Balaji Kumar

About Balaji Kumar

Senior.NET Developer | 8+ Years Building Systems That ScaleI’m a backend-focused.NET developer with 8+ years of experience building high-scale systems used by millions of users. One of the platforms I currently work on processes 250M+ transactions every year, where performance, reliability, and scalability are critical.My work focuses on.NET Core, microservices, and cloud infrastructure, with a strong emphasis on improving performance, removing bottlenecks, and maintaining 99.9% production uptime.What I do • Design and build cloud-native microservices using.NET and modern architecture patterns • Optimize high-throughput systems through SQL tuning, caching strategies, and async pipelines • Scale infrastructure using Kubernetes, Docker, KEDA, and event-driven architecture • Work across the backend stack with C#, GraphQL, gRPC, REST APIs, and Entity Framework • Collaborate with frontend teams using Angular and modern web technologiesI’ve worked with distributed engineering teams across India, Singapore, Taiwan, and the Philippines, and received the Star Employee Award (2024) at Edenred for contributions to platform reliability and performance.If you\'re building high-scale platforms or distributed systems and need someone who can design backend architecture, optimize performance, and deliver maintainable code — let’s connect.

Experience

1. Backend Engineer

   Edenred

   Mar 2023 — Present · Mumbai, IN

   Experienced in leading initiatives for Ticket Express, the premier electronic ticket service inIndia and Taiwan, focused on leveraging Azure services to construct Ticket Express Cloud(TXC) for global business expansion.• Contributed significantly to TXC\'s design, emphasizing cloud-native architecture andimplementing microservices using K8S, gRPC, and GraphQL technologies.• Currently leading the Transaction service, a pivotal microservice engineered to manage100+ million voucher additions and 250+ million transactions annually for each businessunit.• Practiced SCRUM methodology for agile development, collaborating seamlessly acrossAPAC countries.• Received appreciation from leadership for outstanding contributions and was honored witha Star Employee Award in 2024, specifically in Singapore.• Developed comprehensive low-level designs, including Flow Diagrams, Sequence Diagrams,and Entity Relationship Diagrams (ERDs).• Proficient in Azure services like Azure Functions, Service Bus, Kubernetes Event-drivenAutoscaling (KEDA), AKS, Application Insights, and Azure DevOps.• Drove service performance enhancements through meticulous performance analysis andoptimization endeavors.• Implemented GraphQL to streamline bandwidth usage and reduce waterfall requests.• Actively engaged in system design dialogues, providing insights and recommendations.• Implemented custom logic with Dependency Injection from.NET Core, enhancing objectcreation processes without relying on the factory pattern.• Leveraged gRPC protocol for efficient communication between services.• Participated in Agile team discussions and conducted code reviews. Engaged in cross-teammeetings held in Taiwan, Singapore, Philippines, and India to ensure alignment andcollaboration across different regions.

Education

• Vidyalankar Institute of Technology, Mumbai

  Bachelor's degree