billion

Billion To One

A US-based healthcare company that provides genetic testing to detect and measure disease at the molecular level.
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billion
Y Combinator
Fueled by Y Combinator
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Invested by Adams Street
295M
Raised in funding
200+
Employees
How we started

Billion To One reached us in 2020 to build a web portal for communication and data transfer. As a genetic testing company, Billion To One works with multiple clinics across the US and requires a high level of security and precision in data management — and they engaged us to ensure it.

In the first stage, we focused on 3 core objectives:
  • Automate the communication between laboratories and the Billion To One team
  • Reduce document-related manual work and human error
  • Streamline internal medical data management
$48.5M
additional capital raise
After the project was completed
Location
United States
Industry
Healthcare
Services
Software Product Development
Partnership
Since 2020
Team size
5 Engineers

Why Billion To One chose us

We started our cooperation on October 2020, when Billion To One was already backed by Y Combinator and had a working platform, to bring data management to the next level.

While introducing an innovative approach to genetic testing, Billion To One experienced issues with the speed of document management and error rates, and needed a vendor able to dig into the Django-based platform and transform their manual process into a streamlined digital flow.

Before starting our cooperation with Billion To One, we’ve already helped US healthcare companies like Haystack Intelligence and Surfacide, and had vast experience dealing with the US market specifics. To help Billion To One efficiently, we also obtained HIPAA certifications for every team member.

Since launching its first tests in 2020, BillionToOne has delivered advanced molecular diagnostics to 500,000+ patients.

By early 2025, the company surpassed 1 million UNITY prenatal tests conducted within five years.

Its annual UNITY test run-rate climbed above 500,000 tests per year in 2024, marking exponential operational growth.

By the end of 2024, UNITY held roughly 15% of the U.S. prenatal screening market, while Northstar oncology panels processed over 3,000 tests in Q4 2024 alone.

BillionToOne’s payer network expanded to cover 225 million+ insured lives across the United States.

The company has raised nearly $400 million in total funding as of late 2024, driving continued expansion in both prenatal and oncology diagnostics.

In 2024, BillionToOne reached $153 million in annual revenue, up from $72 million in 2023 — a 112% year-over-year increase — and achieved a 167% revenue CAGR between 2021 and 2024.

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Molo

Billion To One chose us due to our technical expertise, matching cultural values, and background in the US healthcare market.

They were really good at building Django applications, and our tech stack was Django-based. We loved the team we met, really good and professional. The size of the company and cultural values was a good match, we did not want to work with too large a company.’

5.0
Vivek Gandhi

Vivek Gandhi

Director of Product Management, Billion To One

Fueling the transformation
We entered the project to accelerate Billion To One’s digital transformation and brought a combo of product design and development expertise.

From user interviews and mockups to architecture solutions and full management of the build-out of the project, we guided our partners through the transformation in a predictable, transparent manner.

Together, we’ve rapidly cleaned up the road for Billion To One to grow, get more investments, and serve more customers across the United States.

Partners from 2020 to 2021
Services Delivered
Product Design , Software Architecture , Web Development , Quality Assurance , Support And Maintenance , Cloud & DevOps
team Composition
1 Backend engineers, 1 Frontend engineers, 1 QA engineers, 1 Product designer, 1 Project manager
team Leaders
Sergey Kubrak , Soner Ayberk
Technology Stack
logo logo logo logo logo logo logo logo logo logo logo logo logo
The Discovery Phase

Together with Billion To One, we’ve conducted a 3-week discovery phase before the development to gather documentation, establish clear requirements and expectation, identify user needs, prioritize features, build a roadmap, and shape the project scope.

The dedicated discovery phase allowed us to optimize development costs and timelines, align the project vision, and develop a number of artifacts to empower our combined team along the entire digital transformation journey.

Discovery phase outcomes
  • Flow diagram
  • Wireframes
  • User personas
  • Data flow diagrams
  • Customer Journey Map
  • Architecture diagram
  • Story map
solutions

What helps Billion To One to innovate the industry.

Streamlined and error-free documentation management

Billion To One cooperates with multiple clinics across the US and provides advanced genetic testing solutions, focusing mainly on prenatal screening and liquid biopsy. Before the transformation, the process was slowed down by dealing with lots of handwritten data, missing info, errors, and the need to communicate on testing status manually.

To accelerate the flow and eliminate errors in communication with clinics, we’ve designed an application that processes data from Billion To One’s Salesforce, and introduces easy-to-use interfaces to search for, filter, process, and manage the information.

With this application, we’ve built a solid foundation for Billion To One to implement features that:

  • Accelerate the data processing
  • Automate the testing status communication
  • Introduce a scalable framework for cooperation with clinics
  • Store and process the data in one place

 

Billion To One innovates genetic testing, and we were proud to empower them. With the solutions we designed, Billion To One can access, process, and manage internal and external data faster and more efficiently.
Iryna Kovbasa

Iryna Kovbasa

Project Manager

Learn more about our healthcare industry expertise
Contact us
testimonials

The project was delivered on time and looked fantastic. We had been working closely together so we had come to know what to expect - DjangoStars is a solid team that can be relied upon to build a beautiful and robust tech solution to solve your problems.

They are also extremely professional - the work is transparent, there is constant feedback and iterative improvements, and they will make sure you are satisfied with the solution they propose.

5.0
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