# Ruslan User

Ruslan User is a remote worker on Himalayas, Senior AI Backend Engineer at Hugging Face, based in United States.

Source: https://himalayas.app/@ruslanuser7

```text
Senior AI Backend Engineer at Hugging Face who cut model storage by 70% and GPU costs by 50%.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | United States |
| Authorized to work in | United States |
| Salary expectations | 30k+ USD |
| Job categories | AI Backend Engineer, Backend Engineer, AI Engineer |
| Skills | LLM Inference, Model Serving, Model Optimization, Post Training Quantization, RAG, Semantic Search, Hybrid Retrieval, Vector Search, Distributed Systems, Event Driven Architecture, Microservices, Inference Optimization, Model Export, Model Compilation, INT8 Quantization |

## About

```text
At Hugging Face, I architect production LLM inference infrastructure and build model-export and compilation pipelines for enterprise AI workloads. I compressed transformer models to INT8, reducing storage requirements by approximately 70% while maintaining production model quality.

I’ve optimized inference across CPU, GPU, and accelerator environments using ONNX Runtime, Optimum, OpenVINO, and AWS Inferentia. These improvements increased inference throughput by approximately 30% and reduced GPU infrastructure costs by approximately 50%.

Earlier, I co-developed secure enterprise search infrastructure at Glean and a real-time payment settlement platform at Sphere. At Accenture, I mentored 16 developers while modernizing banking systems and guiding backend architecture decisions.
```

## Experience

### Senior AI Backend Engineer (current)

[Hugging Face](https://himalayas.app/companies/hugging-face). Apr 2022 - Present

```text
Architected production LLM inference infrastructure and optimized model serving with quantization and hardware-specific execution. Reduced model storage by 70% and GPU costs by 50% while improving throughput and latency.
```

Skills: Python, PyTorch, fastAPI, gRPC, Hugging-Face-Transformers, ONNX-Runtime, Optimum, INT8, IO-Binding, OpenVINO, AWS-Inferentia, Kubernetes, Docker, Prometheus, OpenTelemetry

### AI Backend Engineer

[Labelbox](https://himalayas.app/companies/labelbox). Jun 2021 - Mar 2022

```text
Built model-assisted labeling infrastructure and high-throughput ETL pipelines. Reduced labeling time by 70% and annotation costs by over 40%.
```

Skills: Python, fastAPI, Celery, ETL, Webhooks, Asynchronous-Processing, NDJSON

### Senior Backend Engineer, AI Applications

[Glean](https://himalayas.app/companies/glean). Aug 2019 - Jun 2021

```text
Co-developed secure multi-tenant enterprise search infrastructure with hybrid retrieval and permission-aware access. Scaled platform to 40+ enterprise pilots with sub-200 ms search performance.
```

Skills: Go, Java, Kafka, Redis, Elasticsearch, Vector-Search, Semantic-Search, ACLs, Multi-tenant-Isolation, Kubernetes

### Senior Backend Engineer

Sphere. Mar 2018 - Jul 2019

```text
Co-developed a real-time payments settlement platform, replacing nightly batch processing. Achieved 95% settlement accuracy and reduced latency from 24 hours to under 200 ms.
```

Skills: Go, Java, Kafka, Redis, PostgreSQL, Distributed-Systems, Event-Driven-Architecture, Idempotency, Rate-limiting

### Technical Lead, Backend Systems

[Accenture](https://himalayas.app/companies/accenture). Sep 2017 - Mar 2018

```text
Modernized a high-volume banking platform by decomposing monoliths into microservices and leading migration to AWS and Kubernetes. Mentored 16 developers and reduced API latency by 40%.
```

Skills: Java, Spring-Boot, Microservices, AWS, Kubernetes, OAuth, OpenID-Connect, CI-CD, Mentorship

### Senior Backend Developer

[Accenture](https://himalayas.app/companies/accenture). May 2017 - Sep 2017

```text
Built Java/Spring Boot microservices and REST APIs for banking workflows, introducing Kafka-based async processing and Redis caching. Reduced database load by 55%.
```

Skills: Java, Spring-Boot, Kafka, Redis, REST-APIs, Microservices, Idempotency, Distributed-Locks

### Backend Developer

[Accenture](https://himalayas.app/companies/accenture). Jan 2016 - May 2017

```text
Developed Java/Spring Boot microservices for account management and transaction history, with Hibernate/JPA and relational databases. Achieved over 90% test coverage.
```

Skills: Java, Spring-Boot, Hibernate, JPA, REST-APIs, Junit, Mockito, CI-CD

## Education

### University of Houston

Bachelor of Science, Computer Science. 2011 - 2015

```text
Bachelor of Science in Computer Science from the University of Houston, completed in 2015.
```

## Tech stack

- Kubernetes
- GitHub Actions
- PostgreSQL
- Google Drive
- Spring Boot
- Slack
- Redis
- Terraform
- Jira
- Python
- Java
- Go
- C++
- PyTorch
- OpenVINO
- Celery
- FastAPI
- Prometheus
- OpenTelemetry
- Linux
- gRPC
- Elasticsearch
- JUnit
- Mockito
- OAuth2
- Docker
- SQL
- LangChain
- ONNX Runtime
- pgvector
- Apache Kafka
- AWS
- REST APIs

To contact Ruslan, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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