Acerca de Jefferson Moises
Hey! I’m a Software Engineer with 4+ years of experience building real-world MERN (Node, React, TypeScript) applications. I design user-driven, scalable systems that save costs and boost performance, such as cutting DB costs by 71% or decreasing job executions from hours to 2 minutes. Using my circular knowledge in backend, frontend, and cloud, I can completely build entire vertical stacks fully ready for production. Let's discuss further your ideas!
Español
Bilingüe o nativo
Inglés
Competencia profesional completa
Catalán
Competencia profesional completa
Solo teletrabajo
Lleva a cabo sus proyectos principalmente en remoto
Experiencia
- LambdaLoopersSoftware Engineer | Enterprise Cloud & Digital Workspace OrchestrationAGENCIAS DE SUBCONTRATACIÓNfebrero de 2022 - noviembre de 2025 (3 años y 9 meses)Oviedo, España
- Shipped an event-driven application tracking module that facilitated organization-wide system performance visibility for 100,000 devices using React, GraphQL, Node.js, and TypeScript.
- Reduced MongoDB costs by 71% in less than 2 months by optimizing data structures, indexes, migrating legacy collections, enforcing clear data retention policies, and sharding the database.
- Optimized aggregation pipelines in Node.js, cutting processing time from 8 hours to less than 2 minutes.
- Implemented IaC with CI/CD pipelines using Bicep and GitHub Actions, ensuring every environment was replicable and every change was tracked within Git.
- Successfully stabilized a legacy Python codebase, reducing error rates from 70% to less than 1% by covering the code with automated testing, applying clean code practices, and adhering strictly to TDD workflow to avoid regressions.
- Built data consumers in Node.js using Azure Function that processed +20,000 events per minute from Azure Event Hub.
- FreelancerWordPress Web DeveloperCONSEJO & AUDITORÍAenero de 2020 - enero de 2022 (2 años)Spain
- Developed custom WordPress themes and plugins using PHP, JavaScript, and the WordPress Hooks API, eliminating 3rd party software subscription costs for specific simple use cases.
- Delivered websites under tight deadlines for time-sensitive launches by leveraging boilerplate templates and reusable components from the WordPress Core.
- Optimized search rankings and performance metrics by implementing schema markup, metadata structures, and caching with specific infrastructure configurations in Nginx, Apache, and writing optimized JavaScript and PHP code.
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Formación
- Bachelor in Computer ScienceUniversitat Oberta de Catalunya (UOC)
Certificados
- Microsoft Certified: Azure Developer AssociateMicrosoft2023