Open to opportunities

David Latosefki

@davidlatosefki

Message

I build production backend systems, APIs, and high-performance Rust integrations.

Venezuela

Message

What I'm looking for

I'm looking to own production backend systems end to end, solve performance and architecture challenges, and build maintainable event-driven services with teams that value practical engineering decisions.

At Growthnix, I own internal Web and Android platforms end to end, from API design and development through deployment and maintenance. I reduced an accounting recalculation from 15 minutes to 36 seconds by bridging Rust to TypeScript through N-API while processing 3.3 times more data.

I've delivered multiple full-stack systems built on FastAPI, HexCore, React, TanStack Start, and Docker Compose. My work includes MRI-processing workflows, facial-access identification using pgvector, real-time SSE audit logs, and a medical follow-up platform with telemedicine.

I'm also the author and maintainer of HexCore, an MIT-licensed async Python framework on PyPI for hexagonal architecture, DDD, CQRS, and event-driven systems. I use Claude Code and MCP servers daily, and I choose tools based on the problem rather than familiarity.

Experience

Work history, roles, and key accomplishments

Current

Ingeniero de Software

Current

Growthnix

Jan 2025 - Present (1 year 7 months)

Owns the full lifecycle of internal corporate Web and Android applications. Optimized an accounting recalculation process from 15 minutes to 36 seconds by bridging Rust to TypeScript through N-API, and led the transition to simplified-maintenance architectures.