Leon MielkeContact me
Leon MielkeBuilding
since
Claude 3.0

Shapingthe
futureofAI-SWE

I bridge the gap between business and engineering. Using AI-driven development, I empower product teams to build faster.

AI-EngineerProject ManagerUX Designer
// My skills

What I provide

Leon Mielke

Leon Mielke, 27, Hamburg. Building products that really make a difference.

(01)

AI-ENGINEERING

Pushing the limits of prompt-based development. From vibe coding to spec-driven engineering, facelifting existing products and building new solutions from scratch

(02)

PROJECT MANAGEMENT

Shipping products across the full lifecycle. From initial release to flagship ownership to maintenance mode

(03)

UX DESIGN

The right solutions for the right problems. From user interviews to mockups to interactive prototypes

// 001 AI Engineering

I bridge the gap between business and engineering.

Using AI-driven development, I empower product teams to build faster without waiting for dev capacity.

softfair GmbHsoftfair GmbH

AI Specialist / Project Lead

2024 – today

Bringing AI-driven development into the product workflow. Enabling faster iteration, independent prototyping, and a new way of working between business and engineering.

Software engineering is undergoing a fundamental shift. Coding agents now have a comprehensive understanding of an entire codebase. They create implementation plans, flag edge cases, and catch mistakes before they ship. The developer becomes a director: setting direction, reviewing decisions, and guiding the AI through complex problems. Development speed increases by an order of magnitude.

But the bigger shift is happening outside of engineering. AI no longer just assists with creativity. It enables product managers and business analysts to work independently and iteratively. Ideas can be translated into working prototypes within hours and put in front of customers the same day. Mistakes become cheaper. Iteration becomes the default. The gap between idea and product has never been smaller.

I have been building at this intersection for two years. I actively shape this shift, not just follow it.

Tools
CursorCursor
ClaudeClaude
2+

Years AI-driven Development

10x

Faster Iteration

Hours

From Idea to Prototype

PM+Dev

One Role, Full Stack

// 002 Project Management

Three examples of things I've shipped.

softfair GmbHsoftfair GmbH

Product Owner / Project Lead

2021 – 2024

Owned the product backlog, led cross-functional teams, and drove numerous major projects from conception to delivery.

01Product Ownership

Comparison Tool Modernisation

Our comparison tools had aged. This project was about a full frontend overhaul driven by user feedback and market analysis. Relevant MVPs were defined, prioritised, and accompanied all the way through to delivery.

Frontend OverhaulUser ResearchMVP DefinitionRoadmap
02Product Management

B2B2C Insurance App

Launched a white-label B2B2C app for insurance brokers and their end customers. Core focus was onboarding new clients and setting up fully functional, branded instances for each of them.

White-labelClient OnboardingB2B2C
03Web / UX

Corporate Website Rebuild

Led the full rebuild of the company website. Responsible for conception, coordinating design and development teams, and handling legal requirements like GDPR and imprint.

WordPressProject LeadConceptionGDPR
5+

Projects Shipped

Fullstack

Tech Stack

Full Lifecycle

Ownership

// 003 UX Design

UX is not a phase —it's the foundation.

It doesn't matter how powerful your features are. If users can't find or understand them, they don't exist.

Ever wondered why an ATM always returns your card before dispensing cash? People come for the money, not the card. If cash came first, they'd walk away and forget it. Designers eliminated the problem before it could happen. Anticipating behavior, not reacting to it.

The same principle applies to every digital product. Understanding how people think, where they get stuck, and what they actually need — that's where good software starts.

Skills
CursorCursor
FigmaFigma
MiroMiro
LucidLucid
Adobe XDAdobe XD
Fresenius HochschuleFresenius Hochschule

B.Sc. Business Psychology

2017 – 2020

Studying how people think and behave gave me the analytical lens that every good UX practice is built on.

HanseMerkurHanseMerkur

Working Student Technical Support

2016 – 2019

Talking to users every day made it impossible to ignore where products fall short. That frustration turned into curiosity.

softfair GmbHsoftfair GmbH

UI/UX Designer

2020 – 2021

Where it all came together. Designing real flows, running usability tests, and shipping interfaces people actually use.

6+

Years of Experience

100+

Features Shipped

50k+

Users Reached

B2B & B2C

Product Domains