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I’m a passionate and experienced Full-Stack and Game Programmer with over a decade of professional experience building scalable web platforms and immersive game systems. My current focus lies in Unreal Engine 5, where I specialize in C++ gameplay systems, multiplayer networking, GAS architecture, and real-time optimization for high-performance game environments. I enjoy working independently or as part of a team that values clean code, rapid iteration, and creative problem-solving. I’ve shipped mobile apps, web systems, and dedicated multiplayer games, always eager to learn and grow my skills further.…I’m a passionate and experienced Full-Stack and Game Programmer with over a decade of professional experience building scalable web platforms and immersive game systems. My current focus lies in Unreal Engine 5, where I specialize in C++ gameplay systems, multiplayer networking, GAS architecture, and real-time optimization for high-performance game environments. I enjoy working independently or as part of a team that values clean code, rapid iteration, and creative problem-solving. I’ve shipped mobile apps, web systems, and dedicated multiplayer games, always eager to learn and grow my skills further.

Mark Anthony Oasan

Full Stack Developer, Game Developer, Programmer, +2

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I’m a passionate and experienced Full-Stack and Game Programmer with over a decade of professional experience building scalable web platforms and immersive game systems. My current focus lies in Unreal Engine 5, where I specialize in C++ gameplay systems, multiplayer networking, GAS architecture, and real-time optimization for high-performance game environments. I enjoy working independently or as part of a team that values clean code, rapid iteration, and creative problem-solving. I’ve shipped mobile apps, web systems, and dedicated multiplayer games, always eager to learn and grow my skills further.…I’m a passionate and experienced Full-Stack and Game Programmer with over a decade of professional experience building scalable web platforms and immersive game systems. My current focus lies in Unreal Engine 5, where I specialize in C++ gameplay systems, multiplayer networking, GAS architecture, and real-time optimization for high-performance game environments. I enjoy working independently or as part of a team that values clean code, rapid iteration, and creative problem-solving. I’ve shipped mobile apps, web systems, and dedicated multiplayer games, always eager to learn and grow my skills further.

Available to hire

I’m a passionate and experienced Full-Stack and Game Programmer with over a decade of professional experience building scalable web platforms and immersive game systems. My current focus lies in Unreal Engine 5, where I specialize in C++ gameplay systems, multiplayer networking, GAS architecture, and real-time optimization for high-performance game environments. I enjoy working independently or as part of a team that values clean code, rapid iteration, and creative problem-solving. I’ve shipped mobile apps, web systems, and dedicated multiplayer games, always eager to learn and grow my skills further.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Tagalog

Advanced

Work Experience

Game Programmer | Unreal Engine Specialist at ohmcodes.com

February 1, 2022 - June 15, 2025

Focused on developing rapid prototypes to validate client concepts and gameplay mechanics. Converted Blueprints to optimized C++ to enhance performance in critical systems. Designed and integrated a modular Gameplay Ability System (GAS), built scalable inventory systems, and enhanced movement fidelity using Advanced Locomotion Systems (ALS). Created 3D models, rigs, animations, and high-quality textures/materials, and developed custom UE5 plugins. Implemented dedicated server-based multiplayer games using rollback netcode and used multi-threaded systems for AI pathfinding and voxel terrain.

Game Programmer | Unreal Engine Specialist at ohmcodes.com

February 1, 2022 - June 14, 2025

Focused on developing rapid prototypes to validate client concepts and gameplay mechanics. Converted Blueprints to optimized C++ to enhance performance in critical systems. Designed and integrated a Gameplay Ability System (GAS) for a modular skill/ability architecture and built scalable inventory systems featuring drag-and-drop, stacking, and equipment management. Enhanced movement fidelity using Advanced Locomotion Systems (ALS), created custom physics-based tweaks, and integrated Nanite & Lumen to deliver high-fidelity visuals while maintaining performance budgets. Developed 3D models, rigs, and animations in Blender, authored high-quality textures/materials using Substance Painter/Designer and Adobe Creative Suite, and developed custom UE5 plugins. Implemented dedicated server-based multiplayer games with rollback netcode using Unreal Engine’s replication system and leveraged multi-threaded systems for AI pathfinding and voxel terrain.

Senior Full Stack Developer at countdownmarketplace.com

March 1, 2018 - April 30, 2021

Created Django Rest Framework API for React Native Expo-CLI app across iOS and Android. Maintained frontend and backend of the eCommerce site with integrations including Stripe payment, OpenExchange API for currency conversion, and Shippo API for delivery functions. Automated processes using cronjobs and Celery, developed web scrapers for CSV-to-database imports, managed AWS servers, implemented WordPress for blogs, and optimized website performance.

Senior Full Stack Developer at countdownmarketplace.com

March 1, 2018 - April 30, 2021

Created Django Rest Framework API for React Native Expo-CLI app, enabling iOS and Android functionality. Maintained frontend and backend of eCommerce site, integrated Stripe payment gateway, OpenExchange API for currency conversion, and Shippo API for delivery functions. Automated processes with cronjobs and Celery, developed a web scraper for CSV to database automation, and managed AWS server configuration and maintenance. Implemented WordPress for blog CMS and optimized website performance.

Back-end Programmer at Internetsalesresults.com

June 1, 2014 - February 28, 2018

Created and maintained backend for clients focusing on Shopify and WordPress integration. Developed custom scripts/plugins to meet client requirements, designed UI/UX, managed database schemas, integrated payment gateways like Authorize.net, Paypal, and Stripe, automated forms for medical websites, built inventory and booking systems, optimized site speeds near 100% PageSpeed scores, and automated CSV data uploads.

Back-end Programmer at Internetsalesresults.com

June 1, 2014 - February 28, 2018

Created and maintained backend systems for clients focusing on Shopify and WordPress integration. Developed custom scripts/plugins tailored to client requirements, designed UI/UX for websites, managed database schemas and data integrity, and integrated payment gateways such as Authorize.net, PayPal, and Stripe. Automated medical website forms, developed inventory and booking systems, enhanced site speed and optimization to approach 100% PageSpeed scores, and created scripts to translate CSV data into databases.

Senior Software Engineer / MIS head at Home and Storage World INC.

March 1, 2013 - July 31, 2014

Automated sales data calculations and designed a user-friendly inventory system to improve operational efficiency. Developed admin panels and backend services using JavaScript, handled MySQL database management, and created seamless data upload interfaces. Collaborated with clients and employees to tailor systems to practical needs, enhancing system performance and usability.

Senior Software Engineer / MIS head at Home and Storage World INC.

March 1, 2013 - July 31, 2014

Automated sales calculations and streamlined data management by designing a custom system that minimized manual input. Implemented a user-friendly inventory management system based on client and employee feedback. Developed admin panels and backend services using JavaScript, and handled MySQL database management. Collaborated with stakeholders to tailor efficient workflow solutions.

System Engineer and Web Developer at SLID Innovative Infrastructure INC.

March 1, 2011 - March 31, 2013

Built company website using HTML, PHP, MySQL, jQuery and JavaScript. Obtained HP certification to service a broad range of hardware, provided support for server blade data centers, assembled server racks, customized network cables, installed software, configured networks, and ensured seamless hardware and software integration. Managed company online visibility and helped clients enhance operational efficiency through customized server setups.

System Engineer and Web Developer at SLID Innovative Infrastructure INC.

March 1, 2011 - March 31, 2013

Developed the company website using HTML, PHP, MySQL, jQuery, and JavaScript. Obtained HP certification for servicing various hardware including desktops, laptops, and printers. Provided technical support and setup for server blade data centers including assembling racks, network configuration, and software installation. Managed hardware and software integration ensuring seamless system performance for clients.

Senior CAD Engineer / Graphic Artist at RubertJames Exhibit Masters Corp

January 1, 2010 - December 31, 2011

Designed custom exhibition booth layouts, 3D booth expos, floor plans, and electrical plans using AutoCAD and SketchUp. Created advertising media prints, conducted on-site assessments for booth fit, and contributed to major expos with designs enhancing presentations and functionality.

Lead Graphic Artist at Manila Escapades

January 1, 2010 - December 31, 2011

Created visually compelling travel and culture-related designs using Photoshop and Illustrator. Customized layouts with magazine design principles for brochures and mini-magazines to engage readers and elevate brand aesthetics.

Senior CAD Engineer / Graphic Artist at RubertJames Exhibit Masters Corp

January 1, 2010 - December 31, 2011

Designed customized exhibition booth layouts and floor plans using AutoCAD and SketchUp with V-Ray rendering. Developed electrical plans including load calculations and breaker placements. Created advertising print materials and stickers using Photoshop, CorelDRAW, and Roland cutter. Conducted site inspections to optimize booth design and compliance with safety standards for major expos.

Lead Graphic Artist at Manila Escapades

January 1, 2010 - December 31, 2011

Designed visually compelling layouts and graphics showcasing various cultures and travel destinations. Created brochures and mini-magazines using Photoshop and Illustrator, integrating magazine design principles to enhance visual appeal and reader engagement.

Lead Graphic Artist at Habitat Landscaping Services

January 1, 2008 - December 31, 2009

Collaborated with architect father to capture and create photo-realistic 3D landscape designs using Photoshop. Enhanced images for realistic high-quality presentation and combined graphic design with architectural insights.

Lead Graphic Artist at Habitat Landscaping Services

January 1, 2008 - December 31, 2009

Collaborated with architect to create photo-realistic landscape designs by capturing client property photos and transforming them into detailed 3D visualizations using Photoshop. Enhanced design quality through architectural guidance and graphic design skills.