Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Naseer Ahmad, a Senior Full Stack Java Developer with 7+ years of experience delivering secure, scalable enterprise applications in Healthcare, Financial Services, and Retail. I design cloud-native microservices with robust fault tolerance and horizontal scalability, build RESTful and GraphQL APIs, and create modern UIs with React and Angular. I’m proficient with AWS/Azure/GCP, Docker and Kubernetes, IaC with Terraform and CloudFormation, and observability tooling. I thrive in cross-functional teams, mentor junior developers, and routinely translate complex business needs into reliable, compliant software solutions.…Hi, I’m Naseer Ahmad, a Senior Full Stack Java Developer with 7+ years of experience delivering secure, scalable enterprise applications in Healthcare, Financial Services, and Retail. I design cloud-native microservices with robust fault tolerance and horizontal scalability, build RESTful and GraphQL APIs, and create modern UIs with React and Angular. I’m proficient with AWS/Azure/GCP, Docker and Kubernetes, IaC with Terraform and CloudFormation, and observability tooling. I thrive in cross-functional teams, mentor junior developers, and routinely translate complex business needs into reliable, compliant software solutions.

Naseer Ahmad

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





Hi, I’m Naseer Ahmad, a Senior Full Stack Java Developer with 7+ years of experience delivering secure, scalable enterprise applications in Healthcare, Financial Services, and Retail. I design cloud-native microservices with robust fault tolerance and horizontal scalability, build RESTful and GraphQL APIs, and create modern UIs with React and Angular. I’m proficient with AWS/Azure/GCP, Docker and Kubernetes, IaC with Terraform and CloudFormation, and observability tooling. I thrive in cross-functional teams, mentor junior developers, and routinely translate complex business needs into reliable, compliant software solutions.…Hi, I’m Naseer Ahmad, a Senior Full Stack Java Developer with 7+ years of experience delivering secure, scalable enterprise applications in Healthcare, Financial Services, and Retail. I design cloud-native microservices with robust fault tolerance and horizontal scalability, build RESTful and GraphQL APIs, and create modern UIs with React and Angular. I’m proficient with AWS/Azure/GCP, Docker and Kubernetes, IaC with Terraform and CloudFormation, and observability tooling. I thrive in cross-functional teams, mentor junior developers, and routinely translate complex business needs into reliable, compliant software solutions.

Available to hire

Hi, I’m Naseer Ahmad, a Senior Full Stack Java Developer with 7+ years of experience delivering secure, scalable enterprise applications in Healthcare, Financial Services, and Retail. I design cloud-native microservices with robust fault tolerance and horizontal scalability, build RESTful and GraphQL APIs, and create modern UIs with React and Angular.

I’m proficient with AWS/Azure/GCP, Docker and Kubernetes, IaC with Terraform and CloudFormation, and observability tooling. I thrive in cross-functional teams, mentor junior developers, and routinely translate complex business needs into reliable, compliant software solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Work Experience

Senior Java Developer - Full Stack at Optum (United Health Group)

February 1, 2023 - Present

Designed and developed enterprise-scale healthcare and financial applications using Java 11/17 and Spring Boot, ensuring secure data processing, regulatory compliance, and high system reliability in production environments. Architected and implemented cloud-native microservices following domain-driven design (DDD) principles, enabling loose coupling, scalability, and faster feature delivery across distributed teams. Built and exposed RESTful APIs and GraphQL services with proper versioning, validation, and error handling to support seamless integration with internal platforms and third-party systems.

Senior Java Developer - Full Stack at Citizens Financial Group

May 1, 2021 - January 1, 2023

Designed and developed high-volume financial transaction processing systems using Java 8/11 and Spring Boot, modernizing legacy platforms by decomposing monoliths into microservices, implementing event-driven architectures with Kafka and RabbitMQ, and building responsive UI with Angular/TypeScript.

Java Developer at Best Buy

October 1, 2019 - May 1, 2021

Designed and developed backend services using Java and Spring MVC/Spring Boot to support core e-commerce workflows, built RESTful APIs, integrated with payment gateways, implemented RBAC, and contributed to cloud deployments on AWS. Led CI pipelines and introduced ELK/Datadog monitoring.