Designing scalable distributed systems for AI-powered products.
Software engineer focused on system architecture: service boundaries, data flow and cloud infrastructure. I still ship the code, in TypeScript and Python.
I'm a software engineer focused on system architecture: I define service boundaries, data flow and cloud infrastructure, then build across the stack to ship it, from APIs and data layers to the interfaces and the AI on top.
As a founding engineer at Entropy Systems, I've shaped the architecture of our SaaS products for ISO standards auditing from day one. They're now used by ~40 client companies.
My work centers on the decisions that are hard to change later: how services talk to each other, where data lives, and how the system fails and recovers. I build them with TypeScript, Node and Python, and keep a long-running interest in document tooling and developer-facing libraries.
Lately that means architecting AI-powered features: retrieval, LLM orchestration, provider-agnostic speech-to-text and the production plumbing that keeps them reliable.
Where I've worked
Founding Full Stack Engineer
Entropy Systems
- Founding engineer: architected and delivered 3 SaaS products for ISO standards auditing, now used by ~40 client companies, in a small engineering team (3–5 engineers).
- Co-designed the agentic architecture and agent harness on AWS Bedrock and GCP Vertex AI. Built the Bedrock agent pipelines for document processing, conversational assistants and workflow automation: ~2,000 audit documents per month and ~60% less manual review time.
- Defined the service architecture and delivered it hands-on in TypeScript: React, Next.js and Vite on the frontend, Fastify and Node.js services on the backend.
- Built a provider-agnostic speech-to-text (STT) engine that runs on AWS Transcribe or Google Cloud's Chirp 2 and Chirp 3 models, with no changes to the calling services.
- Replaced a Puppeteer HTML-to-PDF pipeline with a Typst-based document and report generation system, cutting generation time and resource usage by ~90%.
- Owned 12 distributed services across AWS and GCP with 99.9% uptime, built on event-driven and serverless patterns and performance-tested in simulated environments before each release.
- Containerized services with Docker and built CI/CD pipelines that cut deployment time from ~1 hour to ~10 minutes, enabling daily releases.
Frontend Engineer
Vintra, Inc.
- Led migration of a ~80k-line video analytics codebase from legacy JavaScript to TypeScript, reducing production runtime errors by ~30%.
- Introduced Vite and esbuild into the build pipeline, cutting build time from ~3 min to ~20 s.
- Partnered with product and design teams to deliver consistent UI behavior across a complex, data-rich surveillance interface.
UI Development Lead
BITA GmbH
- Led a team of 4 front-end engineers building 5 index and ETF analytics applications, setting engineering standards and driving delivery quality.
- Introduced shift-left practices (code reviews, linting and automated testing), raising test coverage from ~10% to ~70%.
- Established shared component patterns and a consistent architecture across the applications.
- Contributed across the stack, delivering UI features in TypeScript and supporting backend API work in Python.
Full-Stack Engineer
BITA GmbH
- Built and maintained financial applications for index construction and ETF analytics across frontend, backend and data layers.
- Designed asynchronous RabbitMQ workflows ingesting ~1M market-data records per day.
- Developed REST APIs and backend services in Python and Node.js, backed by PostgreSQL and MongoDB.
Application Developer
Intelix Synergy
- Built 3 internal systems used daily by ~200 employees for registration, traceability and collaborator lifecycle management, using Python and Node.js.
- Developed front-end interfaces and backend services to support business operations and data tracking workflows.
- Deployed and operated services on Linux servers with NGINX as a reverse proxy.
Education
Computer Engineering
Jose Antonio Páez University · Venezuela
Computer engineering degree, with foundations in software engineering, distributed systems and mathematics.
Certifications & Learning
AWS Skill Builder
- AWS Agentic AI Demonstrated
- AWS Serverless Demonstrated
- Architecting on AWS
Google Cloud Skills Boost
- Designing Distributed Systems
DeepLearning.AI
- Neural Networks and Deep Learning
Patterns and tools I reach for
Architecture & Patterns
Cloud & Infra
Data & Messaging
Backend
AI & Automation
Languages
Dashed: currently exploring
DevOps & Tooling
Frontend
Let's build something. Let's talk →
© 2026 aesbetancourt · Senior Software Engineer