Brazil · Remote-friendly
PSYDEV — Full-stack product engineering.
TypeScript software house: React Native/Expo apps, React/Next/Vite web products, and NestJS backends — with unit tests, E2E, and CI on GitHub Actions. Real engineering, accelerated by top-tier AI day to day, and AI product integrations when your product needs them (MCP, conversational dashboards, automations). Hire the specialist, the PSYDEV squad, or PSYDEV as contract owner — scaling with the Inova network when scope demands it.
TypeScriptReact Native CLI & Expo (Bare & Managed)VitestNestJSNext.jsReactPrismaPostgreSQLRedisZustandReact Hook FormZod+14 in daily use
zsh — psydev
$ whoami
PSYDEV — full-stack product engineering.
$ stack --list
TypeScript · React Native CLI & Expo (Bare & Managed) · Vitest · NestJS · Next.js · React
$ status
✔ mobile · web · API · AI — tested in CI
WHAT WE DO
Services
React Native / Expo apps
CLI or bare workflow: architecture, New Architecture, performance, OTA, and store publishing — from zero to long-term maintenance.
Web with React, Next.js, and Vite
Web products, e-commerce, and dashboards with TypeScript, typed forms, and production UX — not just landing pages.
NestJS backend
Versioned APIs, JWT, Prisma/PostgreSQL, Redis, Bull queues, and integrations. Every backend ships with unit tests, E2E tests, and a GitHub Actions pipeline.
AI in the product and workflow
We integrate AI into your services: MCP, conversational dynamic dashboards, automations, and agents — plus top-market models to accelerate discovery and delivery, without dropping solid engineering.
Delivery and quality
CI/CD on GitHub Actions (unit + E2E in the pipeline), EAS, Vitest/Jest, Maestro on mobile, and observability with Sentry/Crashlytics — predictable releases.
AI
Top-tier AI — in service of engineering
We built software before the copilots era. AI accelerates what we already know how to do; it does not replace technical judgment, architecture, or ownership of production code.
IN THE PRODUCT
Beyond internal use, we integrate AI into client products: MCP servers, dynamic dashboards where users ask the AI for analyses, model-driven automations, assistants embedded in the flow, and APIs that orchestrate LLMs with security, cost, and observability under control.
DAY TO DAY
Day to day we use Cursor as IDE, with top-market models: Fable 5, Opus 5, Grok 4.5, and GPT 5.6 SOL. For simple tasks and tweaks AI handles well, Composer 2.5 Fast. Strong models for decisions and critical code; the fast one for what does not need overhead.
CursorFable 5Opus 5Grok 4.5Sonnet 5GPT 5.6 SOLComposer 2.5 FastMCP
HOW TO HIRE
Three ways to work with us
From an allocated specialist to a contract with factory capacity — pick the model that fits your product right now.
01
Individual contractor
Direct allocation of the specialist (full stack / mobile / backend) onto your team. Remote, with an engineering process: PRs, CI, quality, and clear communication. Ideal for reinforcing an existing squad.
02
PSYDEV squad
Contract with PSYDEV: founder + our developers acting as a product team. Discovery, build, ship, and support under the same technical direction — without you coordinating freelancers on your own.
03
PSYDEV + Inova network
PSYDEV owns the contract and scales with Inova e-Business when scope needs more people or other stacks (VTEX/Magento/Nuvemshop e-commerce, .NET, PHP, ERP integrations). One commercial point of contact, factory capacity.
HOW WE WORK
Process
STAGE 01
Discovery
We understand the product, the team, and technical constraints before writing the first line of code — using AI to explore options faster, without skipping engineering reasoning.
STAGE 02
Build
Focused sprints, small reviewed PRs. On backends: unit and E2E tests early, running on the GitHub Actions pipeline.
STAGE 03
Ship
Web deploy, build and publish via EAS, store checklist, and controlled rollout — only what passed CI goes out.
STAGE 04
Support
Monitoring with Sentry/Crashlytics and continuous evolution after launch.
PORTFOLIO
Projects
FEATURED
Créditos Vibe
Benefits club with missions, discounts, and giveaways — the app with the highest download volume in the portfolio. Brand partners include Nubank, Netshoes, Natura, and other major retailers. PSYDEV delivers the mobile product in React Native/Expo (bare), with web and admin portal in the Vertem/Inova ecosystem.
National-scale product, white-label for partners (e.g. Empresas variants), and continuous store operations.
React NativeExpoZustandZodFirebaseViteAxiosFlashListReanimatedSkiaReact QueryReact Navigation
GeraPix
Payment gateway for sending and receiving Pix via API — a third-party product developed and published by PSYDEV. Companies, fintechs, and marketplaces process transactions in real time — app and flows designed for financial automations.
App live in the stores (Google Play and App Store).
React NativeExpoWebViewFirebasePixAPI
Imigrantes Bebidas
App for the Imigrantes Bebidas retail chain — 27+ stores and 5,000+ SKUs across beers, wines, and spirits. Mobile shopping, orders, deliveries with notifications, and account management on Expo bare workflow.
Official chain app in production on Google Play and the App Store, with engagement (MoEngage/Firebase) and OTA.
React NativeExpoZustandZodFirebaseLiveActivitiesFCMPush NotificationsAxiosReanimatedLottieFlashListReact Navigation
Revista Oeste
App for one of Brazil's largest political magazines. Digital editions, articles, favorites, offline downloads, and live programming — media experience at scale on phone and tablet.
Free app in production in the stores, with push, ads, and offline reading for a national audience.
React NativeExpoZustandZodReact Hook FormOneSignalAdMobFirebaseAxiosReact QueryReact Navigation
Gooroo Crédito
App for fintech Gooroo — payroll loans, salary advance, and financial education (Gooroo Educa + simulator). The webview MVP validated the product in the stores; PSYDEV is leading the native rewrite (~28 screens), keeping webview only where it still makes sense.
Product live in the stores; webview → native migration in progress with a focus on stability and UX.
React NativeExpoZustandZodWebViewFirebaseReact Hook FormAxios
Glöfi Store
Unigloves e-commerce. PSYDEV worked on the migration from .NET to React/Next.js: catalog, product page, cart, and purchase experience — live at glofi.com.br.
Web store in production after front-end modernization.
ReactNext.jsE-commerceIonicAxiosReact Hook FormZodDropzoneReact NavigationFirebase
Clube do Ingresso — Produtor
B2B app for producers to manage events: real-time sales, reports by lot/channel/POS, finance (paid and receivables), and live check-in.
Event operations app live in the stores, alongside the Clube do Ingresso ecosystem.
React NativeExpoAxiosReact Hook FormZodReanimatedReact NavigationFirebase
Mybenk
White-label banking-as-a-service base (Celcoin) from which 12+ digital banks were customized (CF Bank, Olympia Bank, SKX Bank, among others). Digital account, Pix, boletos, payments, and PF/PJ onboarding. PSYDEV worked at Voluti and then at CSB (crieseubanco.com.br) for about two years on the product line.
+12 digital banks customized on the same white-label base.
React NativeCelcoinWhite LabelPIXTEDDOCBoletoAxiosWebViewReact Hook FormZodFirebaseFirebase App CheckSSLZustandReanimatedReact NavigationViteReact.jsNest.JSRedisTypeORMPostgreSQLAWS
WHO BUILDS
Team
VP
Vinicius Petrachin
Co-founder & Full Stack Engineer
Full stack in TypeScript: React Native/Expo (CLI and bare), React/Next/Vite, and NestJS (Prisma, Postgres, Redis, Bull) — with unit, E2E, and CI on GitHub Actions. Integrates AI into products (MCP, dashboards, automations) and uses top-tier models in the workflow, grounded in engineering built before copilots. Founder of PSYDEV; projects such as Vibe, Gooroo, Revista Oeste, Imigrantes, and white-label banking. Open to remote contractor engagements and PSYDEV squad work.
MP
Marcelo Pereira
Partner & Senior Mobile Developer
Senior mobile developer in React Native and TypeScript, with NestJS APIs and a security-minded approach to apps and backends. Partner at PSYDEV; works day to day with Inova and on product projects — components, navigation, and REST integrations. B.Sc. in Computer Science; fluent English (exchange program in Ireland).
DA
Daiane Amorim
QA Analyst
Quality Assurance analyst focused on mobile: E2E testing, test scripts, reports, creating cards and tasks, bug classification, and prioritization. At PSYDEV since 2024, she ensures quality across the team's app and product deliveries.
PARTNERSHIP
Extended capacity with Inova e-Business
Long-standing partnership with Inova e-Business — a software factory with 12+ years, 1,000+ delivered projects, and 50+ professionals (consultants, analysts, architects, and engineers). Typical scope: apps, e-commerce, integrations, custom systems, SEO/marketing, and outsourcing. Partner of VTEX, Microsoft, AWS, and Google; experience with Magento, Nuvemshop, and integrations (SAP, Totvs, Bling, TinyERP, marketplaces).
When the contract sits with PSYDEV and scope needs scale or stacks beyond our TypeScript core, we allocate the Inova network under the technical direction of Roberto Gentile (CTO and co-founder). PSYDEV has been the mobile/full-stack product arm of this relationship since 2021: React Native standards, architecture, and delivery side by side.
React Native · React · Node.js · .NET · PHP · Python · Go · Swift · VTEX · Magento · Nuvemshop · AWS · ERP integrations
Roberto Gentile
CTO & co-founder · Inova e-Business
