# Jonathan Arellano > Snowpack Data Location: Los Angeles Metropolitan Area, United States Profile: https://flows.cv/jonathanarellano ## Work Experience ### Machine Learning Engineer @ Snowpack Data Jan 2025 – Present | United States ### Senior Software Engineer @ Atticus Jan 2024 – Jan 2025 ### Director of Engineering @ SimpleCar Jan 2023 – Jan 2024 ### Senior Software Engineer @ Morning Consult Jan 2022 – Jan 2023 ### ML Ops Tech Lead @ Altana AI Jan 2022 – Jan 2022 ### Senior Software Engineer (T24) @ PayPal Jan 2020 – Jan 2022 - Scope, design, prioritize, and implement ML Engineering Project roadmaps - Ensure ML project success through quality EDAs using python and SQL - Developed Dashboard Framework which allows quick visualization of Product and Store recommendations by any Data Scientists and ML Engineers (Node, React, BigQuery) - Developed Product Mapping Engine which maps Merchant products to Honey's global Product Catalog - Developed and deployed online recommender system using CLIP Embeddings (by OpenAI) and Scalable ANN (Hosted embedding search) - Developed Analytic Insights for A/B tests on various recommenders ### Full Stack Software Engineer (SWE2) @ Honey Jan 2018 – Jan 2020 | Los Angeles, California - Designed and Developed "User Feed" and "Explore" pages of the Honey Website (NodeJs & React) - Developed backend data pipelines to power the User Feed and Explore Page (Python, Airflow, Dataflow) - Developed and Deployed End To End ML infrastructure for various initiatives (e.g. Product Categorization). Infrastructure includes: Model Training, Batch Prediction Pipelines, Drift Detection M&A, Feeding signals back into the systems ### Software Engineer @ ZestFinance Jan 2017 – Jan 2018 - Designed and built tools for automated deployment of Machine Learning Models - Designed and built language-agnostic libraries for Automated Model Explainability during Model -Development in both Python and R - Developed a lightweight “Dockerized” development environment for consistent dependency management when working with multiple languages. Included a Python Jupyter notebook and RStudio IDE all accessible from a browser. - Deployed models and explainability tools to multiple types of model hosting platforms such as AWS Sagemaker, Microsoft Machine Learning Server, and Azure Machine Learning Server - Contributed to setting up CI/CD for all company projects using tools such as Jenkins and Circle Ci ### Software Engineer and Co-Founder @ Combinder Jan 2016 – Jan 2017 Developer and Co-Owner At Combinder we convert a simple set of electronic construction close out documents into an easy to PDF Dashboard. This will allow anyone to pick up a tablet and navigate to any of their documents with out ever exiting the PDF Reader itself. A Combinder processed set of close out documents can be used on any platform that supports a PDF Reader. I joined this company in order to add features to Combinder's main software for processing close out documents, but instead ended up redeveloping it from scratch. Technical Specs - C# Windows Forms Application - Debenu PDF Library for PDF Processing - Currently can be optimized for iPad, Laptop, and iPhone Resolutions - Can process 500 PDF document in under 5 minutes. ### Software Engineer @ Trilogy Education Services Jan 2017 – Jan 2017 ### Full Stack Assistant Lecturer @ Trilogy Education Services Jan 2017 – Jan 2017 | UCLA ● Bootcamp topics include: Javascript, HTML/CSS, Node/Express, React and Angular, MySQL and Mongo ● Help students learn development by guiding them through in-class and homework exercises. ● Guide students in successfully completing their milestone projects ● Coordinate between student groups and stakeholders on final projects to ensure success ● Give lectures on specific topics to give better understanding of topics covered ● Create instructional video tutorials as extra resources for students ### Software Engineer @ RX Digital Solutions Jan 2016 – Jan 2017 • Developed a custom Java app to automate repetitive tasks in project workflows • Set up and documented the processes and procedures for new digital services • Created training material, including video tutorials ### Construction Technology Specialist / Software Engineer @ C.W. Driver Companies Jan 2015 – Jan 2016 Developed a Web Application for the Constructability Department • Web app allows for issue tracking between the Project Manager, Consultants, Architect and Client • Coordinated meetings between stakeholders and development team • Developed wireframes, html interface and backend API Upgraded and Developed Various Company Tools • Procurement Log: Excel/VBA workbook which synced with current schedule to calculate material procurement dates • Xcelerator: VBA Application which created a customized formatted report from Navisworks clash detection exports • Navisworks C# Plugin: Added cluster grouping to Navisworks clash detections Created Company Wide Training Documentation/SOPs • Created new company procedures manual, including instructional videos and SOPs • Travelled throughout California to train staff on new company procedures and various construction software Skills Used: Wireframe Development, Meeting Coordination, App Development, Project Management Technologies Utilized: ASP.NET, MVC, C#, SQL, Git, Entity Framework, React.js ### Project Engineer @ C.W. Driver Companies Jan 2015 – Jan 2015 | Manhattan Beach Library Managed construction close out on Manhattan Beach Library. - $26 million project - Coordinated punch walk and compiled punch reports. - Set up digital Close Out Manual - Managed various trades on finishing punch report items - Coordinated all final tests for LEED Certification (LEED Gold) ### Assistant Project Engineer @ C.W. Driver Jan 2014 – Jan 2014 | CSUN Student Housing Project ### Intern @ Vulcan Materials Company Jan 2013 – Jan 2013 | Irwindale Office work, Asphalt design input into Asphalt QC, Lab testing ### Intern @ Parsons Jan 2009 – Jan 2009 ## Education ### Bachelor's Degree in Construction Management in Construction Management California State University, Northridge Jan 2010 – Jan 2014 ### Full Stack Web Development in NodeJs/Express, React, Angular, SQL, Mongo UCLA Extension Jan 2016 ## Contact & Social - LinkedIn: https://linkedin.com/in/jonathan-arellano - GitHub: https://github.com/jarellano01 --- Source: https://flows.cv/jonathanarellano JSON Resume: https://flows.cv/jonathanarellano/resume.json Last updated: 2026-03-22