Open to opportunities

Abdullahi Yusuf

@abdullahiyusuf1

Message

Ruby on Rails developer building scalable APIs, authentication, and data-driven platforms.

Nigeria

Message

What I'm looking for

I’m looking to build secure, scalable Rails systems—APIs, authentication, and data-driven features—where clean code, testing, and reliable workflows matter. I want to own backend architecture end-to-end and ship through strong CI/CD.

I’m a Ruby on Rails developer focused on building production-grade systems—especially scalable APIs, secure authentication, and authorization. I design role-based access control, reliable endpoints, and clean backend architecture that holds up in real-world usage.

In my freelance ERP work, I’ve architected Rails monoliths (including Hotwire/Turbo/Stimulus and Tailwind) across multiple integrated modules. I build idempotent workflows for financial and operational processes, with background jobs, audit trails, and comprehensive test coverage using RSpec/FactoryBot or Minitest.

I also contribute to identity and analytics capabilities—such as secure token-validation APIs and refactoring dashboard analytics with query objects and scalable reporting filters. I’m passionate about Devise + JWT, Pundit policies, observability, and testing to ensure systems are dependable, secure, and maintainable.

Experience

Work history, roles, and key accomplishments

Freelance ERP Developer

Taraba State Internal Revenue Services

Jan 2026 - Present (6 months)

Architected and built the "Oversight" ERP monolith using Rails 8.1 with Hotwire/Turbo/Stimulus and Tailwind CSS, delivering integrated modules for document workflow, inventory-requisition control, user management, and a public verification portal. Implemented idempotent, RBAC-protected workflows with Solid Queue background jobs and audit trails, and built a secure document verification system with

Ruby on Rails Hotwire Turbo Stimulus Tailwind ERP Architecture Pundit Solid Queue Devise PostgreSQL Documentation Verification Keys AASM State Machine Public Verification Endpoint Minitest Docker Kamal CI CD

Software Developer

Outsource Global Technologies Limited

May 2025 - Present (1 year 2 months)

Contributed to an ERP used by 900+ employees, enhancing HR automation and authentication flows. Built secure identity verification APIs with token validation (signature, expiry, claims) and refactored an analytics dashboard using query objects and scalable reporting filters.

Ruby on Rails ERP Authentication Identity Verification API Development Dashboard And Reports

Freelance ERP Developer

Hamzis Constructions

Jan 2025 - Present (1 year 6 months)

Architected a Rails monolith with Hotwire/Turbo/Stimulus and Tailwind, covering core ERP modules (Projects, Tasks, Payroll, HR, Transactions). Designed idempotent financial transaction workflows with role-based access control and background jobs, supporting reliability with Devise, Pundit, PostgreSQL migrations, and RSpec/FactoryBot tests.