Daume.dev ⚡️
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CTO by role, Craftsman by heart. As a progressive leader I connect technical excellence with servant leadership. I've scaled 100+ devs remotely - without middle management, with flow metrics over velocity theatre.

What sets me apart: I don't measure individual devs, but team flow. I don't plan for certainty, but for clarity. I don't build features - I design impact. My principles: Product thinking. Outcomes over output. Shared ownership over handovers. Continuous delivery with small batches. Definition of Ready for real flow.

Craftsman in Action

Chief Technology Officer (Hands-on)

since 07/2025 (Livable Places GmbH)

Hands-on CTO at an AI-first startup. Building features myself - from Nuxt/Vue frontends to FastAPI/PostGIS & Terraform+Docker. Focus: livable places, amenities & social environment (S in ESG), LLM-powered analytics & rapid iteration. Scaling teams with my experience as a Scaling Leader.

Full-time

Chief Technology Officer

since 09/2023 - 06/2025 (WPS MANAGEMENT GMBH // wescale)

As CTO, drove technological progress, scaled teams with agility & delivered innovative solutions to achieve business goals.

Full-time

Freelance Fullstack Developer & Consultant

since 06/2023 - 12/2023 (LGE Energy Berlin GmbH // Zenstrom)

Consultancy & implementation of a customized website & portal.

Freelance

Fractional CTO

since 05/2023 - 11/2023 (QYRAGY GmbH)

Supported Smartjobr as freelance fractional CTO.

Freelance

Smart SaaS

07/2020 - 04/2023 (QYRAGY GmbH)

As CTO & Chief Product Owner, developed matching algorithms, integrated AI-first approaches & scaled the platform.

Full-time

Consultant / Software Developer

07/2020 - 11/2020 (Mondosano GmbH)

Supported Mondosano as a freelancer.

Freelance

Full IT responsibility

01/2018 - 06/2020 (Mondosano GmbH)

Greenfield CTO: full responsibility for IT strategy, architecture & delivery, including building a development team in healthcare.

Full-time

SEO Déjà-vu

09/2016 - 01/2018 (SISTRIX GmbH)

Processed even larger data sets than at SEOlytics. Focus: BigData pipelines & scaling.

Full-time

Traditions

04/2016 - 08/2016 (USU AG | Business Solutions)

Balanced between project modernization as project manager and duties as team lead.

Full-time

Optimize, optimize

09/2013 - 03/2016 (SEOlytics GmbH)

Optimized BigData SEO platform in a scalable environment. Later, as Scrum Master & Head of Development, drove agile transformation.

Full-time

A brief visit to Axel Springer

05/2013 - 10/2013 (Immonet GmbH // Axel Springer AG)

At Immmonet, gained first-hand experience of corporate structures in a large enterprise.

Full-time

SMS everywhere

03/2012 - 04/2013 (dtms GmbH)

At dtms, developed SMS into true value-added services through intelligent backends.

Full-time

The base close by

10/2010 - 02/2012 (Computacenter)

As a freelancer, planned, built, and operated the Telefonica Germany Data Center.

Freelance

iPhone development begins

2009

Published a multi-touch game - early mover in the App ecosystem.

Self-employed

Software engineering turns agile

2008

Master's course on process models: from waterfall to agile - first insights into benchmarking, processes, and project leadership.

First contact with JSF

2008 (Synaxon AG)

Co-developed a portal for correcting product descriptions in university partnership.

Coffee?

2002

Discovered and fell in love with Java during college on the 2nd educational path.

Those were the days

1992

The origin: first BASIC programs on the C64 - where the passion for coding began.

Education

Cognitive Science/Informatics

University of Bielefeld, 2012

Skills
  • Application and Data
    • JavaScript / TypeScript
    • Python
    • Java
    • Scala
    • MySQL
    • MariaDB
    • PostgreSQL
    • MongoDB
    • ArangoDB
    • SQLite
    • Cassandra
    • Apache Spark
    • Hadoop
    • CSS
    • Node.js
    • React
    • Next.js
    • Astro
    • Material-UI
    • Vue.js
    • Android SDK
    • AWS Lambda
    • Amazon EC2
    • Amazon S3
    • Amazon CloudFront
    • Amazon RDS
    • Amazon SQS
    • Markdown
    • RabbitMQ
    • Apache Tomcat
    • Socket.IO
    • Objective-C
    • Memcached
    • Spring Boot
    • Struts
  • Utilities
    • Google Analytics
    • Google Tag Managager
    • Google Maps
    • Matomo
    • Ackee
    • Elasticsearch
    • Stripe
    • Amazon SES
    • Amazon API Gateway
    • Amazon SNS
    • Amazon Route 53
    • AWS IAM
    • Twilio
    • Mandrill
    • Swagger UI
    • Hugo
  • DevOps
    • Git
    • Docker
    • Docker Compose
    • Docker Swarm
    • Kubernetes
    • Jenkins
    • Selenium
    • CircleCI
    • Cypress
    • DroneCI
    • BrowserStack
    • Amazon EC2 Container
    • Amazon CloudWatch
    • AWS CloudFormation
    • SourceTree
  • Business Tools
    • Gmail
    • Slack
    • Google Fonts
    • Jira
    • Confluence
    • Mailchimp
    • Skype
    • Figma
    • Salesforce
  • Web Service Automation
    • Zapier
    • n8n
    • Slack Bot
    • Webhooks