// Hello, world

KRLZ.

Software Engineer, MSc. Full-stack architect building scalable systems with 14+ years of craft.

View my work
Scroll
01 / About
Carlos Rojas — Software Engineer
Hey, I'm Carlos — a software engineer with 14+ years specializing in microservices architecture and modern web technologies.

MSc. in Software Engineering from Innopolis University, Russia. I have deep experience across the full software development lifecycle — from cloud-native backends and data modeling to pixel-perfect frontends. I've shipped healthcare platforms processing millions of patient records, logistics and telemetry systems, and AI-powered applications.

Currently researching and building AI projects with LangChain and RAG architectures for intelligent, scalable, data-driven systems. I thrive on solving complex problems and leading technical initiatives in cross-functional teams.

14+
Years Experience
6
Countries Worked
∞
Cups of Coffee
02 / Tech Stack

Languages

TypeScriptJavaScriptJavaScalaPythonHTML / CSSBash

Frontend

ReactNext.jsAngularSvelteVuePolymerTailwind CSS

Backend

Spring BootNode.jsExpressAkkaFlaskLangChainREST APIs

Data & Messaging

PostgreSQLMySQLRedisKafkaRabbitMQDynamoDBElasticSearch

DevOps & Cloud

DockerKubernetesAWSJenkinsCI/CDLinuxGit

Architecture & Testing

MicroservicesMVCOODFunctional PatternsOAuth2 / OpenIDPlaywrightPuppeteer
03 / Projects
01

kit-a — Architecture & Planning Toolkit

Browser-based toolkit for designing system architecture diagrams and project timelines with drag-and-drop, smart connections, and multi-format export.

ReactTypeScriptCanvas APINode.jsCloud Storage
View project
02

ZooMinder — Pet Medication Tracker

Android app for scheduling pet medication reminders, logging doses automatically, and maintaining treatment histories across multiple pets.

AndroidKotlinCloud SyncGoogle Play
View project
03

Constitutional AI Assistant

AI-powered legal assistant built on a simplified RAG architecture, designed to prevent hallucinations when querying Bolivia's constitutional data.

PythonLangChainRAGNext.jsVercel
View project
04

Logistics & Telemetry Platform

Full-stack development of logistics and telemetry software at TrackTec, integrating legacy systems with Kafka, automated data pipelines, and AWS infrastructure.

JavaSpring BootAngularPythonKafkaAWSPostgreSQLRedis
View project
05

Healthcare FHIR System

Led implementation of FHIR HAPI-based healthcare software for the Tatarstan government, including backend architecture, Python tooling, and Kafka-based legacy integration.

JavaSpring BootFHIR HAPIPythonKafkaReactNext.jsPostgreSQL
View project
06

DVZA Healthcare Platform

Data services platform for Dutch healthcare institutions, processing millions of patient records while complying with Medmij and FHIR standards.

ScalaAkkaKafkaPostgreSQLCitusReactFHIR
View project
07

Application-Aware Disaster Recovery

Research project at Acronis exploring innovative disaster recovery approaches, resulting in a published academic paper on data resilience techniques.

Windows KernelIDA DisassemblerVirtual MachinesPython
View project
08

COFAR Labs Data Systems

System module improvements and monolith-to-microservices migration for a pharmaceutical laboratory's data analysis platform.

JavaMicroservicesPostgreSQLREST APIs
View project
09

E-Constitucional

Bolivia's first free online constitutional encyclopedia, built in collaboration with former President Eduardo Rodriguez Veltze and an interdisciplinary research team.

PHPPostgreSQLHTML / CSSJavaScript
View project
04 / Contact

Let's talk.

Got a project in mind or just want to say hi? I'm always open to new opportunities and interesting conversations.

EmailGitHubLinkedIn