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Anna RyzhenkoAR
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Anna Ryzhenko

@annaryzhenko

AI researcher at JetBrains who developed a test-time training method that improved out-of-distribution accuracy by up to 60 percentage points.

Germany
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At JetBrains, I investigated transformer length generalization on arithmetic reasoning tasks with unseen problem sizes. I developed a Gradient-Aligned Test-Time Training method and evaluated four auxiliary adaptation objectives.

My experiments examined batch sizes and adaptation steps to find a resource-efficient configuration that prevented redundant test-time computations. The method improved exact-match accuracy by approximately 30 percentage points on average and up to 60 at peak across out-of-distribution settings.

At Constructor Tech, I built a multimodal RAG pipeline with FAISS and e5-large-v2 to generate quizzes from course materials. I also developed topic-driven retrieval to optimize API costs and integrated diagrams, tables, and slide snapshots into generation pipelines.

As a Configuration Engineer at Combined Ratio Solutions, I developed insurance policy management and workflow automation logic, and designed dynamic document templates. In a code summarization project, I evaluated language models with BLEU, METEOR, ROUGE-L, and BERTScore, and contributed to a Streamlit demonstration interface.

Experience

Work history, roles, and key accomplishments

CT

AI Intern

Constructor Tech

Jul 2025 - Sep 2025 (2 months)

Built a multimodal RAG pipeline using FAISS and e5-large-v2 to generate quizzes from 15M+ characters of course materials. Optimized API costs by developing a topic-driven retrieval strategy and designed an LLM-as-a-Judge framework for evaluation.

Education

Degrees, certifications, and relevant coursework

Constructor University logoCU

Constructor University

Master of Science, Advanced Software Technology

2023 -

Pursuing a Master of Science in Advanced Software Technology in collaboration with JetBrains, with an expected graduation in May 2026.

SI

Saint Petersburg State University of Aerospace Instrumentation

Bachelor of Science, Applied Mathematics and Computer Science

2019 - 2023

Earned a Bachelor of Science in Applied Mathematics and Computer Science from 2019 to 2023.

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