Aswin Ranjithkumar

Aswin Ranjithkumar

Java Full Stack Developer
India
Tamil, English

About Me

Senior Full Stack Developer and CIAM Architect with 7+ years of experience designing, developing, and securing enterprise-scale applications across banking, healthcare, retail, and logistics domains. Expertise in Custome…

Experience

Associate – Projects | Senior CIAM Engineer & Full Stack Developer

Cognizant Technology Solutions – India
Sep 2022 - Present · 3 years 10 months

Designed and implemented enterprise-grade CIAM architecture using PingFederate supporting OAuth 2.0, OIDC, and SAML for secure customer authentication across banking applications.
Developed and secured Java Spring Boot microservices enabling scalable authentication, authorization, and API integrations.
Built secure API-to-API communication frameworks using client credentials flow, token validation, and policy-based access control.
Architected authentication solutions for web applications, SPAs, and backend services supporting millions of banking customers.
Implemented SSO, MFA, and adaptive authentication to strengthen fraud prevention and access security.
Collaborated with frontend and backend teams to integrate Angular applications with secure CIAM workflows and token-based authentication.
Supported AWS-based CIAM services using Lambda, S3, and DynamoDB to ensure scalable and reliable authentication systems.
Automated operational workflows and deployment activities using Jira, ServiceNow, Jenkins, and GitHub Actions.
Executed production deployments and CI/CD activities with zero escalations while ensuring compliance with banking security standards.
Mentored junior engineers on CIAM best practices, secure coding standards, and microservices architecture.

Associate – Projects | Senior CIAM Engineer & Full Stack Developer

Cognizant Technology Solutions – India · Coimbatore, India
Aug 2022 - Present · 3 years 10 months

Designed and implemented enterprise-grade CIAM architecture using PingFederate supporting OAuth 2.0, OIDC, and SAML for secure customer authentication across banking applications., Developed and secured Java Spring Boot microservices enabling scalable authentication, authorization, and API integrations., Built secure API-to-API communication frameworks using client credentials flow, token validation, and policy-based access control., Architected authentication solutions for web applications, SPAs, and backend services supporting millions of banking customers., Implemented SSO, MFA, and adaptive authentication to strengthen fraud prevention and access security., Collaborated with frontend and backend teams to integrate Angular applications with secure CIAM workflows and token-based authentication., Supported AWS-based CIAM services using Lambda, S3, and DynamoDB to ensure scalable and reliable authentication systems., Automated operational workflows and deployment activities using Jira, ServiceNow, Jenkins, and GitHub Actions., Executed production deployments and CI/CD activities with zero escalations while ensuring compliance with banking security standards., Mentored junior engineers on CIAM best practices, secure coding standards, and microservices architecture.

Technology Analyst | Java Full Stack Developer

Infosys Limited – India
May 2019 - Aug 2022 · 3 years 3 months

Developed and maintained Spring Boot microservices supporting healthcare appointment scheduling, patient records, and prescription management.
Designed and implemented secure REST APIs for integration with third-party healthcare systems.
Built responsive and reusable frontend components using Angular, TypeScript, JavaScript, HTML, and CSS.
Enhanced application performance and scalability by modernizing legacy applications into cloud-native microservices.
Deployed and managed applications on AWS ensuring high availability, scalability, and regulatory compliance.
Implemented CI/CD pipelines using Jenkins and GitHub Actions reducing deployment downtime and improving release efficiency.
Followed HIPAA-compliant security practices including secure access controls, encryption, and authentication standards.
Collaborated with cross-functional teams in Agile environments to deliver secure and scalable healthcare applications.

Technology Analyst | Java Full Stack Developer

Infosys Limited – India
May 2019 - Aug 2022 · 3 years 3 months

Developed and maintained Spring Boot microservices supporting healthcare appointment scheduling, patient records, and prescription management., Designed and implemented secure REST APIs for integration with third-party healthcare systems., Built responsive and reusable frontend components using Angular, TypeScript, JavaScript, HTML, and CSS., Enhanced application performance and scalability by modernizing legacy applications into cloud-native microservices., Deployed and managed applications on AWS ensuring high availability, scalability, and regulatory compliance., Implemented CI/CD pipelines using Jenkins and GitHub Actions reducing deployment downtime and improving release efficiency., Followed HIPAA-compliant security practices including secure access controls, encryption, and authentication standards., Collaborated with cross-functional teams in Agile environments to deliver secure and scalable healthcare applications.

Skills

Hibernate Java Jira MySQL GitLab JavaScript Microservices Angular Docker HTML5 Jenkins Kafka ServiceNow PingFederate OAuth 2.0 OpenID Connect (OIDC) SAML Spring Boot REST APIs Spring Cloud TypeScript CSS3 AWS (Lambda S3 DynamoDB) GitHub Actions CI/CD Pipelines IntelliJ IDEA VS Code Copilot PKCE SSO MFA API Security Zero Trust Concepts Token Lifecycle Management AWS Lambda S3 DynamoDB GitHub Spring Boot microservices Agile HIPAA
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