Paywand Mohammed

Full-stack software developer with 3+ years of experience designing and shipping enterprise web applications for the telecommunications and business operations sectors. Specialized in Ruby on Rails and modern JavaScript frameworks (React, Vue.js, Next.js), with a track record of architecting scalable systems, modeling complex business workflows, and tuning database performance at scale. Re:Coded bootcamp alumnus and Computer Science graduate with a strong foundation in software engineering principles, clean architecture, and agile delivery.

Software Developer - o3-telecom (FTTH ISP) - Erbil, Iraq

(2023-12)

Design and maintain internal business systems on Ruby on Rails, MySQL, and React serving 50+ employees across multiple cities.

• Architected and implemented a comprehensive OSP (Outside Plant) task management system featuring multi-stage approval workflows, city-based ticket routing, and automated email notifications by department.
• Customized and optimized a self-hosted Chatwoot deployment to support 50+ concurrent agents, including a full-stack prohibited-words filtering system and brand customization.
• Refactored monolithic 2,000+ line controllers into clean, SOLID-aligned service objects, improving maintainability and test coverage.
• Built employee-management modules (leave requests, card requests, purchase requests) with overlap detection, multi-stage approvals, and department-specific business rules.
• Implemented database partitioning on a high-volume notifications table (800k+ rows) with automated monthly partition creation via the MariaDB event scheduler.
• Developed a WhatsApp Business API notification system for FTTH service-expiry alerts, including delivery tracking and multilingual templates (Kurdish, Arabic, English).
• Deployed Rails 8 API + Next.js 15 production stack to DigitalOcean with Kamal, including a CVE-2025-55182 emergency patch coordinated under tight timelines.
• Built automated monthly CSV reporting with scheduled email distribution to stakeholders.

Frontend Developer Intern - RIGT Company

(2022 - 2022)

• Built responsive web interfaces using HTML, CSS, and JavaScript in collaboration with the design team.
• Implemented pixel-perfect UI components and gained hands-on experience with modern frontend workflows.

Supervisor - Sima Market

(2015 - 2021)

Progressed from cashier to inventory and supervisory roles; managed daily operations and coordinated team activities.

• Developed strong organizational, leadership, and customer-service skills.

B.Sc. - Computer Science (Information Technology) - Salahaddin University, College of Science (2019-09 - 2023-06)

Full-Stack Web Development Bootcamp - Web Development - Re:Coded (2022-07 - 2022-12)

Freelancer Training Program - Freelancing - Mercy Corps & Gaza Sky Geeks