spring Boot, Angular, and Kafka-based integration. Replaced batch processing with real-time event streams to improve data integrity, compliance, and customer experience. Unified core loan orchestration with a single pipeline; introduced event-driven synchronization via Kafka and ActiveMQ; refined persistence and caching with Hibernate and connection pooling; built configurable workflow APIs driven by metadata to add new products without code changes. Improved UI with Angular 6; implemented secure external API integrations using OAuth 2.0; developed CI/CD pipelines with Jenkins, GitLab, and Docker with automated smoke tests and rollback gates; upgraded legacy SOAP to REST with Swagger; implemented centralized logging/audit using ELK with correlation IDs; mentored junior developers and ensured compliance during releases.

Software Consultant / Cloud & Backend Engineer at Slalom Consulting

June 1, 2014 - May 1, 2016

Cloud modernization and integration for enterprise clients, including Penn Medicine. Built cloud-native backend systems on AWS and Azure, delivering scalable APIs, data pipelines, and automation frameworks to replace outdated on-premise integrations. Designed and launched microservice architectures on AWS using Spring Boot, Docker, and Kubernetes; developed high-throughput integration services with AWS Lambda, API Gateway, and SQS for real-time data exchange. Automated cloud provisioning and release workflows with Terraform, CloudFormation, and Jenkins. Revamped backend data ingestion into event-driven architectures with Kafka and AWS SNS/SQS; implemented centralized configuration and secrets management with Parameter Store and Vault. Built a reusable API foundation with Spring Boot and Swagger/OpenAPI; integrated AWS Glue and Redshift pipelines for analytics; introduced cost-optimization strategies and enhanced observability with Prometheus and Grafana.

Java Full Stack Developer at Comcast

January 1, 2012 - May 1, 2014

Modernized Comcast’s customer management and streaming backend platforms. Built Java-based microservices, real-time event integrations, and distributed caching to boost reliability and responsiveness for millions of users. Implemented Kafka-based pipelines for real-time subscription updates, Redis/Hazelcast caching to reduce API latency, OAuth2/JWT service authentication, and Hystrix for resilience. Built monitoring dashboards with Prometheus/Grafana, supported migration to Docker/Kubernetes, and established clear API contracts with frontend teams. Contributed to planning and release reviews to align with SLA goals and customer activation throughput.