Backend Developer · End-to-end systems
Javier Zader
I build backend systems in Java, Go and Rust — from industrial platforms running predictive ML on edge hardware to AI-powered dev tools that write and review code. 20+ years in tech.
Featured Projects
A selection of recent work
- Curated
Biogas Platform
An industrial platform for biogas plants in production: real-time MQTT telemetry ingestion, three-layer anomaly detection (Rust + ONNX at the edge, a cloud ensemble), and multi-tenancy with real row-level security in Postgres.
GoMosquitto MQTTRust+13 - Curated
APiGen
A code-generation platform: from a SQL schema or an OpenAPI contract to a backend service that compiles —not a scaffold, a production-shaped service you keep owning afterward.
JavaSpring BootGraphQL+7 - Curated
APiGen Studio
A visual designer for Spring Boot APIs: model entities and services on a canvas and export a project that compiles —a single service (monolith) or several that talk to each other (microservices).
ReactTypeScriptReact Flow+7
About me
I build systems end to end — from analysis to deploy: backend, frontend and ML on the edge
My Story
Hi, I'm Javier — a Software Development Technician (Universidad Gastón Dachary, 2025) working out of Córdoba, Argentina. My path into tech started 20+ years ago in IT support and hardware maintenance; later I spent several years running a farm, where a bad call costs you a season, not a rollback.
Over the past year I've focused on building complete, end-to-end projects: backends in Java/Spring, Go and Rust; React frontends; ML pipelines with inference at the edge; and developer tooling — multi-agent AI code review, starter templates for new projects, and automated setup for fresh dev machines. Every project pushes me into a new stack.
How I work
- Understand the problem before writing code. I take the time to read, discuss and map out what I'm solving before the first line.
- Technical decisions with the tradeoff spelled out. Every choice has a cost; I pick deliberately and can explain why.
- Tests and observability as proof. Every change ships with signals that make production risk visible and understandable.
What I work with
- Backend: Java/Spring Boot, Go (Gin), Rust (Axum/Tokio), Python (FastAPI)
- Frontend: React, Next.js, Vite, Mantine, Zustand, Zod, React Flow
- Industrial edge: Modbus TCP/RTU, MQTT, local ML inference with ONNX
- ML pipelines: training in Python, inference in Rust with parity tests, SHAP for explainability
- AI tooling: MCP servers, multi-agent systems, SAST/SCA integration (Semgrep, Trivy, Gitleaks)
- DevOps: Docker, GitLab CI, GitHub Actions
- Spec-Driven Development with OpenSpec, conventional commits
Technical Skills
Backend
Frontend
Databases
DevOps & Tools
Education
- Software Development Technician
Universidad Gastón Dachary · 2023 - 2025
- ONE Tech Foundation G8 — Data Science, ETL & ML
Alura LATAM · 2024 - 2025
- Java & Spring Boot G6 — ONE
Alura LATAM · 2024
- Argentina Programa
Intermediate Java Developer · 2022 - 2023
- CCNA Certification
Fundación Proydesa · 2009