Raja Kumar
Senior Software Engineer at Visa
Coimbatore, Tamil Nadu, India
Summary
🤩
Rockstar🎓
Top SchoolRaja Kumar is a Senior Software Engineer with six years' experience building scalable backend systems and developer productivity tools at Visa, specializing in Spring Boot, Java migrations, and performance optimization. He has a track record of delivering measurable impact—cutting a batch job from 3.3 hours to 12 minutes and improving developer productivity through AI-driven tools like AI-Linter, GEN-AI code generation, and the VGAR testing framework. Comfortable across full-stack concerns, he’s implemented REST APIs, in-memory data processing with DuckDB, and experimented with local and cloud LLM integrations in open-source projects such as Devika. Raja mentors new joiners and interns, drives PoCs in workflow engines and form platforms, and brings a pragmatic focus on clean code, accessibility, and maintainability to every project. Based in Coimbatore, he combines hands-on engineering with a curiosity for AI-first developer tooling that streamlines delivery.
6 years of coding experience
3 years of employment as a software developer
Bachelor's degree Information Technology, Bachelor's degree Information Technology at PSG College of Technology
Github Skills (9)
configuration-management10
python10
toml10
apidoc9
api9
machine-learning8
ml8
ai8
aiml8
Programming languages (4)
Github contributions (5)
stitionai/devika
Mar 2024 - Apr 2024
Devika is the first open-source implementation of an Agentic Software Engineer. Initially started as an open-source alternative to Devin.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:18 reviews, 7 PRs, 34 comments in 13 days
Contributions summary:Raja implemented and then reverted support for LlamaCpp, indicating experimentation with local LLM inference. They fixed a Groq client class, integrating with a different LLM provider. Additionally, the user added and tested support for other Groq models, modifying the LLM and configuration files. Furthermore, they fixed token usage tracking in the UI and logs.
agentic
rajakumar05032000/devika
Mar 2024 - Apr 2024
Devika is an Agentic AI Software Engineer that can understand high-level human instructions, break them down into steps, research relevant information, and write code to achieve the given objective. Devika aims to be a competitive open-source alternative to Devin by Cognition AI.
Contributions:26 pushes, 12 branches in 13 days
agentic-aiai
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