Nicolás Pedernera

Backend · AI Infrastructure · Blockchain · Fintech

Systems Engineer from Universidad de Buenos Aires (2024), focused on building backend systems, financial infrastructure, AI workflows and blockchain applications.

I build software at the intersection of backend engineering, fintech, AI and Web3, with a strong focus on deterministic systems, security and production-oriented architecture.

What I Build

Backend & APIs

• Node.js / TypeScript
• Fastify
• REST APIs
• PostgreSQL
• Docker
• Service architecture
• Testing and observability

AI Infrastructure

• AI workflow orchestration
• LLM provider abstractions
• Deterministic financial calculations
• AI-assisted automation
• Local AI infrastructure
• Human-reviewed AI development

Blockchain & Web3

• Solidity
• EVM smart contracts
• DeFi protocols
• Liquidation and margin systems
• On-chain workflow registration
• Smart-contract security
• Blockchain infrastructure

Real-Time Systems

• WebSockets
• Real-time data synchronization
• Multi-client broadcasting
• Rate limiting
• Reconnection strategies
• Market data infrastructure

Featured Engineering Projects

AI Workflow Backend

Production-oriented backend for AI workflow orchestration.

Stack: TypeScript · Node.js · Fastify · PostgreSQL · Docker · Solidity

Includes:

• Workflow execution engine
• PostgreSQL persistence
• AI provider abstraction
• Deterministic execution states
• REST API
• Automated tests
• On-chain workflow registration
• Runtime observability

→ View project

Order Matching Engine

A limit order book implemented from scratch with price-time priority.

Supports:

• Market orders
• Limit orders
• Partial fills
• Multi-level book traversal
• Order cancellation
• Deterministic matching
• Extensive edge-case testing

Stack: TypeScript · Node.js

→ View project

Real-Time Sync Engine

Real-time data synchronization infrastructure built around WebSockets.

Features:

• Exponential-backoff reconnection
• Per-key throttled broadcasting
• Multi-client fan-out
• Real-time market data
• Resilient connection management

Stack: TypeScript · Node.js · WebSockets

→ View project

DeFi Vault Contracts

Security-focused Solidity smart contracts designed around common DeFi security patterns.

Includes:

• Checks-Effects-Interactions
• Reentrancy protection
• Access control
• Deposit / withdrawal logic
• Security-focused testing

Stack: Solidity · Hardhat · TypeScript

→ View project

ZendX Chain

Blockchain infrastructure developed for the ZendX ecosystem.

Explores:

• Proof-of-Work
• UTXO architecture
• Consensus
• Peer-to-peer networking
• Wallet infrastructure
• External node operation

Stack: Rust

→ View project

Engineering Principles

Deterministic financial logic
        ↓
AI assists reasoning
        ↓
Code performs the calculation
        ↓
Tests validate the behavior
        ↓
Blockchain provides verifiable state

I believe AI should assist software systems, not replace deterministic logic.

For financial and blockchain applications, calculations that affect money, positions or risk should remain explicit, testable and reproducible.

Technology

TypeScript Node.js Fastify PostgreSQL Docker

Solidity EVM Hardhat Foundry

Rust React Next.js WebSockets

REST APIs AI Workflows LLM Infrastructure

Open Source

I publish technical projects to demonstrate how I approach:

• Backend architecture
• Financial systems
• AI infrastructure
• Smart-contract security
• Distributed systems
• Real-time applications

Connect

Portfolio: https://nicolas-pedernera.vercel.app/

GitHub: https://github.com/Nicolas-Pedernera

LinkedIn: https://www.linkedin.com/in/nicolas-pedernera-zendx/

ZendX: https://zendx.finance

GitLab: https://gitlab.com/Nicolas-Pedernera

Currently building

Backend infrastructure · AI workflows · Fintech systems · Blockchain infrastructure

Open to interesting engineering opportunities, collaborations and technical projects.

Contact

• Website: zendx.finance
• LinkedIn: nicolas-pedernera-zendx
• LinkedIn (ZendX): company/zend-x