Landing pages & websites
Fast, search-ready sites that explain what you do and turn visits into conversations — designed, written and measured.
Avasteradev — Software studio
Software that carries your business.
Avasteradev designs and builds software end to end — from a landing page that turns visits into clients to platforms with dozens of integrations, apps and AI working inside real operations.
- 400+
- daily users on a platform built by our founder
- 98%
- lower cost per seat than the off-the-shelf tool it replaced
- 3
- operating systems served from one codebase
01
Services
From a first page
to a full platform.
One team for the whole range: the site that introduces your business, the systems that run it and the integrations that hold everything together.
Web platforms & SaaS
Internal systems and customer-facing products: dashboards, permissions, reporting and the business rules behind them.
Integrations
We connect the systems you already use — ERPs, payments, marketplaces, CRMs — including platforms that offer no public API.
Desktop & mobile apps
Cross-platform applications for Windows, macOS, Linux, Android and iOS, built from a single codebase.
AI integration
Language models and agents connected to your real data and operations, with the same permissions and audit trail as your team.
Architecture & scaling
Audits, modernization of legacy systems and capacity planning, so software keeps up with the business instead of holding it back.
02
Work
Work that carries
real weight.
Software that companies depend on every day — built under real load, with integrations nobody had documented.
-
The core platform of an operation
A multi-platform system designed and built, largely by our founder alone, that became the center of a company. Its revenue flows through it: the platform integrates third-party websites that expose no official integration, and carries the daily work of more than 400 people.
- 400+
- daily active users
- 98%
- lower cost per seat than the tool it replaced
- 3
- desktop operating systems, one codebase
- Lead
- from sole engineer to leading the team
Simplified view. Every arrow is a contract I designed or reverse engineered. Reverse engineering
Mapped undocumented platforms — request signing, session tokens, fingerprint invariants, WebSocket traffic — and rebuilt them as dependable integrations.
Cross-platform desktop client
An Avalonia application for Windows, macOS and Linux with embedded Chromium, isolated persistent sessions per account and a companion browser extension.
Web platform & API
ASP.NET Core and EF Core over SQL Server, JWT authentication, reporting, dashboards and server-driven permissions that reshape the interface without a release.
Real-time event pipeline
Webhooks verified with HMAC-SHA256, persisted before fan-out and delivered over SignalR to access-scoped groups, with idempotency designed per provider.
Zero-latency data capture
Passive network and WebSocket observers feed a durable local outbox; micro-batches reach the API idempotently without delaying the user's action.
AI integration
Platform capabilities exposed to AI agents through a Model Context Protocol server, turning internal operations into tools an assistant can call.
Scale & architecture
Vertical scaling first, then growth driven by real load. A module-by-module audit: 76 findings, a phased roadmap and a capacity plan from 100 to 100k users.
Team leadership
From sole engineer to leading the team — setting conventions, reviewing work and turning operational needs into a roadmap.
OutcomeThe operation now owns, end to end, the software it depends on. That experience — integrations nobody documented, architecture that had to hold under real load — is what Avasteradev brings to every project.
03
Process
How a project
moves forward.
The same four steps for a landing page or a platform — only the depth changes.
-
Step 01
Understand
We start with the problem, the people and the systems involved. Before proposing anything, we learn how things actually work today.
-
Step 02
Plan
A clear scope, the smallest version that delivers value and a roadmap for what comes next. No surprises in price or timeline.
-
Step 03
Build
Short cycles with working software you can see and use early. Every integration is tested against real data, not assumptions.
-
Step 04
Run & grow
Deployment, monitoring and support. As usage grows, the architecture grows with evidence, not speculation.
Mechanism before modification
We read the system — traffic, data, contracts — before we touch it. Guesswork is the most expensive dependency.
Grow it organically
Start lean, measure, and invest where the load actually is. Architecture that scales with evidence.
Own the outcome
From the first commit to the person on the other side of the screen. Shipping is the midpoint, not the finish.
04
Founder
Built from the
mechanism up.
Renato LealFounder & Software Engineer
Avasteradev was founded by Renato Leal, a software engineer based in Curitiba, Brazil, specialized in platform engineering, AI integrations and reverse engineering.
His path started with a tool he built for a racing game and went through migrating desktop software to the web, before he designed and built — largely on his own — the multi-platform system an entire operation now runs on, used by more than 400 people every day.
Before software, Renato studied electromechanics and mechatronics, where he learned to treat every system as a machine with inputs, tolerances and failure modes. That habit defines how Avasteradev works: understand the mechanism first, then change it.
- Founder
- Renato Leal
- Based in
- Curitiba, Brazil · Remote, worldwide
- Focus
- Platform engineering · AI integrations · Reverse engineering
- Education
- B.Sc. Computer Science · Technical degrees in Mechatronics and Electromechanics
-
Origin
Launch control for a racing game
A two-step limiter for Forza: from global hotkeys to per-car ignition-cut profiles read from live game state.
-
Foundation
From desktop to web
As an intern, took on the migration of an established desktop product to the web, working directly with its clients.
-
Scale
A platform an operation runs on
Designed and built a multi-platform system with reverse-engineered integrations, then grew into leading its team.
-
Today
Avasteradev
The same engineering, now open to companies of any size — from a first landing page to a platform with many integrations.
05
Stack
Tools we
ship with.
Languages, frameworks and infrastructure used in real projects — from managed runtimes down to assembly. Click any of them.
06
Contact
Tell us what you
need to build.
A landing page this month, or a platform that has to talk to ten other systems. Describe the problem and we will reply with a clear plan.