Leonard 'Lenny' Daume

I'm

Craftsman by heart, CTO by role. I don't build features - I design impact. From remote scaling of 100+ devs without middle management to transforming output-focused teams into outcome-driven ones. My principles: Product thinking over feature factories. Flow metrics over velocity theatre. Servant leadership over command & control. Shared ownership over handovers.

Services

Progressive services that move tech and business forward - with product thinking, flow metrics, and servant leadership. Outcomes over output. Impact over velocity.

CTO (Fractional / Part-Time / Interim)

CTO by role, Craftsman by heart. Progressive leadership with clean engineering - remote scaling of 100+ devs without middle management. Servant leadership, clarity, and technical excellence.

Full-Stack Developer

We build what matters - outcomes over output, flow over process theatre. From idea to impact with clean engineering and product thinking. Craftsman with shared ownership and continuous delivery.

Product Owner

We build products that create impact - not feature lists. Understanding multi-level value chains and real business value. Product thinking: outcomes, behavior change, no handovers.

Workflow Automation

Automation that gives teams focus for what matters: creating value. Reduce toil, improve flow, free capacity for impact. Value-stream automation - not replacing people, enabling focus.

Latest Projects

HandsOn CTO - Livable Places | Leonard Daume

As Hands-on CTO at Livable Places, I've been building an AI-first platform since July 2025 that analyzes social environments and amenities - with focus on the "S" in ESG (Social Sustainability). Tech-Stack: Python/FastAPI, Nuxt 3/Vue 3, PostGIS/MapLibre, Terraform/Hetzner.

Livable Places GmbH (90% Remote / Hamburg)

since Jul 2025

Full-time

CTO - WPS MANAGEMENT GMBH // wescale | Leonard Daume

As CTO, I led 15 cross-functional Scrum teams (100+ developers) remotely with FaST Agile. Transformation to flow-based metrics, cloud-native architecture (GCP/Azure), and continuous delivery culture. Scaling product development without middle management.

WPS MANAGEMENT GMBH (100% Remote / Paderborn)

Sep 2023 - Jun 2025

Full-time

Web and Portal Development | Zenstrom | Leonard Daume

As Freelance Web Developer, I advised Zenstrom on developing a modern website and portal solution. Tech-Stack: Astro SSR/CSR, PWA, React/Svelte, AWS infrastructure. Technical advisory for scalable architecture and modern web technologies.

LGE Energy Berlin GmbH // Zenstrom (100% Remote / Berlin)

Jun 2023 - Dec 2023

Freelance

Fractional CTO - Technical Advisor for Smartjobr | Leonard Daume

As Fractional CTO at Smartjobr, I advised the company on technical strategy and scaling of the freelancer matching platform. Advisory for startup growth, technology selection, and team scaling after successful product-market fit.

QYRAGY GmbH (100% Remote / Hannover)

May 2023 - Nov 2023

Freelance