Software Developer
Arnav Panigrahi
Backend systems, full-stack applications, and AI/ML pipelines shipped to production.
Background
About
I build backend services, full-stack applications, and AI/ML pipelines with a focus on shipping reliable software to production. My work spans FastAPI microservices on Google Cloud, LangChain-based AI agents for enterprise workflows, and multi-modal ML systems combining computer vision, NLP, and voice synthesis.
At AllCheer, I've delivered measurable impact: a 60% reduction in document processing time, $20K in annual cost savings, and 92% accuracy on an NER pipeline for clinical data extraction. Previously at Pinnacle Consulting, I built full-stack ERP systems and integrated geospatial services for a $75M utility provider.
I hold an M.S. in Computer Science from UC Riverside, where I focused on distributed systems and machine learning. I'm currently seeking software engineering roles in backend systems and applied AI.
Experience
Where I've worked.
Software Developer
AllCheer- Built a LangChain AI agent for ROI workflows, automating authorization checks, compliance validation, and document generation while cutting processing time by 60% and saving $20K/year.
- Engineered a containerized FastAPI service that emulates authenticated RethinkBH sessions for real-time clinical record sync, bypassing 24-48-hour public API latency.
- Developed a React + FastAPI NER pipeline using OpenAI for structured data extraction from therapist notes at 92% accuracy.
Software Developer Intern
AllCheer- Designed a Python logistics engine on Google Cloud with Google Maps APIs for multi-stop route optimization and large-scale staff scheduling.
- Led backend R&D and API schema design for ROI automation, moving Make.com prototypes into production service architecture.
Junior Software Developer
Pinnacle Consulting LLC- Integrated ArcGIS Online with Angular and .NET for a $75M utility provider, enabling real-time infrastructure visualization and reducing oversight errors by 30%.
- Delivered three full-stack ERP systems with Node.js and SQL Server, implementing JWT-based RBAC and complex query workflows to automate invoicing.
Capabilities
Tools I work with.
Languages & Frameworks
- Python
- TypeScript
- JavaScript
- C#
- .NET
- FastAPI
- React
- Angular
- Astro
AI & Data Systems
- LangChain
- LangGraph
- PyTorch
- Vector Search
- Embeddings
- Prompt Engineering
Infrastructure & Delivery
- Google Cloud
- Docker
- AWS
- REST APIs
- Node.js
- SQL Server
- PostgreSQL
- SQL
- Git
Selected Work
Projects
bedtime.ai
Multi-Modal AI Storytelling Platform
- 4 models orchestrated in a single pipeline
- ~70% classification accuracy on children's drawings
- 35 backend + 19 frontend tests
Abliteration for LFM2.5
LLM Interpretability via Weight Orthogonalization
- Identified refusal directions in LFM2.5-1.2B residual streams
- Removed refusal behavior via weight orthogonalization — no retraining
- Cut refusal rate from 50% to ~37%
Nier Archive
Real-Time Collaborative Site
- Live cursor sharing and viewer presence across sessions
- Stateful WebSocket coordination via Cloudflare Durable Objects
- Custom Vite markdown pipeline for blog content
Yomiji
Offline-First WaniKani Android Client
- SQLite incremental sync with pending-write queues
- Romaji-to-kana answer checking, offline-first
- Jest-covered domain logic for lessons and reviews
A containerized FastAPI service deployed on Google Cloud Run that emulates authenticated user sessions against RethinkBH endpoints to sync appointment and authorization data in real time, bypassing 24-48-hour API latency for downstream applications.
A production-ready RAG pipeline for querying Star Wars scripts with LangChain, OpenAI embeddings, and Qdrant. Expanded from a tutorial into a configurable system with prompt-injection hardening, source attribution, ~30x cost reduction using GPT-4o-mini, and a 28-test suite.
View on GitHubAn LLM agent that automates HIPAA document release workflows, orchestrating authorization checks, compliance validation, and document generation to reduce manual processing time by 60% and deliver $20K in annual savings.