Sunny Kasera

IBM RAG & Agentic AI Certified.

Full Stack Developer with 13+ years of experience building scalable web applications, backend systems, REST APIs, and microservice-based solutions, with a strong focus on Java, Spring Boot, and modern backend architecture.

Experienced in developing production-oriented applications using Java, Spring Boot, Spring Security, Spring Batch, REST APIs, API Gateway, Docker, MySQL, MongoDB, and asynchronous processing. I focus on building secure, scalable, maintainable backend systems and microservices.

Currently building a microservice-based File Management & Processing Platform using Java, Spring Boot, Spring Security, Spring Batch, React.js, MySQL, MongoDB, API Gateway, and Docker. The platform includes secure JWT authentication, large-file uploads, file processing, Excel/data import workflows, and scalable service-to-service communication.

Alongside Java backend development, I have strong experience with Python and Generative AI. I work with RAG, Agentic AI, LLM applications, LangChain, LangGraph, LlamaIndex, CrewAI, and MCP, with a focus on integrating AI capabilities into practical applications and business workflows.

My broader technical experience includes Python, PHP, React.js, MySQL, MongoDB, AWS, and Azure.

I enjoy solving complex engineering problems involving backend architecture, microservices, security, large-data processing, asynchronous workloads, debugging, system integration, and AI while keeping solutions maintainable, reliable, and business-focused.

Software Engineer and Web Developer with 14+ years of experience building web applications, backend systems, APIs, and business solutions for clients across multiple industries. Started my career at Parkhya Solutions and Cyber Infrastructure, where I developed strong foundations in PHP, MySQL, Drupal, and enterprise web development. From 2015 to 2020, I worked as a freelance software developer, delivering end-to-end solutions using WordPress, Shopify, HubSpot, and custom PHP applications for international clients, including an on-site project engagement in Cambodia.

From 2020 to 2025, I served as a remote Web Developer at JV Media Agency, developing scalable backend systems, maintaining production applications, optimizing performance, and collaborating with distributed teams and global clients. In recent years, I have expanded into Artificial Intelligence and Machine Learning, working on predictive modeling, data analysis, and real-world AI applications using Python, Pandas, Scikit-learn, and TensorFlow, while actively exploring model deployment and intelligent automation solutions.

I have completed Bachelor of Computer Application from IGNOU in 2014 with GPA 6.4/10.