I'm Uttam, a Rust backend developer based in Jharkhand, India. I build APIs with Axum, Tokio, and PostgreSQL, alongside local AI applications and developer tools.
I've worked on production APIs, authentication, and database integrations for a multi-tenant CRM. Now I'm going deeper into concurrency and local inference through my own projects.
A Windows voice assistant that listens locally, remembers context, and asks before taking sensitive actions.
Listen
Parakeet
Agent
Memory & tools
Reply
Supertone
Parakeet recognizes speech locally, then an agent with memory and tools processes the request using language models via OpenRouter. Supertone speaks the reply. Sensitive actions require approval.
Rust
Tauri v2
ONNX Runtime
Engineering details for Boris
Separate Rust crates for audio, inference, agent tools, and desktop integration.
Language models via OpenRouter, with approval required for sensitive tools.
Local wake-word detection, persistent sessions, and signed in-app updates.
Full stack · Rust · Tokio · Tauri v2 · ONNX Runtime · cpal · Parakeet · Silero VAD · Supertone
02
Calorine API
2026
The backend for a calorie-tracking app, with secure sign-in, meal photo storage, and AI nutrition analysis.
Calorine API
PostgreSQL
Data
Cloudflare R2
Photos
OpenRouter
Meal analysis
Calorine API connects to PostgreSQL for application data through SQLx, Cloudflare R2 for meal photos, and OpenRouter for AI meal analysis.
Rust
Axum
PostgreSQL
Engineering details for Calorine API
Google OAuth and JWT sessions with CSRF protection.
Async request handling with Tokio, structured tracing, typed errors, and SQLx migrations.
Full stack · Rust · Axum · Tokio · PostgreSQL · SQLx · JWT · Google OAuth 2.0 · Cloudflare R2 · OpenRouter
02
Experience
Async Integrations d.o.o.
Junior Backend Developer
Mar 2025 – Aug 2025
Remote (Zagreb, Croatia)
Developed backend services for a multi-tenant CRM platform using FastAPI and PostgreSQL.
Improved API performance through query optimization and database indexing.
Integrated the Pipedrive CRM API with retry logic and fault-tolerant error handling for reliable data synchronization.
Containerized and deployed services to DigitalOcean, managing production configuration and environments.
TOOLS I WORK WITH
Languages
RustPythonSQL
Backend
AxumTokioFastAPIREST APIsAsync ProgrammingConcurrent Systems
