g
go_bob

Esdras S

@go_bob

Full Stack Developer

Brazil
Portuguese
About me
I am a Full Stack Developer experienced in creating scalable web applications and SaaS platforms. I specialize in Node.js, TypeScript, React, Next.js, Go, and PostgreSQL. I have extensive experience with APIs, authentication, payments, AI integrations, and multi-tenant architectures.... Read more

Skills

g
go_bob
Esdras S
Offline • 

See my services

Programming & Tech
I will fix your python script bug and explain what was wrong
From$25 / projectMore details
Programming & Tech
I will scrape any website and deliver the data as a clean CSV or json file
From$35 / projectMore details

Work experience

Atos

Full Stack Developer

Atos • Freelance

Feb 2026 - Present • 8 mos

Engineered a multi-tenant SaaS platform for automated WhatsApp communication. Built with Next.js, React, Express, and Supabase (PostgreSQL with RLS). • Implemented automated recurring messaging, scheduled daily devotionals, and real-time analytics dashboards. • Integrated full Stripe billing infrastructure (Checkout, Customer Portal, Webhooks) featuring a 15-day trial and tiered subscriptions. • Architected per-tenant WhatsApp session pooling with Baileys, cron schedulers, intelligent rate limiting, and auto-reconnect logic. • Developed a super-admin portal for tenant management and audit logging, ensuring strict data isolation via Supabase RLS.

Operion_Ecommerce and Software Sdn Bhd

Full Stack Developer

Operion Ecommerce and Software Sdn Bhd • Freelance

Jan 2026 - Present • 9 mos

Developed a multi-tenant SaaS platform tailored for commercial cleaning companies, unifying CRM, ERP, HR, Finance, and Analytics modules. Built with Next.js, NestJS, TypeScript, and Supabase. • Architected strict multi-tenant data isolation and a granular permissions system (roles, profiles, overrides). • Structured a scalable TypeScript monorepo using Turborepo and pnpm workspaces, utilizing Prisma ORM with versioned migrations. • Implemented organization-level isolated cloud storage with dedicated buckets for contracts, employee records, and invoices. • Built end-to-end integrated modules covering operations, billing, and operational metrics.