Renny Valera
Software Architect & Senior Developer | Backend · Microservices · Cloud-Native
I build systems that scale.
Software Architect. I design the architecture and build it too — a holistic, end-to-end vision from mission-critical backend to the frontend. Specialized in enterprise, cloud-native and event-driven systems, I turn complex problems into solid, scalable, maintainable software — all the way to frontiers like decentralization and 3D games.
What I solve
Scalability & Integration
Systems that don't talk to each other? An architecture that falls over when traffic grows? I design microservices and event-driven architectures (Kafka, Spring Boot, Quarkus) that connect the unconnectable and scale without breaking. Real experience with enterprise clouds (OpenShift), API management (3scale) and security (Keycloak/OAuth2).
Systems that grow with you, not against you.
Innovation & New Frontiers
The next competitive edge is rarely in the familiar. I explore and build with decentralized technologies (P2P, WebRTC, blockchain): real-time communication without intermediaries, resilient architectures and distributed trust models.
A product that leads, instead of chasing.
Interactivity & Experiences
Software doesn't just have to work: it has to feel good. I build 3D mechanics, physics and interactive experiences that go beyond the form and the dashboard.
Products people remember and want to come back to.
How I work
I don't write code. I build assets.
Architecture first
A solid base today avoids painfully expensive rewrites tomorrow. I think about the whole system, not the patch of the day.
Genuinely clean code
Readable, tested and maintainable — because code is read far more than it's written.
Product mindset
I don't ship features; I ship solutions to a real business problem. I ask why before how.
Adaptability
From legacy JavaEE to modern cloud-native: I pick the right tool for the problem, not the trendy one.
Professional Summary
Java Developer with 8+ years of experience building enterprise applications, REST microservices, and event-driven systems. Deep expertise in Java (Quarkus, Spring Boot, Spring MVC, JavaEE), API security with Keycloak (OAuth2/JWT), and API management through 3scale. Experienced with OpenShift, Kubernetes, and Docker for cloud-native deployments, and with Apache Kafka and ActiveMQ for asynchronous messaging. Having worked across both frontend and backend, I bring a holistic understanding of end-to-end software architecture. Additional background in .NET/C#, frontend development with React (JavaScript/TypeScript), NestJS, and DataGrid. Holds a C1 Advanced English certificate and strong experience in DDD, microservices, and event-driven architectures.
Technical Skills
Backend
Frontend
Databases
Cloud & DevOps
API Management
Messaging
Observability
Architecture
Testing
Methodology
AI / LLM
Professional Experience
Service Integration Lead
September 2023 - PresentTelefonica · Venezuela
- Designed and led integration of backend services using Java and REST microservices architecture.
- Applied Keycloak for OAuth2/JWT-based authentication and API Gateway security.
- Managed API lifecycle and traffic policies using 3scale API Management.
- Deployed and maintained services on OpenShift (Red Hat) with Docker containerization.
- Implemented CI/CD pipelines to streamline build, test, and deployment workflows.
- Used Apache Kafka for event-driven inter-service communication.
- Leveraged Redis for caching and session management.
Software Engineer - Java Consultant
September 2022 - December 2023DirMOD · Argentina
- Delivered Java consulting services, developing and reviewing microservices-based solutions.
- Built event-driven microservices with Spring Boot and Apache Kafka.
- Implemented JWT/OAuth2 security patterns for API authentication.
- Worked with PostgreSQL and MongoDB for data persistence in distributed systems.
- Contributed to containerized deployments using Docker and Kubernetes.
Software Engineer
April 2022 - August 2022Zutun · Lima, Peru · 🔗 insuma.com.pe
- Worked on Insuma, a multi-tenant insurance platform, integrating reporting services into the existing Java-based system.
- Worked with REST APIs and Spring Boot to expose reporting capabilities across tenants.
Software Developer - Java Consultant
April 2018 - April 2022DBAccess / Paxer · 🔗 paxer.com
- Developed and maintained Java enterprise applications for multiple client projects.
- Worked on Paxer, a PHP/Java Property Management System (PMS), developing and maintaining features across the stack.
- Built microservices with Spring Boot, integrating AS400 systems via sockets and message queues.
- Used Apache Kafka and ActiveMQ for asynchronous messaging and event-driven workflows.
- Designed REST APIs with JWT/OAuth2 authentication consumed by web and mobile clients.
- Managed relational databases (PostgreSQL, MySQL, SQL Server) and MongoDB.
- Collaborated on Docker-based containerization and application deployment.
Software Developer - .NET
January 2018 - April 2018Legendsoft · Miranda, Venezuela
- Developed business applications using .NET MVC 5 (C#).
- Built MVC web interfaces and integrated SQL Server backend data layers.
Software Developer
July 2016 - December 2017IQuantics Corp
- Developed enterprise .NET and Java applications for corporate clients.
- Worked with WCF services for data storage and SQL Server migrations from AS400 using SSIS.
- Built Reporting Services reports from SQL Server data.
Projects
AI-Powered CV / Portfolio Website
Next.js · TypeScript · Ollama · Cloudflare Tunnel
- Built a personal portfolio site with an integrated AI chatbot that answers questions about my professional background.
- Integrated a self-hosted LLM (Qwen on Ollama) running on local hardware, exposed securely through a Cloudflare Tunnel.
Education
Bachelor of Computer Engineering (Ingenieria Informatica)
Universidad Alejandro de Humboldt
2013 - 2017Certifications
- EF SET English Certificate - C1 Advanced (66/100)
- Java Unit Testing with JUnit and Mockito
- Modern Software Architecture: DDD, Events, Microservices
Tinkering
Drones
Building and tinkering with drones — from assembly and configuration to experimenting with flight controllers.
Game Development
Creating video games with Unity (C#) in my spare time — exploring gameplay mechanics, physics, and 3D.
Let's talk architecture
The best engineering comes from talking to others obsessed with the same things. If you get excited debating event-driven, microservice trade-offs, P2P or how to simulate decent physics in a game, let's connect.
Got a repo to collaborate on? An indie project idea? A strong opinion on why your stack is better? Write to me. No egos here, just curiosity.
👨💻 Let's collaborate on GitHubWork with me
💼 Book a consultation
Describe what you need. A local AI estimates a fair price ($5–$50) based on scope, then you pay securely via PayPal.