# Ivan Lei

> Software Engineer at Kasheesh | Full Stack Software Engineer specializing in Ruby on Rails, React, and Typescript

Location: New York, New York, United States
Profile: https://flows.cv/ivanlei

As a software engineer, I am passionate about solving complex problems, building innovative solutions, and honing my skills. With four years of experience in the industry, I have a strong foundation in Ruby on Rails, Typescript, React-Redux, and PostgreSQL.

I am skilled in front-end and back-end development, and have a track record of successfully implementing complex technical solutions. I am comfortable working in agile environments and enjoy collaborating to bring projects to fruition.

I am always looking for opportunities to learn and grow as a software engineer. In my free time, I enjoy going to the gym and playing video games!

## Work Experience
### Software Engineer @ Kasheesh
Jan 2023 – Present | New York, New York, United States
• Developed Sardine integration for fraud detection and AML compliance, tracking user risk levels, and providing real-time payment monitoring capabilities on all transactions
• Rebuilt Kasheesh’s onboarding flow end-to-end and integrated Spinwheel’s debt API, cutting manual inputs by 25% and delivering a smoother signup experience for new users
• Built a design system using Rails View Components and TailwindCSS, improving engineer and design alignment. Reduced redundant UI code by 80% and view-related bug tickets by 30%
• Redesigned onboarding sequence to delay Treasury Prime billable calls until user intent was confirmed, reducing wasteful API spend by ~20% for users who abandoned onboarding
• Refactored tests to replace RSpec fixtures with factory-based data, cutting CI runtime by 80% (15 mins → 3 mins), local runtime by 75% (8 mins → 2 mins), and stabilizing multiple flaky specs
• Mentored new engineers during onboarding and proactively supported team members at all levels with technical questions, becoming a go-to resource for implementation guidance

### Software Engineer @ Occupier
Jan 2022 – Jan 2023
Transitioned from an intern to a full-time software engineer position.

• Developed an automated integration between Heroku and Shortcut to push live deployment notifications to product tickets, decreasing manual status update requests by 25%
• Reduced password-related signup friction by engineering a real-time strength validator with debounced input and live rule feedback, streamlining a key step in the onboarding funnel
• Redesigned email notification preferences interface, replacing confusing multi-select frequency controls with an intuitive table-based UI and reducing notification-related support tickets by ~20%

### Software Engineer Intern @ Occupier
Jan 2021 – Jan 2021 | New York, New York, United States
• Developed a component-based design system aligned with MaterialUI standards using Storybook. Used by 6 engineers and 2 designers, establishing consistency with Figma designs
• Led the implementation of a production-ready error screen in collaboration with another intern

### Software Engineer Intern @ Occupier
Jan 2020 – Jan 2020 | New York, New York, United States
Learned a completely new tech stack and workflow. Experienced working within a team environment of various levels (engineering, product, design, and marketing).

• Mentored 2 junior interns on React, Ruby on Rails, and TypeScript implementation while independently delivering features, serving as a technical resource for the intern team
• Contributed directly to web application software to develop new features for a Beta V1 launch


## Education
### Bachelor of Science - BS in Computer Science
City University of New York-College of Staten Island


## Contact & Social
- LinkedIn: https://linkedin.com/in/ivan-lei
- Website: https://www.ivanlei.com

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Source: https://flows.cv/ivanlei
JSON Resume: https://flows.cv/ivanlei/resume.json
Last updated: 2026-03-20