available for senior & staff roles · remote · 2026

Building scalable software
for high-concurrency,
distributed systems.

Senior Software Engineer specializing in architecture and development of scalable systems — end-to-end applications, complex integrations, distributed environments. 5+ years shipping SaaS products that run real businesses.

Portrait of Cleber Wacheski, Senior Software Engineer
320+
businesses in production
5
products shipped end-to-end
99.9%
target uptime
< 50ms
edge api p95

Production systems
running real businesses.

01 AXISERP

AXISERP

Brazilian ERP for end-to-end business management — sales, inventory, purchasing, fiscal documents, banking and finance — running as both web SaaS and Tauri desktop app with multi-tenant isolation.

ERP / SaaS web + desktop (tauri) 50+ companies in production v5.1.2
Next.js 15 React 19 TypeScript Tauri 2 / Rust Hono Drizzle Turso Stripe Nuvem Fiscal Sicredi DDD + 8
[ product shot ]
16:10
dashboard · sales / inventory
multi-tenant · 19 domain modules
02 AXISGYM

AXISGYM

Multi-tenant gym management SaaS with iOS & Android student app, biometric turnstile integration (ControlID, Henry8X), recurring billing, FCM push notifications and a granular RBAC layer with 30 permissions.

gym management / saas web + ios + android 70+ gyms in production 32 tables · 28 modules
Next.js 15 React Native Hono NextAuth v5 Turso Upstash Redis QStash Pusher Firebase FCM MaxiPago e-Rede + 6
[ product shot ]
16:10
access logs · enrollments
web dashboard + mobile (rn / expo)
03 AXISAGENDA

AXISAGENDA

Multi-tenant scheduling SaaS for salons, barbershops & aesthetic clinics. Public booking page per tenant, WhatsApp reminder pipeline via QStash, Stripe subscriptions, commission & promotion rules, 3-tier plan limits.

scheduling / saas vertical-slice architecture 200+ salons in production plan_3 · plan_8 · unlimited
Next.js 16 React 19 (compiler) NextAuth v5 Drizzle Turso Stripe QStash Supabase Realtime Resend Jotai Vitest
[ product shot ]
16:10
daily schedule view
public booking page · whatsapp pipeline
04 CRISTALAPP

CRISTALAPP

Mobile app for field sales reps managing product consignations and route sales — register customers, plan visit routes, record sales and consignations with full out / partial-sale / return cycle tracking. Backend on Vercel edge.

mobile / consignations ios + android field-sales workflow edge api
React Native Expo SDK 52 Expo Router Hono Vercel Edge Turso Drizzle Zustand React Query jose (JWT) expo-camera
[ product shot ]
16:10
mobile app · route sales
consignation cycle tracking
05 MARANATA

MARANATA

Multi-tenant POS system for restaurants and snack bars — order flow, inventory, customers, NFC-e fiscal emission, daily reports and analytics. DDD + Clean Architecture with 11 domain modules and value objects for currency, CPF/CNPJ.

pos / food service multi-tenant nfc-e fiscal pt-br
Next.js 15 React 19 (RSC) NextAuth v5 Turso / LibSQL Drizzle next-safe-action Zustand TanStack Query shadcn/ui NuvemFiscal Bun (test)
[ product shot ]
16:10
pos terminal · order flow
ddd · 11 domain modules

A senior engineer
with a builder's mindset.

Senior Software Engineer specializing in architecture and development of scalable systems, with solid experience working with both national and international companies. Over the last few years I've helped build robust end-to-end applications, handling high data volume, complex integrations and distributed environments.

Strong full-stack: frontend and backend with focus on performance, scalability and code quality. Worked on global projects collaborating with international teams across different business contexts — which sharpened my ability to adapt, communicate and deliver under high standards.

My main stack is React, Next.js, Node.js, TypeScript and Go, plus experience with serverless architectures, microservices and cloud infrastructure (AWS). Result-oriented, owner mindset, and a constant focus on technical evolution. Currently learning Rust.

Tools I reach
for in production.

languages
  • TypeScript
  • Node.js
  • Go
  • Rust (learning)
  • SQL
  • Python
frontend
  • React 19
  • Next.js 15 / 16
  • React Native / Expo
  • Tailwind CSS 4
  • shadcn/ui · Radix
  • Tauri (desktop)
backend
  • Hono
  • Drizzle ORM
  • Turso / LibSQL
  • NextAuth v5 / JWT
  • next-safe-action
  • Zod
infra
  • AWS · serverless
  • Vercel · edge
  • Upstash Redis
  • QStash · queues
  • Firebase FCM
  • Stripe · MaxiPago
/contact

Got a system to build,
scale, or rescue?

Open to senior & staff roles, contracting and high-impact projects with international teams. Best way to reach me is email or LinkedIn — I usually respond within a day.