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Software Engineer · Developer · Solutions Architect
Ecuador · Spanish (native) · English (B2+)
Hi, I’m Jefferson Leon 👋
Software Engineer · Developer · Solutions Architect
Amazon Web Services
Arcitura
Arcitura
I build reliable, scalable systems — from event-driven backends and microservices to Cloud architectures and frontends.
I enjoy turning complex problems into clean designs and production-ready code that balances performance, resilience, and developer happiness.
About me
- +5 years across fintech, telecom, and SaaS
- Microservices, event-driven, hexagonal, DDD, and pragmatic SOA
- AWS heavy hitter across compute, serverless, decoupling, data, and observability domains
- CI/CD pipelines, code quality, and observability-first mindset
- I value clarity, documentation, feedback loops, and focused delivery
- Performance geek and optimization fan — happy mad scientist ⚗️
- Driven by new challenges and constant learning
EXPERIENCE
Software Engineer • Alegra
12/2024 — 11/2025
Developed and maintained backend services for financial systems in PHP/Laravel and Node.js. Migrated components toward Node.js microservices and designed event-driven integration using Kafka and AWS SNS/SQS. Implemented serverless functions with AWS Lambda and optimized persistence on Aurora and DynamoDB applying DDD and hexagonal architecture.
Software Engineer • Telconet
12/2021 — 11/2024
Designed and implemented microservices with Spring Boot and Laravel, integrating asynchronous messaging with Kafka. Built enterprise web interfaces with React.js. Containerized and deployed services with Docker and Docker Swarm, and optimized data in PostgreSQL and Oracle within an Agile/Scrum environment using Git and CI/CD.
Software Engineer • Ambiensa
01/2020 — 11/2021
Built a CRM (React + Laravel) for lead/customer management, visit tracking, and document uploads. Integrated AWS for data extraction and scoring. Developed React Native mobile apps (customers and internal team) with process traceability, and built a React payments web app integrating the Pagomedios API. Used Docker to standardize environments.
Core Strengths
Focused on sound architecture, resilient delivery, and developer-friendly practices across the stack.
Backend & APIs
Frontend & Mobile
Data & Messaging
Cloud & AWS
Ops & Platform
Architecture
Personal Projects
End-to-end authorization platform using the Cedar policy language. Features a high-performance Rust PDP, NestJS API, and an Astro/React dashboard for policy management.
Microservices ecosystem with Laravel + React, RabbitMQ messaging, and DDD/Hexagonal patterns for resilient flows.
Order service with CQRS + Event Sourcing, SQLite projections, outbox dispatcher, metrics, and k6 performance tests.
End-to-end HLS streaming platform featuring transcoding pipelines, search, analytics, and edge delivery.
Open-source Kavita companion with OPDS browsing, offline downloads, and sync across Android/iOS.
Cross-platform tray app to monitor dev ports & Docker workloads with smart kill and resource alerts.
Rust fantasy console compiling games to WASM with a minimal runtime powered by Winit and Pixels.
Provider-agnostic LLM gateway with quotas, rate limits, streaming, and privacy controls backed by Rust.
Chrome extension to capture timestamped YouTube notes and jump back instantly to recorded markers.