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.
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.
What you get
- A page structured to make clear what you do, why trust you and how to hire you
- Google ranking configured from delivery — technical and on-page SEO
- Speed optimized to score well on Google and not lose impatient visitors
- Images and branding ready for social sharing and WhatsApp
- Forms, contact buttons and tracking so you know where every lead comes from
- Responsive layout that works great on mobile, tablet and desktop
How it works
- 01
Initial conversation
I understand your business, market and goals. Free, 15 to 30 minutes by WhatsApp or video call.
- 02
Fixed-price proposal
Clear scope, timeline and deliverables. No hidden costs, no open-ended quotes.
- 03
Development and reviews
I build the page in 1 to 2 weeks. You follow along in a preview environment and request adjustments before launch.
- 04
Launch and tracking
Site live with analytics, technical SEO configured and Lighthouse 90+ from day one.
Investment
Pages from USD 120
Final price set after the initial conversation — varies by integrations.
Selected Work
Live sites bringing leads to local professionals
Landing pages delivered — all in production, ranking on Google and converting through WhatsApp.
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-Demand Rails Platform — Active Partnership
Ongoing engagement on a Ruby on Rails platform serving 2.5k requests per minute sustained, with server Apdex 0.99, ~80ms average response time and 0.12% error rate in production.
Architecture Service layer with distributed caching, APM observability and async processing
Challenge Holding Apdex near 1.0 and sub-100ms latency under 2.5k+ rpm sustained traffic
Ruby on RailsPostgreSQLRedisAPM
05
Multi-Threaded TCP Server in Ruby
TCP server written in pure Ruby, supporting multiple simultaneous connections through a thread pool and manual I/O management.
Architecture Thread pool over low-level TCP sockets
Challenge Implementing safe concurrency without external dependencies, ensuring throughput under parallel connections
RubyTCP SocketsThreadsMutex
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
Tech Stack
Ruby on RailsNext.jsReactVue.jsPostgreSQLRedisSidekiqTailwindCSSQuasarDockerCapRoverVercelCloudflareNginxWebSocketsJSONBTypeScriptLinux
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
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.
About
I started in 2020 as an electronics technician. In 2022 I fell in love with software development while programming microcontrollers in C — and since then I've worked as a full-stack engineer, moving from Junior to Mid-level, focused on backend architecture, multi-tenant SaaS systems and deployment infrastructure.
I work end-to-end — domain modeling, optimized databases, refined frontend and infrastructure under control. Sites delivered to production hold Performance 90+ and SEO 100 on Lighthouse.
Frequently Asked Questions
Before reaching out, you might want to know
How much does a Next.js landing page cost?
Every project is priced case by case based on scope, timeline and integrations (forms, booking, payments, analytics). After an initial chat by email or WhatsApp, I send a proposal with a fixed price.
How long does a project take?
A standard professional landing page is delivered in 1 to 2 weeks. Projects with specific integrations (CRM, booking, payments) can run up to 3 weeks. The schedule is defined in the proposal.
What technologies do you work with?
I build landing pages and applications using Next.js and React on the frontend, Ruby on Rails or Node.js on the backend, PostgreSQL, Redis and Docker. For more complex systems, I also work with multi-tenant SaaS, distributed architecture and performance engineering.
Do you work with clients outside Campo Mourão?
Yes — I work 100% remote, in both Portuguese and English, with clients across Brazil and internationally. Meetings via Google Meet or Zoom; communication through WhatsApp, Slack or email — whichever the client prefers.
How is your landing page different from a template or Wix?
Semantic structure and technical SEO from day one (schema.org, hreflang, Core Web Vitals), custom code with no platform lock-in, Lighthouse 90+ performance and architecture built to evolve. Not a disposable template — it's a solid foundation that you own.
Can I see examples of delivered sites?
Yes — every site in the "Selected Work" section is live and generating leads for local professionals (physiotherapy, dentistry, law). Each card is clickable and leads to the real site.
Contact
Have a project in mind? Share the context — I reply by email within 24 hours with a free initial assessment.