John Genesis Saturno

Developing and maintaining RESTful APIs using Laravel 12 for an internal casino back-office platform. Implementing secure backend services for financial transactions, reporting, and administrative operations. Practicing AI-first development workflows using tools such as Claude Code and ChatGPT to accelerate development, debugging, and architecture planning.

Back-End Developer - Betrnk Tours Inc. - BGC, Taguig City, Metro Manila

(2025-06)

• Developing and maintaining RESTful APIs using Laravel 12 for an internal casino back-office platform.
• Implementing secure backend services for financial transactions, reporting, and administrative operations.
• Practicing AI-first development workflows using tools such as Claude Code and ChatGPT to accelerate development, debugging, and architecture planning.
• Designing scalable backend modules to support casino management systems including player management, transaction monitoring, and reporting dashboards.
• Optimizing database queries and improving backend performance for high-volume transactional systems.
• Collaborating with frontend developers and internal stakeholders to deliver stable internal tools for operations and finance teams.

Back-End Developer - Gurufin (formerly Surgepay) - Seoul, South Korea

(2023-11 - 2025-06)

• Guiding and supporting junior developers in improving technical skills.
• Making strategic decisions regarding the technology stack, frameworks, and system architecture.
• Improving server-side query performance.
• Monitoring inbound requests to infrastructure.
• Managing the Accounting CMS for an online casino platform.
• Implementing prevention measures against possible DDoS attacks.
• Monitoring unusual player behavior and suspicious activities.
• Integrating games through third-party providers.
• API Payment Gateway Integration.
• Coordinating with the tech support team regarding reported bugs and deployments.

Senior Back-End Developer - NTT Ltd. (Philippine Branch) - Quezon City, Metro Manila

(2024-05 - 2025-02)

• Guiding and supporting junior developers in enhancing their technical abilities.
• Making strategic decisions regarding the technology stack, frameworks, and overall system architecture.
• Improving server-side query performance for better efficiency.
• Overseeing incoming requests to infrastructure.
• Managing the Accounting Content Management System (CMS) for an Online Casino platform.
• Implementing preventive measures against potential DDoS attacks.
• Monitoring player behavior for suspicious activities.
• Integrating games via third-party providers.
• API Payment Gateway Integration.
• Collaborating with the tech support team to address reported issues and ensure smooth feature deployments.

Senior Back-End Developer - MPOTECH / 8BACUS - Makati City, Metro Manila

(2023-03 - 2023-09)

Project Ceased

• Making decisions on technology stack, frameworks, and system design.
• Optimizing server-side queries to boost efficiency.
• Monitoring inbound infrastructure requests.
• Managing the Accounting CMS of the online casino platform.
• Implementing preventive measures against DDoS attacks.
• Monitoring player behavior for suspicious activity.
• Approving pending transactions when required.
• Coordinating with tech support regarding bugs and feature deployments.

IT Systems Developer - Richetec System Automation - Carmona, Cavite

(2022-03 - 2022-10)

• Providing technical leadership to the backend development team.
• Designing the overall architecture of the backend system.
• Conducting code reviews to maintain code quality and best practices.
• Participating in project planning and estimating development efforts.

Backend Developer I (KYC Department) - BPO Company - Sta. Rosa City, Laguna

(2019-11 - 2021-07)

• Designing and implementing server-side application logic.
• Developing core backend functionality and managing authentication.
• Ensuring data security and integrity.
• Implementing caching mechanisms to improve application speed.

Full Stack Developer (Freelance) - Freelancing / Commission Projects

(2018-01)

• Designing and maintaining databases.
• Developing APIs for frontend and backend communication.
• Implementing security best practices against web vulnerabilities.
• Writing and conducting unit tests to ensure code reliability.

Bachelor of Science - Information Technology - STI College Calamba (2018)

Secondary - Lady of Rose Academy Inc. (2014)

Primary - Paulinian Learning School, Inc. (2009)