Julián Jara

Full Stack Developer

Building scalable systems, products & startups

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01 — About

About.

Full Stack Developer based in Buenos Aires, Argentina. I have a strong focus on backend architecture, scalable systems, and building real-world products that people actually use — from a SaaS ERP running live companies to a hosting platform with thousands of active users.

I approach software with a founder mindset — thinking beyond code to product, design, and user experience. I thrive on building end-to-end solutions from concept to deployment.

My experience spans internal systems, e-commerce platforms, business tools, and infrastructure management — plus an open-source npm package I maintain for the WhatsApp Cloud API. Always pushing for clean architecture and reliable systems.

Frontend

ReactNext.jsReact NativeTypeScriptTailwindCSS

Backend

Node.jsExpresstRPCWebSocketsPrismaPostgreSQLMySQLMongoDBSQL Server

Other

API ArchitectureERP IntegrationWhatsApp Cloud APISystem DesignInfrastructureDev Tooling

02 — Experience

Career.

June 2025

Care-Quip

Full Stack Developer

Company · care-quip.com.ar

Built the B2B/B2C e-commerce platform for a national medical & orthopedic distributor (30+ years, 2,000+ points of sale)
Integrated the platform with their ERP and stock system, with SQL Server stored procedures for orders and inventory
Shipped automated order/email notifications and a WhatsApp integration for commercial contact

February 2021

Amén Argentina

Developer

Company · amenargentina.com

Developed internal business systems for an 18-year, award-winning advertising agency
Built and maintained e-commerce platforms and client tools
Backend integrations and business logic

03 — Projects

Featured Work.

Products and platforms I've built from the ground up.

Project

StarNode

Game Server Hosting Platform

Spin up a Minecraft server in 60 seconds, no technical knowledge required. Custom control panel, 1-click mod installs, automated backups and anti-DDoS included.

2,400+ servers created99.9% uptime4,200+ active players1,800+ Discord membersViral growth via TikTok

Visit site

Project

FinFlow

ERP for SMEs, no per-user pricing

SaaS business management platform with a fixed monthly price and unlimited users: AFIP e-invoicing, stock management, integrated accounting, running balances, and multi-branch reporting.

AFIP e-invoicingStock managementIntegrated accountingMulti-branch reporting

Visit site

Project

whatsapp.js

Open Source npm Package

A fully-typed WhatsApp Cloud API client for Node.js. Messaging, webhooks, Flows, groups, templates and calling — all through one unified API. MIT licensed, actively maintained.

@thejulianjara/whatsapp.jsTypeScript, MIT license13 releases (v2.1.0)Webhooks & WhatsApp Flows

View on GitHub

04 — Skills

Technologies.

Stack

Technologies

React

Next.js

TypeScript

TailwindCSS

Node.js

tRPC

Express

WebSockets

Prisma

PostgreSQL

SQL Server

Docker

Linux

Nginx

Redis

React Native

MySQL

MongoDB

Daily Driver

Core tools I use every day to build products.

ReactNext.jsTypeScriptTailwindCSSNode.js

Experienced

Solid experience in production environments.

tRPCExpressWebSocketsPrismaPostgreSQLSQL Server

Familiar

Working knowledge, used in real projects.

DockerLinuxNginxRedisReact NativeMySQLMongoDB

05 — Contact

Let's connect.

I'm always open to new opportunities, collaborations, and interesting projects. Feel free to reach out.

me@thejulianjara.com→

GitHub

github.com/TheJulianJara→

linkedin.com/in/thejulianjara→