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@davidbednarczyk
Senior AI Engineer and Python Developer with extensive experience.
I am a Senior AI Engineer and Python Developer with over a decade of experience in architecting and building sophisticated, data-intensive applications. My passion lies in solving complex challenges through the design and prototyping of practical, AI-driven solutions. I excel at leveraging both commercial and open-source models to create intelligent workflows, real-time data pipelines, and low-latency APIs.
Throughout my career, I have uniquely combined hands-on engineering with a strategic product background, delivering solutions that are not only technically robust but also aligned with business impact. My recent projects include developing a comprehensive real-time trade alert system and architecting a mission-critical data ingestion platform, both of which significantly enhanced performance and user experience.
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Work history, roles, and key accomplishments
Mercor
May 2025 - Present (6 months)
As a contributor to the development of a next-generation AI model for a globally recognized leader in generative AI, I am responsible for evaluating and enhancing its agentic coding capabilities. This involves designing and implementing real-world, multi-turn projects with vague prompts to stress-test the model's performance and generate high-quality data for fine-tuning. Analyze and reconstruct t
Simpler Trading
Sep 2023 - Present (2 years 2 months)
Architected and developed a comprehensive real-time trade alert system, reducing trade alert latency from 12ms to 4ms, significantly enhancing customer happiness and responsiveness. Built end-to-end Python APIs and data pipelines for seamless movement of production data to Snowflake, enabling advanced analytics and BI capabilities.
MBS Source
Sep 2022 - Present (3 years 2 months)
Architected and built a mission-critical data ingestion platform with Python, processing over 100,000 daily files for agency mortgage-backed securities. The platform served as the backbone for a new, revenue-generating analytics product. Developed predictive analytics tools and real-time streaming APIs, boosting platform utilization by 25%.
BNY Mellon | Pershing
Aug 2019 - Present (6 years 3 months)
Co-architected an ML-powered robo-advisor platform by defining the technical specifications, system design for data flows, and model integration requirements. Performed in-depth data analysis using SQL and Python to identify optimization opportunities in product portfolios, providing the quantitative backbone for key strategic decisions.
Stock Up Inc
Apr 2017 - Present (8 years 7 months)
Architected and built the initial prototype of a first-of-its-kind fintech platform for consumption-based investing, developing the core application which allowed users to purchase fractional shares in everyday brands.
Bank Leumi
Jan 2006 - Present (19 years 10 months)
Built advanced electronic trading platforms and liquidity aggregators in Python for global bond markets, automating execution and improving market efficiency. Implemented quantitative models (e.g., Random Forest Classifier) for predictive trading and risk minimization.
Degrees, certifications, and relevant coursework
Bachelor's Degree, Finance
2001 - 2005
Completed a Bachelor's Degree in Finance, gaining foundational knowledge in financial principles and practices. This education provided a strong understanding of economic markets and investment strategies.
Software and tools used professionally
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