🟢 Open to freelance/contract work — ismaeltech.com
I'm a Fullstack Developer focused on building efficient end-to-end applications, intelligent automation, and robust systems. I combine solid backend architectures with dynamic user interfaces, driven by a strong interest in productivity, developer tools, and agentic development.
I have an Associate Degree in Software Development, with hands-on experience delivering real-world solutions and actively contributing to open-source software.
💡 Specialty: Bridging the gap between scalable backend systems, clean frontend interfaces, and automated workflows.
🚀 Tech Focus: Python/FastAPI • Node.js/TypeScript • React • PostgreSQL • Linux
🟢 Disponível para projetos freelance — ismaeltech.com
Sou um Desenvolvedor Fullstack focado na construção de aplicações completas e eficientes, automações inteligentes e sistemas robustos. Combino arquiteturas sólidas de backend com interfaces dinâmicas, movido por um forte interesse em produtividade, ferramentas de desenvolvimento e agentic development.
Formado em ADS, com experiência prática desenvolvendo soluções reais e contribuindo ativamente para projetos open-source.
💡 Especialidade: Conectar sistemas escaláveis de backend, interfaces de usuário limpas e fluxos automatizados de trabalho.
🚀 Tech Focus: Python/FastAPI • Node.js/TypeScript • React • PostgreSQL • Linux
🔹 Engram (Open Source — Top Contributor) ⭐ 82 🚀 Multi-agent memory consistency platform.
- 90+ merged PRs, 130+ commits
- Security hardening (PII/secret scanner), critical conflict-detection fixes
- CLI, dashboard, Neovim & Slack plugins
- Architecture docs and SOC 2 compliance
💡 Real collaboration in a scalable, production codebase — validated by an outside team, not a solo repo.
🇧🇷 Plataforma de consistência de memória multi-agente. Top Contributor com 90+ PRs aprovados, 130+ commits, hardening de segurança, correções críticas no motor de conflitos, CLI, dashboard e plugins.
🔗 https://github.com/Agentscreator/engram-memory | https://www.engram-memory.com/
🔹 Messengers of Hope (Mensageiros da Esperança) 🚀 Web system for NGO management — course registration, 100+ volunteers, digital attendance and real-time dashboard (Firebase).
💡 End-to-end delivery for a real client: discovery, build, and handoff — with a testimonial from the institution.
🇧🇷 Sistema web de gestão para ONG — inscrição em cursos, 100+ voluntários, chamada digital e dashboard em tempo real (Firebase). Entrega completa para cliente real, do levantamento de requisitos à entrega.
🔗 https://github.com/ismaeldouglasdev/mensageiros-da-esperanca | https://mensageiros-da-esperanca.vercel.app/
🔹 Elshaday — Omnichannel Retail Integration 🚀 Event-driven system connecting a physical POS (OSPOS/MySQL) with WooCommerce, Shopee, and Mercado Livre — inventory sync, CDC agent, Saga pattern, and marketplace plugin adapters.
💡 Commercial project for a real retail business. Code is private, but the architecture (event-driven inventory service + omnichannel sync) is available to discuss in a call.
🇧🇷 Sistema de integração omnichannel para varejo — conecta PDV físico (OSPOS/MySQL) com WooCommerce, Shopee e Mercado Livre via serviço de inventário orientado a eventos, CDC e padrão Saga. Projeto comercial para cliente real (código privado, arquitetura disponível para discussão).
🔹 provider-health-daemon 🚀 Real-time, error-aware routing daemon for AI providers — cooldown management, exponential backoff, and prompt-limiting integration for a self-hosted multi-provider gateway (9router).
💡 Infrastructure for agentic systems: keeps LLM routing resilient when providers fail or throttle.
🇧🇷 Daemon de roteamento com consciência de erros em tempo real para provedores de IA — gerenciamento de cooldown, backoff exponencial e integração de limitação de prompts para um gateway multi-provedor self-hosted.
🔗 https://github.com/ismaeldouglasdev/provider-health-daemon
🔹 amd-hybrid-router 🏆 AMD Hackathon Act II (Track 1) — hybrid token-efficient routing agent that selects the cheapest Fireworks AI model sufficient for each task.
💡 Built under hackathon time constraints — cost-aware model routing for agentic pipelines.
🇧🇷 Projeto do AMD Hackathon Act II — agente de roteamento híbrido, otimizado por token, que seleciona o modelo mais barato da Fireworks AI suficiente para cada tarefa.
🔗 https://github.com/ismaeldouglasdev/amd-hybrid-router
🔹 plexo 🚀 Centralized task manager with a Web UI (React), a Terminal UI (Textual), and a REST API — fully local, plain JSON storage, no external dependencies.
💡 Same domain logic exposed through three different interfaces — API design and multi-frontend architecture in one project.
🇧🇷 Gerenciador de tarefas centralizado com interface Web (React), interface de terminal (Textual) e API REST — totalmente local, armazenamento em JSON puro.
🔗 https://github.com/ismaeldouglasdev/plexo
🔹 PeakVault 🚀 Generic JSON management & analysis system with a modern GUI (CustomTkinter) for tracking and visualizing personal data (animes, movies, or games). 💡 Dynamic CRUD that adapts to any flat JSON structure, handles 10k+ record imports, data grouping, and visual charts.
🇧🇷 Sistema genérico de gerenciamento e análise de JSON com interface moderna (CustomTkinter). CRUD dinâmico que se adapta a qualquer estrutura JSON plana, suporta importação de 10k+ registros, agrupamento de dados e geração de gráficos.
🔗 https://github.com/ismaeldouglasdev/PeakVault
