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Gabriel OliveiraGO
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Gabriel Oliveira

@gabrieloliveira1

I build reliable Ruby on Rails platforms, APIs, integrations, and full-stack product features.

Brazil
Message

I've built and evolved multi-tenant CRM, messaging, and lead marketplace products at Fetchly Labs and Contact2Sale. At Fetchly Labs, I work on Container Alliance CRM using Ruby on Rails 7, GraphQL, Vue.js, and domain-driven, event-driven architecture.

At Contact2Sale, I designed a messaging platform with Rails REST APIs and Meta WhatsApp integrations, supporting high-volume campaigns, audience segmentation, bulk email, Sidekiq, Redis, MySQL, MongoDB, and OpenSearch. I also delivered lead purchasing and freemium workflows, optimized critical ActiveRecord and SQL flows, and built daily-use product features for sales teams.

I've supported production SaaS reliability by resolving incidents and maintaining 50+ third-party integrations. I also build automated quality coverage with RSpec and Cypress, including GitHub Actions CI/CD pipelines.

Experience

Work history, roles, and key accomplishments

Education

Degrees, certifications, and relevant coursework

Universidade Federal do Rio Grande logoUG

Universidade Federal do Rio Grande

Bachelor of Science, Computer Science

Pursued higher education in Computer Science, focusing on software engineering principles and practices.

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