Lean Digital · Software engineering

We build software for healthcare.

We're a team of engineers and architects in the US and Europe. Most of our work is clinical tools, patient apps and data platforms – built so the people using them don't have to fight the software.

Tell us what you're working on Who we've worked with
  • Proof of concept to production
  • Security from day one
  • US & Europe

What we do

The right solution first. Then we build it.

We start with the problem, not a tech stack. We figure out what will actually work for you, pick the best tools for that specific case, and build it end to end.

  • Proof of concept

    A working prototype to test an idea with real users before you commit to a full build.

  • MVP

    The smallest product worth putting in front of customers – built so it doesn't need a rewrite later.

  • Production systems

    Backend, APIs, web and mobile apps, data pipelines – designed and built by one team.

  • Legacy modernization

    Most teams don't need a rewrite. We improve what's there without stopping operations.

Most of our work is in healthcare – clinical tools, patient portals and mobile apps, data and visualization, telehealth and remote monitoring.

AI-first, without the hype

We use AI every day. It's a tool, not the pitch.

AI is part of how we write software and part of what we ship. We've built LLM features for clients on Anthropic, OpenAI, Google, AWS and Azure – document summarization, data extraction, search, and assistants that work over a client's own data.

But a model is just a component. If a rule, a query or a well-designed form does the job for less, we'll tell you.

  • In your product

    LLM features wired into your own data, with proper access control.

  • Careful with patient data

    We decide up front what a model is allowed to see. Redaction, audit logs and a human in the loop where the stakes call for it.

  • Tested before it ships

    We test AI features against real cases and keep watching them in production. If it doesn't beat the simpler option, it doesn't ship.

  • In how we work

    AI makes us faster. An engineer still reviews every change.

Security & privacy

We don't leave security for later.

In healthcare, a shortcut in the wrong place isn't a bug – it's a breach. So these are defaults on every project, not extras you have to ask for.

  • Sensitive data mapped and kept to a minimum
  • Encryption in transit and at rest
  • Role-based access and audit logs
  • Vendors vetted before they see patient data
  • Code review and dependency scanning on every release
  • Accessibility built in from the first screen

Clients

Who we've worked with

Healthcare

  • Tempus

    AI-driven precision medicine

  • Ventricle Health

    Virtual cardiology care

  • XP Health

    Digital vision care benefits

  • Freenome

    Blood-based early cancer detection

  • Teladoc Health

    Whole-person virtual care

  • Livongo

    Chronic condition management

Beyond healthcare

Most of our work is healthcare, but not all of it. We also build web platforms, mobile apps, APIs and internal tools for other industries.

  • Common Networks

    Wireless home internet

  • Google Fiber

    Fiber internet and TV

  • LinkedIn

    Professional network

  • Yahoo

    Web services and search

  • Trulia

    Real estate marketplace

  • BroadVision

    Enterprise self-service software

How we work

You talk to the people writing the code.

  • No middle layer

    No account managers relaying messages. You work directly with the people building it.

  • UX first

    We figure out how the software is actually used before we design the system.

  • Honest about tradeoffs

    We'll tell you which corners can be cut and which can't.

  • Staffed for the work

    Some projects need a principal architect, some need a mixed team. We put together the team the work calls for.

Kirill Ulyanov

“I've been building software for more than twenty years. Healthcare became our focus not because it's a hot market, but because good engineering there directly improves people's lives.”

Kirill Ulyanov, Founder

What clients say

In their own words.

“There were countless times when we truly would’ve been lost without his expertise and guidance… What I respected most was his undying dedication to delivering the best technical architecture possible.”

Yusang LeeProduct Manager, Amino Apps

“He is a master of the entire web stack. This allows him not only to take on any job given to him, but to be able to suggest more efficient and scalable ways to get the job done, saving time, money and frustration all around.”

Brandon SeltenrichProduct and Technology Leader

“I’m happy to recommend Kirill as I’ve had the pleasure of working with him and his company over many years and many companies. The reason: he’s flexible, reliable, and delivers great work.”

Allan NgCMO, Common Networks · ex Google, Livongo, Yahoo

“I love working with Kirill. He’s professional, knowledgeable and extremely fast. I don’t know how he does it but I can give him comments at 6:30 in the evening and I’ll have updated projects first thing the next morning (if not that night!).”

Tony JohnsonArt Director / Creative Director, Mortar

“He and his team have consistently impressed me with everything from file compression to problem solving interaction. I have used Lean Digital Agency at three companies so far, and I expect to work with him well into the future.”

John DeytoUser Experience for Mobile, Social, Video

“You’ll be impressed by not only the quality of work, but also the attention and responsiveness to feedback, speed of production, and overall expertise by he and his team.”

Jared KozelEVP, Executive Creative Director, Moxie/Publicis

Tell us what you're working on.

A few lines is enough – where the project is today, who uses it, and what's in the way. We'll reply with questions or a rough plan.

info@leandigital.agency