# Vamsi K M

> Sr. Full Stack Developer | Building Scalable Enterprise Apps | Expert in Java, Spring Boot, Angular, AWS | FinTech & Payments Specialist

Location: Irving, Texas, United States
Profile: https://flows.cv/vamsi

I’m a Senior Java Full Stack Developer with over 10 years of experience architecting, developing, and deploying enterprise-grade solutions across payments, insurance, healthcare, retail, and financial domains.

My technical expertise spans Spring Boot, Microservices, RESTful APIs, Angular, React, and AWS, with deep domain knowledge in EMV/Chip Card Processing, PCI-DSS compliance, OAuth2, and real-time payment orchestration.

I’ve successfully led full payment lifecycle implementations, third-party gateway integrations, and PCI-compliant microservices, improving security and reducing transaction latency. I build both scalable backend systems and interactive frontends using Angular and React.

I'm passionate about clean code, Agile methodologies, DevOps automation, and delivering production-ready software in cloud-native environments.

When I’m not building APIs or performance-tuning services, I collaborate with cross-functional teams, mentor junior developers, and drive CI/CD best practices.

Let’s connect if you're interested in enterprise-scale payments, full-stack development, or cloud-native systems.

## Work Experience
### Sr. Software Engineer / Python Backend Engineer(ML ,AI) @ Optum
Jan 2023 – Present | Minnesota, United States
Leading the design and development of enterprise healthcare applications leveraging Java, .NET Core, and AWS Cloud, with a focus on scalability, microservices, and secure RESTful APIs.

### Senior Software Engineer / Python Backend & Platform Engineer (AI) @ Federal Home Loan Bank of Indianapolis (FHLBI)
Jan 2021 – Jan 2023 | Whittier, California, United States
Delivered scalable banking applications using Java, Spring Boot, Angular, and Azure Cloud. Focused on security, performance, and continuous delivery of mission-critical financial systems.

Key Responsibilities:

Developed Spring Boot microservices and RESTful APIs for high-availability banking systems.

Implemented DDD patterns, secure authentication with OAuth2/JWT, and data validation layers.

Created CI/CD pipelines using Azure DevOps and integrated automated testing (JUnit, Mockito).

Deployed services on Azure App Services with Cosmos DB and Blob Storage integration.

Applied performance tuning and monitoring via Azure Monitor and App Insights.

Mentored developers and conducted peer code reviews for maintainable, scalable design.

Impact:
Enabled faster feature delivery cycles and improved transaction processing performance by 30%.

### Software Developer / Python @ Cogent Communications
Jan 2020 – Jan 2021 | Washington, United States
Developed and deployed secure, high-performance RESTful APIs using C# (.NET Core) and Azure Cloud. Focused on automation, scalability, and API integration.

Key Responsibilities:

Built .NET Core Web APIs with Swagger/OpenAPI documentation.

Implemented SignalR for real-time data communication.

Deployed services using Azure App Services and Blob Storage for scalable performance.

Configured Nginx as reverse proxy for load balancing and caching.

Designed CI/CD pipelines in Azure DevOps for continuous delivery.

Ensured application security via OAuth2/JWT and role-based authorization.

Optimized SQL Server stored procedures and improved query performance by 20%.

### Senior Software Engineer @ HighRadius
Jan 2017 – Jan 2019 | Hyderabad, Telangana, India
Developed enterprise financial applications using ASP.NET Web API, VB.NET, and Azure Cloud. Managed data access, deployments, and system performance.

Key Responsibilities:

Built Web APIs and backend logic using ASP.NET Web API and NHibernate ORM.

Integrated Oracle databases and optimized stored procedures for large-scale transactions.

Deployed solutions on Microsoft IIS and Azure Cloud Services for high availability.

Managed CI/CD automation in Azure DevOps for faster releases.

Enhanced security with Azure Active Directory and RBAC.

Conducted performance profiling and code optimization.

Skills:

ASP.NET Web API / VB.NET

NHibernate ORM

Azure Cloud / IIS

Oracle Database

CI/CD Automation

### J2Ee Developer @ eNoah iSolution Pvt. Ltd.
Jan 2015 – Jan 2017 | Chennai, Tamil Nadu, India
Developed web and enterprise applications using ASP.NET MVC, VB.NET, and Java (JSF). Contributed to full SDLC, from design to deployment on JBoss and AWS environments.

Key Responsibilities:

Built and maintained ASP.NET MVC (4) and JSF applications for enterprise clients.

Designed and optimized data models in Oracle databases.

Implemented AWS services for scalable and secure cloud hosting.

Utilized MSTest for unit testing and Unity for dependency injection.

Participated in Agile sprints and code reviews, ensuring on-time quality delivery.


## Contact & Social
- LinkedIn: https://linkedin.com/in/vamsik26

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Source: https://flows.cv/vamsi
JSON Resume: https://flows.cv/vamsi/resume.json
Last updated: 2026-03-22