About Me
Systems engineer, technical leader, and founder with 12+ years building high-impact platforms.
I'm Ronald Castillo, a Technical Leader with deep expertise in microservices architecture, AWS cloud, AI transformation, and security in regulated environments. I lead high-performance teams in fintech, build SaaS platforms, and teach software development at universities.
Experience
Technical Lead, B2C Tribe
LIGO
- ›3 squads (B2Crafters, Area51, Extreme Ligo), 40+ microservices on AWS EKS
- ›AI roadmap: AgentCore platform with MCP Servers, Amazon Bedrock (Claude), Amazon Q Business for knowledge management, and AI agentization to delegate operational tasks to the engineering team
- ›Designed and led a 7-phase security hardening program for the B2C platform
- ›Wallet B2C refactor: 4 microservices, 17 business day sprint
- ›P1 incident management (fraud, BCRP regulatory incident)
- ›AWS networking: API Gateway, ALB, EKS, PrivateLink cross-account
Professor, Web Application Development II
CIBERTEC
- ›University-level fullstack web development instruction
IT Teacher
IDAT
- ›Teaching IT and software development courses
Founder (Strategic Role)
Tech Safe Latam SAC
- ›ERP SaaS for SMBs with consolidated client base
- ›Automated operations, passive income model
- ›Outsourced: accounting, finance, support
Technical Leader
Kripto Payment Solutions
- ›End-to-end dev team leadership (NodeJS, Java, .NET)
- ›EDA + microservices architecture
- ›AWS: EKS, Lambda, RDS, DynamoDB, SQS — CI/CD and monitoring
IT Teacher
ZEGEL
- ›Teaching IT and programming courses
Senior Software Engineer Full Stack SSR
Kripto Payment Solutions
- ›Full stack (NodeJS / Java / .NET), EDA architecture
- ›AWS services, security (JWT, RSA)
Senior Software Engineer
PaySafe
- ›Automation solutions, SOLID/TDD, AWS
IT Consultant, ERP SIDIGE
Consulting
- ›SAP integration, data modeling, ETL
System Coordinator
PRODAC
- ›ERP migration SIDIGE→SAP, web app development
Systems Manager
Grupo Telepartes / Grating Perú
- ›ERP implementation, Java microservices, full stack
Skills
Leadership
Cloud & Architecture
Artificial Intelligence
Security & Compliance
Backend
Frontend & Mobile
DevOps & CI/CD
Languages
Education
Executive MBA
Universidad Peruana de Ciencias Aplicadas (UPC)
In progress
Business management, strategy, corporate finance, and organizational leadership.
Systems Engineering
Universidad Peruana de Ciencias Aplicadas (UPC)
2016 – 2021
Software architecture, networking, databases, applied mathematics, and project management.
Certifications
EMV Contact & Contactless Masterclass
Fime
EMV standards for contact and contactless payments — relevant for fintech payment stacks.
SQL for Data Science Specialization
Coursera (UC Davis)
4 courses + Capstone. Advanced SQL, data analysis, and applied data science.
Advanced Flutter, UI/UX and Mobile Development
Udemy
Cross-platform mobile development with Flutter for iOS and Android.
Master in .NET 6 Identity, Authentication and Authorization
Udemy
.NET API security: JWT, refresh tokens, OAuth2, roles and policies.