Maximilian Leistner-Web & Software Dev / Architect / Team-Lead
Check rate
Experience
Project Manager / Conversion Optimization Specialist
Sachkundegurus / AEVOGurus
- Analysis of customer onboarding, in-app, and landing page processes
- Optimization of conversion-related features
- Liaison between CTO, design, and development teams
- Project responsibility for new product processes and landing pages
Team Lead
quäntchen + glück GmbH & Co KG
Development of custom web applications and CMS-based systems (e.g., WordPress)
Performance optimization and refactoring of existing systems
Technical concept, architecture, and implementation of complex applications
Team leadership with responsibility for 5+ developers
Platforms and tools for public procurement and nationwide innovation programs
High demands for stability, transparency, and long-term maintainability
Development of interactive decision-making and evaluation systems
Founder / Senior Software Developer / Senior Full-Stack Web Developer
Freelance & fuxdev GmbH
- Founded and managed a software development company focused on custom software and SaaS products
- Technical concept, architecture, and implementation of complex software systems
- Development of multiple SaaS products (compliance, e-commerce, automation)
- Responsibility for technical strategy, code quality, and maintainability
- Long-term technical partner for SMEs, agencies, and product companies
- Deep expertise in PropTech, FinTech, and educational platforms
- Development of custom web applications and platforms
- Performance optimization and refactoring of legacy systems
- API design and integration of third-party systems
- Close collaboration with founders, product owners, and stakeholders
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Education, Banking and Finance, and Advertising.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Product Development, Information Technology, Marketing, and Project Management.
Summary
Experienced senior full-stack developer with over 15 years of professional experience in developing, scaling, and operating web applications and SaaS products. I specialize in translating complex technical and business requirements into robust, maintainable, and scalable software solutions.
My work combines hands-on software development with architectural responsibility and entrepreneurially driven decision-making.
German senior full-stack developer and founder with over 15 years of experience in developing, scaling, and operating web and SaaS applications. Strong focus on sustainable architecture, performance, and business-driven technical decisions.
I enjoy both building new developments from scratch and working in existing teams to stabilize legacy systems, modernize architectures, or deliberately scale platforms.
Through my experience in PropTech, governance, the public sector, education, and companies at various maturity levels, I effectively bridge technology, product, and business – ensuring that technical decisions support long-term strategic goals.
Skills
Software & Architecture
- Full-Stack Development (Frontend & Backend)
- Full-Stack Development (Php, Javascript, Typescript)
- Software Architecture & System Design
- Saas & Platform Development
- Performance Optimization
- Api Design & Integrations
- Shopify / Wordpress / Nuxt.Js / Next.Js
Frontend
- Vue.Js, Nuxt.Js, Next.Js, Javascript
- Html, Css, Tailwind Css
Backend
- Laravel, Php, Cms
- Relational Databases (Mysql, Postgresql)
- Node.Js
- Python
Business & Leadership
- Technical Leadership & Project Responsibility
- Technical Leadership & Decision-Making Responsibility
- Product Thinking & Cost Awareness
- Communication Between Business & Development
Languages
Education
Darmstadt University of Applied Sciences
Bsc. of Arts · Digital Media - Interactive Media Design
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Maximilian is based in Alzenau, Germany and can operate in on-site, hybrid, and remote work models.
Maximilian speaks the following languages: German (Native), English (Advanced).
Maximilian has at least 17 years of experience. During this time, Maximilian has worked in at least 3 different roles and for 3 different companies. The average length of individual experience is 6 years and 7 months. Note that Maximilian may not have shared all experience and actually has more experience.
Based on recent experience, Maximilian would be well-suited for roles such as: Project Manager / Conversion Optimization Specialist, Team Lead, Founder / Senior Software Developer / Senior Full-Stack Web Developer.
Maximilian's most recent position is Project Manager / Conversion Optimization Specialist at Sachkundegurus / AEVOGurus.
In recent years, Maximilian has worked for Sachkundegurus / AEVOGurus, quäntchen + glück GmbH & Co KG, and Freelance & fuxdev GmbH.
Maximilian is most experienced in industries like Information Technology, Education, and Banking and Finance. Maximilian also has some experience in Advertising.
Maximilian is most experienced in business areas like Product Development, Information Technology, and Marketing. Maximilian also has some experience in Project Management.
Maximilian has recently worked in industries like Information Technology, Education, and Banking and Finance.
Maximilian has recently worked in business areas like Product Development, Information Technology, and Marketing.
Maximilian holds a Bachelor in Digital Media - Interactive Media Design from Darmstadt University of Applied Sciences.
The availability of Maximilian needs to be confirmed.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 26 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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