Hello — I'm Kevin
Senior Backend Engineer. Building systems that can't fail.
8+ years engineering risk and fraud-prevention systems at scale. Now building reliable digital products for growing businesses.
8+
years engineering mission-critical systems
20+
microservices in a risk & fraud platform
5–10×
performance gain from a custom Redis cache layer
Technical Experience
Scale that can't afford downtime
Risk & fraud-prevention systems
Designed and maintained risk and fraud-prevention systems across a service-oriented architecture of 20+ microservices.
Custom Redis caching layer
Delivered a 5 to 10× performance improvement through a custom Redis caching layer.
Distributed data at scale
Worked with large-scale distributed data models — Cassandra, 10,000+ key-value pairs per record.
Legacy payment modernization
Resolved over a decade of accumulated technical debt in legacy payment systems.
About
About Kevin Juárez
8+ years building mission-critical, high-volume systems — now applied to digital products for growing businesses.
I'm a software engineer with a foundation in Systems Engineering and a Master's in Information Systems Management. For over six years I designed and built mission-critical risk systems, working across a 20+ microservice architecture that couldn't afford downtime.
Outside of engineering, I've spent over a decade leading youth communities, which shaped how I communicate, lead, and take ownership of outcomes. I bring that same care and integrity to every project I take on.
Featured Project
An ice cream brand's catalog platform, owned end to end.
Full-cycle freelance engagement for an ice cream brand with points of sale across Guatemala: owned everything from the client contract and technical scope to architecture, build, and launch — replacing a slow WordPress site with a fast, mobile-first catalog that non-technical staff manage themselves.
Services
Engineering discipline, applied to your product
I help growing businesses build web platforms, backend systems, automation, and AI-enabled products, backed by the same engineering discipline used to protect mission-critical, high-volume transactions.
Build from scratch
Take a product from idea to a live, reliable system.
Modernize
Reshape an existing system into something maintainable and fast.
Automate
Remove manual work with careful, measurable automation.
Contact
Let's build something reliable
Tell me what you're building and where it needs to hold up. I'll reply within a couple of days.
Prefer to reach out directly? Connect with me on LinkedIn ↗