Looking for a job

Daria User

@dariauser5

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Data professional turning data into practical business solutions with 5+ years experience.

Russian Federation

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What I'm looking for

I’m looking for a role where I can build production AI/LLM pipelines and data analytics that directly improve business decisions—combining Python/FastAPI with SQL/BI to deliver measurable outcomes.

I’m a data professional with 5+ years of experience turning data into practical business solutions. My work blends SQL and analytics with production-grade AI, so teams can move from insights to action quickly.

Most recently, as an AI Engineer for a US-based healthcare operations startup, I built an LLM-powered Python pipeline to extract structured data from unstructured multi-document medical records across ~1,000 patient cases. I also owned end-to-end development of a FastAPI microservice that analyzes claim denial reasons and generates resubmission recommendations, and I evaluated and integrated eligibility verification APIs to enable real-time checks in the RCM platform.

Earlier roles strengthened my analytics foundation: I implemented cohort analysis for retention and key performance metrics at Carely Group, and I standardized marketing/commercial metric logic in dbt to eliminate conflicting dashboard numbers. At Ozon and Beeline, I developed seller/customer dashboards and improved business outcomes—including a seller scoring model that optimized acquisition efficiency by 40% and portfolio optimization based on customer behavior.

Experience

Work history, roles, and key accomplishments

AI Engineer

Perseptex

Nov 2025 - Jul 2026 (8 months)

Built an LLM-powered Python pipeline to extract structured data from unstructured multi-document medical records (about 1,000 patient cases) for validating AI agents in an RCM platform. Developed a FastAPI-based microservice to analyze claim denial reasons and generate resubmission recommendations, and integrated insurance eligibility verification APIs for real-time checks.

LLM Python fastAPI Microservices REST APIs Data Pipelines

Freelance projects

Freelance

Jan 2025 - May 2025 (4 months)

Built an NLP-based module for a Telegram lead-generation bot to help entrepreneurs find potential clients in business chats. Set up retention and LTV analytics to analyze user behavior.

NLP Retention Analytics LTV User Behavior Analytics

Data Analyst

Carely Group

Apr 2022 - Jun 2024 (2 years 2 months)

Implemented cohort analysis to track sales dynamics, retention rates, and key performance metrics, powering daily decision-making across business units. Led marketing budget digitalization and standardized marketing/commercial metric logic in dbt across staging, intermediate, and mart layers.

Cohort Analysis Marketing Analytics Data Integration DBT Data Modeling

Business Analyst

Ozon

Aug 2021 - Apr 2022 (8 months)

Developed a cohort-based seller tracking dashboard to analyze seller retention, engagement, and sales performance trends. Contributed to a seller scoring model that improved seller acquisition efficiency by 40%.

Business Analytics Cohort Analysis Dashboarding Seller Scoring Model

Business Analyst

Beeline (VimpelCom)

Apr 2020 - Jun 2021 (1 year 2 months)

Built dashboards for top management to monitor key weekly indicators for the Beeline bank card. Optimized high-cashback category portfolio based on customer behavior analysis, increasing department revenue.

Business Analytics Customer Behavioral Analysis