Hi! I'm Wachsirin Sarayutpisai (hisguitar), Developer with experience in Unity and C#, specializing in gameplay systems and system logic. Graduate of Bangkok University. Skilled in building reliable systems and implementing user-focused features.

• 🌍 Based in Thailand
• ✉️ Contact me at wachsirin.sara@gmail.com
• 🧠 Skilled in system logic, debugging, troubleshooting, Unity, C#, and UI design
• 🚀 Showcasing projects on Itch.io

Bangkok University | August 2021 - December 2024
School of Information Technology and Innovation
Games and Interactive Media
Cum GPA: 3.71 (First-class) 🏅

Hatyairatprachasun School | May 2018 - April 2021
English and Math
Cum GPA: 3.11

Starbucks | Barista | July 2025 - November 2025
Responsibilities:

• Delivered high-quality customer service in a fast-paced environment while consistently meeting daily sales targets.
• Communicated product information and promotions clearly to customers.
• Managed inventory, checked expiry dates, and ensured product quality.
• Handled store opening/closing procedures and maintained operational standards.

ArtSticker Design | Graphic Designer | March 2025 - April 2025
Responsibilities:

• Designed car stickers, wraps, banners, and promotional materials based on client requirements.
• Created logos and visual identities for small businesses.
• Edited and enhanced images using Photoshop and Illustrator.
• Operated sticker cutting machines and coordinated with installation teams.
• Produced photo and social media content for company marketing.

AKIBA NIKU アキバ Innotel Corporation Co. Ltd. | Kitchen Assistant | September 2024 - November 2024
Responsibilities:

• Prepared ingredients and assembled dishes efficiently under time constraints.
• Assisted with inventory purchasing and tax invoice documentation.
• Trained new staff to ensure smooth workflow and consistency.

WolvEden Production Co. Ltd. | Unity Developer | May 2024 - August 2024
Responsibilities / Achievements:

• Developed gameplay systems in Unity (C#) using SOLID principles and state-based design.
• Implemented enemy AI, combat systems, item drops, and settings (graphics/audio).
• Built game levels with NavMesh for AI navigation and behavior.
• Contributed to GDD creation, in-game asset modeling, and team-based planning.
• Participated in rapid-development game jams, delivering multiplayer prototypes within 7 days.

Software & System

• C#
• System Logic & Debugging
• Git & GitHub
• Firebase
• UX/UI Design

Software & System

• Unity (2D, 3D, VR, Mobile)
• Multiplayer Networking
• Game AI

Design & Media

• Proficient in Adobe Photoshop, Illustrator, Premiere Pro, and After Effects
• Autodesk Maya
• Substance Painter
• Figma

• Critical Thinking & Problem Solving
• Fast Learner & Self-Motivated
• Communication & Team Collaboration
• Time Management & Prioritization
• Creative Presentation Skills

• 2D top-down multiplayer RPG.
• Key contributions: Implemented multiplayer networking and real-time chat system; developed PvE/PvP combat mechanics; designed and implemented character customization.
• Play or download on Itch.io

• 2D side-scrolling action game.
• Key contributions: Designed enemy AI; implemented lighting and audio systems; developed a custom sound manager; managed scene transitions.
• Developed using C# and Unity Engine.
• Itch.io | GDD & Source Code

• 3D roguelike run-and-gun mobile game.
• Key contributions: Implemented randomized ability card selection system; developed RPG stats and upgrade systems; designed portal-based skills; implemented procedural map generation.
• Collaborative project with qiqitaro and loneguss
• Download on Itch.io

• 3D VR horror single-player game.
• Key contributions: Implemented trigger-based dialogue system; designed and developed ghost event activations; created behavior patterns for ghost encounters.
• Collaborative project with qiqitaro and loneguss
• Watch gameplay on YouTube.

• 2D local co-op action versus game.
• Key contributions: Designed a random weapon slot-machine system; implemented local co-op gameplay; developed multiple weapons with unique abilities.
• 🏆 Ranked 2nd place at Global Game Jam 2024 (Rangsit University).
• Collaborative project with qiqitaro and loneguss
• Play or download on Itch.io

• 3D action roguelik game.
• Developed core gameplay systems during a 3-month internship, focusing on intelligent enemy AI, combat mechanics, and system balancing.
• Implemented player-tracking AI with wall-climbing multi-surface navigation, a combat combo system, graphics and audio settings, and performed player–enemy balance tuning with appropriate visual and sound effects.