StackPost API unificada de redes sociais multi-tenant com 19 integrações, 114 endpoints REST, OAuth centralizado, agendamento, analytics e comentários.
19+ Plataformas
114 Endpoints
3 SDKs
We turn ideas into digital products that reach the market.
From strategy and architecture to development, deploy and evolution. We build software designed to work in the real world.
We do not just deliver code. We deliver products ready to be used.
Open for new projects · Reply within 24h
StackPost 
Nexus IA Plataforma de IA com 620+ endpoints REST, Nexus Auto com roteamento automático entre 20+ modelos, workspace com agente autônomo, multimodal e 6 planos comerciais.
620+ Endpoints REST
20+ Modelos de IA
6 Planos comerciais
Talk Agentes de IA para WhatsApp Business: multi-tenant, API oficial da Meta, kill switch por tenant, inbox unificada, handoff humano e knowledge por empresa.
4 Planos comerciais
6 Passos de onboarding
100% Tenant isolado
VulnStrike Scanner de vulnerabilidades SaaS: digite um domínio e receba nota de segurança A+–F com achados explicados e correção passo a passo — scan grátis sem cadastro.
50+ Verificações por scan
~30 Tempo do scan grátis
0 Dependências de servidor
Marken Fassi LXP privada para vendedores de enxovais onde o lojista entra, faz microlearning e usa o FASSI.AI para vender com confiança.
28% Vendas (piloto)
67% Engajamento (piloto)
42% Churn (piloto)
Medellin RP Loja VIP do servidor Medellin RP onde o jogador escolhe itens, paga via Mercado Pago e recebe tudo automaticamente no jogo.
70+ Páginas
344 Produtos
12 Tiers VIP
CellMax Distribuidora E-commerce B2B de acessórios para celular com ERP completo: 347 produtos, checkout, rastreio, estoque multi-armazém, compras, financeiro e expedição.
347 Produtos
370 Páginas
17 Módulos ERP
CasaMais Programa de parceiros para loja de materiais de construção. Arquitetos indicam clientes, acumulam comissões por tier e resgatam pontos CasaMilhas em catálogo de prêmios.
3 Perfis
9 Telas
2 Idiomas
NutriX Plataforma de saúde adaptativa em produção: nutrição calculada, treino ao vivo, coach de IA, análise por foto e portal de profissionais.
35+ Rotas
32 Migrations
8 Módulos
VendaMais Hipermercado digital B2C: 280+ produtos, 12 categorias, 90+ subcategorias, ofertas do dia, fidelidade e checkout simulado.
280+ Produtos
90+ Performance
95% Acessibilidade
SEEDS Experience Comunidade exclusiva de mulheres empreendedoras onde a membro entra, conecta-se e acessa oportunidades de capital e mentoria via IA.
51 Rotas
40 Tabelas
40 Tabelas RLS
Sanatto Facilities Site institucional para empresa de facilities. Síndico ou gestor encontra serviços, cases e solicita proposta em minutos.
15 Páginas
98/100 Lighthouse
4s Build
TradeMax Terminal Terminal de trading estilo WebTerminal: gráfico de velas ao vivo, book de instrumentos, painel de ordem com spread e posições — dados 100% simulados no client.
8 Instrumentos
11 Timeframes
0 Dependências de servidor
SolMais Demonstração de energia solar. Proprietário simula economia, compara planos e entende o retorno antes de contratar.
90+ Performance
95% Acessibilidade
4.6:1 Contraste
Frotamais Produto de gestão de frotas ao vivo. Gestor vê veículos, rotas, manutenção e alertas no mapa.
8 Veículos
6 Viagens
60% Redução (estimado)
Faturamais Demonstração de faturamento SaaS. Dono de e-commerce visualiza vendas, clientes e estoque em um dashboard sem depender de planilhas.
60% Fechamento (estimado)
4% Conversão
95+ Performance
VivaMais Plataforma demonstrativa para clinicas: 37 paginas, agendamento em 5 etapas, portal do paciente, painel admin e busca inteligente.
30 Paginas publicas
6 Especialidades
6 Profissionais
GordaoMod Loja digital de recursos premium para FiveM. Dono de servidor encontra 216 recursos em 10 categorias e baixa o que precisa.
216 Recursos
10 Categorias
5 Páginas
Product Real product
Architecture Professional architecture
Production Production
Private Protected code
Evolution Continuous evolution
What is holding your product back
You have the idea. We build the product that puts that idea in your customer's hands.
ExpoStacker turns ideas into working products. Not a site that lives on localhost. A product that is live, accessible and testable.
You have the idea, but no one to execute
The product vision exists, but you need someone to take it from concept to deploy — with your domain and your code, without relying on a freelancer who disappears.
Your site exists, but generates no business
You have an online presence, but visitors do not become customers. Missing UX, performance, conversion flow and a product that delivers real value.
You hired a dev and got code, not a product
You received something that works on localhost, but does not convert, scale or go to production. You need a product, not a ZIP folder.
Services
What we build
Timeline and deliverables set. No hourly billing, no open scope, no surprises. Every service has a clear start, middle and end.
The product is yours. Code, domain and infrastructure under your control when applicable. No lock-in.
Websites & Landing Pages
Performance, SEO, accessibility and conversion. Ideal to validate or launch.
Investment defined in proposal 1–2 weeks
- Exclusive mobile-first design
- SEO and optimized performance
- WCAG AA accessibility (target)
- Schema.org and Open Graph
- Form with validation
MVP in Production
Functional product with auth, 1–3 core flows and production deploy. To validate before investing big.
Investment defined in proposal 1–3 weeks
- Auth (email + social)
- 1–3 core product flows
- Database
- Production deploy
- Responsive design
E-commerce
Catalog, cart, checkout, real payment and order panel. Real sales.
Investment defined in proposal 3–6 weeks
- Catalog with filters and search
- Persistent cart
- Optimized checkout (3 steps)
- PIX, card and boleto via Mercado Pago
- Order dashboard
AI & Automation
Chatbot, AI assistant, RAG pipeline or process automation with LLM. AI that works.
Investment defined in proposal 2–4 weeks
- Chatbot with business context
- RAG pipeline with your documents
- OpenAI / Anthropic integration
- Prompt design and cost control
- Chat interface
WhatsApp Bots & AI
AI agent on the official Meta API that knows your catalog, respects your rules and hands off to a human when needed.
Investment defined in proposal 2–4 weeks
- AI agent with real catalog
- Official Meta API (no ban risk)
- Human handoff with summary
- Unified inbox + lead score
- Knowledge/RAG of your company
Evolution & Retainer
Continuous support, new features, fixes, monitoring and product evolution.
Investment defined in proposal Monthly
- Fixes and new features
- Performance monitoring
- Dependency updates
- Backup and security
- Response within 24h
Projects
Projects we put into practice
stackpost.expostacker.com.br
StackPost
API unificada de redes sociais multi-tenant com 19 integrações, 114 endpoints REST, OAuth centralizado, agendamento, analytics e comentários.
19+ Plataformas
114 Endpoints
3 SDKs
nexusia.expostacker.com.br
Nexus IA
Plataforma de IA com 620+ endpoints REST, Nexus Auto com roteamento automático entre 20+ modelos, workspace com agente autônomo, multimodal e 6 planos comerciais.
620+ Endpoints REST
20+ Modelos de IA
6 Planos comerciais
talk.expostacker.com.br
Talk
Agentes de IA para WhatsApp Business: multi-tenant, API oficial da Meta, kill switch por tenant, inbox unificada, handoff humano e knowledge por empresa.
4 Planos comerciais
6 Passos de onboarding
100% Tenant isolado
vulnstrike.expostacker.com.br
VulnStrike
Scanner de vulnerabilidades SaaS: digite um domínio e receba nota de segurança A+–F com achados explicados e correção passo a passo — scan grátis sem cadastro.
50+ Verificações por scan
~30s Tempo do scan grátis
0 Dependências de servidor
marken.expostacker.com.br
Marken Fassi
LXP privada para vendedores de enxovais onde o lojista entra, faz microlearning e usa o FASSI.AI para vender com confiança.
28% Vendas (piloto)
67% Engajamento (piloto)
42% Churn (piloto)
medellin.expostacker.com.br
Medellin RP
Loja VIP do servidor Medellin RP onde o jogador escolhe itens, paga via Mercado Pago e recebe tudo automaticamente no jogo.
70+ Páginas
344 Produtos
12 Tiers VIP
cellmax.expostacker.com.br
CellMax Distribuidora
E-commerce B2B de acessórios para celular com ERP completo: 347 produtos, checkout, rastreio, estoque multi-armazém, compras, financeiro e expedição.
347 Produtos
370 Páginas
17 Módulos ERP
casamais.expostacker.com.br
CasaMais
Programa de parceiros para loja de materiais de construção. Arquitetos indicam clientes, acumulam comissões por tier e resgatam pontos CasaMilhas em catálogo de prêmios.
3 Perfis
9 Telas
2 Idiomas
nutrixfit.expostacker.com.br
NutriX
Plataforma de saúde adaptativa em produção: nutrição calculada, treino ao vivo, coach de IA, análise por foto e portal de profissionais.
35+ Rotas
32 Migrations
8 Módulos
vendamais.expostacker.com.br
VendaMais
Hipermercado digital B2C: 280+ produtos, 12 categorias, 90+ subcategorias, ofertas do dia, fidelidade e checkout simulado.
280+ Produtos
90+ Performance
95% Acessibilidade
seeds.expostacker.com.br
SEEDS Experience
Comunidade exclusiva de mulheres empreendedoras onde a membro entra, conecta-se e acessa oportunidades de capital e mentoria via IA.
51 Rotas
40 Tabelas
40 Tabelas RLS
sanatto.expostacker.com.br
Sanatto Facilities
Site institucional para empresa de facilities. Síndico ou gestor encontra serviços, cases e solicita proposta em minutos.
15 Páginas
98/100 Lighthouse
4s Build
trademax.expostacker.com.br
TradeMax Terminal
Terminal de trading estilo WebTerminal: gráfico de velas ao vivo, book de instrumentos, painel de ordem com spread e posições — dados 100% simulados no client.
8 Instrumentos
11 Timeframes
0 Dependências de servidor
solmais.expostacker.com.br
SolMais
Demonstração de energia solar. Proprietário simula economia, compara planos e entende o retorno antes de contratar.
90+ Performance
95% Acessibilidade
4.6:1 Contraste
frotamais.expostacker.com.br
Frotamais
Produto de gestão de frotas ao vivo. Gestor vê veículos, rotas, manutenção e alertas no mapa.
8 Veículos
6 Viagens
60% Redução (estimado)
faturamais.expostacker.com.br
Faturamais
Demonstração de faturamento SaaS. Dono de e-commerce visualiza vendas, clientes e estoque em um dashboard sem depender de planilhas.
60% Fechamento (estimado)
4% Conversão
95+ Performance
vivamais.expostacker.com.br
VivaMais
Plataforma demonstrativa para clinicas: 37 paginas, agendamento em 5 etapas, portal do paciente, painel admin e busca inteligente.
30 Paginas publicas
6 Especialidades
6 Profissionais
gordaomod.expostacker.com.br
GordaoMod
Loja digital de recursos premium para FiveM. Dono de servidor encontra 216 recursos em 10 categorias e baixa o que precisa.
216 Recursos
10 Categorias
5 Páginas
ExpoStacker Build Method
How your product goes from zero to live
First call
Discovery
Understanding the business, users and goals. We map the smallest viable version of the product. No proposal before understanding the real context.
VivaMais 1-hour briefing
Up to 48h
Strategy
Scope, architecture, priorities and plan. Fixed price, no hourly billing. You know exactly what you will receive and how much it costs.
Frotamais Fixed scope in 48h
weeks to months
Build
Development with tracking and incremental deliveries. Live demos. You follow the project evolution in real time.
StackPost Multi-tenant SaaS
Live
Deploy
Product published, configured and ready to use. Domain, SSL, CI/CD and handoff. You do not receive a ZIP folder — you receive a working product.
Nexus IA production deploy
Ongoing
Evolution
Improvements and new features as the product grows. Optional retainer for continuous evolution without hiring an internal team.
Evolution ongoing
Why ExpoStacker
Why ExpoStacker?
We build digital products with engineering, product vision and a clear process.
Product, not just code
The goal is to put working software in the hands of users. We do not deliver code — we deliver products ready to be used.
Transparency
The client follows the project evolution. Incremental deliveries, live demos and direct communication. No unnecessary layers.
Architecture prepared for evolution
We build thinking beyond the first version. The product is born ready to receive new features without rework.
No artificial dependency
When applicable, domain, code, infrastructure and accounts remain under the client control. No lock-in.
Direct communication
Objective process, no account manager in between. You talk directly to the builder. Fast decisions, no noise.
Engineering + product vision
We do not just implement features. We think about how the product will be used, how it scales and how it generates value.
Who is behind it
Digital product studio that goes to production.
ExpoStacker was born to transform ideas and business needs into functional digital products. We do not sell code. We deliver live products, from first click to deploy, with your domain and your code. If it does not make sense to build, we say so before you spend money. If it is viable, we deliver. You do not receive a ZIP folder. You receive a working product.
What we build
SaaS & Platforms
Complete digital products with authentication, database, APIs, dashboards, payments and infrastructure.
E-commerce
Complete digital stores, checkout, catalog, payments and integrations.
Websites & Landing Pages
Fast, responsive and conversion-oriented digital experiences.
AI & Automation
Agents, copilots, automations, integrations and intelligent flows.
MVP in Production
We transform a validatable idea into a functional product ready for first users.
Evolution & Retainer
Continuous development, maintenance and evolution of existing products.
Systems
Internal platforms, management, dashboards and tailored operational tools.
Infrastructure & Deploy
Architecture prepared for operational efficiency. CI/CD, custom domain and SSL.
Product Real product
Production Professional architecture
No lock-in Zero lock-in
Evolution Continuous evolution
Technology that serves the product
Next.js React Python PostgreSQL Cloudflare IA
Frontend
- Next.js
- React
- Astro
- Vite
- TypeScript
- Tailwind CSS
Backend
- FastAPI
- Python
- Hono
- Node.js
- Express
- PostgreSQL
- SQLite
- Supabase
- Redis
- D1
Auth & Data
- Better Auth
- JWT
- bcrypt
- RLS
- Row Level Security
Payments
- Mercado Pago
- Stripe
Infra
- Cloudflare Workers
- Cloudflare Pages
- R2
- D1
- GitHub Actions
- Docker
- DevContainers
AI
- Groq
- Gemini
- Cerebras
- Claude
- Whisper
- RAG
- LSP
- Stable Diffusion
Who builds
Felipe — Founder & Product Engineer
Open for new projects · Brazil · Abroad · RemoteFelipe — Founder & Product Engineer. ExpoStacker was born to transform ideas and business needs into functional digital products. We do not sell code — we deliver live products. Every project goes from concept to deploy with domain, code and infrastructure in the client name when applicable. No lock-in, no technical dependency, no ZIP folder.
Specialized in SaaS, platforms, e-commerce and AI. Infrastructure optimized for operational efficiency. Talk directly to the builder, not an account manager.
See what we built
Products live. Not slides, not demos.
Real, accessible and testable products. Demo and client code stays private by default - commercial protection with technical audit on demand.
Real product
Functional projects, not just visual concepts. Live, accessible applications with custom domain.
Explore projectsPrivate, protected code
All code is private by default - demos and clients. Technical audit on demand over a call, without exposing your business or ours.
Ask about accessTechnology that serves the product
We choose technology based on the problem, product requirements and production scenario — not to follow trends. Infrastructure optimized for operational efficiency.
Next.js · React · Astro · Hono · Supabase · PostgreSQL · Cloudflare Workers · Mercado Pago · IAFree download
Checklist: 10 questions before building your digital product
Most products fail before the first commit. This checklist helps you validate the idea, market and timing before investing in the build.
No spam. You get the link within 24h.
Frequently asked questions
What you need to know before reaching out
How much does it cost?
Projects start from a minimum investment and scale with scope. In our first call I understand what you need and send a fixed proposal within 48 hours — no hourly billing, no surprises. You pay for the product, not for the hours.
How long does it take?
Landing page: 1-2 weeks. E-commerce: 3-6 weeks. SaaS with auth, database and dashboard: 6-12 weeks. Exact timeline and fixed price are defined in the proposal.
Do you work remotely?
Yes. I work with clients in Brazil and abroad. Communication via WhatsApp and video calls. Weekly deliveries so you can track progress.
Do I own the code?
Yes. All code goes to your GitHub. You own everything. No technical dependency, no lock-in. The product is yours.
Is the site under my name?
Yes. Domain, DNS, GitHub and Cloudflare are yours. You have full control. I do not stay in the middle.
Is there maintenance after deploy?
Yes. Bug fixes in the first 30 days at no cost. After that, optional retainer for evolution and new features.
How does payment work?
Fixed price per scope, defined in the proposal. No hourly billing. Upfront to start and installments per project milestones.
Do you sign an NDA?
Yes. NDA available when the project requires it. Clients with sensitive data or protected intellectual property get formal confidentiality.
Do you take over a project that started with another developer?
Yes. I evaluate the existing code, map what works and what needs refactoring, and continue. In the first call I give an honest diagnosis of the project state.
Can you take over an existing system?
Yes. I analyze the architecture, identify technical debt and propose an evolution plan. If the system is not viable, I say so — I do not take projects that will not work.
Can I hire only part of the project?
Yes. I can work on a specific part — auth, API, checkout, deploy — without redoing everything. Partial scope with fixed price.
Do you maintain existing systems?
Yes. Fixes, updates, new features and monitoring of systems already live. Optional monthly retainer, no lock-in.
Do you work with companies outside Brazil?
Yes. I serve Brazil and abroad. Communication in Portuguese or English. Payment via PIX (Brazil) or international transfer.
Who is responsible for infrastructure?
You. Domain, Cloudflare, GitHub and Supabase are in your name. I set up everything and document it — you have full control. Infrastructure optimized for operational efficiency.
Do you do design?
Yes. Responsive, mobile-first and accessible design (WCAG AA target). I am not an exclusive designer, but I deliver functional and professional UI. For complex branding projects, I work with a partner designer.
Can I start with an MVP and evolve later?
Yes and recommended. Start with the MVP in production, validate with users and evolve as traction grows. It is not a prototype — it is a product that runs, that the user uses and that can pay.