Looking for a job

Juan Luis Hernandez

@juanluishernandez

Message

I build high-scale financial platforms, KYC systems, and cloud services across Python, Java, React, and AWS.

Venezuela

Message

What I'm looking for

I'm looking to build scalable financial, payment, or cloud products where I can own systems end to end, improve performance, and solve complex integration and infrastructure challenges.

At Cryptomarket, I owned KYC tools and services end to end, reducing user onboarding from 10–15 minutes to five minutes or less while supporting growth from roughly 400,000 users to 1 million.

I've built trading and reporting microservices, payment-service-provider integrations, and financial workflows that process more than 500,000–1 million transactions in under five minutes. I focus on flexible API and database design, constrained cloud environments, and reliable payment functionality across crypto and fiat solutions.

Earlier, I developed cross-platform, augmented-reality, mobile, and back-office applications for government, law-enforcement, and financial organizations. I also lead health telemetry development and resolve production issues across frontend and backend systems.

Experience

Work history, roles, and key accomplishments

Senior Fullstack Engineer

Cryptomarket S.A

Oct 2020 - Jun 2026 (5 years 8 months)

Owned end-to-end KYC tools and services, reducing onboarding time from 10-15 minutes to under 5 minutes and scaling from 400k to 1M users. Created trading and reporting microservices, optimized database queries, and implemented deterministic developer and deployment environments.