# Maryleya User

Maryleya User is a remote worker on Himalayas, Data Scientist (NLP) at Analytical Programming Solutions, based in Serbia.

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

```text
NLP data scientist at Analytical Programming Solutions who built RAG systems and fine-tuned LLMs for enterprise clients.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Serbia |
| Authorized to work in | Serbia |
| Salary expectations | 36k+ EUR |
| Job categories | Data Scientist, NLP Engineer, Machine Learning Engineer |
| Skills | Natural Language Processing, Large Language Models, RAG, Hybrid Retrieval, Information Extraction, Machine Translation, Embedding models, Reranking, LLM Agents, Named Entity Recognition, Synthetic Data Generation, LoRAs, Supervised FineTuning, Chief Product Officer, DPO |
| GitHub | https://github.com/Maryleya |

## About

```text
At Analytical Programming Solutions, I contributed to a production system matching customs declarations to 2,600+ regulatory documents. It used BERT classifiers and multi-stage pre-filtering, while my R&D included synthetic training data and fine-tuned LLM2Vec retrievers.

For Gazprom, I co-developed an on-premise pipeline to flag contradictions between project documentation and regulations. I also built RAG assistants over document sets and designed an extraction prompt for construction scheduling.

On an independent project, I built an LLM support agent for an ad-tech platform, combining hybrid retrieval with tools for SQL queries and log search. I added safeguards including SQL validation and prompt-injection filters.

My first-author paper on retrieval-augmented terminology translation for English–Russian was accepted to the WMT 2026 Research Track. The work explores a multi-domain RAG pipeline and fine-tuned translation models.
```

## Experience

### Data Scientist (NLP)

Analytical Programming Solutions. Sep 2024 - Aug 2026

```text
Developed NLP systems for government and enterprise clients, including RAG pipelines, fine-tuned LLMs, and retrieval systems under on-premise constraints. Contributed to production systems for customs declaration matching and compliance checking.
```

Skills: RAG, LLM-Fine-tuning, BERT, LLM2Vec, Llama-3-8b-LLM, Giga-Embeddings, Mistral-24B, Qwen3-4B-Instruct, LoRAs, SFT, Chief-Product-Officer, Distillation, Quantization, Faiss, BM25, fastAPI, SQL, Python, PyTorch, Hugging-Face, Lang-Chain, LangGraph, LlamaIndex, SpaCy, scikit-learn, LLamacpp, NER, Information-Extraction, Synthetic-Data, LLM-As-Judge

## Education

### HSE University

Master of Arts, Computational Linguistics. 2024 - 2026. Grade: with honors

```text
Pursuing a Master of Arts in Computational Linguistics with honors at HSE University from 2024 to 2026.
```

### HSE University

Bachelor of Arts, Fundamental and Computational Linguistics. 2020 - 2024. Grade: with honors

```text
Completed a Bachelor of Arts in Fundamental and Computational Linguistics with honors at HSE University from 2020 to 2024.
```

## Tech stack

- PostgreSQL
- Python
- Loki
- PyTorch
- scikit-learn
- FastAPI
- SpaCy
- Git
- SQL
- LangChain
- LlamaIndex
- Llama.cpp
- Faiss
- LangGraph
- Sentence Transformers

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

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