# Senior Machine Learning Engineer - Recommendations (Core)

We are looking for a Senior Machine Learning Engineer to join ML Core, the team that builds the shared ML models behind SoundCloud’s recommendations, search and content understanding. New sounds start on SoundCloud. Our job is to connect artists with the communities that will care about their music, and help listeners discover the gems and emerging scenes they’d never find on their own. Recommendations are our largest area, but you’ll work across problems that share the same foundations: representing users, tracks and creators, and ranking them well. We’re also in the middle of modernizing our stack, moving from classical approaches to deep learning on GPU, and you’ll play a big part in that. Key Responsibilities: Design, train and ship models for recommendations (candidate generation, user/item modeling, ranking) and related problems in search and content understanding. Lead the move of key models from classical approaches (e.g., word2vec-style embeddings) to PyTorch-based models trained and served on GPU. Adapt, fine-tune and evaluate open-source embedding and ranking models for our catalog and use cases. Own evaluation end to end: offline metrics, A/B experiments, and making sur

- **Id**: 4023179
- **Url**: <https://alion.io/job/soundcloud-senior-machine-learning-engineer-recommendations-core>
- **Role**: AI/ML
- **Role family**: AI/ML
- **Seniority**: senior
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: Berlin, Germany
- **Countries**: DE
- **Hiring countries total**: 0
- **Experience years min**: 3
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-10T11:03:50Z
- **Employer posted date**: 2026-11-10
- **Last verified at**: 2026-11-10T21:34:02Z
- **Board verified**: yes
- **Days open**: 0
- **Description format**: text
- **Description chars**: 2755
- **Description truncated**: no
- **Relocation offered**: no
- **Industries**: Music Industry, Streaming & OTT Platforms

## Company

- **Id**: 11948
- **Name**: SoundCloud
- **Domain**: soundcloud.com
- **Url**: <https://alion.io/company/soundcloud>
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Greenhouse

### Truth index

- **Grade**: A
- **Score**: 95
- **Open postings**: 4
- **Ghost share**: 0
- **Stale share**: 0
- **Repost share**: 0
- **Time to fill p50 days**: 104
- **Computed at**: 2026-11-10T06:52:35Z

## Technologies

- **Embeddings** — Optional: no
- **GCP** — Optional: no
- **Google BigQuery** — Optional: no
- **Machine Learning** — Optional: no
- **Python** — Optional: no
- **PyTorch** — Optional: no
- **Spark** — Optional: no
- **Fine-tuning** — Optional: yes

## Trust

- **Level**: ok
- **Days open**: 0

## Requirements

- **Experience years min**: 3
- **Manages managers**: no
- **Security clearance**: no

## Lifecycle

- Event: open; At: 2026-11-10T16:00:20Z

## Liveness

- **Score**: 86
- **Band**: hot
- **Label**: Hiring now
- **P open**: 1
- **P active**: 0.86
- **P room**: 1
- **Age days**: 0
- **Expected fill days**: 104
- **Reasons**: conf:4, win:early
- **Computed at**: 2026-11-11T01:56:06Z

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