ProductionPrivate source code
Business Management and Automation
CRM by Fatek
A multi-tenant SaaS product for CRM, ERP, finance, inventory, customer communication, e-commerce operations and automation.
Next.jsNestJSTypeScriptPostgreSQLPrismaAWS
Brazil-based · Remote international work
I build the product, the system and the parts behind it.
Full-stack product engineer working across SaaS, CRM, e-commerce, fitness and real estate products. I move from product thinking to interface, backend, data, integrations and launch.
- Proof point
- 5+ real products shipped
- Proof point
- 2 SaaS products live
- Proof point
- Product to infrastructure
Product mapLive systems
Product
Discovery
Workflows
Business rules
Frontend
Interfaces
Dashboards
Forms
Backend
APIs
Jobs
Webhooks
Data
PostgreSQL
Prisma
Reporting
Integration layer
AI APIsWhatsAppPaymentsShippingEmailCloud
End-to-end ownership
Product thinking, UX, data, APIs and the launch path.
Selected work
Software built close to the operation.
Four products across CRM, gyms, real estate and loyalty, each shaped around how the business actually runs.
Production / BetaPrivate source code
Gym Operations ERP
Revello
A vertical SaaS product for gym operations, billing, retention, churn risk, check-ins, WhatsApp communication and assisted operational agents.
Next.jsNestJSTypeScriptPostgreSQLPrismaVitest
Production / BetaPrivate source code
Portfolio Operations for Real Estate Agencies
Imob Agents
A vertical SaaS product that uses WhatsApp conversations to update property portfolios, structure owner replies and create prioritized tasks for agents.
Next.jsTypeScriptPostgreSQLPrismaOpenAIWhatsApp API
ProductionPrivate source code
Loyalty Ecosystem for the Fitness Industry
Strong Body Rewards
A gamified loyalty platform connecting a supplement brand, partner gyms and end customers through purchases, validations, levels, rewards and partner-specific operational dashboards.
ReactTypeScriptTanStackSupabaseCloudflareVitest
Engineering scope
A broader engineering range.
I can work on the interface, the domain model, the API, the data layer and the launch path without losing product context.
Product Engineering
Taking an unclear business problem and turning it into product behavior people can actually use.
Frontend
Responsive interfaces, dashboards, forms and product surfaces with clear states and readable hierarchy.
Backend
REST APIs, authentication, authorization, background jobs, webhooks and business rules.
Data
Relational modeling, PostgreSQL, Prisma, migrations, data integrity and reporting that managers can trust.
Infrastructure and Integrations
Deployment, Nginx, SSL, monitoring, payments, shipping, WhatsApp and AI APIs.
Core stack
A focused set of tools, used end to end.
The stack stays compact on purpose: enough range to own the product from interface to infrastructure, without turning every project into a tooling experiment.
Languages
TypeScriptJavaScriptSQL
Frontend
ReactNext.jsTailwind CSSTanStack
Backend
Node.jsNestJSREST APIsWebSockets
Data
PostgreSQLPrismaSupabaseNeon
Infrastructure
AWS EC2NginxCloudflareGitHub Actions
Integrations
OpenAIWhatsApp Cloud APIStripeMelhor EnvioResend
Quality
VitestJestESLintTypeScriptSentry
Product mindset
I care about what happens after the feature ships.
My background in marketing, support and business operations helps me read the room before opening the editor: how people sell, where handoffs break, what managers need to see and what a user will actually tolerate every day.
I do not treat software as a pretty screen in isolation. The value is in the whole loop: the interface, the rules, the data, the integrations, the failure states and the next version.
Experience
A path through software, support and business work.
Fatek Solutions
Founder & Full-Stack Product Engineer
Building SaaS products and internal systems for teams that need their sales, finance, communication and automation work in one place.
Self-employed
Computer Support and Maintenance Technician
Handled computer support, maintenance and troubleshooting for people and small businesses that needed practical help, not jargon.
Grupo Pegasus
Marketing Assistant
Worked close to the sales floor, supporting campaigns, social media and day-to-day marketing execution for an automotive group.
Current focus
Looking for someone who can own more than a ticket?
I am open to remote international roles where product judgment, full-stack execution and clear communication matter.