Senior Full-Stack .NET Developer - Cloud-Native Expert

Name: Jeevan Kumar

Senior Full Stack .Net Developer

Email: ************@*****.*** LinkedIn Mobile: +1-512-***-****

SUMMARY

Software Engineer with 10+ years of experience building scalable, cloud-native applications using .NET 9/10, AWS, and Microservices architecture.

Experienced in developing enterprise applications using C#, ASP.NET Core, Angular, REST APIs, Oracle Database, PL/SQL, Stored Procedures, and Agile/Scrum methodologies.

Strong expertise in software design, coding, testing, debugging, and production support

Strong expertise in Infrastructure as Code (Terraform), CI/CD pipelines, PostgreSQL optimization, and distributed systems.

Proven ability to design secure, high-performance systems with deep experience in event-driven architectures and modern DevOps practices.

Hands-on experience leveraging AI tools (GitHub Copilot, LLMs) to accelerate development, improve code quality, and automate engineering workflows.

Delivered enterprise-grade distributed systems supporting high-volume users with strong availability, scalability, and performance guarantees

TECHNICAL SKILLS

Languages: C#, JavaScript, PowerShell

Backend: .NET 9/10, ASP.NET Core (Web API, MVC, Razor Pages), EF Core

Frontend: React.js, TypeScript, HTML5, CSS3

Architecture: Microservices, Event-Driven Architecture, RESTful APIs, Distributed Systems, SOLID Principles

Cloud: AWS (Lambda, API Gateway, S3, RDS, DynamoDB, ECS, EKS, CloudWatch)

DevOps & IaC: Terraform, GitHub Actions, AWS Code Pipeline, Code Build, Jenkins, Docker, Kubernetes

Databases: PostgreSQL, SQL Server, MySQL, MongoDB, Redis

Messaging: Kafka, RabbitMQ, SignalR

Tools: Swagger, Postman, Git

Observability: CloudWatch, ELK Stack, Distributed Tracing

AI/Developer Tools: GitHub Copilot, LLM-assisted development

API Design: REST, OpenAPI/Swagger

CERTIFICATIONS

Microsoft Certified: Azure Developer Associate

AWS Certified Solutions Architect – Associate

EDUCATION

Master of Science in Computer and Information Systems, USA

Bachelor of Technology in Computer Science, India

PROFESSIONAL EXPERIENCE

Senior Full Stack .NET Developer

Deloitte (State of Michigan – Unemployment Insurance) Detroit, MI, USA

Mar 2025 – Present

Technologies: .NET 9/10, ASP.NET Core (Web API, MVC, Razor Pages), C#, EF Core, SignalR, React.js, TypeScript, PostgreSQL, Kafka, AWS (Lambda, API Gateway, S3, ECS/EKS, CloudWatch), Terraform, GitHub Actions, Code Pipeline, Code Build

Project Description: State-wide unemployment insurance platform supporting claims processing, employer services, and citizen portals using .NET, React, AWS, and event-driven architecture.

Architected and delivered scalable microservices using .NET 9/10, improving system scalability by 40%

Engineered high-performance REST APIs, reducing response latency by 35%

Designed AWS multi-service architecture (Lambda, API Gateway, ECS/EKS) achieving 99.9% availability

Built reusable Terraform modules with S3 state management and DynamoDB locking, reducing infra setup time by 60%

Developed responsive user interfaces using Angular and TypeScript following component-based architecture

Designed end-to-end CI/CD pipelines using GitHub Actions and AWS Code Pipeline, enabling zero-downtime deployments

Implemented secure AWS architecture using IAM roles, security groups, and least-privilege access policies, strengthening system security posture

Integrated Angular front-end components with ASP.NET Core Web APIs to deliver seamless user experiences.

Implemented Kafka-based event-driven architecture, improving throughput by 45%

Built real-time systems using SignalR, reducing notification delays by 70%

Optimized APIs using async programming and Redis caching, improving performance by 30%

Tuned PostgreSQL using execution plans, indexing (B-tree, composite), and partitioning, improving query performance by 50%. Leveraged EF Core 8+ with optimized LINQ queries for efficient data access

Secured systems using OAuth2, JWT, RBAC, ensuring compliance standards

Implemented CloudWatch logging, alerting, and distributed tracing, reducing MTTR by 40%

Developed modern UI with React.js + TypeScript, improving UX metrics by 25%

Designed and optimized Oracle database objects including stored procedures, functions, and triggers for business-critical operations.

Built reusable front-end components and improved state management using React best practices

Used GitHub workflows and branching strategies, improving release stability

Designed scalable distributed system architecture including service boundaries, data flow, and fault-tolerant patterns for high-volume applications

Collaborated with business analysts and UX teams to implement application enhancements using Agile methodology.

Leveraged GitHub Copilot & LLMs (2024–Present) for code generation, test automation, and documentation

Owned end-to-end delivery of key modules from design through deployment and production support

Led code reviews and enforced SOLID and clean architecture principles

Collaborated with DevOps teams on deployment automation and observability

Mentored junior developers and contributed to design discussions

Senior Full Stack .NET Developer

UPMC Pittsburgh, PA, USA

Jan 2023 – Feb 2025

Technologies: .NET Core, ASP.NET Core, C#, EF Core, React.js, PostgreSQL, Kafka, AWS (RDS, S3, Lambda, API Gateway), Docker, Kubernetes, Terraform, GitHub Actions, Jenkins

Project Description: Healthcare platform for secure patient data management using microservices, AWS cloud, and Kubernetes.

Designed HIPAA-compliant systems, improving reliability by 35%

Architected microservices using .NET Core, enhancing modularity and scalability

Built high-performance APIs reducing latency by 30%

Developed reusable Angular components and services to improve application maintainability and performance.

Designed AWS architecture using RDS, Lambda, API Gateway, improving cost efficiency

Implemented secure AWS configurations including IAM roles and access controls to ensure compliance with healthcare data regulations

Created and enhanced Oracle PL/SQL stored procedures, packages, and triggers to support healthcare workflows.

Optimized PostgreSQL using indexing, partitioning, and query tuning, improving performance by 40%

Containerized applications with Docker and Kubernetes, reducing downtime by 25%

Built CI/CD pipelines using GitHub Actions, Jenkins, improving release cycles by 45%

Developed Kafka-based event-driven systems for async processing

Participated in code reviews and ensured compliance with enterprise development standards.

Implemented SignalR real-time communication for notifications

Automated infrastructure using Terraform, improving deployment consistency

Implemented CloudWatch + ELK monitoring, reducing downtime by 30%

Achieved 90%+ test coverage using xUnit, Jest

Improved performance via API and database optimization. Integrated third-party healthcare APIs

Leveraged GitHub Copilot (2023) to accelerate development workflows

Collaborated across DevOps, QA, and business teams

Led design discussions and contributed to architectural decisions for scalable healthcare systems

Software Developer

One.com

Sep 2018 – Jul 2021

Technologies: .NET 6, ASP.NET MVC, Web API, C#, React.js, SQL Server, Cosmos DB, Azure (App Services, Redis Cache, Event Grid, AKS), Docker, Kubernetes, Jenkins

Project Description: E-commerce platform modernization focusing on scalability, performance, and real-time customer engagement.

Migrated legacy systems to .NET 6, improving performance by 20%

Developed scalable applications improving transaction throughput by 30%

Improved application scalability by implementing horizontal scaling strategies and load balancing

Designed data access layers using Entity Framework, improving maintainability and performance

Designed REST APIs reducing failures by 20%

Built dynamic web interfaces using Angular and TypeScript.

Built microservices improving maintainability and scalability

Implemented SignalR real-time features

Developed Oracle SQL queries, stored procedures, and database objects to support e-commerce transactions.

Optimized SQL Server queries improving performance by 40%

Implemented Redis caching, reducing latency by 30%

Worked closely with QA teams during testing, debugging, and production support activities.

Built CI/CD pipelines using Jenkins, improving automation

Containerized apps using Docker & Kubernetes

Integrated third-party APIs and payment gateways

Improved uptime through monitoring and tuning. Managed source control using Git

Contributed to architectural decisions for scalable e-commerce systems

Junior Software Developer

NetJets

Jun 2014 – Aug 2018

Technologies: .NET Core, ASP.NET Core, C#, PostgreSQL, SQL Server, React.js, AWS (Lambda, API Gateway, RDS, DynamoDB, S3, CloudWatch, EKS), Terraform, Docker

Project Description: Developed a serverless e-commerce platform using AWS and microservices architecture.

Developed serverless applications using .NET Core and AWS Lambda, improving scalability by 25%

Built REST APIs using ASP.NET Core improving performance by 30%

Designed AWS architecture with multi-region failover, improving availability

Implemented Terraform IaC, reducing setup time by 50%

Built CI/CD pipelines using Code Pipeline and Jenkins, improving deployment speed by 50%

Implemented Git-based workflows and CI/CD practices improving code integration and deployment reliability

Developed Kafka + SNS/SQS event-driven systems

Designed high-availability PostgreSQL with replication and failover

Optimized queries improving DB performance by 30%

Implemented Redis caching reducing latency

Built monitoring using CloudWatch and X-Ray, reducing MTTR

Containerized apps using Docker and deployed on EKS

Improved system reliability and scalability through performance optimizations

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