QA Engineer · PC & VR · 8 Yrs Testing · 10 Yrs Engineering

Moses Kamau Mbugua

QA Engineer · PC & VR · Embedded Development · Performance & Release Testing

QA engineer with 8 years of hands-on game testing across PC, VR, iOS, and Android, most of it embedded inside development teams. Underneath that are 10 years of shipping games as a Unity/C# and Unreal developer — enabling me to trace bugs directly to their root cause in profiler traces, crash logs, and engine code instead of only describing symptoms.

Nairobi, Kenya (UTC+3, full overlap with EET) · Remote

mosesgamedev@gmail.com

+254 707 896 271

Read Crowd Performance Case Study Read Pawn to Don QA Study Download Resume (PDF)

01 // Technical Case Studies

Deep-Dive Performance & QA Investigations

Featured Technical Case StudyUnity · WebGL · 40+ NPCs

Diagnosing and Fixing Crowd Performance in a Unity/WebGL Third-Person Game

A multi-layered performance investigation on Cat Distribution Network. Uncovered four masked bottlenecks: broken LOD 3 culling (0% transition threshold), empty-but-enabled modular SkinnedMeshRenderers, deceptive Editor IMGUI / GC plateaus, and camera-proximity LOD0 polygon explosion.

Frame Rate

60+ FPS

Stable WebGL

Build Size

26 MB

Budget: <50 MB

Crowd Size

40+ NPCs

NavMesh-driven

Approach

Profiler-1st

Zero guesswork

Read Full Interactive Case Study Case Study PDF

Featured QA & Release Case StudyFuncell Games · Android Mobile

Release Testing on Pawn to Don: Branching Narrative Validation & Soft-Lock Investigation

Owned release-candidate validation end-to-end for a 30-day branching narrative RPG. Solved the testability challenge of dozens of branching paths with a save-file checkpoint library, and diagnosed an elusive logless soft-lock by correlating analytics breadcrumbs with Unity Profiler frame spikes dropping animation events.

Store Scale

1M+ Downloads

4.4★ (21.2k reviews)

Validation Matrix

3 Device Tiers

Low-end to high-end

Regression Speed

Save Library

Minutes vs. hours

Root Cause Fix

Architectural

Beyond symptom

Read Full Interactive Case Study Case Study PDF

02 // Career History

Hands-On Testing & Engineering Experience

QA Tester

Good Gamer Group · Nairobi, Kenya

2025 – Present

Primary role testing PC games and companion software under active development.
Tested VR titles and applications, including testing Meta’s VR development tools (a custom engine for building VR titles).
Hands-on testing with Meta Quest 2 and Quest 3 hardware using Steam Link and Horizon Link for PC VR verification.

QA / Release Testing (Embedded in Development)

Funcell Games · Nairobi, Kenya

Oct 2024 – Nov 2025

Owned full release-candidate validation for Pawn to Don (Unity, Android; 1M+ downloads, 4.4★) before every Google Play submission: startup time, 30fps floor, orientation, UI & settings, full gameplay play-throughs, analytics events, and Addressables/DLC loading.
Ran validation passes across 3 device tiers (low-end to high-end, 45m to 1h 45m per pass). Sign-off bar: zero crashes, zero progression blockers, verified analytics.
Tracked bugs in Jira with severity and priority logged separately; every report included repro steps, build number, platform, and save capture. Triaged with devs 2x/week.
Built a library of save files at key story points so regression could jump straight to affected sections of a 30-day branching narrative instead of replaying full playthroughs.
Investigated a non-crashing soft-lock with no exception or ANR: used analytics breadcrumbs + Unity Profiler + in-build FPS overlay to isolate a frame spike dropping animation events that progression depended on. Flagged root cause and absence of a progression failsafe.
Executed battery and network resilience testing on Android using dumpsys, Battery Historian, and Charles Proxy (degraded connections, dropped connectivity, reconnection).
Built a multi-platform CI/CD pipeline with GitHub Actions (GameCI) running automated unit and integration tests covering game logic, inventory systems, and network payload serialization.

Founder & Studio Lead (QA & Release Testing)

Mesmerize Studio · Nairobi, Kenya

2016 – Present

Ran pre-release testing on the studio’s mobile and interactive titles before Google Play and App Store submission, and reviewed partner builds before release.
Owned iOS and Android store submission end-to-end, including production test tracks and staged rollout sign-off.
Profiled iOS battery usage with Xcode Instruments (Energy Log), and integrated and debugged third-party SDKs in Unity projects.

Lead Developer (QA across a live portfolio)

Usiku Games · Nairobi, Kenya

2020 – 2021

Ran continuous testing across a portfolio of live HTML5 games and reported issues back to engineering teams.
Rebalanced live titles (difficulty, pacing, progression) using PlayFab and Firebase analytics, funnel analysis, and retention tracking.

Game Developer (QA)

Internet of Elephants · Nairobi, Kenya

2018 – 2019

Playtested features and full builds before rollout on AR experiences, and built Unity editor tooling for the content team.

Interactive Experience Designer

Bean Interactive · Nairobi, Kenya

2016 – 2017

Designed and programmed mobile games and VR/AR experiences for physical brand activations.

03 // Tooling & Methodology

QA Tools, Platforms & Process

Testing & Release Validation

>Structured release-candidate checklists (device/platform, UI, gameplay, technical)
>Repeatable verification passes with full retest after failed builds
>Go / No-Go rollout sign-off for Google Play & App Store

Bug Tracking & Test Management

>Jira (severity and priority tracked separately, clear repro steps)
>TestRail test case management & test suite organization
>In-house engine-integrated issue trackers

Profiling & Root-Cause Debugging

>Unity Profiler (CPU frame time, draw calls, memory, GC allocs)
>Android logcat, Xcode Instruments (Energy Log, memory leaks)
>In-build FPS overlays, Charles Proxy & Battery Historian

VR & Multi-Platform Hardware

>Meta Quest 2 & Meta Quest 3 hardware testing
>Steam Link & Horizon Link for PC VR workflows
>Familiar with OpenXR & SteamVR; VR development in Unreal & Unity

Engines & Engineering Foundation

>Unity & C# (10 years hands-on development & QA)
>Unreal Engine (including working knowledge of UE5; VR & game titles)
>Deep understanding of PC gaming & FPS gameplay mechanics

Automation & LiveOps Verification

>GitHub Actions + GameCI multi-platform build automation
>Automated unit & integration tests (game logic, inventory, network payloads)
>PlayFab, Firebase, Addressables/DLC delivery verification

04 // Education & Training

Credentials

2021 · Cape Town, South Africa

Hyper-Casual Games Training Programme

Crazy Hubs

2016 · Nairobi, Kenya

Diploma, IT Systems and Support

Nairobi, Kenya

05 // Contact

Get In Touch

Applying for QA Engineer, PC/VR Testing, and Technical Game Release roles. Based in Nairobi, Kenya (UTC+3, full overlap with EET), available remote worldwide.

mosesgamedev@gmail.com

Phone

+254 707 896 271

Timezone

UTC+3 (Full EET Overlap) · Remote

Send Email Download Resume Back to Mesmerize Games