Helena S. Ristov

Architecture and Vision

• Designed and developed intelligent dashboards for real-time monitoring, reducing downtime by over 20%.
• Pioneers and guides the development and vision for the GenAI suite of agents helping clients responsibly adopt this technology under data privacy and safety regulations.
• Cloud architecture patterns for deployment of GenAI applications which accelerates search and discovery of information.
• Architect solutions for Fortune 20 clients for system transformation and data platforms to support advancing autonomous vehicle safety and improve brand loyalty.
• Architecture and design of web and mobile applications using VertexAI introducing new search capabilities and multi-modal processing.
• Enterprise platform using iServer for conceptual, logical, data and system architectures.

Machine Learning and AI Development

• Development of technical support, knowledge base organization and GenAI search agents
• Full life cycle software development including UI/UX and wireframes of innovative mobile products.
• Use of Scaled Agile (SaFe) to assist in incorporating architecture runways into sprints with feasibility feedback from engineers, increasing sprint output.
• Development of NLP methods to search and find key topics in defect and ticket logs improving overall software quality.

• Managed a team of data scientists and engineers to create a recommendation engine across a suite of products to help customers improve their credit aligning product with customer profiles.
• Development of approval rate models for cards and loan products assessing likelihood of approval for each visitor, resulting in less rejections and increasing customer satisfaction when paired with appropriate product.
• Introduction of Bureau Profile Segmentation over hundreds of products reducing model development time over half.
• Recalibrated models and reduced model error by over 20%

• One of the founding members of a high frequency algorithmic trading company with annual revenues of 5MM+ and valuation of 50M including the development of C++ execution engines, proprietary strategies, and research environments to support trading
• Developed quantitative strategies and proprietary trading software adhering to the protocols of exchanges like ICE and CME
• Automatic PCA risk reduction strategies monitoring trades across the entire futures yield curve.
• Utilized machine learning algorithms and deep learning methods to identify consolidation patterns across multiple assets classes leading to faster and improved processing of data, and more informed decisions.
• Collaborated in the development of several R packages and functions to handle raw market data and provide daily reports on portfolio risk and performance.
• GPU driven data mining and analysis over millions of tick history.
• Contract work developing the quantitative engine for retirement planning software with several clients.

• Developed LGD, Approval Rate and Risk Models in accordance to policy regulations contributing to the development of the bureau Vantage score.
• Created an interactive R environment to build credit default models reducing processing and development time.
• Profiled clients' customers using clustering techniques providing actionable information for their future marketing campaigns and product offers to gain strategic alignment of ads.

• Responsible for the management of several portfolios on the commercial lending team with the evaluation and impact of credit default model risk score and line assignment strategies

• Developed models to predict credit default and implemented emergency relief strategies to mitigate balance transfer losses during the mortgage crisis with savings of over 20MM

• Conceptualized and developed the mathematical framework of the Voyant Planner, a financial planning software product used to aid firms in advising clients with their investment portfolios.