Darren Tsung

Backend engineer with a focus on code architecture, and high-performance distributed systems. Most recently worked on scaling OneSignal's notification delivery pipeline from sending 75k/sec to >1.8M/sec.

See my resume for more information.

Project Showcase

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  Tweeter

  (Go, Nomad, Terraform, Packer)

  Backend API deployed on reproducible infrastructure (Nomad cluster) provisioned by Terraform. Every commit has CI that provisions, deploys, and run smoke tests in ~3 minutes.

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  rspec-timing-splitter

  (Rust)

  CLI tool used to parse rspec output and determine optimal split of test files. Replaced CircleCI's built-in splitter, sped up CI builds by 3 minutes (26%).

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  Open-Faced Chinese Poker Hypothesis

  (Rust)

  Simulation used to prove out hypothesis for optimal play in a certain scenario for Open-Faced Chinese Poker.

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  DTValidator

  (C#, Unity3D)

  Tool for validating outlets for the Unity Editor, designed to integrate with unit tests. Article with +10K views, repo with 100+ stars.

• PHASERBEAK

  (C#, Unity3D)

  Fast-paced, local-multiplayer party game.

• Osmo SDK Puzzler

  (C#, Unity3D)

  Built in 1 day as a proof-of-concept for the SDK I was building at Osmo (company).

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  Don’t Re-invent Finite State Machines: How to Repurpose Unity’s Animator

  (C#, Unity3D)

  Article with +60K views on how to use Unity's animator system as a state machine.

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  Jellyquest (reborn!)

  (C#, Unity3D)

  Mobile arcade-y game with a meta-game twist.

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  Finite Graph Machine

  (C#, Unity3D)

  A Unity3D Editor Tool for building state machines, inspired by the Animator.

• Dojo You Didn't!

  (C#, Unity3D)

  Hackathon project for Cartoon Network Game Jam, worked with artists Ted and Corey. Placed top 5 out of 40+ teams with $48,000 prize pool.

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  The Clock’s Ticking: How to Optimize Compile Time in Unity

  (C#, Unity3D)

  Article and utility for improving compile time in Unity3D. Article with +18K views, repo with 160+ stars.

• Global Game Jam 2016

  (Unity3D, OculusSDK)

  48-hour Global Game Jam 2016 project. Play as a tribal musician and repeat the melody from the stars.

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  LAZERBEAK

  (C#, Unity3D)

  24-hour hackathon project. 2-4 players play as minimalistic birds with lasers to fight to the last man standing. Voted audience choice.

• Cloudface

  (C#, Unity3D)

  Worked as programmer with artists (Ted and Corey) on a 2D Platformer with cloud-based abilities. Over 150k+ views on tigsource forums.

• Low Poly Ocean

  (Unity3D, Shaders)

  Creates a low-poly ocean effect with a perlin noise shader + voronoi mesh points.

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  Ascii Post Processing Effect

  (Unity3D, Shaders)

  Shader that cuts rendered image into tiles, and superimposes ascii images from a mapping based on the brightness of the tile.

• Burn Shader

  (Unity3D, Shaders)

  Burn shader based on a dissolve map and burn ramp.

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  Duck Untitled Project

  (C#, Unity3D)

  Untitled 2D Platformer. Built a complex loot system / database and editor in Unity.

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  Hammer-Time

  (C#, Unity3D)

  Developed with Unity for the Indies vs Gamers game jam. Swing a giant hammer around to destroy drones and build up combos!

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  Cowtipping Adventure

  (C#, Unity3D)

  Developed with Unity for the Epic Game Jam 2. Sneak up on a cow and try to tip it over, if it catches you moving then you lose!

• JellyQuest

  (Objective-C, cocos2D)

  An iOS action game built with Coconut (custom entity-component-system framework) and cocos2D-objc.

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  Coconut

  (Objective-C, cocos2D)

  An objective-c entity-component-system library designed for use with cocos2d-objc.

• Takeover

  (Objective-C, cocos2D)

  Fast-paced iOS strategy game. Won 2nd place in semester long game making competition with $4,500 prize pool.

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  WorkTime

  (Objective-C)

  iOS application that reads in a database of state and federal tax brackets to compute how much you make per hour. Visualizes how much time at work an item will cost you.

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  Low-fi Waves

  (C++, Shaders)

  Experimentation into basic shader code. Applies a sin function on the height of each individual vertex of a Perlin Noise surface.

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  Wuff

  (Objective-C)

  Spontaneous event planning and invitation iOS app. Developed over the course of the semester in a team of five.

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  Breadcrumbs

  (C#, Unity3D)

  Global Game Jam (GGJ2014) entry. Built in the span of two days with a team of four.

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  Raytracer

  (C++)

  A raytracer implemented in C++. Does depth-of-field and texture modeling.

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  Inverse Kinematics (IK) Solver

  (C++)

  Finds solutions that arrange 4+ arm segments to reach a target.

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  Adaptive and Uniform Tessellation on a Bezier Surface

  (C++)

  Implementation of algorithms to split a curved surface into triangles for rendering.