Alberto Payabyab

Software Developer and IT Infrastructure professional with hands-on experience supporting remittance and payment systems, cloud infrastructure, backend and frontend development, API integrations, QA testing, security practices, and production support. Experienced with Elixir/Phoenix, Next.js, TypeScript, AWS, databases, third-party payment services, and enterprise IT environments. Strong background in troubleshooting, system optimization, technical documentation, and collaborating across development and infrastructure functions.

IT Programmer - BC Remit and Money Exchange Service Inc.

(2021-01 - 2026-06)

• Developed and maintained software features for remittance and payment-related systems using Elixir, Phoenix, Next.js and TypeScript.
• Built frontend and backend functionality and integrated applications with internal services, REST APIs and third-party systems.
• Developed backend API endpoints and supported frontend-to-backend integration for customer transactions and payment workflows.
• Integrated and maintained payment partners and external services, including GCash and Ventaja, while supporting production issues and troubleshooting.
• Worked with payment workflows involving government services such as SSS, PhilHealth and Pag-IBIG.
• Participated in migration of functionality from a legacy Next.js/TypeScript application to a newer Elixir/Phoenix system.
• Supported AWS cloud infrastructure and deployments, including EC2, VPC, IAM, S3, EBS, RDS/Aurora, Lambda, SNS, WAF, CloudWatch, Route 53, CloudFormation, Amplify and Auto Scaling.
• Supported DNS and hosting configuration, SSL/TLS certificates, firewall/WAF controls, monitoring and production troubleshooting.
• Worked with cloud resources and application environments with a focus on reliability, security, scalability and optimization.
• Supported database environments and application connectivity using managed AWS database services.
• Performed software testing, regression testing, defect identification and production validation; tracked issues using Jira/Trello and supported automation testing with Appium/Selenium.
• Applied OWASP-oriented security practices and used security tooling such as Snyk for code and dependency checks.
• Provided IT infrastructure support covering workstations, servers, networking equipment, LAN/WAN/VPN connectivity, backups and end-user troubleshooting.
• Created technical runbooks and playbooks with step-by-step procedures for infrastructure and operational support.
• Used AI-assisted development tools including Claude, ChatGPT and Gemini for code generation, debugging, troubleshooting, research and productivity.

Tertiary Education - City College of Angeles (2016-01 - 2020-12)