# Rennah (Xinying) Weng > Senior Software Engineer @ Lyft Location: San Francisco Bay Area, United States Profile: https://flows.cv/rennah 🙋‍♀️ A highly motivated first-gen, low-income woman passionate about building social impact products, increasing accessibility for under-served communities that are often overlooked by industry, and representing diversity and inclusion. I believe in people-centric, mission-first mentality. I love coffee chats, feel free to reach out! 😊 ## Work Experience ### Senior Software Engineer @ Lyft Jan 2026 – Present | San Francisco Bay Area ### Software Engineer II @ Lyft Jan 2023 – Jan 2026 | San Francisco Bay Area ### Software Engineer @ Lyft Jan 2022 – Jan 2023 | San Francisco, California, United States Making LyftMap ### Software Engineer Intern @ Lyft Jan 2021 – Jan 2021 | San Francisco, California, United States ### Head of Engineering @ Dorm Room Fund Jan 2020 – Jan 2021 Venture fund powered by First Round Capital. Supporting 300+ portfolio companies, created $3B+ in value. • 1st Female head of engineering, defining tech vision & strategy for the entire company. • Led rebrand efforts and full deployment of website and blog from scratch. ### Software Development Engineer Intern @ Amazon Jan 2021 – Jan 2021 | Seattle, Washington, United States • Contributed to Amazon Astro project. Astro is Amazon's new household robot for home monitoring, with Alexa voice AI. • Worked on Astro's computer vision model's data management system to manage the lifecycle of data annotation and improve the accuracy of ML training. Read more about Astro: https://www.amazon.com/Introducing-Amazon-Astro/dp/B078NSDFSB ### Data Science Fellow @ Correlation One Jan 2020 – Jan 2021 Women’s Summit, DS4A Empowerment Program • Built a healthcare recommender web app to increase accessibility of medical resources and hospital data, allowing patients to make informed decisions based on their unique needs. ### Software Engineer Intern @ Open Water Accelerator Jan 2020 – Jan 2020 | Menlo Park, California, United States • Accelerated products for pre-seed startups in establishing server-client web application, definition and maintenance of database, integration with front-end elements, and beta testing with metrics. • Oversaw pre-seed startups’ product line life cycle and ran beta product tests with metrics to anticipate any problems. • Analyzed users' needs and evaluated product fit & market competition to improve customer experience and drive product growth. ### Software Engineer Intern @ Fidelity Investments Jan 2020 – Jan 2020 | Merrimack, New Hampshire, United States Client Care Platforms Team - Full Stack • Deployed a full-stack application for Salesforce Team that leverages a faster and more accurate communication with customers, built with Microsoft Office APIs in HTML, CSS and JavaScript for front-end, and NodeJS, Express, and Java for back-end. • Implemented REST API server to consume all data about specific customers and services from Fidelity's platform database using the Platform SDKs provided. • Developed automation programs that create JIRA issues using Java Apache POI and Spring HTTP in Maven build scripts. • Saved hours of time for Salesforce associates and increased revenue for the company. ### Computer Science Instructor @ Juni Learning Jan 2020 – Jan 2020 | Remote ### Technical Project Manager @ Columbia Social Entrepreneurship Group Jan 2019 – Jan 2020 | Greater New York City Area We deliver impactful web app development and data science services to our partner social impact organizations! Check out our website at www.columbiaseg.org Project since Fall 2019: • Analyzed over 130k temperature data points and created regression models to raise the awareness of inadequate heating issues in NYC apartments. • Continued improving our complex temperature sensor, Heat Seek, in sending automatic and accountable heating violation complaints government agency 311. • Partnered with Brooklyn Borough President Eric Adams and successfully launched Heat Seek as legislation passed across New York City. ### Engineering Essentials Program Fellow @ Goldman Sachs Jan 2020 – Jan 2020 | New York, New York, United States • Selected to participate in software engineering skills-building workshops, interactive case studies, and networking sessions with Goldman professionals. • Analyzed and modeled datasets scraped from GS Marquee Platform to accelerate research into the COVID-19 pandemic and support the global response to coronavirus. Takeaways: - Engineering works so well with finance firms to positively impact the world, especially given the Big Data finance companies have. - Technology is essential in financial services to give customers the most innovative and accessible user experience. ### Virtual Insight Series Participant @ Goldman Sachs Jan 2020 – Jan 2020 | New York, New York, United States • Selected to get an introduction to the financial world through hands-on experience, key insights into the Goldman Sachs culture, and networking opportunities with professionals at the firm. • Worked closely with a group of peers to grow my technical and soft skills. ### IT Support Engineer @ Columbia Technology Ventures Jan 2019 – Jan 2020 | New York, New York, United States • Administered and maintained Operating Systems, computer networks, and system hardware and software. • Proactively identify and deploy technical solutions to facilitate a secure and productive computing environment campus-wide. ### Engineering Intern @ Con Edison Jan 2017 – Jan 2018 | Brooklyn, New York, United States • Saved the company $6 million by enhancing software’s ability to eliminate parking schedule conflicts and unnecessary field crew runs. • Optimized system processes and information accuracy by running software tests for company’s asset data. • Monitored mandatory facility inspections in advancing safety measures of electrical structures in NYC. ## Education ### Bachelor of Science - BS in Computer Science, Minor in Entrepreneurship Columbia University ### Android Development & Cybersecurity CodePath ### Advanced Regents Diploma in BTHS Major Diploma, Mechatronics and Robotics Engineering Brooklyn Technical High School ### Computer Science Girls Who Code ## Contact & Social - LinkedIn: https://linkedin.com/in/rennahweng - GitHub: https://github.com/rennahweng --- Source: https://flows.cv/rennah JSON Resume: https://flows.cv/rennah/resume.json Last updated: 2026-03-29