Juan Barrera
Principal Member Of Technical Staff (PMTS) at Salesforce
Buenos Aires, Autonomous City of Buenos Aires, Argentina
Summary
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Senior🎓
Top SchoolJuan Barrera is a Principal Member of Technical Staff with 15+ years of experience building high-performance, distributed systems and microservices for e-commerce and SaaS platforms. He has driven large-scale migrations and product launches—most notably splitting Mercado Libre’s monolith into resilient microservices for Home, Search, and Product pages and shaping Mercado Ads and Mercado Play. At Salesforce he’s led new product development while keeping existing systems performant and reliable, blending hands-on backend expertise (Java, Go, Node.js, Postgres/MySQL/Oracle) with strong architectural judgement. Known as a technical mentor and cross-functional leader, he consistently translates business needs into scalable, user-focused solutions. Based in Buenos Aires, he combines deep operational experience with a product-minded approach to reduce latency and downtime under peak loads. He’s particularly skilled at turning legacy complexity into maintainable platforms that empower fast-moving product teams.
11 years of coding experience
18 years of employment as a software developer
Computer Science, Computer Science at University of Buenos Aires
Github Skills (45)
commerce9
nodejs9
react9
hubspot8
cart8
typescript8
javascript8
shopify8
ecommerce8
medusa8
caching7
java7
composable7
encoding7
nextjs7
Programming languages (4)
Github contributions (5)
barrerajuanjose/english-classes
Dec 2020 - Jun 2023
Contributions:29 pushes, 1 branch in 2 years 5 months
barrerajuanjose/finding-nemo
May 2020 - Jan 2021
Is a repository to find what you are looking for
Contributions:38 PRs, 59 pushes, 39 branches in 8 months
python
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