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Saikumar Maddela - Sr. .NET Full Stack Developer

[email protected]

Location: Remote, Remote, USA

Relocation: Yes

Visa: GC

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Name: SAIKUMAR MADDELA Role: Sr. .Net Full Stack Developer Email id: [email protected] Contact: +1 (909) 515-3436 LinkedIn: www.linkedin.com/in/saikumar-maddela-84186b267 PROFESSIONAL SUMMARY Accomplished Sr. .NET Full Stack Developer with over 10+ years of experience in designing, developing, and deploying enterprise-grade applications across healthcare, finance, retail, and telecom domains. Adept at building scalable back-end solutions using .NET Core/.NET 8, C#, and microservices while delivering responsive and dynamic front-end applications with React.js, TypeScript, and Angular. Proficient in AWS & Azure cloud-native solutions, CI/CD automation, containerization (Docker/Kubernetes), and DevOps practices to enhance performance, scalability, and security. Skilled in SQL/NoSQL databases, API integrations, identity management, and event-driven architectures, with proven expertise in HIPAA, SOX, and financial compliance environments. Strong background in Agile/Scrum methodologies, stakeholder collaboration, and modernizing legacy systems into cloud-first, AI/ML-enabled architectures. Designed and deployed enterprise-grade .NET Core/.NET 8 APIs for healthcare and financial systems, ensuring compliance with HIPAA, security standards, and industry best practices. Developed responsive front-end applications using React.js, TypeScript, Redux Toolkit, React Query, and Angular, improving customer engagement and provider/patient experiences. Built microservices and event-driven architectures leveraging AWS SNS/SQS, Kafka, and Azure Service Bus, ensuring reliability and high scalability across enterprise systems. Experience working in enterprise environments with both .NET and Java-integrated systems. Optimized SQL Server and PostgreSQL databases, improving high-volume transaction processing and data analytics performance through indexing and stored procedures. Developed interactive web components using Blazor Server/Web Assembly for internal enterprise tools, improving performance and enabling seamless integration with existing .NET Core APIs. Worked on data-driven financial applications supporting portfolio management and investment analytics, handling large-scale datasets. Developed Azure Functions using HTTP triggers and event-driven patterns for scalable applications. Built AI-powered workflows using LLM integrations, prompt orchestration, and automation pipelines. Worked on GenAI-based solutions for analytics, automation, and intelligent decision systems. Worked with Azure messaging services (Service Bus / queues) for asynchronous communication. Migrated legacy ASP.NET MVC and .NET Framework apps to .NET 7/8 with React, modernizing performance, maintainability, and scalability. Leveraged AWS cloud-native services (Lambda, ECS, API Gateway, S3, CloudFormation, and CodePipeline) for cost optimization, high availability, and automated deployments. Automated CI/CD pipelines using GitHub Actions, Azure DevOps, AWS CodeBuild, and Terraform, reducing release cycle times and deployment errors. Built AWS cloud-native applications using ECS, RDS, and CI/CD pipelines. Developed and maintained WCF services for enterprise integrations and legacy systems. Designed and deployed cloud-native applications across AWS and Azure using microservices and serverless architectures. Developed Angular 14+ applications with modular architecture and performance optimization. Developed backend services using Node.js and built UI components using Vue.js. Implemented containerization and orchestration with Docker, Kubernetes (EKS), and ECS, streamlining deployments and improving environment consistency. Enhanced observability and monitoring with AWS CloudWatch, ELK Stack, X-Ray, and Application Insights, enabling predictive monitoring and reduced downtime. Developed RESTful and GraphQL APIs for third-party integrations with healthcare vendors, payment gateways, and analytics providers. Collaborated with cross-functional teams including UI/UX designers, product owners, and data engineers to translate requirements into secure, scalable applications. Improved front-end performance using custom hooks, caching strategies, React Query, and Tailwind CSS, ensuring fast and seamless workflows. Led Agile ceremonies such as sprint planning, backlog refinement, and reviews, aligning development deliverables with evolving business priorities. Built automated test frameworks (xUnit, NUnit, Jest, Cypress, React Testing Library) ensuring high-quality applications across front-end and back-end. Integrated AI/ML and MLOps practices for predictive healthcare cost modeling, patient outcomes analysis, and automated claim documentation workflows. Ensured compliance and governance in healthcare and financial domains, implementing secure APIs, audit trails, and industry-standard encryption. Mentored junior developers and conducted code reviews, fostering knowledge sharing and maintaining clean, scalable, and maintainable architectures. TECHNICAL SKILLS Languages C#, .NET 8/.NET Core, TypeScript, Node.js, JavaScript (ES6+), Python, SQL, HTML5, CSS3 Frontend React.js, Angular, Vue.js, Redux Toolkit, React Query, React Testing Library, Jest, Cypress, Tailwind CSS Backend & APIs ASP.NET Core Web API, RESTful APIs, GraphQL, gRPC, Microservices, Entity Framework Core, Dapper, Node.js Cloud & DevOps AWS: Lambda, ECS, EKS, S3, SNS/SQS, API Gateway, CloudFormation, CodeBuild/CodePipeline, Cognito, DynamoDB, CloudWatch, X-Ray Azure: Azure Service Bus, Application Insights, DevOps CI/CD: GitHub Actions, Azure DevOps Pipelines, Jenkins IaC: Terraform, AWS CloudFormation Containerization: Docker, Kubernetes Databases SQL: Microsoft SQL Server, PostgreSQL (Indexing, Stored Procedures) NoSQL: DynamoDB, MongoDB Architecture & Design Microservices, Event-Driven Architecture, Serverless, Domain-Driven Design (DDD), SOLID Principles, Legacy Modernization, AI/ML Integration Messaging & Integration Kafka, AWS SNS/SQS, Azure Service Bus, RabbitMQ Security & Identity OAuth2, OpenID Connect (OIDC), Identity Server, AWS Cognito, HIPAA Compliance, SOX Compliance, Industry-Standard Encryption, Audit Trails Testing xUnit, NUnit, Jest, Cypress, React Testing Library, Moq, Automated Test Frameworks Methods & Tools Agile, Scrum, Git, Jira, Confluence, MLOps, ETL Processes EDUCATION Bachelor s in computer science at SRM University Aug 2011 to May 2015 CERTIFICATIONS Microsoft Certified: Azure Developer Associate AWS Certified Developer Associate WORK EXPERIENCE Client: Elevance Health, Atlanta, GA Nov 2024 - Present Role: Sr. .NET Full Stack Developer Responsibilities: Designed, developed, and deployed .NET Core and .NET 8 APIs to support large-scale healthcare plan applications, ensuring scalability, security, and compliance with HIPAA and industry standards. Implemented dynamic front-end interfaces using React.js with TypeScript, enabling modular, reusable components and improving member and provider user experience. Leveraged AWS cloud-native services (Lambda, S3, ECS, API Gateway, and CloudFormation) for hosting and scaling applications with improved fault tolerance and cost efficiency. Designed and implemented NIEM-aligned XML schemas (XSD) for healthcare data exchange, ensuring standardized interoperability across partner systems. Automated software delivery pipelines with GitHub Actions, AWS CodePipeline, and CodeBuild, achieving faster release cycles and reducing manual errors. Built RESTful and GraphQL APIs for secure integration with third-party providers, insurance vendors, and healthcare analytics systems. Optimized relational data storage with SQL Server and PostgreSQL, ensuring reliable transaction processing and efficient claims data retrieval. Worked on JavaScript-based integrations and explored Node.js services for API orchestration and backend support in distributed systems. Implemented infrastructure automation using Terraform for AWS cloud deployments. Collaborated with teams integrating Java/Spring Boot-based microservices within enterprise systems. Worked with GitLab CI/CD pipelines (or similar tools) for automated build and release management. Developed responsive front-end applications using React.js and adaptable to modern frameworks like Vue.js Adopted NoSQL solutions such as DynamoDB and MongoDB to support real-time data flows and fast access to patient eligibility and enrollment records. Integrated modern identity management using OAuth 2.0, OpenID Connect, and AWS Cognito to strengthen application security for patients and healthcare staff. Modernized legacy applications by migrating from ASP.NET MVC to .NET 8 with React, resulting in improved performance and maintainability across applications. Designed resilient microservices and event-driven architectures with AWS SNS/SQS and Kafka, ensuring high scalability and system reliability. Managed incidents using ServiceNow and ITIL processes, ensuring SLA compliance. Implemented Kafka producers and consumers with outbox pattern, ensuring reliable event-driven communication and data consistency. Enhanced observability with AWS CloudWatch, ELK Stack, and Application Insights, enabling predictive monitoring and minimizing production downtime. Applied Domain-Driven Design (DDD) and Clean Architecture to enforce consistent design principles and reduce long-term system complexity. Utilized PostgreSQL with ORM frameworks (Prisma/Drizzle-like) for efficient data modeling, migrations, and query optimization. Deployed containerized workloads using Docker and Kubernetes (EKS), streamlining deployments and improving healthcare plan service scalability. Enhanced front-end performance using React Query, Redux Toolkit, and custom hooks, improving responsiveness in complex healthcare workflows. Designed API-first REST/GraphQL services with idempotent patterns, request validation, and transactional integrity. Conducted agile ceremonies, backlog refinement, and sprint reviews under Agile/Scrum methodology, aligning development efforts with evolving business priorities. Improved system reliability through automated testing frameworks such as xUnit, NUnit, Jest, and React Testing Library, ensuring consistent quality across the stack. Collaborated with data engineering teams to implement ETL pipelines and real-time processing via AWS Glue and Kinesis, ensuring accurate reporting for healthcare plans. Introduced AI/ML-driven analytics and integrated MLOps practices for predictive healthcare cost modeling, ensuring accurate insights into claims and patient outcomes. Explored GenAI solutions for automating healthcare member inquiries and claim documentation, enhancing patient support and operational efficiency. Designed Python-based utilities for data validation, automation scripts, and healthcare analytics, supporting cross-team initiatives with flexible tooling. Delivered robust infrastructure setups using Terraform and AWS CDK, enabling repeatable deployments and consistent environment configurations. Client: Wintrust Financial Corp, Rosemont, IL Jan 2022 - Oct 2024 Role: .NET Full Stack Developer Responsibilities: Designed, developed, and deployed scalable .NET Core APIs to support financial transaction processing systems ensuring high performance and reliability. Built React-based user interfaces with reusable components, hooks, and state management libraries to enhance customer engagement and financial dashboards. Integrated AWS services (Lambda, S3, API Gateway, DynamoDB, and CloudFormation) into enterprise applications for cost optimization and cloud-native scalability. Implemented microservices architecture for financial services applications, ensuring modularity, fault tolerance, and easier maintainability. Collaborated with UI/UX designers, business analysts, and product owners to translate financial service requirements into technical solutions. Developed secure RESTful APIs and GraphQL endpoints for data-driven applications handling sensitive financial information. Developed Node.js services and Vue.js components for full stack application support. Designed and implemented API-driven integrations supporting AI/ML use cases, including data orchestration and scalable service layers for intelligent application features. Conducted end-to-end application testing (unit, integration, UAT) to ensure system reliability across multiple environments. Migrated legacy .NET applications to .NET 7 and cloud-based infrastructure, enhancing application performance and maintainability. Contributed to IEPD-style documentation and structured data exchange frameworks for secure financial data sharing. Supported payment processing workflows including authorization, settlement, and reconciliation for financial transactions. Utilized VBScript and automation tools for testing workflows and troubleshooting application issues. Optimized SQL Server and PostgreSQL queries, stored procedures, and indexing strategies to handle high-volume financial datasets. Designed and implemented CI/CD pipelines with GitHub Actions and AWS CodePipeline, reducing deployment errors and ensuring faster releases. Developed responsive web applications with React, TypeScript, Redux, and Tailwind CSS to support cross-platform user experiences. Collaborated in an Agile Scrum environment, actively participating in sprint planning, backlog grooming, and sprint retrospectives. Provided L2/L3 production support, troubleshooting issues, resolving incidents, and ensuring system uptime. Leveraged GitHub Copilot to accelerate development, improve code quality, and enhance productivity. Utilized AWS CloudWatch, X-Ray, and monitoring tools to ensure uptime and observability of mission-critical financial applications. Worked in Linux/Unix environments, analyzing logs and troubleshooting production issues. Maintained strict security compliance (OAuth2, JWT, SSL/TLS) for financial services applications to meet regulatory and governance standards. Implemented event-driven architecture using AWS SNS/SQS to streamline data processing workflows and enhance system reliability. Used Splunk/Datadog-like monitoring tools for application performance and alerting. Built automated testing frameworks using NUnit, Jest, and Cypress to validate application behavior across front-end and back-end layers. Collaborated with cross-functional teams to integrate third-party APIs and payment gateways ensuring seamless customer transactions. Actively participated in code reviews, knowledge-sharing sessions, and mentorship, promoting best practices within the development team. Documented technical designs, workflows, and system architecture for compliance, audit requirements, and knowledge transfer. Resolved production issues with root cause analysis and quick fixes, ensuring minimal downtime for business-critical applications. Client: Lowe's, Mooresville, NC Nov 2018 - Dec 2021 Role: Sr. .NET Developer Responsibilities: Designed and developed scalable .NET applications to support state-wide environmental programs, ensuring high performance and maintainability. Collaborated with cross-functional teams to implement ReactJS front-end interfaces, providing a responsive and user-friendly experience for internal and public users. Leveraged AWS services including EC2, S3, Lambda, and RDS to deploy and manage cloud-based solutions for seamless data storage and processing. Developed and maintained RESTful APIs and microservices architecture, enabling secure and efficient communication between different application modules. Participated in the full Software Development Life Cycle (SDLC) including requirements gathering, design, development, testing, and deployment of web applications. Implemented Entity Framework and SQL Server database solutions with optimized queries, ensuring data integrity and high-performance operations. Applied Agile and Scrum methodologies, contributing to sprint planning, daily stand-ups, and delivering incremental updates to meet evolving project needs. Conducted code reviews and provided mentoring to junior developers, promoting best coding practices and standardization across the team. Developed React-based user interfaces for interactive data visualization and intelligent workflows, enhancing user experience for business users. Integrated third-party APIs and services into the application ecosystem to enhance functionality and streamline workflows. Built serverless applications using AWS Lambda and integrated API Gateway for real-time environmental data reporting. Developed unit and integration tests using xUnit and NUnit, ensuring application reliability and minimizing production defects. Managed source control with Git and collaborated on CI/CD pipelines using Azure DevOps for automated build, test, and deployment processes. Utilized React Hooks, Redux, and JavaScript ES6+ for state management and dynamic UI rendering, improving user interaction and performance. Implemented security best practices including OAuth2, JWT authentication, and role-based access control to protect sensitive environmental data. Optimized application performance using caching strategies and asynchronous programming in .NET and JavaScript. Created detailed technical documentation and user manuals to support maintenance, training, and future enhancements of the system. Coordinated with stakeholders to gather requirements and translate them into technical solutions that align with Missouri Department of Natural Resources mission and standards. Researched and recommended emerging technologies such as .NET Core, React, and AWS Cloud solutions, ensuring modern, efficient, and maintainable application development. Client: Cyient, India Dec 2016 - July 2018 Role: .NET Developer Responsibilities: Designed, developed, and deployed scalable applications using .NET Framework / .NET Core, ensuring high performance, reliability, and alignment with business requirements. Developed responsive front-end interfaces using Angular integrated with .NET backend services, enhancing user experience for enterprise applications. Implemented cloud-based solutions using Microsoft Azure services including App Services, Azure Storage, and Azure SQL Database for hosting, monitoring, and performance optimization. Built and consumed RESTful Web APIs and integrated third-party APIs, enabling seamless communication between distributed systems. Developed UI components following WCAG 2.1 accessibility standards. Applied Object-Oriented Programming (OOP) principles, design patterns, and clean coding practices to develop maintainable and extensible applications. Managed database operations using SQL Server, writing stored procedures, triggers, and complex queries to ensure data integrity and optimized performance. Worked in Agile/Scrum environments, participating in daily stand-ups, sprint planning, and retrospectives, ensuring timely and efficient delivery. Migrated legacy applications to modern Azure cloud-based architectures, improving scalability, availability, and cost efficiency. Developed reports using RDLC and Crystal Reports for business reporting needs. Integrated Entity Framework and LINQ for efficient data access, optimizing query performance and reducing execution time. Designed and implemented secure authentication and authorization using OAuth2, Identity Server, and Active Directory, ensuring application security. Performed unit testing and integration testing using NUnit and MS Test, ensuring high-quality and reliable software deliverables. Automated build and deployment processes using CI/CD pipelines with Azure DevOps, improving release efficiency and consistency across environments. Implemented logging, monitoring, and post-production support using Azure Application Insights, while developing dynamic UI components with Angular (TypeScript) and collaborating with stakeholders to translate requirements into technical solutions. Client: Tata Communications, India Aug 2015 Nov 2016 Role: .NET Developer Responsibilities: Designed, developed, and implemented scalable web applications using ASP.NET and C#, ensuring high performance and reliability for enterprise systems. Maintained and enhanced ASP.NET Web Forms and MVC 5 applications on .NET Framework 4.8.Collaborated with cross-functional teams to integrate applications with SQL Server, ensuring efficient data retrieval, secure transactions, and optimized query performance. Developed WCF (Windows Communication Foundation) services and APIs to enable seamless communication between internal systems and third-party applications. Enhanced web applications using MVC architecture, implementing responsive design and ensuring cross-browser compatibility for improved user experience. Utilized LINQ, Entity Framework, and ADO.NET for efficient data manipulation, improving performance and reducing manual coding effort. Participated in all phases of the Software Development Life Cycle (SDLC) including requirements gathering, analysis, design, development, testing, and deployment. Designed and optimized database components using SQL Server, including stored procedures, functions, triggers, and performance-tuned queries for handling large datasets. Developed dynamic user interfaces using JavaScript, jQuery, and AJAX, enhancing usability and reducing application response time. Worked with Oracle databases (SQL/PLSQL) for schema design and query optimization. Implemented Service-Oriented Architecture (SOA) principles to build reusable and scalable services, minimizing redundancy across applications. Conducted unit testing using NUnit and MSTest, ensuring application quality and reducing production defects. Collaborated with QA teams for bug resolution, provided UAT support, and improved system reliability while following Agile/Scrum methodologies. Managed version control and deployments using TFS and Git, and delivered comprehensive technical documentation, user manuals, and knowledge transfer sessions to ensure smooth transitions and operational continuity. Keywords: csharp continuous integration continuous deployment quality analyst artificial intelligence machine learning user interface user experience javascript sthree microsoft mississippi Georgia Idaho Illinois North Carolina