# Efrain Calderon

> Senior Product Designer • Ex-Oscar • Ex-Cityblock

Location: New York City Metropolitan Area, United States
Profile: https://flows.cv/efraincalderon

8 years in health tech at high-growth startups. I thrive there by staying curious and shipping work that actually helps. See it: www.efrain.design

I've spent the last four years at Cityblock designing tools for clinicians, care teams, and patients across the full member journey.

Outside of work:
- I used AI (Claude) to build a music app that's live at: efrain.fm
- I mentor students at Designlab
- Big fan of board games - especially anything by Cole Wehrle

## Work Experience
### UX/UI Mentor @ Designlab
Jan 2024 – Present
Mentoring early-career designers through UX and visual design fundamentals — Figma, responsive design, accessibility, and design thinking.

### Senior Product Designer @ Cityblock Health
Jan 2022 – Jan 2025

### Product Designer @ Cityblock Health
Jan 2021 – Jan 2022

### Senior Analyst, Oscar Appointments @ Oscar Health
Jan 2018 – Jan 2020 | New York, New York
• Subject matter expert in a cross-functional team with product, data, and engineering stakeholders continuously improving patient appointment product. 
• Conducted user interviews and ethnographic research.
• Developed user stories to share with the team.
• Negotiated with hundreds of doctors and physician groups to make appointments available online.

### Coordinator, Partner Program @ Oscar Health
Jan 2017 – Jan 2018 | Greater New York City Area
• Developed relationships with high value physicians and persuaded them to use our appointment tool
• Redesigned outreach process to reduce cycle time by 50%
• Led an external team of 3 photographers and 2 editors to meet contracted deadlines

### Customer Support @ Oscar Health
Jan 2015 – Jan 2017 | Greater New York City Area
• Supported a panel of 5,000 Spanish-speaking customers.
• Audited technical defect escalations from the support department, resolving 63% without escalation to the product department.


## Education
### UX Academy Graduate in UX Academy Foundations Graduate
Designlab

### Bachelor of Arts (B.A.) in Political Science
New Jersey City University


## Contact & Social
- LinkedIn: https://linkedin.com/in/efraincalderon
- Portfolio: https://www.efrain.design
- Portfolio: https://www.efrain.fm

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Source: https://flows.cv/efraincalderon
JSON Resume: https://flows.cv/efraincalderon/resume.json
Last updated: 2026-03-29