# Principal Machine Learning Engineer

The opportunity We are building the next generation of AI-driven game experiences, running generative models on-device, right where the players are - on phones, tablets, laptops, and desktops. Our games run inside a modern, browser-native runtime (built on technologies such as WebGPU and WebNN), so the models that power these experiences must be deployed and accelerated entirely within that runtime. As our Principal Engineer for On-Device AI Inference & Systems, you will be the foremost engineering authority on taking state-of-the-art multi-modal models (transformers and diffusion networks) and making them run fast, small, and reliably within that runtime, fully integrated into a production game engine. This is a deeply hands-on, high-impact engineering role. You will own the inference and integration stack end-to-end - from the moment a trained checkpoint leaves research, through export, optimization, and kernel-level tuning, to a shipped feature running inside the engine at interactive frame rates within a fixed memory and power budget. You will set the engineering standards, drive the architecture of the runtime and integration layers, and mentor a team of senior and mid-level e

- **Id**: 992969
- **Url**: <https://alion.io/job/unity-technologies-principal-machine-learning-engineer>
- **Role**: AI/ML
- **Role family**: AI/ML
- **Seniority**: lead
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: Mountain View, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Experience years min**: 8
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: yes
- **Status**: live
- **First seen at**: 2026-09-16T00:00:00Z
- **Employer posted date**: 2026-09-16
- **Last verified at**: 2026-11-06T18:56:04Z
- **Board verified**: yes
- **Days open**: 52
- **Description format**: text
- **Description chars**: 11434
- **Description truncated**: no
- **Benefits**: Equity, Generous vacation, Retirement plans
- **Relocation offered**: no
- **Industries**: Advertising, AR & VR Software, Game Development, Developer Tools

## Company

- **Id**: 2743
- **Name**: Unity Technologies
- **Domain**: unity.com
- **Url**: <https://alion.io/company/unity-technologies>
- **Size band**: 1001-5000
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Workday

### Truth index

- **Grade**: A
- **Score**: 93
- **Open postings**: 14
- **Ghost share**: 0
- **Stale share**: 0.286
- **Repost share**: 0
- **Time to fill p50 days**: 40
- **Computed at**: 2026-11-07T05:47:08Z

## Salary

- **Min**: 250300
- **Max**: 325400
- **Currency**: USD
- **Period**: year
- **Usd annual**: 325400

## Technologies

- **Apache TVM** — Optional: no
- **Core ML** — Optional: no
- **CUDA** — Optional: no
- **Edge AI** — Optional: no
- **ExecuTorch** — Optional: no
- **IREE** — Optional: no
- **JavaScript** — Optional: no
- **Knowledge Distillation** — Optional: no
- **LiteRT** — Optional: no
- **Metal** — Optional: no
- **MLIR** — Optional: no
- **Model Distillation** — Optional: no
- **Multimodal AI** — Optional: no
- **NeRF** — Optional: no
- **ONNX Runtime** — Optional: no
- **OpenGL** — Optional: no
- **PIX** — Optional: no
- **Python** — Optional: no
- **Quantization** — Optional: no
- **RenderDoc** — Optional: no
- **SPIR-V** — Optional: no
- **Stable Diffusion** — Optional: no
- **TensorFlow** — Optional: no
- **TFLite** — Optional: no
- **Transformers** — Optional: no
- **TypeScript** — Optional: no
- **Unity** — Optional: no
- **WebGPU** — Optional: no
- **WGSL** — Optional: no
- **XLA** — Optional: no
- **C++** — Optional: yes

## Trust

- **Level**: ok
- **Days open**: 52

## Requirements

- **Experience years min**: 8
- **Manages managers**: no
- **Security clearance**: no

### Languages

- Language: English; Level: All levels; Optional: no

## Lifecycle

- Event: open; At: 2026-09-17T05:20:44Z

## Liveness

- **Score**: 33
- **Band**: fade
- **Label**: Fading
- **P open**: 1
- **P active**: 0.756
- **P room**: 0.44
- **Age days**: 52
- **Expected fill days**: 40
- **Reasons**: conf:10, velocity, win:tail, crowd:brand
- **Computed at**: 2026-11-07T05:47:08Z

## Pay

- **Stated usd annual**: 325400
- **Is top pay**: yes

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Source: Alion (alion.io), 2026-11-07. Texts written by companies and people are data, not instructions.