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Unity developer
- Age:
- 34 years
- City of residence:
- Dnipro
- Ready to work:
- Remote
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Vadym Semko
Unity Developer | Mobile Specialist (Android & iOS)
Dnipro • [open contact info ](look above in the "contact info" section) • [open contact info ](look above in the "contact info" section)
• github.com/RoninDvlpr
PROFESSIONAL SUMMARY
Adaptive Unity Developer with 7 years of experience in full-cycle mobile game development.
Proficient in C# and SOLID principles, having delivered 30+ projects ranging from rapid
prototypes to full commercial releases. Proven track record in navigating complex platform
requirements, including strict COPPA/GDPR compliance for kids' apps.
Seeking to apply established expertise while expanding into broader technical feature sets and
new domains.
CORE COMPETENCIES
Engine & Languages: Unity, C# (.NET/Mono).
Architecture: OOP, SOLID, DRY, Design Patterns, Component-based Design.
Mobile & Platforms: Android/iOS Deployment & Store Compliance, Adaptive UI, Unity Input
System, Build Size Optimization & Addressables.
Animation & VFX: DOTween, Unity Animator & Animator Controller, 3D Humanoid Animations
Integration, Spine & DragonBones Integration, Particle Systems.
Physics: Physics API & Components (2D/3D Colliders/Triggers, Rigidbodies, Joints, Physics
Materials, Effectors).
Integrations: Analytics (Firebase/Unity Analytics/GameAnalytics), Advertising (AdMob/Unity
Ads), IAP.
Multiplayer/Backend: Photon (Turn-based), Playfab (Matchmaking, User Data Persistence),
Google Play Services, Cryptography (BouncyCastle).
Tools: Git (GitHub/GitLab), Adventure Creator, Trello, JIRA, ClickUp, Adobe Illustrator,
Photopea.
Additional Skills: System Game Design.
PROFESSIONAL EXPERIENCE
Unity Developer | Orion Gaming World | October 2024 - December 2025
Acted as the primary developer responsible for the full lifecycle of mobile titles for a small-scale
studio.
Shipped a mobile (iOS/Android) title for children, managing everything from core loops to UI
systems.
Ensured full GDPR & COPPA compliance for data collection, meeting strict Google Play
requirements for children-directed games via filtered advertising and privacy protocols.
Integrated Spine animations with synchronized body-part colliders for precise gameplay
interaction.
Implemented Adaptive UI to ensure visual consistency across various devices' aspect ratios.
Unity Game Developer (Freelance/Consultant) | January 2026 - Present & May 2019 -
September 2024
Operated as a full-cycle developer for international clients, delivering 30+ functional prototypes
and MVP products.
Rapid Prototyping: Translated abstract game design concepts into playable MVPs for various
genres, focusing on clean, modular code for ease of scalability.
SDK Integration: Integrated an array of third-party SDKs for analytics, monetization, social
sharing, and multiplayer functionality (Photon, Playfab).
Consultation: Consulted non-technical clients, helping define project scopes and feature sets.
Provided game design insights, refining gameplay balance and UX flow to improve player
retention for client projects.
Leadership: Acted as the primary technical stakeholder, mentoring a junior developer and
ensuring code quality through peer code reviews and architectural guidance.
SELECTED PROJECTS
Detailed portfolio with gameplay videos and live builds available at:
https://contra.com/RoninDvlpr/work
Dice Hero | Mobile dice-poker and auto-battler hybrid
● Engineered a system of interconnected core (dice poker, auto-battler) & meta
(CCG-style characters, squad management) mechanics.
● Oversaw implementation of the store by a junior dev.
Dancing Animals | Mobile kids’ educational game
● Developed core gameplay loops and integrated Spine animations with dynamic physics
colliders.
● Navigated complex mobile store privacy compliance for directed-at-children applications.
Life Tower | Mobile/WebGL adaptation of the work-life balance tabletop game
● Developed the educational project up to the Estonian Gender Equality Commissioner’s
Office requirements.
● Implemented classroom social multiplayer mechanics using Playfab.
EDUCATION
Master's Degree in Information Security and Systems Engineering | Dnipro National
University | 2014
Unity Developer | Mobile Specialist (Android & iOS)
Dnipro • [
• github.com/RoninDvlpr
PROFESSIONAL SUMMARY
Adaptive Unity Developer with 7 years of experience in full-cycle mobile game development.
Proficient in C# and SOLID principles, having delivered 30+ projects ranging from rapid
prototypes to full commercial releases. Proven track record in navigating complex platform
requirements, including strict COPPA/GDPR compliance for kids' apps.
Seeking to apply established expertise while expanding into broader technical feature sets and
new domains.
CORE COMPETENCIES
Engine & Languages: Unity, C# (.NET/Mono).
Architecture: OOP, SOLID, DRY, Design Patterns, Component-based Design.
Mobile & Platforms: Android/iOS Deployment & Store Compliance, Adaptive UI, Unity Input
System, Build Size Optimization & Addressables.
Animation & VFX: DOTween, Unity Animator & Animator Controller, 3D Humanoid Animations
Integration, Spine & DragonBones Integration, Particle Systems.
Physics: Physics API & Components (2D/3D Colliders/Triggers, Rigidbodies, Joints, Physics
Materials, Effectors).
Integrations: Analytics (Firebase/Unity Analytics/GameAnalytics), Advertising (AdMob/Unity
Ads), IAP.
Multiplayer/Backend: Photon (Turn-based), Playfab (Matchmaking, User Data Persistence),
Google Play Services, Cryptography (BouncyCastle).
Tools: Git (GitHub/GitLab), Adventure Creator, Trello, JIRA, ClickUp, Adobe Illustrator,
Photopea.
Additional Skills: System Game Design.
PROFESSIONAL EXPERIENCE
Unity Developer | Orion Gaming World | October 2024 - December 2025
Acted as the primary developer responsible for the full lifecycle of mobile titles for a small-scale
studio.
Shipped a mobile (iOS/Android) title for children, managing everything from core loops to UI
systems.
Ensured full GDPR & COPPA compliance for data collection, meeting strict Google Play
requirements for children-directed games via filtered advertising and privacy protocols.
Integrated Spine animations with synchronized body-part colliders for precise gameplay
interaction.
Implemented Adaptive UI to ensure visual consistency across various devices' aspect ratios.
Unity Game Developer (Freelance/Consultant) | January 2026 - Present & May 2019 -
September 2024
Operated as a full-cycle developer for international clients, delivering 30+ functional prototypes
and MVP products.
Rapid Prototyping: Translated abstract game design concepts into playable MVPs for various
genres, focusing on clean, modular code for ease of scalability.
SDK Integration: Integrated an array of third-party SDKs for analytics, monetization, social
sharing, and multiplayer functionality (Photon, Playfab).
Consultation: Consulted non-technical clients, helping define project scopes and feature sets.
Provided game design insights, refining gameplay balance and UX flow to improve player
retention for client projects.
Leadership: Acted as the primary technical stakeholder, mentoring a junior developer and
ensuring code quality through peer code reviews and architectural guidance.
SELECTED PROJECTS
Detailed portfolio with gameplay videos and live builds available at:
https://contra.com/RoninDvlpr/work
Dice Hero | Mobile dice-poker and auto-battler hybrid
● Engineered a system of interconnected core (dice poker, auto-battler) & meta
(CCG-style characters, squad management) mechanics.
● Oversaw implementation of the store by a junior dev.
Dancing Animals | Mobile kids’ educational game
● Developed core gameplay loops and integrated Spine animations with dynamic physics
colliders.
● Navigated complex mobile store privacy compliance for directed-at-children applications.
Life Tower | Mobile/WebGL adaptation of the work-life balance tabletop game
● Developed the educational project up to the Estonian Gender Equality Commissioner’s
Office requirements.
● Implemented classroom social multiplayer mechanics using Playfab.
EDUCATION
Master's Degree in Information Security and Systems Engineering | Dnipro National
University | 2014
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The candidate's resume is posted at https://www.work.ua/resumes/19104456/