Case 21 · CoVerified · Y Combinator · healthcare data · 2021

How a 6-week SaaS rebuild helped a YC startup reach 200K users.

Outcome 200,000+ users on the rebuilt platform · full SaaS UI redesign + React / React Native frontend shipped in 6 weeks · verified Clutch 5.0 across every category from CEO Dr. Brandon Busuito.
CoVerified. COVID-19 management platform Command Center dashboard with KPI tiles for tests reported, positivity rate, symptoms, and vaccinations, plus stacked bar charts for tests conducted and symptoms reported over time

In March 2020, every American university suddenly needed a pandemic-testing platform. The clock was a semester. The product had to ship.

CoVerified is a Y Combinator-backed healthcare-data middleware company that pivoted hard into COVID-19 management for universities, tests, exposures, symptom check-ins, vaccination tracking, compliance matrices. Founder & CEO Dr. Brandon Busuito had a validated product, a robust Laravel/Lumen + AWS backend, and an engineering team running fast. What he needed was a UI that did the data justice and a frontend team that could ship at the same speed his backend already did. We came in for the redesign and stayed for the build, 100+ screens, React + React Native, live in 6 weeks.

01Validated product, lagging UI. Y Combinator had already said yes. The backend was solid. The interface hadn’t caught up.
02High-volume data, non-technical users. Campus admins, nurses, students. Charts, tables and dense compliance matrices had to read in seconds.
036 weeks, full stack. Design + React/React Native frontend on the existing Laravel/Lumen + AWS backend, a single pod, one Slack channel, one timeline.
★★★★★
Denovers was able to provide a product that is both sleek and tough, which earned them great reviews and added them to over 200,000 users. Having great collaboration and communication and being able to learn quickly made the project a success.
Dr. Brandon Busuito
Dr. Brandon Busuito CEO · CoVerified · YC-portfolio healthcare data platform
Users
200,000+
Live on the rebuilt platform after launch.
Timeline
6 weeks
From kickoff to live SaaS, design + frontend.
Scope
100+ screens
Web platform + mobile app · React / React Native.
Clutch
5.0 / 5.0
Quality · schedule · cost · NPS, all categories.
The story

A YC startup needed a stable, modern SaaS in 6 weeks.

CoVerified builds custom healthcare-data middleware, tools for managing pandemic testing data and telehealth integrations. When the country reopened campuses, they needed a stable platform with modern UI/UX, live in six weeks. They interviewed many firms and considered building in-house. They picked us because the timeline worked, the price made sense, and CEO Muzammil was in the room from day one.

One pod, design and frontend in the same room, backend untouched. We led with data-first admin surfaces (Command Center, Reports & Tracing, Compliance matrix); the React team picked up the upstream components in parallel and wired them straight to the existing Laravel/Lumen APIs; the React Native app shipped the same patient surfaces for students on phones. Slack was the single channel from business leadership to engineering. When scope tightened at the end, the CEO was in the channel within minutes, not the next standup. The platform shipped on schedule and went live to 200,000+ users.

ClientCoVerified · Y Combinator · healthcare-data middleware
RegionUS
EngagementFixed-scope 6-week sprint · 2021
Status200,000+ users live · verified Clutch 5.0
01 · Design

2 to 3 designers on the data-first surfaces.

Command Center, Reports & Tracing, Compliance matrix. KPI tiles sized for one-glance scanning, stacked bar charts that read positivity instantly, status pills (CLEAR / RESTRICTED / PENDING) replacing raw text columns. CoVerified’s navy + teal brand stayed; the layouts stopped fighting the data.

02 · Engineering

React + React Native, in parallel.

The frontend team picked up components as the designs finalised and wired them straight to the existing Laravel/Lumen APIs on AWS. The React Native app shipped the same student-facing surfaces for phones. Willing to transpose into InVision, Adobe XD, or Zeplin whenever the existing team preferred.

Chapter 01

Command Center: pandemic data, readable in one glance.

The admin dashboard had to summarise an entire university’s testing programme in one screen. We led with six KPI tiles. Positive Tests, All Tests, Positivity Rate, Positive Symptoms, All Symptoms, Vaccinated, each with totals to date, then stacked bar charts for Tests Conducted and Symptoms Reported with hover tooltips on every day. Coral for warnings, sage-gold for positive trends, navy for chrome.

app.coverified.io/command-center
CoVerified Command Center dashboard. Admin Portal with navy sidebar, 6 KPI tiles (Positive Tests Reported 150 · All Tests Reported 202 · Positivity Rate 0.12% · Positive Symptoms Reported 126 · All Symptoms Reported 140 · COVID-19 Users Vaccinated 25%), each with totals to date; a Test Conducted stacked bar chart over 10–23 Nov with a Nov 16 17:00–18:00 tooltip showing Test Conducted 2 / Positive Cases 1; a Symptoms Reported chart beneath; CoVerified University filter dropdown top-right
Command Center 6 KPI tiles · stacked bar charts · per-day tooltip One screen, one glance
Chapter 02

Reports & Tracing: every student, every status.

The per-user table had to surface 11 columns, status, symptoms, tests, exposure reports, flu shot, next COVID dose, COVID dose status, without becoming a wall. Status pills (CLEAR, RESTRICTED, PENDING) carry the headline; tags (ON CAMPUS, REMOTE) carry the context; a slide-out filter popover lets admins slice by Status, Status Reason, Registration and Location without leaving the page.

app.coverified.io/reports-tracing
CoVerified Reports & Tracing table. Admin Portal with Coverified University dropdown, search bar, 11-column user list (Name, Status, Status Reason, Symptoms with +/− icons, Test with +/−/?, Exposure Report, Flu Vaccines, Next COVID Dose, COVID Dose Status, Updated) for users tagged ON CAMPUS or REMOTE, status pills CLEAR / RESTRICTED / PENDING, and a per-row action popover with View User Details / Change Status / Notes
Reports & Tracing Status pills · 11-column compliance row · per-row actions Every student, every status
app.coverified.io/reports-tracing?filter=open
CoVerified Reports & Tracing with the filter popover open. Status (Clear / Remote / Restricted), Status Reason (Manual Restrict / Manual Clear / Positive Symptom Isolation / Missing Symptom Report / In Compliance / Immunity Period / Positive Test Isolation / Remote / Testing Non-Compliance), Registration (On Campus / Remote), Location (Completed / Pending), chip-based filtering
Filter popover Status · reason · registration · location Slice without leaving the page
Chapter 03

Appointment sites: schedule, run, repeat.

Each university operates dozens of testing locations, ballrooms, parking lots, backyards. Admins needed to create a site, set availability for it, and open or close it on a tab. We built it as a list-first view (site name, open/close, total appointments, status), with a two-step create flow: site details + weekly availability with an override schedule for one-off dates.

app.coverified.io/appointment-sites
CoVerified Appointment Sites. Admin Portal with navy sidebar, Appointment Sites heading, search bar, Create A New Site teal CTA top-right, and a 5-column table (Site Name, Open Date, Close Date, Total Appointments, Status) listing Ballroom / Parking Ground / Backyard sites with ACTIVATED green pills and DEACTIVATED grey pills
Appointment Sites Searchable list · status pills · Create A New Site CTA One row per location
app.coverified.io/appointment-sites/new
CoVerified Create a New Site form, breadcrumbs Appointment Sites / Create a New Site, fields for Site Name (Ballroom), Site Description, Open Date and Close Date with calendar pickers, Appointments per hour, Slot Per Time, Set Availability section with Set Your Weekly Hours (Sun unavailable, Mon and Tue 09:00 AM – 05:00 PM) and Add Override Schedule listing 27 Jan – 28 Jan 2021, 30 Jan 2021, 25 Feb 2021 as Unavailable
Create a New Site Weekly hours + override schedule · one form, two halves Set up a site in minutes
app.coverified.io/appointments/new
CoVerified Create Appointment form, breadcrumbs Ballroom / Create Appointment, Select Service (Flu Shot), Select Date (MM/DD/YYYY), Select From / To Time (Start Time / End Time), Recurring Appointments toggle on, Select other Week Days (S M T W T F S with S/T/W/T highlighted), Select Type radios (Single Appointment / Batch Appointment with Batch selected)
Create Appointment Service · date · time · recurring schedule · batch Book once, repeat all term
Chapter 04

Compliance matrix & group management.

Beyond COVID, universities track an entire vaccination and document slate. MMR, Varicella, Meningitis, Influenza, Insurance, ID, Health Examination, HIPAA. The matrix view turns that into a single grid: groups down, requirements across, green-check / empty / pending at every intersection. A separate three-pane workflow lets admins add users to groups like College of Business Administration in bulk.

app.coverified.io/compliance-requirements
CoVerified Compliance Requirements matrix. Admin Portal with Coverified University dropdown, 9-column matrix (Group, MMR, Varicella, Meningitis, Influenza, Covid-19, Insurance Card, ID/Drivers License/Passport, Health Examination Report Form, HIPAA Release Form) and Test Group 101 rows with green-check icons at every requirement
Compliance Requirements 9 requirements × groups · green-check matrix Beyond COVID, full vax slate
app.coverified.io/manage-groups/college-of-business
CoVerified Add Users to College of Business Administration, three-pane layout, group list on the left (Full Name, Feest Seth, Mayer Missouri, Hermiston Jensen, Ryan Lance, McLaughlin Deja, Johnston Vaughn), center pane Add Users to College of Business Administration with First Name / Last Name / Email rows of John Doe entries and Cancel / Submit teal CTA, right pane showing Coverified University dropdown, Add User CTA, Registration / Action columns with Completed status
Manage Groups 3-pane add-users workflow · bulk-submit Onboard a college in one screen
app.coverified.io/first-login
CoVerified first-login screen, navy CoVerified logomark with check-mark icon, COVID-19 Management Platform subline, white card with Email, Temporary Password, New Password, Confirm Password fields, teal Submit CTA and Back to Login secondary action
First login CoVerified mark · navy + teal · password reset Brand at the door
Outcome · 200K+ users · 6 weeks · Clutch 5.0

A 6-week SaaS rebuild. 200K users live.

100+ screens, design and React/React Native frontend, on top of CoVerified’s existing Laravel/Lumen + AWS backend. Live in 6 weeks. 200,000+ users. Verified Clutch 5.0 across every category, quality, schedule, cost, and willingness to refer.

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Trial sprint · on us

Building a YC-stage SaaS and need design + frontend on one timeline? Start with a free trial sprint.

One scoped surface, a senior product designer plus a React engineer in your Slack, two video calls a week. The same shape as the CoVerified rebuild. Keep every file even if we don’t continue.

  • Capped at 4 sprints per month
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  • Keep every file we ship
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