Lenny Daume
Check fit
Mondosano GmbH Logo

Mondosano GmbH

Hamburg

Hands-on CTO for Health SaaS

Chief Technology Officer & Head of Product

January 2018 - June 2020
2 years 6 months
Full-time
Product work
Hamburg

Relevance

Why this case matters

This framing makes the decision signal explicit: impact, proof, fit, and AI / delivery relevance for hiring or collaboration.

System impact

Took full product, delivery, and engineering responsibility in a hands-on CTO role from initial setup to a scalable SaaS operation.

AI / delivery relevance

Built the delivery and product foundations that later AI-native workflows depend on to stay reliable.

Hands-on CTO0→1 SaaSProduct + deliveryCI/CD

Proof

0→1

health SaaS built

Full-stack

product to operations

CI/CD

delivery stabilized

Especially relevant for

  • Hiring
  • Lead developer
  • CTO-level
  • Fractional build

Case context

Overview

A health-study SaaS platform had to be built from 0 to 1 in a growing health-tech startup. My responsibility covered product model, team setup, backend, frontend, DevOps, CI/CD, and operations.

The platform included configurable online questionnaires, matching systems, call center integration, and Salesforce synchronization. The work also covered product owner training, agile operating capability, and a delivery foundation for further growth.

Responsibility

Activities

  • Hands-on CTO & Head of Product: Product model, technical direction, and team building
  • Agile leadership: Scrum Master, Product Owner Lead, agile coaching for management
  • Platform development: Configurable online questionnaires, matching systems, call center integration
  • Full-stack engineering: Backend Lead (Java/Scala), Frontend Lead (React/Vue.js), DevOps
  • CI/CD pipeline: Automated deployments, Jenkins, Docker, quality assurance
  • Product management: Roadmap development, product owner training, website relaunch
  • Data integration: Salesforce synchronization, dashboard development, KPI visualization
  • Team development: Employee coaching, skill development, cross-functional collaboration

Operating mode

Methodology

  • Product and engineering as one system: product model, architecture, team setup, delivery, and operations evolved together
  • Hands-on CTO mode: technical direction was not only defined, but carried through backend, frontend, DevOps, and product decisions
  • Built-in quality: CI/CD, automated tests, reviews, and clear deployment paths created a reliable SaaS delivery base
  • Operability by design: monitoring, data flows, integrations, and supportability were brought into product and architecture work early
  • Product owner enablement: roadmap, requirements, feedback, and delivery capability were connected so the team could operate more sustainably after the build-up phase

Technical context

Technology stack

The tools are not the point by themselves. What matters is which system layers had to work together.

8Areas
25Technologies

Backend

7
JavaSpring BootScalaPlay FrameworkAkka StreamsNode.jsJOOQ

Frontend

6
ReactVue.jsJavaScriptTypeScriptHTMLCSS

Databases & Storage

2
MySQLArangoDB

Data & AI

1
Salesforce Integration

CI/CD & Delivery Pipelines

2
JenkinsCI/CD Pipeline

DevOps

3
DockerMonitoringGit

Tools

3
JiraConfluenceSlack

Practices

1
Agile Tools

Next step

If you want to explore similar leverage for hiring, collaboration, or a concrete transformation, this is the right starting point.

Send a short note about the situation you are trying to assess. I reply personally and will be direct about fit.

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