Looking for a job

Roman Prilepskiy

@rprilepskiy

Senior/lead machine learning engineer delivering production AI / ML services, LLM agents, RAG solutions, and post-training with measurable impact.

Russian Federation

Message

What I'm looking for

I’m seeking Senior/Lead ML or LLM/AI Agent roles focused on ML forecasting / LLM integrations, post-training, RAG services and product-impactful AI that accelerates business growth through reliable ML/LLMOps and measurable results.

I’m a Senior/Lead Machine Learning Engineer with 10+ years delivering production ML and LLM systems across telecom, classifieds/marketplace, AI product, and public sector environments, including team leadership up to 8 specialists. I specialize in production LLM agents, RAG and search relevance, and SFT/LoRA inference workflows—backed by strong evaluation and LLMOps quality gates.

I drive end-to-end impact from PoC to production-readiness: I took “AI Sales Manager” from demo to a Google ADK MVP for 100 legal-entity clients, improved commercial RAG assistants by up to +58 p.p. MAP@5, and reduced district revenue forecasting RMSE by 45%. I’m focused on building reliable pipelines with guardrails, structured outputs, observability, and synthetic-dialogue evaluation—so product logic uses explicit business statuses and teams can ship faster with confidence.

Experience

Work history, roles, and key accomplishments

LLM Engineer

Avito

Aug 2025 - Apr 2026 (8 months)

Spearheaded “AI Sales Manager” from PoC/demo to a Google ADK MVP for 100 legal-entity clients, achieving 100% KR1 internal acceptance and offline-testing with 9 potential clients vs 1 planned. Implemented production-readiness for tool/assistant flows (structured outputs, guardrails, observability) and built synthetic-dialogue evaluation on Qwen3-235B, including LoRA-based intent coverage for 5 pro

Google ADK Structured Outputs GuardRails Observability Synthetic Dialogue Evaluation Gradio BFCL Function Calling Evaluation

Lead Machine Learning Engineer

MTS AI

Jan 2020 - Jul 2025 (5 years 6 months)

Led RAG and ML product delivery across enterprise assistants, knowledge search, and recommender/forecasting use cases, improving retrieval quality by up to +58 pp MAP@5 (accepted benchmark quality up to 93%) via preprocessing redesign, hierarchical chunking, and Optuna-driven retriever tuning. Built “Happiness Index” and “Smart Rollout” systems, delivering 1.5–2x higher CLV growth, +9 pp churn pre

RAG ParentDocumentRetriever Optuna Retriever Tuning Retrieval Evaluation (MAP MRR NDCG)fastAPI A B Testing Churn Modeling

Middle Data Scientist

TerraLink

Jan 2019 - Dec 2019 (11 months)

Delivered a telecom IT-service request classifier across 65+ categories, achieving F1=0.818 and turning NLP/text classification into a presales-ready ML solution. Created client-facing packaging and value-proposition materials for upsell and lead generation, and presented the work in a public TerraLink webinar.

Telecom NLP Classification Multi Class Taxonomy Modeling F1 Evaluation data preprocessing Presales ML Solutioning Webinars

Data Scientist

BestFitMe

Aug 2017 - Dec 2018 (1 year 4 months)

Improved a car recommendation engine by 5x and ran 10 web A/B tests with 500 users, driving 3x customer-satisfaction growth and supporting like-prediction modeling (F-score=0.75). Built an NLP article-classification pipeline from 15,000 car articles, reaching 0.8 accuracy and 0.7 F-beta.

Recommendation Systems Performance Optimization Like Prediction

Data Analyst / Team Lead

Data Analysis Center under Moscow IT Department

Jun 2015 - Aug 2017 (2 years 2 months)

Led the eHealth platform benchmark project as team lead, coordinating 8 analysts and analyzing 39 web services/apps to identify 56 key features for Moscow healthcare strategic planning. Delivered ETL/PL/SQL validation for 20M healthcare records and implemented EMIAS/DWH analytics with fuzzy-logic duplicate detection that resolved 280,000 duplicate records.

ETL Pl SQL Healthcare Analytics Fuzzy Logic Duplicate Detection Feature Engineering Reporting And Anomaly Inspection