IVAN YERRY HINOJOSA
Available for AI Systems Engineering · Remote / Global

Software Engineer & AI Systems Architect

Architecting high-concurrency distributed backends in Go, autonomous AI agent pipelines, local-first offline architectures in Flutter, and vector search systems.

Flagship Project

Dex: Personal Executive Agent

v1.2.0 · Live Product & Mobile App

An autonomous AI assistant leveraging a distributed backend and an offline-first mobile app.

Multi-LLM Fleet Orchestration

Concurrent fleet of 6 models (Groq Nemotron 120B, GPT-OSS 20B/120B, Qwen 27B, Gemini 3.5) with TPM/RPM quota control and automatic failover in Go.

Rust Local NLU (klerk-embed)

Local microservice for embeddings and intent classification in <50ms.

On-Device Hybrid RAG

Lexical search (SQLite v2 FTS5 BM25) + in-memory vector Cosine Similarity on the device.

Multi-Tenant Physical Isolation

Physical SQLite file isolation on client & PostgreSQL 16 with pgvector HNSW indices on the cloud.

Bidirectional Sync

Google Calendar OAuth2 integration with stealth offline resilience.

Technical Expertise

High-Concurrency Backend

  • Go 1.23
  • Goroutines & Channels
  • Context Propagation
  • Zero Data Races (-race)
  • REST APIs

Local-First Mobile

  • Flutter 3
  • Riverpod State Machines
  • SQLite v2 Relational
  • Repository Pattern
  • Clean Architecture

Applied AI & Vector Systems

  • PostgreSQL pgvector & HNSW
  • Rust NLU
  • Structured Guardrails
  • Deterministic Function Calling

Edge & Cloud Infrastructure

  • Caddy 2 Reverse Proxy
  • TLS 1.3 Let's Encrypt
  • Docker Compose
  • Linux Hardening
  • Oracle Cloud ARM64