Jorge Enrique Miralles Betancourt
Verified Expert in Engineering
Software Engineer and Developer
Cape Coral, FL, United States
Toptal member since May 8, 2025
Jorge is a senior software engineer with experience in designing, deploying, and optimizing large-scale distributed systems using Apache Pulsar, Java, and Spring Boot. He is skilled in fine-tuning high-throughput messaging platforms and event-driven architectures for on-prem and cloud environments. Jorge's expertise includes containerization and microservices, with a strong focus on scalability, reliability, and performance optimization.
Portfolio
Experience
- SQL - 12 years
- Java - 12 years
- Spring Boot - 10 years
- Docker - 8 years
- JavaScript - 8 years
- AWS IoT - 7 years
- Apache Pulsar - 7 years
- React - 6 years
Preferred Environment
Linux, MacOS, Spring Boot, Amazon, Unix, Back-end Development
The most amazing...
...thing I've implemented is BigQ, an Apache Pulsar wrapper service, to handle over 30 million requests per minute (RPM) with response times under 10ms.
Work Experience
Senior AWS/Back-end Developer
Productiv, Inc
- Designed and implemented the back end for AI-driven contract ingestion workflow, centered on the ingestion worker service (IWS), the core orchestrator of the document ingestion pipeline.
- Built resilient systems that integrate contract data from multiple enterprise connectors, enabling large-scale automated analysis and enrichment of vendor agreements.
- Enhanced fault tolerance and scalability by introducing improved error handling, retry mechanisms, and modular service architecture.
Senior AWS/Back-end Developer
Productiv, Inc
- Designed and implemented the back end for AI-driven contract ingestion workflow, centered on the ingestion worker service (IWS), the core orchestrator of the document ingestion pipeline.
- Built resilient systems that integrate contract data from multiple enterprise connectors, enabling large-scale automated analysis and enrichment of vendor agreements.
- Enhanced fault tolerance and scalability by introducing improved error handling, retry mechanisms, and modular service architecture.
Full-stack Engineer
Tented, Inc.
- Built and shipped a production-ready public API (Node.js and AWS Lambda) with async job orchestration (SNS to SQS), DynamoDB persistence, idempotent request handling, and secure bearer token validation via Lambda Authorizer.
- Architected and delivered an AI image generation feature for a landing-page builder, integrating OpenRouter with AWS SNS/SQS, LLM-based intent routing, idempotent job processing, S3 asset storage, per-image credit billing, and HTML asset injection.
- Built a secure webhook automation feature (end-to-end). Added POST/PUT/GET support, JWT auth with AWS Secrets Manager, back-end and React UI updates, Lambda execution, SSRF protection, feature flags, and full unit and integration test coverage.
Senior Software Engineer
MartinBros
- Designed and delivered scalable, cloud native back-end systems using Java 21 and Spring within an Agile environment.
- Led microservice modernization initiatives, breaking down legacy systems into containerized components deployed on AWS.
- Contributed to architectural decisions for system decomposition, observability, and performance optimization.
- Applied AI-assisted development tools to optimize development workflows and code reviews, boosting productivity and reducing review cycle times.
Software Engineer
Independent
- Built a responsive single-page application using React and Firebase.
- Implemented features such as user authentication, data storage, and real-time updates using Firebase services.
- Headed the architectural design and security model for a full-stack framework in PHP and Node.js.
- Implemented core classes, ORM layers, RBAC architecture, different OAuth modules, and front-end support using Ext JS, Bootstrap, and Angular.
- Designed Android app and back-end architecture in PHP with Raptor 2.
- Integrated CRUD logic, optimized search algorithms, and deployed to production.
Senior Sofware Engineer
MercadoLibre
- Collaborated with MercadoLibre, the biggest eCommerce company and the most valuable company currently in LATAM.
- Improved service performance by iteratively optimizing system architecture and implementing reactive microservices using Spring Boot (WebFlux) and Netty, achieving up to 30% lower latency and reduced resource consumption.
- Took ownership of BigQ, a small-scale messaging service based on Apache Pulsar, and led its transformation into a world-class, enterprise-grade messaging platform.
- Maintained strict performance SLAs with under 20ms average response time, a throughput of 30 million messages per minute across over 30 Apache Pulsar clusters.
- Increased BigQ's resilience and observability by implementing high-availability strategies like failover, backup, and multi-region, as well as improving monitoring and logging practices.
- Upgraded Pulsar from early incubator versions to production-ready releases, including custom ARM builds to reduce cloud costs by up to 40%.
- Tuned Broker, Bookie, and Zookeeper configurations for optimal performance, significantly reducing latency and improving throughput.
Mid-level Back-end Engineer
GEOCOM Uruguay
- Migrated core features from Spring 2.5 to Spring 3, improving maintainability and development speed.
- Enhanced transaction performance by 18% by profiling and integrating Redis and MongoDB.
- Delivered new features and bug fixes across 10+ sprints, improving delivery reliability in an Agile team.
- Maintained and contributed to the migration of the UI from AngularJS to React.
Software Engineer
Joven Club de Computación y Electrónica
- Developed SEAT ERP, a transportation statistics system, increasing operational efficiency by 68%.
- Designed and implemented multiple systems using PHP (Symfony and Raptor 2), PostgreSQL, and Android integration.
- Built a C++ authentication plugin for Unix and integrated a biometric security system.
- Headed architectural and database design for internal government and infrastructure systems, including SEAT ERP, AlmaXen—a warehouse inventory system—and government problem bank management.
Experience
Web Portal for Commercial Driver's License School
IWS - AI Contract Ingestion
https://productiv.com/Education
Bachelor's Degree in Computer Science
University of Informatics Sciences - Havana, Cuba
Skills
Libraries/APIs
Node.js, REST APIs, API Development, OpenAI API, React, jQuery
Tools
GitHub, Microsoft Excel, Amazon CloudWatch, GitHub CLI, AWS CloudFormation, Docker Compose, Amazon Simple Queue Service (SQS), Auth0, Amazon EKS, Claude, Codex, ChatGPT, Claude Code, RabbitMQ, Terraform, GitLab CI/CD, Google Kubernetes Engine (GKE), n8n
Languages
Java, JavaScript, TypeScript, SQL, Python, PHP, HTML, HTML5, C++, GraphQL, Go, Java 8
Frameworks
Spring Boot, Spring 3, Express.js, JSON Web Tokens (JWT), Selenium, Spring, Laravel, Spring Microservice, Angular, Ruby on Rails (RoR), Tailwind CSS, Redux, Spring 6, NestJS
Paradigms
Agile, Scrum, Microservices, Database Design, Model View ViewModel (MVVM), Test-driven Development (TDD), Asynchronous Programming, Load Testing, Code Refactoring, Role-based Access Control (RBAC), Event-driven Architecture, DevOps, Microservices Architecture, API-first Development, ETL, Model Context Protocol (MCP), Event Sourcing
Platforms
Google Cloud Platform (GCP), Amazon Web Services (AWS), Web, Unix, Linux, AWS IoT, Amazon EC2, AWS Lambda, Docker, Apache Kafka, Cloud Native, MacOS, Android, Firebase, Amazon, Kubernetes
Storage
PostgreSQL, MySQL, JSON, Amazon DynamoDB, Amazon S3 (AWS S3), Redis, NoSQL, MongoDB, Google Cloud
Other
Engineering Software, CI/CD Pipelines, API Integration, Distributed Architecture, Back-end, Documentation, Message Queues, Large Language Models (LLMs), APIs, Architecture, Full-stack, Web Development, Troubleshooting & Issue Resolution, Communication, Web Applications, Software Architecture, RESTFul APIs, Performance Tuning, Amazon EventBridge, Full-stack Development, SDKs, Performance Optimization, CSV File Processing, Patterns, Application State Management, QA Testing, Bug Fixes, Cloud, User Authentication, Webhooks, Cloud Architecture, Early-stage Startups, Infrastructure, Scalability, Vibe Coding, Back-end Development, Scaling, Standardization, API Design, Code Auditing, Optimization, Technical Documentation, Legacy Code, Software Development, Software Engineering, Apache Pulsar, Amazon Kinesis, Distributed Systems, Large-scale Distributed Systems, Infrastructure as Code (IaC), Mentorship, Cloud Applications, Supabase, Data Processing Automation, Reporting Automation, WebSockets, Reports, Cursor AI, AI-generated Code, Coaching, Technical Leadership, GitHub Actions, Artificial Intelligence (AI), Payment APIs, AI Tools, System Architecture, Quarkus, OAuth, Containerization, Workflow Design, Data Build Tool (dbt), Data Engineering, Okta, Single Sign-on (SSO), AI Integration, ChatGPT API, AI Chatbots, AI Agents, Team Leadership, Data Modeling, Vite, Cloudflare
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