You show up before the competition
I structure your page so Google understands exactly what you offer and to whom — with technical SEO, schema.org and semantic architecture from day one.
Luiz Siewerdt
Software Engineering focused on architecture, performance and scalability.
I build robust platforms, scalable APIs and refined interfaces — with the rigor of shipping to production.
About
I’m a full-stack engineer with strong expertise in backend architecture, multi-tenant SaaS systems and deployment infrastructure. I operate end-to-end — from domain modeling and database optimization to frontend refinement and infrastructure control.
My approach prioritizes scalability, modular architecture and performance from the system’s foundation.
Tech Stack
Backend
Ruby on Rails (API-only)PostgreSQLRedisSidekiqWebSockets (ActionCable)JSONB ModelingBackground ProcessingDomain-Driven Modeling
Frontend
Vue.jsQuasar FrameworkNext.jsReactTailwindCSSResponsive UI ArchitectureDesign System Thinking
Infrastructure & DevOps
DockerDocker ComposeCapRoverVercelCloudflareNginxLinux EnvironmentsSelf-Hosted DeploymentsDNS & Networking
Performance Engineering
Query OptimizationCaching StrategiesAsset OptimizationReal-Time Data StreamingImage OptimizationHigh-Traffic Readiness
Landing Pages
A page that works for you — bringing clients from Google and converting those who land from ads.
I build fast, well-ranked landing pages designed to turn visitors into real contacts. The tech behind it is Next.js, but what you see is results.
Visitors become leads
Every section is designed to drive the next step: WhatsApp, form or call. I study your market, your area and what your customers search before writing a single line.
Loads fast, even on mobile data
Optimized images, lean code and global delivery. Your customer won’t wait — and Google rewards fast pages with better rankings.
Built to grow after launch
Not a disposable template. It’s a solid foundation with analytics, conversion tracking and a structure that evolves with your business.
Projects
01
Multi-Tenant SaaS Platform
Scalable system supporting multiple branded instances with isolated configuration layers and centralized core architecture.
Architecture Tenant isolation with dynamic configuration
Challenge Ensuring data isolation between tenants while maintaining a centralized codebase
Ruby on RailsPostgreSQLRedisDocker
02
Real-Time Booking Platform
Scheduling system using WebSockets for live availability updates and conflict prevention.
Architecture Bidirectional streaming with ActionCable
Challenge Real-time state synchronization across multiple clients
RailsActionCablePostgreSQLVue.js
03
White-Label Platform Infrastructure
Deployment-ready architecture enabling rapid launch of multiple branded web platforms.
Architecture Automated per-tenant deployment pipeline
Challenge Full branding customization without code duplication
DockerCapRoverNginxCloudflare
04
High-Performance API Backend
API-only backend with asynchronous job processing, optimized PostgreSQL modeling and scalable service design.
Architecture Service layer with async jobs and distributed caching
Challenge Maintaining low latency under heavy load with background processing
Ruby on RailsSidekiqRedisPostgreSQL
Engineering Approach
Modular Architecture
Decoupled components with well-defined responsibilities, enabling scale and maintainability.
Domain-Driven Modeling
Data structures that reflect the business domain, ensuring clarity and consistency.
Scalability from the Start
Architectural decisions made with long-term vision, not as an afterthought.
Infrastructure as Engineering
Deployment, monitoring and configuration treated with the same rigor as application code.
Performance as a Requirement
Query optimization, caching and asset management integrated into the development process.
Technical-Business Alignment
Technical decisions driven by product goals and real-world impact.
Technical Strengths
Full ownership of backend, frontend and infrastructure
Multi-tenant SaaS experience
Self-hosted and hybrid cloud deployments
Advanced performance optimization
Scalable modular architecture
Strong product-aligned engineering mindset
Contact
Have a project in mind? Tell me about it — I reply fast.