Open to opportunities

Aaron Charley

@aaroncharley21

Message

Senior Software Engineer

Indonesia

Message

Jalan Haji Umar 28, Lampung, Indonesia, 35214

mazabiru@outlook.com

+62 895-3774-99913

Experience

Work history, roles, and key accomplishments

Senior Full Stack Engineer

Hastree Technologies

Oct 2024 - May 2026 (1 year 7 months)

Developed service-based SaaS applications using Ruby on Rails, React, TypeScript, GraphQL, and PostgreSQL, delivering workflow features for eligibility, scheduling, pricing rules, and customer-facing updates. Built GraphQL and UI for bulk-processing workflows, optimized PostgreSQL/Redis for large datasets, modernized CI/CD pipelines, and mentored engineers while translating stakeholder feedback in

React TypeScript GraphQL PostgreSQL Redis GraphQL APIs RSpec Jest Cypress Integration Testing CI CD GitHub Actions Docker AWS Scrum Kanban Authorization Query Optimization Indexing Testing Automation Mentorship

Full Stack Developer

ScrapBays

Oct 2023 - Aug 2024 (10 months)

Built Ruby on Rails features and JavaScript/React UI for transaction management workflows, including pricing adjustments, permissions, and operational review queues. Implemented REST and early GraphQL patterns, created automated test suites, developed Sidekiq/Redis background jobs for batch updates, and supported AWS-hosted environments while resolving production issues.

Ruby on Rails JavaScript React PostgreSQL REST APIs GraphQL Controllers and Serializers SQL Queries RSpec Capybara Sidekiq Redis Batch AWS Logging Kanban Testing Automation

Junior Web Developer

Crocodic

Jul 2022 - Sep 2023 (1 year 2 months)

Developed JavaScript, HTML, CSS, Ruby on Rails, and SQL features for search-driven web applications, implementing UI and backend updates for internal tooling and administrative workflows. Wrote unit tests and regression checklists, refactored legacy UI components, participated in Scrum planning/code reviews/production support, and supported releases while resolving tickets across frontend, backend