l
leofernandez20

Leonel F.

@leofernandez20

Full Stack Developer Nodejs APIs and Business Softw

Argentina
Spanish
About me
I am a Full Stack Developer specialized in backend systems and business management software. I build REST APIs, inventory systems, admin dashboards and automation tools using Node.js, Express, React and SQL databases. Recently I developed a business management system for hardware stores that imports supplier Excel lists, calculates prices automatically and manages inventory. I focus on clean architecture, reliable backend systems and practical solutions for real businesses.... Read more

Skills

l
leofernandez20
Leonel F.
Offline • 
Average response time: 35 hours

See my services

Custom Websites
I will fix bugs in your nodejs backend or rest api
From$80 / projectMore details
API & Integrations
I will develop backend rest API with nodejs, express and mysql
From$25 / projectMore details

Portfolio

Work experience

Full Stack Developer

Feraytek Systems • Freelance

Jan 2024 - Present • 2 yrs 4 mos

Designed and developed business management systems using Node.js, Express, React and SQL databases. Built inventory management platforms, REST APIs and admin dashboards for business operations. Recently developed a system for hardware stores that imports supplier Excel lists, automatically calculates product prices using margin rules and manages inventory and suppliers. Focused on backend architecture, automation and practical software solutions for real businesses.