# Ori Nachassi > Sr. Software Engineer Location: San Diego, California, United States Profile: https://flows.cv/ori ## Work Experience ### Senior Software Engineer - Consumer Platform @ Upstart Jan 2024 – Jan 2026 In my role as Senior Engineer on the Consumer Platform team, I’ve tackled some of the most ambitious and high-impact challenges at our company—frequently working with vague requirements and complex systems to deliver tangible results. Leveraging a diverse tech stack (Ruby on Rails, Kotlin, Next.js, event buses, and queueing systems), I led architectural discussions and designed scalable frameworks that underpin core consumer features across our entire organization. One of my most significant contributions has been championing our cross-sell initiative, which enabled multiple new products—including a new product auto secured personal loan—to be offered through a single intake process. This project demanded close collaboration with engineers and leadership company-wide and ultimately helped drive a nearly 100% increase in earnings over the past year. I also spearheaded the development of our consumer profile system, allowing us to maintain real-time, accurate customer data and streamline user flows—resulting in higher conversion rates thanks to smarter, prefilled applications. Throughout these endeavors, I’ve worked closely with our Head of Product and engineering leaders from every function, aligning on strategic objectives and ensuring our solutions are both innovative and robust. It’s been a rewarding experience to see how tackling large, often ambiguous problems head-on can produce company-wide impact, all while refining the architecture that supports our most critical products. ### Senior Software Engineer - Small Dollar Loans @ Upstart Jan 2022 – Jan 2024 As a founding engineer on the Small Dollar Loans team, I’ve been hands-on from day one—guiding the product from a blank slate to becoming the highest-volume offering in our portfolio. I championed the core architecture that not only powers our day-to-day operations but also sets the stage for rapid innovation and scalability. A key highlight of my work has been the design of our approach to integrating Plaid Assets into our machine learning pipeline. By overseeing how data is pulled, stored, and seamlessly fed into the model, I helped pave the way for deeper insights and smarter decision-making across the organization. Beyond my architectural contributions, I’ve also served as a mentor and team lead, guiding fellow engineers through complex initiatives and ensuring that our solutions remained both robust and user-focused. Reflecting on this journey, what stands out most to me is the sense of ownership and pride that comes from building something that truly makes a difference—an innovative lending solution that has scaled beyond our expectations and continues to shape the future of our company. ### Sr. Software Developer @ Huckleberry Jan 2019 – Jan 2022 | San Francisco, California Huckleberry's mission is to re-design the way small to medium size businesses interact with insurance products--no brokers, no hassles. Being an early member and senior engineer at Huckleberry, my role is to design, architect and implement full stack business solutions from design to release. Developing and maintaining our proprietary underwriting and claims decision and aggregation engine. Our technology stack is built on Node/Postgres/React sitting on AWS. TDD, automated deployment, Github for code reviews, and Sketch/Invision for mockup prototyping. ### eSolutions Developer @ Thermo Fisher Scientific Jan 2017 – Jan 2019 | Greater San Diego Area As a lead developer in the Thermo Fisher’s Digital Innovation Center my role was to work with business leaders to identify problems, architect scalable corporate solutions, and execute a development plan all while mentoring and enabling junior developers. Notable Projects Nexus: Nexus is a business intelligence application that unifies customer data and presents our Sales Team with a suite of automation tools, predictive business models, and customer level product recommendations. Nexus has enabled our sales teams to increase productivity and overachieve their sales goals by millions. The application is hosted on EC2 instances utilizing a Vue.js front end, PHP backend, Aurora RDS Database, Redshift Data Warehouse, and a slew of Python, Node, and Lambda based automations. Alexa Business Skills: Created Alexa Skills that enabled Business Leaders to gather business insights with spoken words or via a decision tree based flashed briefing. Example questions include: “Show me my top performing Product Lines in North America?” or “What is my quarter to date revenue for Bio Production in China?”. The Skill utilizes the AWS Alexa Skill Kit, Alexa Business, and a Node.js Serverless Lambda backend. Recommendation Engine: Developed a recommendation engine that culminated end user purchase history, publication, web browsing, and abandoned cart data to create user level product recommendations. Awards eSolutions Innovation Recognition Award, 2018 Q2 ### Freelance Web Developer @ Bracelet Life Jan 2017 – Jan 2017 | Greater San Diego Area Leveraging the power of WooCommerce and Wordpress I was able to create an online eCommerce site for BraceletLife in less than one day! Worked closely with the marketing director to increase customer retention and integrate site tools to build their email lists. ( https://www.braceletlife.com ) ### Freelance Web Developer (Lead) @ We'd Deliver Jan 2017 – Jan 2017 | Greater San Diego Area Created a custom online ecommerce and delivery platform that allowed the business to manage their online store, receive orders, and dispatch them to the appropriate drivers. The application was developed on a Rails framework integrating Google Maps API and Action Cable for live ordering. The program leverages JavaScript and JavaScript frameworks (jQuery and Ajax) to enhance the user experience, as well as CSS3, SASS, and Bootstrap for design. ( http://weddeliver.herokuapp.com ) ### Project Manager @ eLending & eCapital Jan 2016 – Jan 2017 | Greater San Diego Area Collaborated with a team of developers to create an online lending site with an advanced CRM platform geared towards Real Estate and Luxury Assets loans. ( https://www.elendinginc.com & https://www.ecapitalinc.com ) Developed custom Financial Modeling software to manage our current deals and ongoing portfolios. The application utilizes a Rails backend, and a JavaScript heavy front end. ### Student @ Dev Bootcamp Jan 2016 – Jan 2016 | Greater San Diego Area Undertook an intensive web development course that focused on key CS concepts with an emphasis on the following languages and frame works: Ruby, Rails, HTML5, CSS3, Javascript (JQuery, AJAX, React.js), and Git, as well as key concepts like agile development, engineering empathy, and rapid prototyping. Developed uTV, a web based application that combines YouTube’s API with our learning algorithm to provide you a more personalized watching experience by learning what you like and don’t like. Written in React.js, with a Rails back-end. ( http://utv.herokuapp.com ) ### Financial Analyst @ ABP Capital Jan 2014 – Jan 2016 | Greater San Diego Area ### Promotions and Marketing Manager @ NOX Jan 2012 – Jan 2014 ## Education ### Dev Bootcamp Jan 2016 – Jan 2017 ### Reichman University Jan 2011 – Jan 2014 ## Contact & Social - LinkedIn: https://linkedin.com/in/ori-nachassi --- Source: https://flows.cv/ori JSON Resume: https://flows.cv/ori/resume.json Last updated: 2026-03-23