Data engineer and AI engineer currently contributing to open source AI libraries like langchain, OpenDevin, and building a langchain app (github.com/JeffKatzy/interfamily-agent) deployed at internalfamilysystems.ai.Currently working on RAG and agentic pipelines as an open source contributor to All Hands AI’s coding agent called OpenDevin, which automates software engineering. Also, open source contributor to Lanchain, focusing on its integration with the Neo4J database. Coding background comes from strong object oriented, tdd approach, having previously worked on one of the largest ruby on rails codebases at Case Commons. Azure DS Associate Certified.Programming Languages:‣ Python, Javascript/Typescript, Ruby, SQL* Libraries Flask, React, Redux, NextJS* Cloud primarily AWS and Azure.Databases and Data Warehousing:‣ RDS, Snowflake, Spark, DuckDB‣ Advanced in OLTP/OLAP Data Warehousing database design patterns, having built Data Marts in cloud database softwares including Snowflake, and AWS’s RDS‣ Developed data lakes with combination of AWS S3, Glue, Athena along with AWS Wrangler/Boto3‣ Data analysis and visualization using Pandas, NumPy, Matplotlib, Streamlit and tableau‣ Analytics engineering pipelines with DBT, Fivetran, Prefect, DuckDB‣ Experienced developing robust observability systems and data quality rules for optimization of MLmodelsCloud Platforms:‣ Extensive experience building data pipelines (ETL/ELT) and cloud orchestration with Airflow/Prefect, AWS Lambda / Eventbridge, Athena‣ Experienced in using Infrastructure as Code (IAC) tools like Boto3, Docker, and Terraform deployed on AWS ECRBackend Development:‣ Experienced with modern backend frameworks including FastAPI and Flask for Python-based APIdevelopment‣ Experience with DevOps platform architecting using Github Actions, Docker, and Terraform for CI/CD (Github Actions) and app deployment.* Previously implemented end to end search for child welfare platform (ElasticSearch/Postgres, React, Ruby)
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Machine Learning EngineerAppfolio Dec 2024 - PresentSanta Barbara, California, Us -
Open Source ContributorAll Hands Ai Apr 2024 - Dec 2024Contributor to the OpenDevin agent that uses AI agent pipelines to write code, upgrading the Agent’s ability to perform/respond to linting. The feature involved 450+ lines of Python, including unit and integration tests.Upgraded linter to be multilingual and configurable, integrating the tree-sitter library, improved linter performance, and extracted details about errors, to feed to the coding agent for retries. Increased accuracy in SWEBench evaluation. -
Open Source ContributorLangchain Apr 2024 - Dec 2024Contributor to the Langchain open source repository, refactoring the Langchain’s integration with Perplexity AI. Debugged and refactored Langchain’s integration with Neo4J, including integrations with HuggingFace embeddings, and using multiple embedding types across different Neo4J indices. -
Data EngineerGovcompete May 2022 - Dec 2024Data engineer for the startup that provides federal contractors with search interface/filtering of government contracts. Developed data pipeline and ML pipelines. -
Data EngineerJigsaw Labs Jan 2020 - May 2022New York, UsData engineer consultant to company partners in database design, and RAG pipelines, cloud based data pipelines. Career course instructor and curriculum writer covering backend web development (Python/Flask), devops (AWS, Docker, K8s, Terraform, CI/CD), and data pipelines (PySpark, Redshift, Airflow, DBT), RAG pipelines (Langchain, LlamaIndex).Launched a six month machine learning career course, resulting in students placing in top 10% of Kaggle competitions. -
Adjunct ProfessorYeshiva University May 2019 - Dec 2019Manhattan, Ny, UsTaught and developed the first data science course for Yeshiva University's masters in data analytics program. Topics included ETL, Linear Regression, Linear Algebra, Feature Engineering, Feature Selection, and Random Forests. -
Lead Data Science Instructor, Lead Curriculum WriterFlatiron School Nov 2017 - Dec 2018New York, New York, UsDeveloped Flatiron School's data science immersive course from scratch -- from pitching data science as a new business line to leadership, meeting with industry experts to align course with market needs, to hiring an awesome team of curriculum writers and instructors, working with the product and marketing teams to structure an online and in person launch, and writing the course syllabus, introductory curriculum, and leading the first 15 week immersive course. Seven of nine job seeking students received job offers within two months of graduating from the program. -
Lead Web Instructor/Lead Web Curriculum WriterFlatiron School May 2015 - Nov 2017New York, New York, UsOne of three lead instructors at the time of hiring, I have taught over two hundred students Ruby on Rails and JavaScript. During tenure, worked with team to grow the Flatiron's JavaScript instruction from one to six weeks, and spearheaded the teaching of React and Redux in June 2016. Graduates have gone on to work at LinkedIn, Microsoft, and BlackRock. In 2017, was Flatiron School's lead curriculum writer, where was sole curriculum writer on Redux, Algorithms, Introduction to JavaScript.
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Software EngineerCase Commons Jun 2013 - Jun 2015New York, UsFullstack software engineer for Case Commons where worked on development of Casebook, the first family-centric, Web 2.0 child welfare tool, in partnership with Pivotal Labs, leaders in Ruby on Rails consultancy and start-up development.Agile development following extreme programming practices: TDD, pair programming, short iterations, continuous integration. Rails 3, RSpec, Cucumber, Git, JavaScript, PostgreSQL, Resque. Strong collaboration with the Product, QA and UX teams. -
AssociateCovington & Burling Oct 2011 - Jan 2013Washington, D.C., UsCorporate and Litigation associate for the law firm. Represented Facebook in a litigation matter where investigated company practices and strategies to ensure compliance with federal rules and regulations. Represented the independent board of directors at Bain Capital in an investigation related to its purchase of clear channel radio. Represented Sandgridge in connection with a merger and investigation. Represented Goodyear Tires in connection with SEC disclosures. -
Data Analyst, Systems And PlanningEko India Financial Services Private Limited Jan 2011 - May 2011New Delhi, Delhi, InWorked for the mobile banking startup company to formulate and execute strategies to optimize performance at the customer, salesperson, and management level. o With team, devised plans for determining and targeting most profitable customers, discovering best practices among sales force, and curbing employee fraud. Drafted the sales force contract governing Eko’s 1,000+ agents. o With team, selected new information technology systems, formulated outsourcing plan, led expansion plan. -
Summer AssociateCovington & Burling May 2010 - Jul 2010Washington, D.C., UsConducted legal research and analysis, wrote memos, and participated in meetings and negotiations for 7+ clients. o Researched and drafted documents for intellectual property disputes, including trademark and copyright issues.o Wrote memorandum regarding the appeal of a bankruptcy case, which predicted the actions of the various creditors with a stake in the debtor's assets, and determined the best arguments for our client.
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Marketing And Innovation ConsultantAxa Equitable Jul 2008 - Jun 2009New York, Ny, UsDevised and presented to senior management plans on new marketing programs, products, and strategic initiatives. o Assisted with strategy and business for moving to online sales and developed model for predicting sales rates. o Assisted in and developed a company-wide innovation awards program. Researched new customer segments and recommended specific segments to target, as well as proposed marketing strategy for customer acquisition.
Jeff Katz Education Details
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Columbia Law SchoolLaw -
Duke UniversityEconomics
Frequently Asked Questions about Jeff Katz
What company does Jeff Katz work for?
Jeff Katz works for Appfolio
What is Jeff Katz's role at the current company?
Jeff Katz's current role is Data Engineer | Data Science.
What schools did Jeff Katz attend?
Jeff Katz attended Columbia Law School, Duke University.
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