Building systems that empower developers.
Hi, I'm Arun Kumar, a Software Developer (DevX) obsessed with API clarity, AI Native Workflows, and beautiful interfaces. B.Tech Electrical Engineering at NSUT - Delhi.
TypeScript
Flutter Expert
Cloud & Serverless
AI / MCP
Experience
Software Developer (DevX) Intern
Digia Studio- SDK Architecture & API Clarity: Implemented a robust Kotlin SDK orchestrating UI rendering and schema parsing. Obsessed over API parameter naming and error message clarity, directly optimizing the time to successful implementation for users.
- Extensibility & Seamless Interfaces: Engineered a bridge connecting Flutter with a JavaScript execution environment. Designed seamless interfaces that empower developers to dynamically inject business logic without app recompilation, aggressively driving down developer frustration.
- Developer Tooling & Environments: Architected the Device Design Panel to provide automated Safe Area toggling and 100% UI fidelity testing, actively minimizing deployment friction and accelerating the platform's "time to aha moment".
- Logical Flow & Scalable APIs: Overhauled core
TextFieldAPIs and built naturally null-safe components likePaginatedSliverLists. Replaced convoluted user flows with predictable, clean implementation patterns for API consumers. - UX/DX Predictability: Analyzed and resolved critical developer pain points surrounding deep-linking within Navigation Bars and refactored Modal dismissal contexts to ensure reliable state mounting across the platform.
Open Source & Developer Tooling
Active Contributor
Twenty (YC23, 40K GitHub Stars)- [Reliability & DX]: Resolved data staleness in virtualized tables by enforcing refresh on metadata updates, directly preventing developer frustration and improving state predictability (Fixes #16388).
- [Optimization]: Corrected cache behavior for one-to-many field updates, establishing a cleaner internal caching schema for the global community (Fixes #16340).
- [Data Migration]: Authored a robust zero-downtime data migration script, maintaining exact backwards compatibility for API consumers.
Contributor
CCExtractor- Investigated and resolved critical Heap OOB buffer over-read bugs (Fixes #2179) within MP4 atom parsing, actively minimizing memory constraints for software developers utilizing the data pipeline.
Active Participant - GSoC 2026
API DashSole Author & Maintainer
chartjs_flutter (Published Package)- DX-Obsessed Software Library: Built a core abstraction layer binding Chart.js natively onto Flutter, actively maintaining high performance and clear documentation for developers.
- Drives down "time to aha moment" for data visual implementations by heavily emphasizing predictable integration flows.
Full Stack & AI Projects
FaceSwapper AI
Generative AI Pipeline & Editor- RESTful Web Services: Developed a high-performance video processing platform using Next.js 15 and TypeScript, leveraging Server Actions for seamless client-server communication.
- Scalable Backend Systems: Architected a relational schema using PostgreSQL and Prisma ORM; engineered a Redis-backed rate limiting system using Sliding Window Algorithm.
- Innovative Problem-Solving: Designed pipelines orchestrating external AI models for face-swapping, implementing a custom polling service and state machine for async jobs.
- Data Storage: Built a storage abstraction layer supporting Cloudflare R2/S3, utilizing signed URLs for secure media uploads.
- Deployed Groq API (Llama-3-70B) to analyze user data and provide curated, text-based guidance, mirroring workflows for analyzing contracts and advisory systems.
- Engineered a dashboard using Supabase Realtime to visualize trends and track user goals.
- Integrated Firebase AI (Gemini 1.5 Flash) to generate context-aware quizzes and logic flows, directly applicable to personalized user assessments.
- Built with Clean Architecture and BLoC, ensuring the app handles complex state transitions smoothly.