Case studies

Projects

Internal systems, APIs, automation, customer service, infrastructure and operations.

Each case study covers its context, problem, role, stack, delivered work and observed outcomes.

Contact

Some projects were built for real-world operations, and their repositories remain private to protect business data and rules.

ERP dashboard with sales, cash flow, collections and inventory indicators.

Internal system & ERP

ERP integrating in-store sales and Moai Semijoias e-commerce

ERP connected to Nuvemshop to synchronize online and in-store sales, keep store inventory reliable, and organize customers, orders and internal management.

RoleArchitecture, backend, frontend, database, Nuvemshop integration, automation and deployment
OutcomeIn-store and online sales synchronized with reliable inventory in Nuvemshop.
  • FastAPI
  • Vue 3
  • PostgreSQL
  • Nuvemshop
View case study
Customer-service widget open inside the online store with a form to start a conversation.

Applied AI & Customer service

AI e-commerce chatbot with catalog search and lead capture

Embedded e-commerce assistant with Nuvemshop product, price, variant and availability queries, configurable AI and conversation history.

RoleBackend, widget, AI, catalog, leads, admin dashboard and integrations
OutcomeOn-site service with catalog queries, conversation history and handoff to a human channel.
  • FastAPI
  • JavaScript
  • PostgreSQL
  • Redis
View case study

Self-hosted architecture

  1. Windows + Hyper-V
  2. Ubuntu + Docker + Coolify
  3. Cloudflare Tunnel
  4. Veeam + drives + OneDrive

Infrastructure & Operations

Self-hosted infrastructure for deployment and operational continuity

Self-hosted environment for projects using Hyper-V, Ubuntu, Docker, Coolify and secure publishing through Cloudflare Tunnel.

RoleHyper-V, Ubuntu VM, Docker, Coolify, Cloudflare Tunnel and backup strategy
OutcomeProjects hosted and published in a self-managed environment, with continuity in its final implementation stage.
  • Hyper-V
  • Windows
  • Ubuntu
  • Docker
View case study

Monthly platform cost

Up to 99%Estimated reduction with a self-hosted solution.

Customer service & Infrastructure

Self-hosted WhatsApp service center for an accounting operation

Chatwoot and WhatsApp service center deployed on existing client infrastructure to replace a high-cost monthly platform.

RoleDeployment, WhatsApp integration, departments, priorities, tags and triage
OutcomeService maintained with an estimated reduction of up to 99% in the platform’s monthly cost.
  • Chatwoot
  • Evolution API
  • Baileys
  • Docker
View case study

Internal communication

Open sourceSelf-hosted alternative to Slack on the client server.

Internal communication & Infrastructure

Self-hosted internal communication with Rocket.Chat replacing Slack

Rocket.Chat deployed on the client server to replace Slack with an open-source solution and minimal recurring cost.

RoleDeployment, functional transition, channels, users, backups and publishing
OutcomeInternal communication maintained with recurring cost virtually eliminated.
  • Rocket.Chat
  • Docker
  • Cloudflare Tunnel
  • Backup
View case study